Omega ST80, ST80L User guide

06EN003490 Rev. E ST80/ST80L Flow Meter

Notice of Proprietary Rights

This document contains confidential technical data, including trade secrets and proprietary information which is the property of Fluid Components
International LLC (FCI).Disclosure of this data to you is expressly conditioned upon your assent that its use is limited to use within your company
only (and does not include manufacture or processing uses). Any other use is strictly prohibited without the prior written consent of FCI.

© Copyright 2021 by Fluid Compone nts Inte rnational LLC. All right s re served. FCI i s a registered trade mark of F luid Components Internat ional LLC. Infor mation subject to change w ithout not ice.

Fluid Components International LLC

ST80/ST80L Flow Meter 06EN003490 Rev. E

Table of Contents

Table of Contents ......................................................................................................................................................................................iii

List of Figures ........................................................................................................................................................................................... v

List of Tables ............................................................................................................................................................................................vii

Typographical Conventions .................................................................................................................................................................... viii

1 GENERAL ......................................................................................................................................................................................... 1

Product Description ........................................................................................................................................................................... 1

Theory of Operation .......................................................................................................................................................................... 1

Safety Instructions ............................................................................................................................................................................. 1

Order Verification .............................................................................................................................................................................. 1

Technical Specifications .................................................................................................................................................................... 3

2 INSTALLATION ................................................................................................................................................................................. 7

Instrument Identification and Outline Dimensions ............................................................................................................................. 7

ST80 Insertion Sensor Installation .................................................................................................................................................... 7

ST80L In-Line Process Connection ................................................................................................................................................ 14

Installation of Probe with Moisture/Rain Shield ............................................................................................................................... 14

Flow Transmitter Electronics Installation ......................................................................................................................................... 16

Instrument Wiring ............................................................................................................................................................................ 20

Post Installation Check .................................................................................................................................................................... 29

3 OPERATION ................................................................................................................................................................................... 31

Basic Commissioning and Start-Up ................................................................................................................................................ 31

Configuring the ST80/ST80L ........................................................................................................................................................... 31

Verify Engineering Units .................................................................................................................................................................. 35

System Faults, Alarms and Logging Indication ............................................................................................................................... 35

ST80/ST80L Configuration Software Application (User Password: 2772) ...................................................................................... 36

Real Time Clock .............................................................................................................................................................................. 37

Totalizer Setup ................................................................................................................................................................................ 38

Configuring for AST™ or Constant Power Measurement Methods ................................................................................................ 39

Flow Filtering ................................................................................................................................................................................... 40

NAMUR Setup ................................................................................................................................................................................. 41

Internal Delta-R Resistor (idR) Check ............................................................................................................................................. 43

Using Digital Outputs ...................................................................................................................................................................... 46

HART Operation .............................................................................................................................................................................. 47

HART Command List Reference ..................................................................................................................................................... 52

Modbus Operation ........................................................................................................................................................................... 70

4 MAINTENANCE .............................................................................................................................................................................. 77

Introduction ..................................................................................................................................................................................... 77

General Maintenance ...................................................................................................................................................................... 77

Power Fuse Replacement ............................................................................................................................................................... 78

Lithium Battery Replacement .......................................................................................................................................................... 79

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06EN003490 Rev. E ST80/ST80L Flow Meter

5 TROUBLESHOOTING .................................................................................................................................................................... 81

Non-Maintenance Observations ...................................................................................................................................................... 81

General Function Check ................................................................................................................................................................. 82

Troubleshooting the Flow Element .................................................................................................................................................. 83

Verification of the Electronics .......................................................................................................................................................... 85

Constant Power Configuration Troubleshooting ............................................................................................................................. 87

Defective Parts ................................................................................................................................................................................ 89

Customer Service ............................................................................................................................................................................ 89

Reference: Error/Status Register Information ................................................................................................................................. 90

APPENDIX A DRAWINGS .................................................................................................................................................................. 93

APPENDIX B ADDITIONAL INFORMATION .................................................................................................................................... 125

Parameters Report from the ST80/ST80L Configuration Application (Sample) ............................................................................ 126

HMI Menu Outline ......................................................................................................................................................................... 131

ST80/ST80L Configuration Software Menu Outline (v3.2.0.x) ...................................................................................................... 132

Instructions: Installing Sun Shield on ST80/ST80L Integral Enclosure ......................................................................................... 133

Instructions: Installing Sun Shield on ST80/ST80L Remote Enclosure ........................................................................................ 134

APPENDIX C GLOSSARY ................................................................................................................................................................ 135

Abbreviations ................................................................................................................................................................................ 135

Definitions

APPENDIX D APPROVAL INFORMATION ...................................................................................................................................... 137

Specific Conditions of Use ............................................................................................................................................................ 137

Safety Instructions ......................................................................................................................................................................... 137

APPENDIX E CUSTOMER SERVI C E .............................................................................................................................................. 143

..................................................................................................................................................................................... 135

Customer Service/Technical Support .................................................................................................................................... 143

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ST80/ST80L Flow Meter 06EN003490 Rev. E

List of Figures

Figure 1 – Example Compression Fitting Process Connection ................................................................................................................. 7

Figure 2 – Compression Fitting Installation, Dimensions .......................................................................................................................... 8

Figure 3 – Example Flange Mount Installation .......................................................................................................................................... 9

Figure 4 – Example NPT Pipe Thread Mount Installation ......................................................................................................................... 9

Figure 5 – Retractable Packing Gland Installation .................................................................................................................................. 10

Figure 6 – Flow Element Installation Using FCI Retractor Tool 026854-01 ............................................................................................ 12

Figure 7 – Packing Gland Locking Collar ................................................................................................................................................ 12

Figure 8 – ST80L Process Connection ................................................................................................................................................... 14

Figure 9 – Installation of Sensor Probe with Moisture/Rain Shield ......................................................................................................... 15

Figure 10 – Integral Electronics Installation (Compression Fitting Shown) ............................................................................................. 16

Figure 11 – Remote Installation, Mounting Bracket on Wall ................................................................................................................... 17

Figure 12 – Remote Installation, Mounting Bracket on 1" – 1½" Pipe .................................................................................................... 18

Figure 13 – Remote Installation, Mounting Bracket on 2" Pipe ............................................................................................................... 18

Figure 14 – Remote Installation, Optional Stainless Steel Bracket on 2" Pipe ....................................................................................... 19

Figure 15 – Recommended Wiring Routing, Base Electronics Enclosure .............................................................................................. 20

Figure 16 – ST80/ST80L I/O Connector Locations ................................................................................................................................. 21

Figure 17 – ST80/ST80L Electronics Enclosure Label ........................................................................................................................... 22

Figure 18 – Bus Configuration 2 mm Jumper Headers and DIP Switch ................................................................................................. 22

Figure 19 – Input Power Wiring .............................................................................................................................................................. 23

Figure 20 – ST80/ST80L Ferrite Core Installation .................................................................................................................................. 23

Figure 21 – Flow Element Connections, TB1 ......................................................................................................................................... 24

Figure 22 – HART and Ch. 1 & Ch. 2 4-20 mA Connections, J25 .......................................................................................................... 25

Figure 23 – Single Connection and Multidrop HART Setups .................................................................................................................. 26

Figure 24 – Modbus/PROFIBUS/Fieldbus Connections, J8 ................................................................................................................... 27

Figure 25 – Modbus Wiring ..................................................................................................................................................................... 27

Figure 26 – Fieldbus/PROFIBUS Wiring ................................................................................................................................................. 28

Figure 27 – Hot Key on the Optional HMI Display .................................................................................................................................. 31

Figure 28 – HMI Display IR Sensor Functions ........................................................................................................................................ 32

Figure 29 – Basic Setup Options, HMI .................................................................................................................................................... 33

Figure 30 – Instrument Setup Options .................................................................................................................................................... 33

Figure 31 – Display Setup Options ......................................................................................................................................................... 34

Figure 32 – Configuration Software Tabs for Basic Setup Functions ..................................................................................................... 35

Figure 33 – Example Log, Al arm, and Loggi ng Icons on the Optional Di splay ............................................................................................... 36

Figure 34 – The Configurator Welcome Screen ..................................................................................................................................... 36

Figure 35 – Example Process Data Screen ............................................................................................................................................ 37

Figure 36 – Example Date and Time Set Screen ................................................................................................................................... 37

Figure 37 – Example Totalizer Display Showing Total Flow Value ......................................................................................................... 38

Figure 38 – Totalizer Setup Screen ........................................................................................................................................................ 38

Figure 39 – Example AST Power Mode Tab (Configuration) .................................................................................................................. 39

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06EN003490 Rev. E ST80/ST80L Flow Meter

Figure 40 – Flow Filtering Setup Screen ................................................................................................................................................. 40

Figure 41 – Chart: Flow Output Over Time with Various Flow Damping Values .................................................................................... 41

Figure 42 – NAMUR Fault ....................................................................................................................................................................... 41

Figure 43 – NAMUR Output Level Selection (4-20 mA User Tab) .......................................................................................................... 42

Figure 44 – Example idR Check Results Display ................................................................................................................................... 43

Figure 45 – Example Internal Delta R Scheduled Screen (After Clicking "Run test now...") .................................................................. 44

Figure 46 – Example Internal Delta R Test Logs Screen ........................................................................................................................ 44

Figure 47 – Internal Delta-R Resistor Check (idR) HMI Display Sequence ............................................................................................ 45

Figure 48 – Digital Bus Deactivation Warning When Enabling HART .................................................................................................... 46

Figure 49 – Field Communicator Easy Upgrade Utility, Import DD ......................................................................................................... 48

Figure 50 – ST80/ST80L Configuration Software Output Tab with Modbus Selected ............................................................................ 70

Figure 51 – ST80/ST80L Configuration Software Modbus Tab, Serial Interface Configuration ............................................................. 71

Figure 52 – Fuse Location, Power Supply Board ................................................................................................................................... 78

Figure 53 – Instrument Disassembly for Lithium Coin Cell Battery (CR2450N) Replacement ............................................................... 80

Figure 54 – Example Heater Values Tab (Diagnostics) .......................................................................................................................... 84

Figure 55 – System Status LED, Main Board ......................................................................................................................................... 85

Figure 56 – DMM Hookup to Measure 4-20 mA Output.......................................................................................................................... 87

Figure 57 – Connecting FES-200 to ST80/ST80L Transmitter ............................................................................................................... 88

Figure 58 – ST80/ST80L Decade Box Wiring ......................................................................................................................................... 88

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ST80/ST80L Flow Meter 06EN003490 Rev. E

List of Tables

Table 1 – Compression Fitting Material .................................................................................................................................................... 8

Table 2 – Interconnecting Cable Minimum Conductor Size .................................................................................................................... 20

Table 3 – Modbus Select Jumpers ......................................................................................................................................................... 28

Table 4 – Modbus Line Configuration Jumpers ...................................................................................................................................... 28

Table 5 – FOUNDATION Fieldbus/PROFIBUS Select Jumpers ................................................................................................................. 29

Table 6 – FOUNDATION Fieldbus/PROFIBUS Line Configuration Jumpers .............................................................................................. 29

Table 7 – Flow Parameters, HMI ............................................................................................................................................................ 34

Table 8 – Fatal Faults that Trigger NAMUR ............................................................................................................................................ 42

Table 9 – ST80/ST80L HART Process Variables ................................................................................................................................... 47

Table 10 – ST80/ST80L HART Field Device Registration Information ................................................................................................... 48

Table 11 – HART Universal Commands ................................................................................................................................................. 52

Table 12 – HART Common Practice Commands ................................................................................................................................... 59

Table 13 – ST80/ST80L HART Device Specific Command Groupings .................................................................................................. 61

Table 14 – HART Device Specific Commands ....................................................................................................................................... 61

Table 15 – Command Status Bytes, Bit Assignments ............................................................................................................................ 67

Table 16 – Command-Specific Response Codes ................................................................................................................................... 67

Table 17 – Command 48, Additional Device Status Bytes Bit Assignments ........................................................................................... 68

Table 18 – HART Engineering Units Codes ........................................................................................................................................... 69

Table 19 – ST80/ST80L Modbus Function Codes .................................................................................................................................. 71

Table 20 – ST80/ST80L Modbus Process Data ..................................................................................................................................... 72

Table 21 – Modbus Service Data -- Service and Setup Functions ......................................................................................................... 73

Table 22 – ST80/ST80L Modbus Engineering Unit Codes ..................................................................................................................... 75

Table 23 – ST80/ST80L Modbus Exception Codes ................................................................................................................................ 76

Table 24 – ST80/ST80L Modbus Variables and Registers Map ............................................................................................................. 76

Table 25 – Power Fuse Summary .......................................................................................................................................................... 78

Table 26 – Lithium Coin Cell Battery Summary ...................................................................................................................................... 79

Table 27 – Flow Element Resistance Measurements (In Ohms) Taken From Remote/Integral Electronics .......................................... 83

Table 28 – Flow Element Resistance (In Ohms) at the Local Enclosure ................................................................................................ 83

Table 29 – Nominal Heater Parameter Ranges ...................................................................................................................................... 84

Table 30 – System Status LED D3 States .............................................................................................................................................. 85

Table 31 – Instrument Power Supply Voltages ....................................................................................................................................... 86

Table 32 – Basic CORE Fault Register (CORE CY Command) ............................................................................................................. 90

Table 33 – Detailed CORE Fault Register (CORE 2V Command) ......................................................................................................... 91

Table 34 – FE Fault Register (FE DF Command) ................................................................................................................................... 92

Table 35 – ST80/ST80L Drawings in Appendix A ................................................................................................................................... 93

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06EN003490 Rev. E ST80/ST80L Flow Meter

Note:

A note is additional information that adds to or supplements the topic.

Caution:

A caution indicates an action that can cause equipment damage, loss of data or software, or minor injury.

Warning:

Typographical Conventions

Important notes or warnings are shown like the following:

A warning indicates an action that can cause equipment damage, or serious injury/death, or both.

Caution symbols that may be marked on the product or its packaging are explained below:

Risk of Danger symbol (observe all warnings and cautions in manual).

Hot Surface Caution symbol (risk of burn from probe heater).

ESD (Electrostatic Discharge) Susceptibility symbol (do not touch without
appropriate precautions).

Static-sensitive Devices symbol (use ESD handling procedures).

viii Fluid Components International LLC

ST80/ST80L Flow Meter GENERAL

Warning:

Explosion Hazard. Do not disconnect equipment when flammable or combustible atmosphere is present.

1 GENERAL

Product Description

The ST80/ST80L is a thermal dispersion, industrial process grade air/gas flow meter. It is suitable for all air and gas flow measurement applications
in line sizes from 1” to 100” [25 to 2500 mm] and larger. The instrument provides direct mass flow measuring and measures flow rate, totalized flow
and temperature.

The measurements are made available to the user by way of 4-20 mA analog output channels with HART or Modbus (standard) or other pre-selected
digital bus options. The optional graphics display provides real-time process variable values along with flow range and process description information.

There are no moving parts to clean or maintain. A wide selection of process connections are offered to fit with any process piping. Versions are
available for temperature service from -40 °F [-40 °C] to 850 °F [454 °C].

The ST80/ST80L electronics/transmitter can be integrally mounted with the flow sensor or remote mounted up to 1000’ [300m] from the sensor
element. The ST80/ST80L features the FCI exclusive AST™ (patent pending) adaptive sensing technology measuring technique that provides for
improved response time and accurate flow measurement. All ST80/ST80L instruments are precision calibrated in FCI’s world-class, NIST traceable
calibration facility on one of our flow stands matched to your gas application and actual installation conditions.

Theory of Operation

The instrument is functionally based on the thermal dispersion operating principal. With AST™, power to the active RTD sensor’s heater is varied to
maintain a constant Delta T with the reference (unheated) RTD sensor. The flow rate and the heater power needed to maintain Delta T is
proportional. Once the heater current reaches a set maximum, the heater current is maintained as the instrument reads the varying sensor
resistance (Delta R). This resistance is proportional to flow rate. The transition between reading the heater power (constant Delta T) and reading the
sensor resistance (constant power) is seamless and automatic and is the key to the AST™ feature. The differential signal, whether it’s from the
sensor heater power (constant Delta T) or the sensor resistance (constant power) is scaled to drive a 4-20 mA flow output. A second temperature
output, from the unheated reference sensor, drives a second 4-20 mA output.

Safety Instructions

● Field wiring shall be in accordance with NEC (ANSI-NFPA 70) or CEC (CSA C22.1) locations as applicable.

● The instrument must be installed, commissioned and maintained by qualified personnel trained in process automation and control

instrumentation. The installation personnel must ensure the instrument has been wired correctly according to the applicable wiring diagram.

● All location specific installation and wiring requirements must be met and maintained. FCI recommends an input power circuit breaker
be installed between the power source and the flow meter. This facilitates easy power disconnection during commissioning and
maintenance procedures. Use a switch or circuit breaker if the instrument is in a hazardous area.

● The flow meter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when handling the circuit
board assemblies.

● Hazardous Areas: The instrument is designed for use in hazardous areas. The approved area classification is identified on the
nameplate along with the temperature and pressure limitations. The USB port does not support the hazardous area requirements and
should only be used when the area is declassified. Remove any non-certified parts such as plastic protection caps from cable entry
ports and replace by suitable wiring and cabling system certified by notified bodies for use in hazardous areas.

● When mounting the flow element into the process pipe, it is important that a lubricant/sealant is applied to the mating threads. Use a
lubricant/sealant that is compatible with the process media. Tighten all connections firmly. To avoid leaks do not overtighten or cross­thread connections.

Order Verification

● Verify the received hardware matches the purchased hardware and application requirements. Verify the model/part number on the
instrument I.D. tag (e.g., ST80L – 43E8000…) matches the purchased model/part number.

● Review the Calibration requirements as specified on the Engineering Data Sheet in the documentation package. Verify the flow,
temperature and pressure limits meet the application requirements.

Fluid Components International LLC 1

GENERAL ST80/ST80L Flow Meter

Hardware - Model Descriptions

ST80 – Single point insertion element with flow and temperature process output
ST80L – In Line element with flow and temperature process output

Documentation and Accessories

06EN003490 ST80/ST80L Installation, Operation, & Maintenance Manual
06EN003491 ST80/ST80L Configuration Software Manual
Calibration Certification Documentation
PC Configuration Software and USB Cable

Supplemental Manuals, optional

06EN003492 ST80/ST80L F

OUNDATION™ Fieldbus Manual

06EN003493 ST80/ST80L PROFIBUS PA Manual
06EN003494 ST80/ST80L PROFIBUS DP Manual

Supplemental Software, optional

HART DD Files
F

OUNDATION Fieldbus

PROFIBUS DD File
PDM/DTMs

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ST80/ST80L Flow Meter GENERAL

FM, FMc:

XP Class I, Division 1, Groups B, C, D

DIP Class II/III, Division 1, Groups E, F, G

NI Class I, Division 2, Groups A, B, C, D

NI Class II, Division 2, Groups E, F, G

DIP Class III, Division 1, 2

T6 Ta = -40°C to 40°C,

T5 Ta = -40°C to 55°C,

T4 Ta = -40°C to 60°C

Type 4X, IP66/IP67

NEC 500

ATEX/UKEX:

FM18ATEX0064X / FM21UKEX0036X

II 2 G Ex db IIC T6...T1 Gb

IP66/67

IECEx:

IECEx FMG 18.0025X

Ex db IIC T6...T1 Gb Ta = -40°C to + 60°C

Ex tb IIIC T85°C...T450°C Db
Ta = -40°C to + 60°C; IP66/67

Other:

CE Marking

Probe complies with Canadian Electrical code
seal device.

Technical Specifications
Instrument

■ Measuring Capability

Flow rate, total flow and temperature

■ Basic Style

ST80: Insertion
ST80L: In-line (spool piece)

■ Flow Measurement Range

Insertion Style: 0.25 SFPS to 1000 SFPS [0,07 NMPS to 305 NMPS]
ST80L In-line: 0.0062 SCFM to 1850 SCFM

[0.01 NMCH to 3,140 NMCH]
– Air at standard conditions; 70 °F and 14.7 psia [21 °C and

1,01325 bar (a)]

■ Temperature Measurement Range

Up to 850 °F [454 °C] commensurate with element; see
Operating Temperature in Flow Element specification

■ Environmental Conditions

Maximum Relative Humidity: 93%
Maximum Elevation: 6561’ [2000m]

■ Media

All gases that are compatible with the flow element material

■ Accuracy

Flow:

Gas Specific Calibration: ±1.0% reading, ±0.5% full scale

Temperature:

±2 °F [±1,1 °C] (display only, flow rate must be greater than 5
SFPS [1,5 m/sec])

■ Response Time (Flow)

1 second to 63% of final value (one step change) typical with –FP
or –FPC type flow element operating in AST mode

■ Temperature Coefficient

With optional temperature compensation; valid from 10% to
100% of full scale calibration

Flow: Maximum ±0.015% of reading / °F up to 850 °F
[±0.03% of reading / °C up to 454 °C]

■ Repeatability

Flow: ± 0.5% reading
Temperature: ±1 °F [±0.6 °C] (flow rate must be greater than 5

SFPS [1,5 NMPS])

■ Agency Approvals

Ta = -40°C to + 60°C
II 2 D Ex tb IIIC T85°C...T450°C Db
Ta = -40°C to + 60°C

requirements of ANSI/ISA 12.27.01-2011 as a single

■ SIL/IEC 61508: SIL 1 Compliant, SFF 71.1% to 79.1%

■ Calibration: Performed on NIST and and ISO/IEC 17025

traceable flow stands and equipment

■ Other: Follows best practices and guidelines as set forth in
ISO 14511; complies with ISO 14164

■ Storage Temperature

-76 to 150 °F [-60 to 65 °C]

Flow Element

■ Material of Construction

All-welded 316L stainless steel; Hastelloy-C optional

■ Operating Pressure

ST80 Insertion Style

Metal ferrule: 1000 psig [69 bar (g)]
Teflon ferrule: 150 psig [10 bar (g)]) (200 °F [93 °C] max.)
Packing gland (low pressure): 50 psig [3.5 bar (g)])
Packing gland (medium pressure): 500 psig [34 bar (g)])
Fixed 1" NPT: 1000 psig [69 bar (g)]
Fixed flange: per flange rating

■ Turndown Ratio

Normally factory set and field adjustable from 2:1 to 100:1 within
calibrated flow range

■ Temperature Compensation

Standard: ±30 °F [±16 °C]
Optional: ±100 °F [±55 °C]

Fluid Components International LLC 3

GENERAL ST80/ST80L Flow Meter

Tubing

Sch 40 Pipe

Sch 80 Pipe

psig

bar(g)

psig

bar(g)

psig

bar(g)

F Style Sensor

1"

2400

165

2500

172

3000

207

1½"

1750

121

2500*

172*

2"

1500

103

2250*

155*

S Style Sensor

1"

2400

165

2500

172

2500

172

1½"

1750

121

2"

1500

103

2250*

155*

Process Connection

Transmitter

Temp. Service1

Lo: 350 °F [177 °C] 2

Med: 500 °F [260 °C]

Lo: 350 °F [177 °C]

Med: 500 °F [260 °C]

Remote

Hi: 850 °F [454 °C]

Lo: 350 °F [177 °C]

Med: 500 °F [260 °C]

Hi: 850 °F [454 °C]

Lo: 350 °F [177 °C]

Med: 500 °F [260 °C]

Remote

Hi: 850 °F [454 °C]

Lo: 350 °F [177 °C]

Med: 500 °F [260 °C]

Lo: 350 °F [177 °C]

Med: 500 °F [260 °C]

Remote

Hi: 850 °F [454 °C]

1" to 6" [25 mm t o 152 mm]

1" to 12" [25 mm to 305 mm]

1" to 21" [25 mm to 533 mm]

1" to 36" [25 mm to 914 mm]

1" to 60" [25 mm to 1524 mm]

AC:

10 W, 1 Flow Element

DC:

9.6 W, 1 Flow Element

ST80L In-line Style

2500* 172*

* 1½" and 2" Sch 80 available by special order only; contact FCI.

¾" pipe also available by special order.

■ Operating Temperature (Process)

ST80 Insertion Style (FPC, FP, and S sensor head types)

Compression Fitting Integral/Remote

Low Pressure Packing Gland

Med. Pressure Packing Gland Remote

Fixed NPT

Fixed Flange (1" or DN25) Integral/Remote

Fixed Flange (≥1½" or ≥DN40)

Notes: 1. Minimum temperature is -40 °F [-40 °C].

2. For Teflon ferrule max. temper ature is 200 °F (93 °C).

Integral/Remote

Integral/Remote

Integral/Remote

ST80L In-line Style ( F and S sensor head types)

-40 °F to 257 °F [-40 °C to 125 °C]

■ Model ST80, Process Connections and Insertion Lengths

Compression Fittings: Model ST80 only

¾" or 1" male NPT, stainless steel with adjustable Teflon
ferrule or metal ferrule; or flanged tapped and threaded for ¾"
fitting, ANSI or DIN flanges.

Compression fittings not available with 850 °F [454 °C]
temperature versions of ST80.

Retractable Packing Glands

Low pressure 50 psig [3,5 bar (g)] or medium pressure 500
psig [34 bar (g)] with graphite or Teflon packing material; 1¼"
male NPT or ANSI or DIN flange.

Teflon packing required when process media is ozone, chlorine
or bromine. Remote mount required when medium pressure
packing gland is required.

Fixed Fittings/All Welded

1" male NPT, ANSI or DIN flange

Insertion Length

Field adjustable lengths:

Fixed lengths from 2.6" to 60" [66 mm to 1524 mm]

■ Model ST80L, In-line Flow Body and Process Connections
Flow element is calibrated and supplied as a spool-piece; options

include low flow injection tubes and built-in Vortab flow
conditioners for optimum low flow rangeability and performance

Size: 1" diameter tubing; 1", 1½", or 2" Schedule 40 pipe;
1" Schedule 80 pipe

Length: 9 nominal diameters
Process Connections: female NPT, male NPT, ANSI or DIN

flanges, or butt weld prepared
Option: Flanges sized for flow tube

■ Remote Transmitter Configurations

Transmitter may be mounted remotely from flow element using
interconnecting cable (up to 1000 ft [300 m]). Remote configura­tion required with selection of medium pressure packing gland.

Flow Transmitter/Electronics

■ Operating Temperature

-40 °F to 140 °F [-40 ° C to 60 °C]

■ Input Power

AC: 100 VAC to 265 VAC, 50 Hz to 60 Hz
DC: 24 VDC (19.2 – 28.8 volts)

■ Power Consumption

■ Battery Backup (for RTC)

Industrial-spec 3V Lithium coin cell type CR2450N

■ Outputs

Analog

Standard: Two (2) 4-20 mA outputs*.
4-20 mA outputs are user assignable to flow rate and tempera-

ture; outputs are user programmable to full flow range or subsets
of full flow range.

* Outputs are isolated and have fault indication per NAMUR NE43
guidelines, user selectable for high (>21.0 mA) or low (<3.6 mA)

HART (comes standard with analog outputs), V7 compliant.

Digital

Standard: USB (service and configuration port only); Modbus
RS-485

Optional: F
PROFIBUS DP.

FF Physical Parameters

Maximum Network Input Voltage - Ui (in V) = 32
Maximum Network Input Current - li (in mA) = 13

OUNDATION Fieldbus H1, PROFIBUS PA, or

4 Fluid Components International LLC

ST80/ST80L Flow Meter GENERAL

■ Enclosures

Main Transmitter/Electronics:

NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.

Four (4) cable ports ½"-14 NPT or M20 x 1.5
Size:

5" W x 5.40" H x 7.75" L (127 mm x 137 mm x 197 mm)

Local Enclosure (Remote Configuration):

• Single cable port enclosure (available with packing gland/low and
med press; ≥1.5" fixed flange; fixed NPT process connections):

NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.

One (1) cable port 1"-11.5 NPT
Size: 4.68" W x 4.87" H x 5.4" L (119 mm x 124 mm x 137 mm)

• Dual cable port enclosure (available with compression fitting;
1" fixed flange process connections):

NEMA 4X, IP66/67 polyester powder coated aluminum or
optional 316L stainless steel.

Two (2) cable ports 1/2"-14 NPT or M20 x 1.5
Size: 3.27" W x 3.54" H x 3.9" L (83 mm x 90 mm x 99 mm)

■ Readout/Display (Option 1):

• Large backlit 2" x 2" [50 mm x 50 mm] LCD for display of digital
flow rate, analog bar graph of flow rate, total flow, and
temperature; user selectable engineering units, and alarm/fault
status indication.

• User programmable 17 alphanumeric character field
associated with each calibration group.

• Set-Up & Service mode displays text and service codes.

• Display is electronically rotatable in 90° increments to optimize

viewing angle.

Note: For units without the display option, the service port (USB)
lets a PC configure/manage the instrument via the ST80/ST80L
configurator utility.

Other Options

■ Vortab Flow Conditioners
Available for all line size applications; standard choice with Model

ST80L (in-line).

■ Sun Shield
Shades main transmitter, electronics, and display from direct

sunlight; 316L stainless steel.
FCI P/N 023241-01 Integral transmitter
FCI P/N 023237-01 Remote transmitter

■ Ball Valves/Cable Glands

■ Certification and Testing Documentation

CMTR, NACE, PMI, 0
hydrostatic or air pressure test, certificate of origin, certificate of
conformance, wake frequency strength, and more.

■ Field Service and Support
Start-up assistance, site commissioning and installation

validation, maintenance agreements, bus communications
integration and validation, and more.

cleaning, radiography, dye penetrant,

2

■ Readout/Display and Optical Touch Buttons (Option 2)

Includes the Readout/Display Option 1 items, plus adds four
keypad/buttons for the user interface.

• Four (4) optical touch buttons for user programming of
instrument set-up and service interrogation.

• User programming and setup via the front panel.

• Optical touch button activation through front window – no need

to open enclosure to access or activate.

• Set and adjust the meter or interrogate diagnostics in-situ,
even in HazEx installation.

Fluid Components International LLC 5

GENERAL ST80/ST80L Flow Meter

This Page Intentionally Left Blank

6 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Warnings:

2 INSTALLATION

● Consult the manufacturer if dimensional information on the flameproof joints is necessary.

● The ambient temperature range and applicable temperature class of the ST80/ST80L flow meter is based on the

maximum process temperature for a particular application. Refer to page 137 for details.

● The painted surface of an ST80/ST80L flow meter (aluminum housing only) can store electrostatic charge and become
a source of ignition in applications with a low relative humidity < 30% relative humidity where the painted surface is relatively
free of surface contamination such as dirt, dust, or oil. Clean painted surfaces using a damp cloth moistened with water only.

● Do not replace internal battery when an explosive gas atmosphere is present.

Instrument Identification and Outline Dimensions

APPENDIX A starting on page 93 provides outline dimensions and mounting bracket dimensions for all integral and remote mounted electronic

configurations. Verify all dimensions meet the application requirements before beginning the installation process.

ST80 Insertion Sensor Installation

The proper flow meter location in the process piping configuration is critical to the instrument’s ability to measure the process variables accurately.
FCI recommends 20 nominal pipe diameters upstream and 10 pipe diameters downstream of the instrument installation point for most applications.
These distances can be significantly reduced when the flow meter is combined with FCI’s flow conditioning technology (Vortab).

Insertion flow elements can be mounted into the process using several available customer selectable configurations; compression fitting mounted,
threaded or flanged packing gland mounted, and threaded or flanged fixed “U” length mounted process connections. The specific sensor process
connection is specified by the customer on the order information sheet (OIS).

Mount the flow element to the process piping per the application piping requirements. Orient the instrument so that the flow arrow etched on the
element matches the direction of the process flow with the reference flat parallel to flow within ±3° of rotation. Insert a flow element with variable
insertion length ½” inch past the centerline of the process pipe or tube with the flow direction arrow correctly aligned and leveled. After the flow ele­ment has been located correctly and tightened into place, verify that the process seal does not leak by slowly applying pressure until the maximum
operation pressure is applied. Check for leaks at the process connection boundary using standard leak detection methods.

Figure 1 below shows a properly mounted compression fitting process connection instrument.

Fluid Components International LLC 7

Figure 1 – Example Compression Fitting Process Connection

INSTALLATION ST80/ST80L Flow Meter

Ferrule Material

Torque

Teflon

6 ft-lbs

316 SST1

65 ft-lbs

1

Note:

The metal ferrule configuration can only be tightened one time. Once tightened, the insertion length is no longer adjustable.

Compression Fitting

FCI single point insertion flow meters are calibrated at the centerline of the process pipe. The flow element is properly mounted when the
tip of the flow element is located 0.50 inches (13 mm) past the pipe centerline. See Figure 2 below. The scale etched on the side of the
insertion pipe indicates the length to the tip of the flow element. Follow the steps below to install the compression fitting flow element.

1. Calculate the insertion depth using the equation below.

I = Insertion depth

I.D. = Pipe inside diameter
T = Pipe wall thickness
C = Pipe mounting coupling and compression fitting (installed length)

..

 = 0.50" +
I = __________

+  + 



2. Mark the insertion pipe at the calculated insertion depth.

Figure 2 – Compression Fitting Installation, Dimensions

3. Apply proper thread sealant to the tapered pipe thread on the compression fitting and secure into pipe mounting coupling.

4. Insert the flow element to the insertion depth mark making sure the orientation flat is aligned parallel to the flow direction. Hand tighten
the compression nut. Compression fitting manufacturer recommends 1¼ turns past hand tight.

5. Tighten the compression nut to the torque specified for the corresponding ferrule material. See Table 1 below.

Table 1 – Compression Fitting Material

8 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

C00991-2-1

REMOTE ENCLOSURE

EXPLOSION PROOF

AGENCY APPROVED

FLANGE,
SIZE AND RATING
CUSTOMER SPECI FIED

FLAT TO SHOW

FLOW ORIENTATION

PIPE

PIPE

C00992-2-1

1" or 1¼" NPT

FLAT TO SHOW
FLOW ORIENTATION

0.50"
[12.6 mm]

Flange Mount

The flange mount flow element is shown in Figure 3 below. Attach the process mating flange with care. Correctly orient the flow element's
reference flat to ensure the instrument's calibrated accuracy.

● Verify the process media flow matches the flow direction arrow on the flow element.

● Apply appropriate gasket and or sealant to flange mount as required.

● Mate flow element flange to process flange keeping flat oriented properly.

● Secure flanges with appropriate mounting hardware.

Figure 3 – Example Flange Mount Installation

NPT Pipe Thread Mount

The pipe thread configuration is shown in Figure 4 below. Apply sealant compatible with the process media to male threads. Carefully insert into
process mounting coupling. Tighten the flow element until snug and continue until flat and flow direction arrow are aligned with process flow.

Figure 4 – Example NPT Pipe Thread Mount Installation

Fluid Components International LLC 9

INSTALLATION ST80/ST80L Flow Meter

Retractable Packing Gland Mounting

A retractable low and medium pressure packing gland, with 1¼" MNPT threads or ANSI/DIN flange, and graphite or Teflon packing, is a
process connection option. FCI single point flow meters are calibrated at the centerline of the process pipe. The flow element is properly
mounted when the tip of the flow element is located .50 inches (13 mm) past the pipe centerline. Follow the below steps to install/retract
instruments with the retractable packing gland option (as applicable to your configuration, also follow the pipe thread or flange mount
procedures as described in previous sections).

Insertion/Installation Procedure

1. The scale etched on the side of the insertion probe indicates the length to the tip of the flow element. Calculate the insertion depth
using the equation, variables, and Figure 5 below.

ID

= Inside Diameter of Pipe

T

= Pipe Wall Thickness

C

= Mounting Coupling with Optional Ball Valve and Installed Packing Gland Length

INSERTION DEPTH = ______________

Figure 5 – Retractable Packing Gland Installation

10 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Caution:

For applications where the process media is pressurized to greater than 50 psig (3.5 barg), a medium pressure

Warning:

Take note of your environment if using an electric drill to operate the retractor. Do not use an electric drill in an

Note:

After inserting the probe, you have the option to leave the retractor tool in place to ease future probe removal. If the retractor

2. Mark the insertion pipe at the calculated insertion depth.

3. Ball Valve Applications Only: If a ball valve is required, install the ball valve to the process mounting coupling. Close the ball valve
to prevent the process media from leaking out when installing the packing gland with the process line pressurized.

4. Apply the proper thread sealant compatible with the process media to the male threads of the packing gland. Fully retract the insertion
probe into the cavity of the packing gland and install the packing gland into the process mounting coupling or ball valve as described
in the previous sections: Flange Mount and NPT Pipe Thread Mount. If a ball valve is not used, make sure to first depressurize
the process line before installing.

5. Tighten the packing nut until the internal packing is tight enough to prevent excess process leakage, but also allow the insertion probe
to be inserted into place. For ball valve applications, open the ball valve after the packing nut has been tightened.

packing gland assembly with support rods or FCI retractor tool, part no. 026854-01, must be used to safely insert the
probe into the process. The FCI packing gland and retractor tool are rated to a maximum pressure of 500 psig (35
barg). For instructions on how to install the flow meter using the FCI retractor tool, see step 7.

6. Manual Flow Element Insertion: Insertion by Hand (Pressure: 50 psig [3.5 barg] max.) or Using Med. Pressure Packing Gland
Assembly with Support Rods (Pressure: 500 psig [35 barg] max.)

a. Align the orientation flat and flow arrow parallel to the flow direction and proceed to insert the flow element into the process

media pipe up to the insertion depth mark. For medium pressure packing gland, use the adjusting nuts on the threaded rods to
pull the flow element up to the insertion depth mark, and then tighten the adjustable nuts against the adjustable support beam to
lock the insertion probe into place. Make sure to move the adjustable nuts at the same time (equally) to prevent the probe from

bending and damaging the packing gland.
b. Tighten the packing nut another ½- to 1-turn tight (approximately 65-85 ft-lbs [88-115 N-m]) until the packing has created a full seal.
c. Ensure the locking collar is properly secured to the back of the packing gland. Torque the two ¼"-28 socket head cap screws on

the locking collar to 94 in-lbs [11 N-m} using a 3/16" hex key.

7. Flow Element Insertion Using FCI Retractor Tool 026854-01 (Pressure: 500 psig (35 barg) max.)
a. Place the flow element into the top and bottom brackets of the FCI retractor tool as shown in Figure 6.
b. Align the orientation flat and flow arrow parallel to the flow direction. Position the top bracket close to the orientation flat as

shown in Figure 6.

c. Secure the top and bottom bracket clamps to the flow element using the eight no. 8-32 screws provided as shown in Figure 6.

Torque these screws to 20 in-lbs [2 N-m] minimum.

d. The retractor tool has, on both ends, a 3/8" drive socket that engages the retractor to move the flow element in or out. Once the

flow element has been properly secured, open the ball valve and insert the flow element by using either a hand wrench or a drill
to rotate either drive socket in the appropriate direction for insertion as shown in Figure 6. Observe the Warning below if using
an electric drill. Insert the flow element up to the insertion depth mark and tighten the packing nut another ½ to 1 turn tight
(approximately 65 to 85 ft-lbs [88-115 N-m]) until the packing has created a full seal.

explosive environment as the drill could create a spark and cause an explosion.

e. Ensure the locking collar is properly secured to the back of the packing gland. Torque the two ¼"-28 socket head cap screws on

the locking collar to 94 in-lbs [11 N-m} using a 3/16" Allen wrench (hex key).

tool is removed, make sure to reinstall it before retracting the probe at pressures > 50 psi g. Since the packing gland itself
has a 500 psig rating, the probe remains securely in place with the retr ac tor off .

Fluid Components International LLC 11

INSTALLATION ST80/ST80L Flow Meter

Caution:

Figure 6 – Flow Element Installation Using FCI Retractor Tool 026854-01

Retraction/Removal Procedure

For applications where the process media is pressurized to greater than 50 psig (3.5 barg), FCI retractor tool, part no.
026854-01, must be used to safely retract the probe from the process (does not apply to applications using the
medium pressure packing gland assembly with support rods). For applications where the process media is
pressurized to equal to or less than 50 psig (3.5 barg), the flow element can be safely guided by hand. When using
hands to restrain the retraction, be prepared for a rapid pressure impulse of the flow element. Check first that there
are no objects directly behind the flow element as the insertion probe may retract very quickly.

1. Manual Flow Element Retraction: Retraction by Hand (Pressure: 50 psig [3.5 barg] max.) or Using Med. Pressure Packing
Gland Assembly with Support Rods (Pressure: 500 psig [35 barg] max.)

a. Loosen the socket head cap screw on the side of the locking collar. See Figure 7 below.

Figure 7 – Packing Gland Locking Collar

b. Low Pressure (max. 50 psig [3.5 bar(g)]): Slowly loosen the packing nut until the insertion probe begins to retract. Use hands as

needed to help control the retraction. If the probe does not begin to retract itself, gently shake and pull the insertion probe until
the flow element has been fully retracted into the packing gland.

12 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Warning:

Take note of your environment if using an electric drill to operate the retractor. Do not use an electric drill in an

Medium Pressure (max. 500 psig [35 bar(g)]): Loosen the two nuts at the top of the adjustable support rods so that they lie

slightly above the top support beam. Slowly loosen the packing nut until the insertion probe begins to retract. The insertion probe
will come to rest when the support beam at the top of the probe makes contact with the two top adjustable nuts. Continue to
slowly loosen the two top nuts until the insertion probe has fully retracted into the body of the packing gland. If the insertion probe
does not retract when moving the two top nuts, continue loosening the packing nut until retraction resumes. Make sure to move
the two top adjustable nuts at the same time (equally) to prevent the probe from bending and damaging the packing gland. To
lock the probe in a retracted state, tighten the top and bottom adjustable nuts against the top support beam.

c. For ball valve applications: Close the ball valve immediately after retraction to seal off the process. After closing the ball valve it

is then safe to remove the flow element from the back end of the ball valve. If a ball valve is not being used, make sure to

first depressurize the process line before removing the flow element.

2. Flow Element Retraction Using FCI Retractor Tool 026854-01 (Pressure: 500 psig (35 barg) max.)
a. Install the FCI retractor tool to the flow element as described in Insertion/Installation Procedure, page 10, steps ‘a,’ ‘b,’ and ‘c.’
b. Loosen the socket head cap screw on the side of the locking collar. See Figure 7 above.
c. Slowly loosen the packing nut until the load shifts to the top bracket of the retractor tool (approximately 1-1.5 turns).
d. The retractor tool has, on both ends, a 3/8" drive socket that engages the retractor to move the flow element in or out. Use a

hand wrench or a drill to rotate either drive socket in the appropriate direction for retraction as shown in Figure 6. Observe the
Warning below if using an electric drill. Retract the flow element until the sensor head has been fully retracted into the cavity of
the packing gland.

explosive environment as the drill could create a spark and cause an explosion.

e. Immediately after retraction, close the ball valve to seal off the process.
f. After the ball valve has been closed, it is safe to remove the flow element from the back end of the ball valve.

Fluid Components International LLC 13

INSTALLATION ST80/ST80L Flow Meter

C00993-2-1

LINE SIZE "A" LENGTH

1" 9"

1½" 13.5"

2" 18"

FLOW DIRECTION

OPTIONAL

CUSTOMER

PROCESS

CONNECTIONS

BUTT WELD FEMALE NPT MALE NPT

OPTIONAL VORTAB

2x FLANGED
PROCESS CONNECTION

7x DIA.

2x DIA.

ST80L In-Line Process Connection

The in-line ST80L flow element assembly can be threaded, flanged or butt weld mounted to the process piping. The specific type in-line process
connection is customer-specified on the order information sheet (OIS). See Figure 8 below.

Mount the sensor to the process piping per the application piping requirements. Verify the flow direction arrow is pointed in the correct direction. After
the sensor head has been located correctly and tightened into place, verify the process seal does not leak by slowly applying pressure until the
normal operation pressure is applied. Check for leaks at the process connection boundary.

Figure 8 – ST80L Process Connection

Installation of Probe with Moisture/Rain Shield

14 Fluid Components International LLC

For sensor probes equipped with a moisture or rain shield, position the probe/shield assembly within the pipe as shown in Figure 9. The
drawing shows the orientation of the moisture/rain shield relative to the flow direction, the correct position of the probe/shield assembly
relative to the pipe centerline, and the minimum pipe size. The moisture shield prevents build-up of moisture in the sensor head for wet gas
applications. The rain shield shields the sensor from rain falling into an open vertical pipe/stack in upward vertical flow applications.

ST80/ST80L Flow Meter INSTALLATION

Figure 9 – Installation of Sensor Probe with Moisture/Rain Shield

Fluid Components International LLC 15

INSTALLATION ST80/ST80L Flow Meter

Caution:

FCI flow meters contain static-sensitive devices. To avoid damage to the instrument observe the ESD precautions

C00988-2-2

Flow Transmitter Electronics Installation

The instrument electronic transmitter can be an integral part of the flow element or it can be mounted remotely using a shielded cable between the
flow element and the electronics.

Use power wiring with a minimum 90 °C rating.

ESD Precautions

listed below before opening the instrument for wiring.

● Use a wrist band or heel strap with a 1 MΩ resistor connected to ground.

● Use a static conductive mat on the work table/floor with a 1 MΩ resistor connected to ground when working on the instrument in a shop setting.

● Connect the instrument to ground.

● Apply antistatic agents such as Static Free made by Chemtronics to hand tools used on the instrument.

● Keep high static-producing items away from the instrument.

The above precautions are minimum requirements. The complete use of ESD precautions can be found in the U.S. Department of Defense
Handbook 263.

Integral Electronics

The integral electronics package is mounted during the flow element installation process. The integral electronics can be rotated ±180
degrees on the top of the flow element insertion pipe. This is done by loosening the lock nut at the base of the enclosure and rotating the
enclosure to the preferred orientation. Do not rotate the electronics enclosure more than ±180 degrees. Damage to internal wiring
may result from over-rotating the enclosure.

Lock Nut Torque Specification: 30-35 ft-lbs (40-47 N-m)

Provide integral electronics with additional support/bracing in applications where excessive vibration is present. A mounting bracket is
available from FCI to support the electronics when additional support is required. See Figure 10 below.

Figure 10 – Integral Electronics Installation (Compression Fitting Shown)

16 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Remote Electronics

A mounting bracket is supplied when the transmitter is ordered for remote mounting. The bracket mounting details are shown in Figure 11
below. Refer to the outline installation drawings in Appendix A for additional mounting details. The electronics can be easily mounted on a
wall or pipe. The mount bracket is designed for .25 inch or M6 mounting hardware. Securely mount the electronics to cement or structural
support columns or beams. Mounting to plaster is not recommended and does not meet system approval requirements.

Figure 11 – Remote Installation, Mounting Bracket on Wall

Fluid Components International LLC 17

INSTALLATION ST80/ST80L Flow Meter

2" Pipe

2x 3/16"-16

U BOLTS, SST

2x M4 SCREWS

(FCI PROVIDED)

ALUMINUM BRACKET

(FCI PROVIDED)

4x 3/16" HEX NUT

ST100A SERIES
TRANSMITTER

Remote Pipe Mounting

Refer to the figures below for remote transmitter pipe mounting details.

Figure 12 – Remote Installation, Mounting Bracket on 1" – 1½" Pipe

Figure 13 – Remote Installation, Mounting Bracket on 2" Pipe

18 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

C01247-2-1

2x M4 SCREWS

(FCI PROVIDED)

2x ¼"-20

U BOLTS, SST

4x ¼" HEX NUT

2" PIPE

ST100A SERIES
TRANSMITTER

(4.25)

(9.25)

Figure 14 – Remote Installation, Optional Stainless Steel Bracket on 2" Pipe

Fluid Components International LLC 19

INSTALLATION ST80/ST80L Flow Meter

Maximum Distance for AWG [mm2]

10 ft. (3 m)

50 ft. (15 m)

100 ft. (30 m)

250 ft. (76 m)

500 ft. (152 m)

1000 ft. (305 m)

Power AC or DC

22 [0.3255]

22 [0.3255]

22 [0.3255]

20 [0.5176]

18 [0.8230]

16 [1.3087]

Flow Element

(8-Cond. Shielded)

STP Flow Element

(10-Cond. Shielded)

16-30

16-30

16-30

16-30

16-30

16-30

Modbus

RS485 (14-30 AWG) [2.0809-0.0509]

F

Fieldbus

FF-844 H1 (14-30 AWG) [2.0809-0.0509]

PROFIBUS

RS485 (14-30 AWG) [2.0809-0.0509]

C01430-1-1

POWER CABLE/WIRING

SENSOR CABLE( S)
(REMOTE)

CUSTOMER I/O

CABLES/WIRING

Instrument Wiring

The flow transmitter can be powered by 85 – 265 VAC or 24 VDC as specified in the instrument

specification.

The electronics cannot be configured to

switch between AC and DC power. F or 220/265 VAC installations, a neutral reference circuit must be used.
All cable glands and conduit fittings must meet or exceed the area approval rating where the instrument is being installed. The base electronics

enclosure has two wiring ports (1/2"-14 NPT or M20 x 1.5) on both sides of the enclosure body (local enclosure options excluded). The
recommended instrument wiring routing is shown in Figure 15 below.

Figure 15 – Recommended Wiring Routing, Base Electronics Enclosure

Table 2 below shows the smallest copper wire (maximum AWG number) that can be used for the listed cabling. Contact FCI concerning greater

distances than those listed in the chart. Refer to APPENDIX A, page 93 for additional wiring/cabling information.

Table 2 – Interconnecting Cable Minimum Conductor Size

Connection

24 [0.2047] 24 [0.2047] 24 [0.2047] 22 [0.3255] 22 [0.3255] 18 [0.8230]

22 [0.3255] 22 [0.3255] 22 [0.3255] 22 [0.3255] 22 [0.3255] 18 [0.8230]

Analog Out (HART)

OUNDATION

Notes: 1. Requires a shielded cable. The shield is connected to the GND in the transmitter enclosure. The other end of

the shield is left floating (no connection to the flow element enclosure).

2. Transmission speed determines maximum cable length and vice versa: 9.6 kbps = 3940 ft/1200 m, 19.2 kbps = 3940 ft/
1200 m, 45.45 kbps = 3940 f t/120 0 m, 93.75 kbps = 3940 ft/1200 m, 187.5 kbps = 3280 ft/1000 m, 500 kbps = 1310 ft/
400 m, 1500 kbps = 656 ft/200 m, 3000 kbps = 328 ft/100 m , 6000 kbps = 328 ft/100 m, 12000 kbps = 328 ft/100 m.

[1.3087-0.0509]

[1.3087-0.0509]

[1.3087-0.0509]

[1.3087-0.0509]

[1.3087-0.0509]

[1.3087-0.0509]

20 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Warning:

Turn instrument power OFF before wiring the instrument.

Caution:

Use caution inserting wires into electronics housing. The metal ends can damage circuit boards.

Caution:

C01429-1-1

BLIND LID

LOCKING SET SCREW

WINDOW LID
LOCKING SET SCREW

INPUT
POWER, P1

FUSE

(Underneath)

SENSOR 1 CONNECTOR,

TB1

POWER SUPPLY COVER

USB TYPE B (PC CO NFIG),

J21

POWER SUPPLY
BOARD

OPT. FIELDBUS/
ADD-ON CARD

HART/4-20 mA CH. 1 OUT/

J25

Modbus/PROFIBUS/Fieldbus,

J8

MAIN BOARD

SYSTEM STATUS LED,

D3

Accessing the I/O Connectors

Remote Units: Avoid pulling, or inadvertently tugging, the remote cable when wiring the instrument. The sensor

connector/circuit board can be easily damaged by excess pulling of the remote cable.

Observe ESD precautions when wiring the instrument. Refer to ESD Precautions, page 16.

To access the instrument’s connection terminals first use a .050″ hex key to loosen the set screw locking the enclosure body blind lid. Then
unscrew the blind lid from the enclosure. Carefully pull the power and signal wires through the port to avoid damaging the electronics.

Figure 16 below shows the location of the ST80/ST80L I/O connectors as well as the lid set screw access holes in the enclosure body.

Connect wiring as described in the following paragraphs. Reinstall the blind lid when done making the connections: Tighten the lid one full
turn past the point where the O-ring makes contact with the lid, and then tighten the lid set screw to lock the lid (set screw must not
protrude from its threaded hole after tightening).

4-20 mA CH. 2 OUT,

Figure 16 – ST80/ST80L I/O Connector Locations

Fluid Components International LLC 21

PROFIBUS

INSTALLATION ST80/ST80L Flow Meter

C01419-1-1

J9

J12

J13

J10

J11

T1

J8

J25

J21

TB1

J11

J10

J9

J12

J13

J12

J13

MAIN BOARD

MODBUS FF/PROFIBUS

LINE PULLDOWN

LINE PULLUP

#SIM_ENABLE

#NV_ERASE

#HW_LOCK

ATION

POWER SUPP LY BOARD

(Under Main Board)

1

2

3

1

2

3

1

2

3

ON POSITION

ACTIVE WHEN ON

LINE CONFIG. BUS SELECT, J8 FF/PROFIBUSADD-ON CARD

DIAG/TEST

1

2

3

DC Version

Power Labeling

Electronics Enclosure Label

Affixed to the inside of the blind lid is a label that identifies the ST80/ST80L’s jacks and connectors (with terminal assignment). See Figure

17 below. Use this label as a guide when wiring the instrument. Note that the PCB silkscreen also provides connector identification.

Figure 17 – ST80/ST80L Electronics Enclosure Label

Configuration Jumpers/DIP Switch

When wiring the instrument for Modbus/Fieldbus/PROFIBUS make sure that the instrument is properly configured as shown in Figure 18
below. Refer to Modbus Connections on page 27 and Foundation Fieldbus/PROFIBUS Connections (Option) on page 28 for details.

Figure 18 – Bus Configuration 2 mm Jumper Headers and DIP Switch

22 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Warning:

Install an AC line disconnect switch with fuse or breaker between the power source and the flow meter.

C01412-1-1

J9

J12

J13

J10

J11

T1

J8

J25

J21

TB1

1 2 3

Term. 1
Term. 2
Term. 3

Line

AC DC

DC+

Neutral DC–

E. Gnd E. Gnd

C01446-1-2

ACTerm #

DC

DC+

Line1
Neutral2
E. Gnd

3 E. Gnd

FERRITE CORE

1. Strip ends of power leads.

POWER

FERRITE CORE

terminal bloc k)

POWER CABLE/

POWER WIRING

MAIN BOARD

POWER

POWER SUPPLY

GROUND WIRE

AC Power = 85 VAC min. to 265 VAC max.

Input Power

Always disconnect power before performing maintenance on wiring.

Connect input power to the 3-position Phoenix connector P1 on the power supply board as shown in Figure 19 below. The power
connector accepts 24–12 AWG (0.2 mm2 – 1.5 mm2) wire (refer to Table 2, page 20 for wire size vs. length info). It is recommended that
wiring have a flammability rating of UL 2556 VW-1 or equivalent.

(WITH RING LUG)

CONNECTOR, P1

BOARD

(Under Main Board)

DC Power = 19. 2 VDC min. to 28.8 VDC max.

Figure 19 – Input Power Wiring

Before connecting the power wires to connector P1, install the ferrite core clamp onto the power wiring as shown in Figure 20 below. Then
insert the stripped power wire ends into the appropriate P1 connector terminals. The ferrite core clamp (supplied with the instrument as
ferrite kit FCI p/n 023638-02) protects the instrument against the adverse effects of EMI/RFI electrical noise.

(AC Shown)

(3 power leads,
straight through)

2. Thread power leads t hr ough ferrite core (or snap open and
place wires in channel, and then snap core closed).

3. Insert power wires in appropriate P1 connector term inals.
See table/figure at right.

CONNECTOR, P1

4. Position ferrite core as close as possible to P1 connect or .

Figure 20 – ST80/ST80L Ferrite Core Installation

Fluid Components International LLC 23

WIRING

(Place close t o

INSTALLATION ST80/ST80L Flow Meter

Note:

The flow element in all integral units is pre-wired at the factory. The information in this section applies to remote

C01431-1-1

1. HTR EXC #1

2. HTR RTN

3. ACT EXC

4. ACT SEN

5. GND SEN

6. GND

7. REF EXC

8. REF SEN

9. SHIELD

TB1, MAIN BOARD

DETACHABLE
PLUG

HEADER
SOCKET

Power overload protection is provided by a clip-mounted SMT fuse. Refer to Power Fuse Replacement, page 78 (MAINTENANCE section)
for fuse replacement details.

Flow Element Connections

configuration units only.

See the appropriate wiring diagram in APPENDIX A for interconnect wiring between the flow element and remote electronics. Use an 8­conductor shielded cable for the external flow element input. The flow meter will not operate properly without these connections. To avoid
inaccurate flow meter readings make sure the ACT and REF wires are not reversed.

Referencing Figure 16 connect the ST80/ST80L flow element sensor wires to the detachable 9-position connector plug TB1 on the main

2

board. See Figure 21 below. The connector plug accepts 28-16 AWG (0.14 mm

- 1.5 mm2) wire (refer to Table 2, page 20 for wire size vs.
length info). Connect the flow element cable shield to the connector plug’s GND terminal (terminal #9). Leave the other end of the shield
floating (no connection to the flow element enclosure).Connect the flow element sensor to the plug as follows:

1. Remove connector plug from board (pull straight out).

2. Route sensor wires through remote enclosure’s wiring port/cable gland. Refer to Figure 15, page 20.

3. Strip wire ends (0.27 in [7 mm]) and insert into appropriate plug terminals as shown in Figure 21 below. Make sure to tighten each

terminal screw securely (max. torque: 2.2 inch-lbs [0.25 N-m]).

4. After all terminations are made plug connector block back into its header socket on the board.

Figure 21 – Flow Element Connections, TB1

24 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

Note:

The HART communications digital signals are superimposed on top of the channel #1 current loop (4-20 mA) output.

C01459-1-1

6.

5.

4.

3.

2.

1.

Return (RTN)

Ext HART– (RTN)

Ch. 2 4-20 mA Return

Ch. 2 4-20 mA

Ch. 1 4-20 mA Return,
Int HART– (RTN),
Ext HART+

Ch. 1 4-20 mA,
Int HART+

J25, MAIN BOARD

DETACHABLE
PLUG

HEADER
SOCKET

HART Connections

Referencing Figure 16 connect the installation HART wiring to the J25 Phoenix connector. Similar to flow element connector TB1 the J25
connector is a detachable plug that plugs into the header socket on the board. Use the appropriate J25 connector terminals depending on

2

your application as shown in Figure 22 below. The connector plug accepts 28-16 AWG (0.14 mm

- 1.5 mm2) wire.

Figure 22 – HART and Ch. 1 & Ch. 2 4-20 mA Connections, J25

● Single Connection – The instrument supplies power to the loop and controls the current as well. For this application connect HART+

to J25-1 (INT HART+) and HART- to J25-2 (CH1/INT HART RTN). This is the default 4-20 mA Ch. 1 output even if HART is not used.

● Network (Multidrop) Connection – The instrument receives loop power from the network, and controls the current. For this

application connect external HART+ to J25-2 (EXT HART+) and external HART- to J25-4 (EXT HART RTN).

The block di ag ram in Figure 23 below shows the single connection and multidrop HART setups. Use a 250 Ω 1%, ≥ 0.3 W resistor as shown in the
diagram below only if the external HART interface/wiring does not have this resistance built-in (HART requires a minimum loop resistance of 230 Ω).

ABLING RECOMMENDATION

C
Use a shielded, twisted-pair instrument grade wire (min. 24 AWG for runs less than 5000 ft/1500 m; min. 20 AWG for longer distances). The RC

value of the wire (Total Resistance x Total Capacitance) must be less than 65 µs (not a concern for point-to-point topology with a run less than
328 ft/100 m). A cable designed for HAR T/R S-485 such as Belden 3105A is recommended for com plex set ups or particularly long runs or both.

When HART communications is in use, the HART current loop channel #1 MUST be configured as FLOW to comply
with the HART protocol. The channel #1 current loop output is configured as FLOW by default at the factory.

Fluid Components International LLC 25

INSTALLATION ST80/ST80L Flow Meter

C01433-1-1

ST80/ST80L

HART

ST80/ST80L

J25-1

J25-2

HART

Internal Loop Power External Loop Power

+

–

J25-1
J25-2

J25-4

HART

R

ST100A

HART

I/O

LOAD

J25-1
J25-2

J25-4

HART

Master

ST80/ST80L

HART

(a) HART Single Connection

J25-1
J25-2

ST100A

HART

J25-4

J25-1

J25-2
J25-4

NC

+
–

ST100A

HART

Network P.S.

24 VDC

HART+HART–

Network P.S.

24 VDC

HART+HART–

J25-1
J25-2

J25-4

R

HART

LOAD

I/O

R

HART

LOAD

I/O

HART

Master

HART

Master

(b) HART Network, Multidrop

Figure 23 – Single Connection and Multidrop HART Setups

4-20 mA Output Connections

The ST80/ST80L is provided with two 4-20 mA current loop channels as standard via the J25 Phoenix connector terminals. Refer to Figure

16 and Figure 22. Similar to flow element connector TB1 the J25 connector is a detachable plug that plugs into the header socket on the

board. The connector plug accepts 28-16 AWG (0.14 mm
Ch. 1 is dedicated to HART (see above for connection details). Connect the instrument’s second 4-20 mA output (Ch. 2, J25-3) as required

for your application. Use any RTN terminal (e.g., J25-4 through J25-6) for the 2nd channel current loop return.

2

- 1.5 mm2) wire (refer to Table 2, page 20 for wire size vs. length info).

26 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

RS-485 MASTER

2-WIRE ONLY DEVICE

DEVICE 1 DEVICE 2 DEVICE 3

One twisted wire pair
plus Gnd/Common.

To remaining
RS-485 Devices

DATA (B)+

DATA (A)-

GND

DATA (B)+

DATA (A)-

GND

DATA (B)+

DATA (A)-

GND

DATA (B)+

DATA (A)-

GND

C01415-1-1

Modbus Connections

Referencing Figure 16 connect the Modbus device/network to Phoenix connector J8 on the main board. Note that the J8 connector is also
used for F
accepts 24–12 AWG (0.2 mm

OUNDATION Fieldbus and PROFIBUS wiring (only one interface can be active at a time). See Figure 24 below. Connector J8

2

– 1.5 mm2) wire (refer to Table 2, page 20 for wire size vs. length info). It is recommended that wiring have

a flammability rating of UL 2556 VW-1 or equivalent.

Figure 24 – Modbus/PROFIBUS/Fieldbus Connections, J8

Connect the ST80/ST80L to a Modbus device/network using a 2-wire RS-485 connection scheme as shown in Figure 25 below. For details
on Modbus operation refer to Modbus Operation, page 70.

Figure 25 – Modbus Wiring

Fluid Components International LLC 27

INSTALLATION ST80/ST80L Flow Meter

J12

J13

Install Jumper Shunt over Pins 

1 and 2

1 and 2

J9

J10

J11

Line Biasing (pullup)

●

—

—

150 Ω Termination

— ● —

Line Biasing (pulldown)

— — ●

Note:

Foundation Fieldbus/PROFIBUS operation is provided through an optional add-on card that plugs into the

ST80/ST80L

Fieldbus/

PROFIBUS

Interface (J8)

Field

Device

Add’l
Field

Device

Wire Pair

FB_A

FB_B

Terminator Terminator

Signals

TT

C01432-1-1

Modbus Configuration

Refer to Figure 18 on page 22. To set J8 for Modbus operation install a 2 mm jumper shunt onto the J12 and J13 jumper pins as shown in

Table 3 below.

Table 3 – Modbus Select Jumpers

As required for your application set 2 mm jumper shunts as needed to configure the bus lines as listed in Table 4 below. Termination is
typically required for applications with faster data rates or long cable lengths or both. Enable the instrument’s terminator as required for
your application. Line biasing is used to ensure that lines are at a known state (noise can cause a false trigger on a floating line). Check
first that the RS-485 network is not already biased before enabling the ST80/ST80L line biasing.

Table 4 – Modbus Line Configuration Jumpers

Note: 1. ● = Jumper Installed

OUNDATION Fieldbus/PROFIBUS Connections (Option)

F

Referencing Figure 16 connect the F
the J8 connector is also used for the Modbus wiring (only one interface can be active at a time). See Figure 24 above. Connector J8
accepts 24–12 AWG (0.2 mm
a flammability rating of UL 2556 VW-1 or equivalent.

OUNDATION Fieldbus/PROFIBUS device/network to Phoenix connector J8 on the main board. Note that

2

– 1.5 mm2) wire (refer to Table 2, page 20 for wire size vs. length info). It is recommended that wiring have

Connect the ST80/ST80L to a Fieldbus/PROFIBUS device/network as shown in Figure 26 below. Note that devices are connected in
parallel (star fashion).Use a terminator as appropriate for your application. For details on PROFIBUS operation refer to the ST80/ST80L
PROFIBUS PA manual 06EN003493. For details on F

OUNDATION Fieldbus operation refer to the ST80/ST80L FOUNDATION Fieldbus

manual 06EN003492.

ST80/ST80L main board.

Figure 26 – Fieldbus/PROFIBUS Wiring

28 Fluid Components International LLC

ST80/ST80L Flow Meter INSTALLATION

J12

J13

Install Jumper Shunt over Pins 

2 and 3

2 and 3

J9

J10

J11

Line Biasing (pullup)

●

—

—

150 Ω Termination

— ● —

Line Biasing (pulldown)

— — ●

FOUNDATION Fieldbus/PROFIBUS Configuration

Refer to Figure 18 on page 22. To set J8 for FF/PROFIBUS operation install a 2 mm jumper shunt onto the J12 and J13 jumper pins as
shown in Table 5 below.

Table 5 – FOUNDATION Fieldbus/PROFIBUS Select Jumpers

As required for your application set 2 mm jumper shunts as needed to configure the bus lines as listed in Table 6 below. Termination is
typically required for applications with faster data rates or long cable lengths or both. Enable the instrument’s terminator as required for
your application. Line biasing is used to ensure that lines are at a known state (noise can cause a false trigger on a floating line). Check
first that the RS-485 network is not already biased before enabling the ST80/ST80L line biasing.

Table 6 – FOUNDATION Fieldbus/PROFIBUS Line Configuration Jumpers

Note: 1. ● = Jumper Installed

F

OUNDATION Fieldbus/PROFIBUS Add-On Card Diagnostics/Test

As shown in Figure 18 on page 22 a mini-DIP switch (use push pin or ballpoint pen to actuate) controls the optional Fieldbus/PROFIBUS
add-on card’s #SIM_ENABLE, #NV_ERASE, and #HW_LOCK test signals. This provides a means to activate a “simulate mode” for
Fieldbus conformance testing and for add-on card testing/diagnostics. A particular signal is active when its switch is set to ON. For normal
use all switches are OFF.

Service Port Connection, USB

The ST80/ST80L is provided with a USB service port that is used to configure/monitor the instrument via a PC. Refer to Configuring the

ST80/ST80L, page 31 for further information on service port use.

● USB 2.0 – USB Type B connector J21 on the main board (for local connection of PC to the instrument)

Post Installation Check

Verify all wiring connections are secure and correct to the appropriate wiring diagram. Verify the flow direction arrow on the flow element is pointing
in the right direction. Verify the mechanical process connection is secure and meets the system pressure requirements.

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INSTALLATION ST80/ST80L Flow Meter

This Page Intentionally Left Blank

30 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Hot Key,

3 OPERATION

Basic Commissioning and Start-Up

Verify the wiring and then apply power to the instrument. LCD-equipped instruments briefly show a welcome screen indicating the
instrument model and core version followed by the normal operation process screen. The normal process screen shows: percentage of
flow bar, icons (if present), process flow rate, totalized flow (optional), temperature in customer units, pressure (optional) in customer units,
calibration group and group name. Once set up there is little need for interaction between the operator and flow meter. Configure the
instrument as necessary using either the HMI interface (option) or the ST80/ST80L configuration software application.

Configuring the ST80/ST80L

There are two ways to configure the ST80/ST80L:

● HMI Front Panel Menu – For instruments with the optional HMI display, access the instrument’s service menu as described in HMI

Option, Basics below.

● ST80/ST80L Configuration Software application – The ST80/ST80L comes with Windows software (PC only) that provides

comprehensive programming of the instrument’s settings. Refer to ST80/ST80L Configuration Software, page 35.

HMI Option, Basics

The HMI (Human-Machine Interface) option provides the ST80/ST80L with a b uilt-in setup tool. Four IR (infrared) sensor buttons located at
the 3, 6, 9, and 12 o’clock positions on the display provide access to basic setup parameters. The HMI Service menu can be accessed
through the window without removing the electronics enclosure lids. Enter the HMI service mode by touching the glass in front of the 12
o’clock sensor (Hot Key) for 3 seconds. The LCD acknowledges the button selection by flashing then inverting the display characters and
background while the button is held.

Figure 27 – Hot Key on the Optional HMI Display

ENTER Setu p (hold 3 sec.)

Fluid Components International LLC 31

OPERATION ST80/ST80L Fl o w Meter

Notes:

The optional HMI interface provides for quick adjustments using only a subset of instrument programming

A menu item with an asterisk (*) is inaccessible due to an active connection to a PC running the configurator software

To accommodate various instrument mounting situations the LCD can be electronically rotated for easy viewing. Refer to

Scroll UP

SELECT

Scroll DOWN

RETURN

HMI Display Menu Navigation

Use the four IR sensors to navigate the HMI Service menu. Touch the top/bottom sensor to scroll up ()/down () through the menu
selections. Touch the right sensor to select (). Touch the left sensor to go back () to the previous menu.

Some setup parameters are password protected—when prompted enter the HMI user password: E#C. Use the Up/Down scroll key to
select a character. After scrolling to the desired character, touch the Select () key to go to the next character. After entering the password
the display returns to the menu item. Select the item again by touching the Select key.

Immediately exit HMI service mode and return to the process display by touching the bottom () sensor for 2 seconds. Backing out of
menus via repeated touches of the left button also exits the service mode. Refer to HMI Menu Outline, page 131 for an overall view of the
menu structure. Note that the front panel menu provides only a small subset of the instrument’s settings. This makes the front panel menu
an ideal tool for quick adjustments.

commands. Use the ST80/ST80L configuration software application for in-depth programming.

(only one master can be active at a time), or an extended mode is in effect which restricts group selection.

Display Options, page 34 for details.

Previous Menu

or EXIT Setup (hold 2 sec.)

Figure 28 – HMI Display IR Sensor Functions

32 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Note:

The setup options described in this section (except Language) can also be changed via the configuration software.

Setup (Sele cted)

Setup Menu Items

Instrument

Display

Language

Instrument O ptions (Top Scroll)

Instrument O ptions (Bottom Scroll)

Basic Setup Options, HMI

Figure 29 below summarizes the basic setup options using the optional HMI. Enter the HMI user password as required when changing a

setup parameter.

Refer to Basic Setup Options, Configuration Software on page 35.

Figure 29 – Basic Setup Options, HMI

INSTRUMENT OPTIONS

Figure 30 below summarizes the Instrument options pertaining to the currently selected group (of which there are five). Enter the HMI user

password E#C as required when changing a setup parameter.

Figure 30 – Instrument Setup Options

Fluid Components International LLC 33

OPERATION ST80/ST80L Fl o w Meter

Flow Type

Flow Timebase

Std Feet

Nml Meters

Std Cu Feet

Per Second

Nml Cu Meters

Per Minute

Nml Liters

Per Hour

Pounds

Per Day

Kilograms

Metric Tonnes

Display/Orientation

Display/Contrast

Instrument setup includes the following parameters:

• Flow – Sets flow parameters including flow type and flow timebase. Table 7 below summarizes the Flow parameters. The default is

Vel Flow, SFPS (Standard Feet Per Second).

• Temperature (Temp) – Sets the temperature scale in use: Degrees C (Celsius) or Degrees F (Fahrenheit). The default is Degrees F.

• Pressure (Pres) – This normally sets the pressure units in use. Since ST80/ST80L cannot read pressure this value is not applicable

and is fixed at psi(a).

• Name – This sets a descriptive name for the displayed process flow. Use a name as required for your application. The default is Empty.

• Restore – Select this item to restore the instrument setup parameters to the factory defaults.

• Pipe – This sets the pipe geometry. Choose between Round and Rectangular. When set to Round the diameter (D) dimension is shown

– set the diameter of the round pipe in inches (default is 1.0"). When set to Rectangular the width (W) and height (H) dimensions are
shown – set the width and height of the rectanglular pipe in inches. The default is Rectangular, W: 1.0", H: 10.0".

Table 7 – Flow Parameters, HMI

Velocity Ve l Flow

Volumetric Vol Flow

Mass Mass Flow

Note: Bold type indicates factory default setting.

D

ISPLAY OPTIONS

Figure 31 below summarizes the display setup options.

Figure 31 – Display Setup Options

Display setup includes the following parameters:

• Orientation – Use this parameter to change the LCD orientation for easier viewing. Selecting Orientation changes the display to

arrows pointing to the four sides of the LCD. Press the corresponding IR sensor to assign that side as the LCD top.

• Contrast – Use this parameter to adjust the display contrast via the Scroll Up/Scroll Down buttons. Contrast decreases with upward

movement of the bar graph.

ANGUAGE OPTION

L
There is currently only one language option: English (default/fixed).

34 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Note:

before

Use these ta bs for basic setup programming.

ST80/ST80L Configuration Software

The ST80/ST80L comes with a configurator utility (Windows) that provides comprehensive programming of the instrument’s settings via a
PC connection to the instrument’s USB service port (refer to Service Port Connection, USB , page 29). Configure the ST80/ST80L to your
application using the ST80/ST80L configuration software. Refer to the ST80/ST80L Configuration Software manual 06EN003491 for full
instructions on the use of the application. Refer also to ST80/ST80L Configuration Software Application (User Password: 2772) below for
further details.

Make sure the ST80/ST80L is up and running

connecting to USB or launching the configurator application.

Basic Setup Options, Configuration Software

The setup parameters accessed by the optional HMI are also accessible via the configuration software’s Basic Setup menu. See Figure

32 below. For units without an HMI display use the configuration software to perform basic instrument setup. The Basic Setup menu tabs

to use are: Groups, Units, Pipe Size, and Display Settings. If needed, use the Alarms and Totalizer tabs to complete the instrument
configuration. Refer to Basic Setup Options, HMI on page 33 for an overview of the setup parameters. Refer also to the ST80/ST80L
Configuration Software manual 06EN003491 for detailed information about the software.

Verify Engineering Units

Verify that the engineering units are correct for flow rate and temperature. Use the HMI menu or configuration software to make any
necessary changes.

System Faults, Alarms and Logging Indication

The ST80/ST80L optional display shows system faults, alarms, and data logging activity by displaying three different icons when these
conditions are present. As shown in Figure 33 below, these icons appear directly above the flow rate indication on the main process data
screen. FAULTS are displayed as a caution triangle icon, ALARMS as a bell icon, and LOGGING as a paper sheet icon (logging feature
not applicable to ST80/ST80L).

Fluid Components International LLC 35

Figure 32 – Configuration Software Tabs for Basic Setup Functions

OPERATION ST80/ST80L Fl o w Meter

Logging, Alar m, and Faul t Icon s

Figure 33 – Example Log, Alarm, and Logging Icons on the Optional Display

ST80/ST80L Configuration Software Application (User Password: 2772)

The ST80/ST80L configuration software application provides full access to instrument programming. However, this requires opening the electronics
enclosure and attaching a PC to the instrument’s USB service port. The ST80/ST80L configuration software application is intuitive, easy to use and
the preferred method for commissioning the instrument.

Use a passive, straight-through USB 2.0 cable with a type-A male connector on one end and a type-B square plug on the other end (as supplied with
the instrument). Connect the USB cable’s type-A connector to the computer’s USB port. Connect the other end of the cable to the instrument’s USB
receptacle (remove blind lid to access the USB service port). With instrument power ON, launch the application by double clicking the configuration
software’s icon on the PC's Windows desktop: An example of the configurator Welcome screen is shown below.

A local USB connection to the PC is the primary communication method—click USB Connect to activate this connection, which results in the display
of the Process Data screen as shown in the example in Figure 35 below.

36 Fluid Components International LLC

Figure 34 – The Configurator Welcome Screen

ST80/ST80L Flow Meter OPERATION

Note:

An asterisk (*) shown next to a menu item on the optional display means that the item is “locked out” due to the flow

Figure 35 – Example Process Data Screen

With the configuration software running on the attached PC the user has access to all configurable features of the ST80/ST80L instrument. When
prompted, enter the User Level Password (2772) to make parameter changes. For more detailed instructions on the configuration software, refer to
the ST80/ST80L Configuration Software manual 06EN003491.

meter communicating with the configurator. Note also that the HMI presents only a subset of configurable settings.

Real Time Clock

The ST80/ST80L system time is maintained by a battery-powered real time clock that is set to Pacific time at the factory. Synchronize the flow
meter’s system time to the installed location’s local time using the configuration software (the date/time cannot be programmed via the HMI).

Start the ST80/ST80L configuration software application. Click USB Connect on the welcome screen. Select the Advanced Setup branch from the
menu tree on the window's left side. Select the Date and Time tab. See Figure 36 below.

Figure 36 – Example Date and Time Set Screen

Fluid Components International LLC 37

OPERATION ST80/ST80L Fl o w Meter

Total

Click Get from Device. This displays the current date and the ST80/ST80L system time. If needed, set the correct date using the field's calendar
date picker and time using the field's spinner buttons. Click Send to Device to save the changes to the instrument.

Totalizer Setup

The flow totalizer function accumulates the instrument total flow, much like the odometer on an automobile. The engineering flow units must be set in
mass or volumetric units for the function to work. The totalized flow value is displayed directly below the indicated flow rate on the instrument display.
The totalizer is enabled and displayed by default. Use the ST80/ST80L configuration software to set up the totalizer (the totalizer cannot be
programmed via the HMI).

Flow Value

Figure 37 – Example Totalizer Display Showing Total Flow Value

Start the ST80/ST80L configuration software application. Click USB Connect on the home screen. Select the Basic Setup branch from the menu
tree on the window's left side. Select the Totalizer tab. Configure as desired (check/uncheck the check boxes). Click Send to Device to save the
changes to the instrument (enter the user level password 2772 when prompted). Click Get from Device to verify any changes.

Figure 38 – Totalizer Setup Screen

38 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Caution:

Only in certain cases should the instrument be configured from AST™ to Constant Power. Consult the factory for

Note:

The VC and VD data fields are DAC values used in the heater modes. This data is for factory use only.

Configuring for AST™ or Constant Power Measurement Methods

The default factory sensor heater configuration is AST™ (Adaptive Sensing Technology) in which the instrument automatically transitions
between constant Delta T operation (heater power to maintain Delta T proportional to flow) and constant power operation (constant heater
power and sensor Delta T proportional to flow) to measure the flow rate. Refer to Theory of Operation, page 1. The alternate heater mode
choice is Constant Power mode (only).

guidance to determine if the Constant Power mode is optimum for your process conditions.

Use the configuration software to set the heater mode to AST or Constant Power as follows (refer to the ST80/ST80L Configuration
Software manual 06EN003491 for software details):

1. Access the AST Power Mode tab from the Configuration branch of the menu tree. See Figure 39 below.

2. In the AST Heater Power Mode field, pull down the Power Setting menu and select Constant Power or AST (default).

3. If AST is selected, pull down the Max. Current menu and select the maximum current at which the unit transitions to Constant
Power: 105 mA or 90 mA (default).

Figure 39 – Example AST Power Mode Tab (Configuration)

Fluid Components International LLC 39

OPERATION ST80/ST80L Fl o w Meter

Caution:

High flow damping values result in reduced flow response. Make sure that alarm conditions are not affected when

Flow Filtering

Use the configuration software to adjust flow filtering (Advanced Setup/Flow FIltering) as required for your application. Refer to the
ST80/ST80L Configuration Software manual 06EN003491 for software details. The Flow Filtering setup screen is shown in Figure 40
below. Two types of flow filtering are available: Flow Output Damping and Flow Input Moving Average Filter.

Figure 40 – Flow Filtering Setup Screen

Flow Output Damping

Use the Flow Output Damping field to smooth out the flow signal output for applications in which process conditions are erratic or for
applications using the more sensitive AST (Adaptive Sensing Technology) configuration.

As shown in Figure 41 below, an increase in flow damping value results in an output that is increasingly resistant to change (amplitude
variations). Compare the chart’s blue curve (value = 0.25 for 0% flow damping) with the chart’s black curve (value = 5.00 for 95% flow
damping). The black curve shows signal excursions that are much more constrained relative to the blue curve.

The minimum value that can be entered is 0.25 (0% flow damping). It is possible to enter a number greater than 5.0 (95% flow damping).
The practical limit, however, is 5.0 since 100% flow damping will never be attained regardless of the entered value.

using the flow damping feature.

40 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

63.600

63.800

64.000

64.200

64.400

64.600

64.800

65.000

0 50 100 150 200 250 300

mA Output Converted to SFPS

Data Logger Samples (Every 250 mS or 240/Minute)

Damping = 0.25
Damping = 1.00
Damping = 3.00
Damping = 5.00

C01406-1-1

NAMUR Setup

Figure 41 – Chart: Flow Output Over Time with Various Flow Damping Values

Flow Input Moving Average (Boxcar) Filter

Use the Flow Input Moving Average Filter field to smooth out the input flow signal using a moving average (boxcar) filter. The boxcar filter

X

averages the last

number of readings. A larger boxcar value does a better job of averaging at the expense of a slower response time.
The factory default boxcar value is 8 (readings). With readings occurring at 5 times a second, the factory boxcar setting is an average of
the last 1.6 seconds.

Caution: High boxcar values result in reduced flow response time. Make sure that alarm conditions are not affected when

using the moving average filter.

NAMUR NE43 is a German fault detection standard that lets the user know if there is a fault within the instrument by forcing the 4-20 mA
output current outside the normal operating range of the instrument.

Figure 42 – NAMUR Fault

Fluid Components International LLC 41

Use the ST80/ST80L configuration software to enable/configure the NAMUR feature. The optional front panel HMI interface cannot access
NAMUR.

Click USB Connect on the home screen. Select the Configuration branch from the menu tree on the window's left side. Select the 4-20mA
User tab. Tick the desired channel’s NAMUR Enabled checkbox.

OPERATION ST80/ST80L Fl o w Meter

Fault Bit

Fatal Fault Error or Status Description

1

CORE: any of these errors: I2C error, UART error, Mutex error, or Watchdog Reset.

4

CORE: unable to update process data (PD_NO_FE_DATA). Unable to get/use data from any active FEs.

6

CORE: detects FRAM/SPI error.

11

(Any) FE Board Temperature Out of Limits

14

CORE: unable to communicate with one or more FEs (PD_COMM_ERROR).

20

CORE: averaged temperature above “Temperature Max.”

21

CORE: averaged temperature above “Temperature Min.”

22

(Any) FE reports SENSOR_HEATER_SHORTED_FAULT.

24

(Any) FE reports SENSOR_HEATER_OPEN_FAULT.

27

(Any) FE reports SENSOR_ ADC_BELOW_ MIN_FAULT.

30

(Any) FE reports SENSOR_ ABOVE_ MAX_TEMPERATURE_FAULT.

31

(Any) FE reports SENSOR_ UNDER_ MIN_TEMPERATURE_FAULT.

Note: The NAMUR settings field in the 4-20 mA User tab will only show when the output is set for Flow or HART Flow. If

Temperature output is selected the NAMUR settings will not show up. NAMUR only works on Flow outputs.

field,

In the window's NAMUR
Send to Device to save the settings to the instrument. To discard changes just exit the screen (do not click Send to Device).

define the NAMUR output level by clicking either Set NAMUR @ 3.6 mA or Set NAMUR @ 21.0 mA. Click

Figure 43 – NAMUR Output Level Selection (4-20 mA User Tab)

When NAMUR is enabled, and a fatal fault is detected, the 4-20 mA output is forced to the preselected NAMUR output level. Use the Click
to Test NAMUR button (forces NAMUR output) as needed to verify the system setup and wiring.

Table 8 – Fatal Faults that Trigger NAMUR

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ST80/ST80L Flow Meter OPERATION

Note:

Internal Delta-R Resistor (idR) Check

The Internal Delta-R Resistor (idR) Check is a routine designed to assess the ST80/ST80L internal normalization. The normalization process fine
tunes the instrument’s ability to accurately measure resistance. Proper normalization also allows FCI electronics to be interchangeable for
replacements, spares or repaired boards. If the unit’s normalization shifts, the accuracy of the meter may be compromised.

By passing the same sensor excitation current used to power the RTDs across three high precision idR resistors (60 Ω, 100 Ω, and 150 Ω) trendng
patterns can be established. Periodically run the idR check to verify proper operation of the ST80/ST80L electronics. Use the idR check as a
troubleshooting tool to isolate a fault between the sensor and the electronics.

Running the idR Check Using the Optional HMI

Hold the “Hot Key” (top sensor) for three seconds. Select Diagnostics and then Self T est . Select FE 1 IDR and enter the User Level Password
(E#C). After successful password entry the display shows the FE 1 IDR list again. Select (again) the desired FE. Observe that Test in Progress
displays along with a timer counting down the seconds. See Figure 47, page 45 for the idR test display sequence.

When the idR check completes the expected and measured values for each idR resistor are shown on the HMI display as shown in the
example in Figure 44 below. The left part of the screen shows the expected (EXP'D) values. The right part of the screen shows the
measured (MEAS'D) values. If all three checks pass (“P” shown at the right of all lines), PASSED displays at the bottom. Should any one
of the three checks fail (“F” shown at rightmost part of a line), FAILED displays at the bottom. Data from an HMI-initiated idR check is not
saved; therefore, record the data by hand as required.

Figure 44 – Example idR Check Results Display

Running the idR Check Using the ST80/ST80L Configuration Software
Click USB Connect on the home screen. Select the Diagnostics branch from the menu tree on the window's left side. Select the idR

Scheduled Tests tab. See Figure 45 below. Select the “FE #” desired from the Selected FE drop-down list (only FE1 shows for

ST80/ST80L). Two settings that affect scheduled and on-demand idR tests are provided on this screen: FEx Internal Delta-R Pass Fail
Criteria, Maximum Allowed Error (default = 0.5 ohms) and FE1 Output Mode During Test, Mode (default = Freeze Flow During Test).

Make changes to the default settings as required for your application.
In the FE1 Schedule Internal Resistor Check field, use the Mode drop-down list to select a schedule mode: Disabled (default), Day of Month

(1-28), Day of Week (0=Sun), or Every(Day). Use the Day, #days, DOW spinner control to define the selected schedule mode. Use the Time
spinner control to enter the desired scheduled check start time. Alternatively, click Run test now on FE1 to run the idR check on demand
(enter User level code 2772).

When an idR check is started from the configuration software (scheduled or on-demand) the displays shows the Fault
icon ( ) above the flow rate as the check runs. The Fault icon disappears when the idR check completes.

After clicking Run test now on FE1 the FE1 idR Test Results field displays the expected and the measured resistance values. These
instant checks are not logged to onboard memory (FRAM) and not displayed under the idR Test Logs tab as the Scheduled Tests files.

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OPERATION ST80/ST80L Fl o w Meter

Figure 45 – Example Internal Delta R Scheduled Screen (After Clicking "Run test now...")

The result for a scheduled idR check is logged in FRAM. Click Get Test Log from Device in the idRTest Logs tab to view the idR test log
as shown in the example in Figure 46 below.

Figure 46 – Example Internal Delta R Test Logs Screen

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ST80/ST80L Flow Meter OPERATION

HOT KEY

1. Normal Operation Display:
seconds.

2. Select Diagnostics.

3. Select Self Test.

4. Select FE1 IDR (FE 2 applicable

5. Input Password E#C.

6. Select (Enter) Password.

7. Select FE1 IDR again.

8. Observe idR test in progress

9. idR Test is Complete. Record

Select and hold the hot key for 3

to ST100A Series only).

Figure 47 – Internal Delta-R Resistor Check (idR) HMI Display Sequence

(seconds countdown).

values for comparison.

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OPERATION ST80/ST80L Fl o w Meter

Analog Output Response to idR Check

During the idR sequence the analog outputs respond as listed below. Readings are taken with a 250 Ω load across Analog Output 1, 2 or 3.

NAMUR Enabled LOW

2.325 Vdc = 23.16 sfps = baseline (example: actual flow output varies from 1-5 volts)

0.900 Vdc = idR In Progress

1.000 Vdc = momentary state

2.326 Vdc = after 3 seconds. idR values are displayed now.
NAMUR Enabled HIGH

2.325 Vdc = 23.16 sfps = baseline (example: actual flow output varies from 1-5 volts)

5.250 Vdc = idR In Progress

1.000 Vdc = momentary state

2.326 Vdc = after 3 seconds. idR values are displayed now.
NAMUR Enabled Disabled

2.325 Vdc = 23.16 sfps = baseline (example: actual flow output varies from 1-5 volts)

1.000 Vdc = idR In Progress

2.326 Vdc = after 3 seconds. idR values are displayed now.

Using Digital Outputs

Digital busses (includes HART, Modbus, and FOUNDATION Fieldbus/PROFIBUS) are mutually exclusive, meaning only one can be active at
a time. When a particular digital output is specified at order time the unit is configured appropriately at the factory. Use the ST80/ST80L
configuration software (Configuration/Output) to change the digital output selection. Refer to the ST80/ST80L Configuration Software
manual 06EN003491 for details. Note that enabling a digital bus will deactivate the other digital bus currently in effect. Figure 48 below
shows the configuration software dialog box that appears when the user assigns 4-20 mA #1 to HART Flow with another digital bus
already active.

FOUNDATION Fieldbus/PROFIBUS operation requires the optional Fieldbus/PROFIBUS add-on card installed on the main board. Refer to

OUNDATION Fieldbus manual (06EN003492) and PROFIBUS manual (06EN003493 or 06EN003494) for operation details on these

the F
digital outputs.

Figure 48 – Digital Bus Deactivation Warning When Enabling HART

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ST80/ST80L Flow Meter OPERATION

HART Variable Code

Device Variable

0

Volumetric Flow1

Primary Variable

0

66

1

Volume (Totalizer)

Secondary Variable

1

68

2

Mass Flow1

Primary Variable

2

72

3

Mass (Totalizer)

Secondary Variable

3

71

4

Velocity Flow1

Primary Variable

4

67

5

Temperature

Tertiary Variable

5

64

HART Operation

HART (Highway Addressable Remote Transducer) is a communication protocol that superimposes a low level digital data signal on a 4-20 mA
current loop. The primary function of the instrument’s HART interface is to present process data via process data commands 1, 3 and 9. Use the
configuration software (Configuration/Output) to set the instrument to HART mode by assigning 4-20 mA #1 to HART FLOW. Refer to the
ST80/ST80L Configuration Software manual 06EN003491 for details.

The ST80/ST80L does not implement the HART Burst mode. A HART master that supports HART 7.0 and higher is required. If using a
HART communicator, a unit that supports HART 7.0 or higher is required (i.e. Emerson 475 Communicator). Connect the installation
(factory/plant) HART wiring to the instrument as described in HART Connections, page 25.

Process Data Operation

The ST80/ST80L implements HART 7.0 while maintaining compatibility with earlier versions of the HART protocol. However, HART
commands 1 and 3 have been simplified to only report the primary variable Flow. Use command 9 to access the full suite of available
dynamic variables including temperature, totalizer, and others.

ST80/ST80L HART Process Data Organization

This section describes how the instrument process data is organized under the HART command 9. For details on command 9 see the
HART Specification “Universal Commands Specification” HCF_SPEC-127, Revision 7.1 and the command 9 description on page 54.

ST80/ST80L Process Variable Slots

Table 9 below lists the instrument’s 6 process variables that are read by HART command 9, with each process variable assigned a slot number.

Not all the variables described in this section are available in all configurations of the flow meter. For example, the Flow Totalizer may be
turned on or off.

The process variables include 3 flow classes or types of which only one class of flow is active at a time.

Table 9 – ST80/ST80L HART Process Variables

Slot # Process Variable

Note: 1. Only one active at a time.

Primary Variable Classifications

The instrument can provide flow data in unit types that span several HART classifications. Commands 50 and 51 are used to read and set,
respectively, which flow variable will be mapped to the primary variable. The PV device variable classification can only be one of the following:

● 0: Volumetric Flow

● 2: Mass Flow

● 4: Velocity Flow

Since only PV is used in this manner, command 50 returns 250 for SV, TV, and QV. The setting of the device variable classification determines
which class of flow-related variables is valid, and therefore displayed as implemented when variable slots are read by command 9.

Description

Device Variable Code

Classification

Device Description Files

A Device Description (DD) file lets the HART handheld or host software application fully configure any HART device for which it has a DD
installed. The ST80/ST80L DD files are available for download (pending) from the FieldComm Group website:

https://fieldcommgroup.org/registered-products/

Search by Manufacturer (Fluid Components International LLC) to find the instrument’s files under the product name: FCI ST80/ST100A
Series. The posted DD files are contained in a zip archive with FCI’s manufacturer ID and product device type hex values embedded in the
filename (e.g., hart.0000a6.a677.zip).

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OPERATION ST80/ST80L Fl o w Meter

Note:

The ST80/ST80L and the ST100A Series are in the same product family.

Product Name

Product Type

HART Version

Mfgr. ID

Device Type

Dev. Revision

FCI ST80/ST100A

Series

Note:

The ST80/ST80L uses the same DD files as the ST100A Series. The handheld communicator screens will, therefore,

Table 10 below summarizes the instrument’s FieldComm Group device registration information.

Table 10 – ST80/ST80L HART Field Device Registration Information

Flow 7 0x00A6 0xA677 01

EDDL Files

The ST80/ST80L EDDL (Electronic Device Description Language) files are support files that provide an extended description of each
object in the Virtual Field Device (VFD), and provide information needed for a control system or host to understand the meaning of the data
in the VFD including the human interface. The EDDL file can be thought as a “driver” for the device.

Loading the DD Files to the 475 Field Communicator

Use the “Easy Upgrade Utility” from EMERSON to load the DDPs into the Field Communicator. Below is the procedure for how to load DD
files into the 475-Field communicator.

Open the Field Communicator Easy Upgrade Utility program and click Utilities on the left hand menu. Select Import DDs from a local
source. Then select the FCI files from the resulting List dialog and click on OK. See Figure 49 below.

Figure 49 – Field Communicator Easy Upgrade Utility, Import DD

Service Data Operation

Shown below is example service information as provided by the Emerson 475 HART communicator with FCI’s DD files loaded. The same
information seen by the 475 is shown in the DCS (Distributed Control System) when the ST80/ST80L HART DD files are loaded. The
screens shown below are a subset of the total 475 HART communicator information for the ST80/ST80L.

show both ST80 and ST100A. ST100A-specific differences are noted in the text below.

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ST80/ST80L Flow Meter OPERATION

Root Menu

Shown below i s the Root Menu as displayed on the Emerson 475 HART
communicator.

Device Setup (from Root Menu)

The Device Setup function is a gateway to ST80/ST80L device i nformation,
process data and setup, both basic and advanced. Additional o ptions include K
Factor displ ay/adjust, totalizer reset, and customer flow limits.

Basic Setup (from Device Setup)

The Basic Set up function includes the ability to review and ch ange the
engineering units of the process variables, review and change the plenum or pipe
size, enable or disable the Totalizer, review and change devi ce information, reset
the operation of the ST80/ST80L to th e factory settings, enabl e or disable the
write protec t, and PV Setup.

Process Data Example (from Device Setup)

The Process Data screen lets you revi ew process dat a including flow rate, temperature,
pressure, and the process variable’ s 4-20 mA current loop output value.

Process Data Time Example (from Device Setup)

The Process Data Time screen lets you revi ew the curr ent process variabl e value and
its engineering units, device st atus, and the current date and time (24-hour clock).

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OPERATION ST80/ST80L Fl o w Meter

Engineering Units Example (from Basic Setup)

Factory Reset (from Basic Setup)

CAUTION – Th e Fact or y Res et com mand r el oads t he c on fi gurat i on and cal ibr ati on

parameters that were l oade d int o the i ns tr ument dur ing t h e ori ginal cal i brat ion and
setup. Any subseque nt changes ma de t o th e c ali brat i on paramet ers c onf igur ati on
will be lost when the Fac t ory Res et com mand i s exec ut ed.

Device Configuration (from Advance Setup  Device Setup)

Use the device configuration functi on to view/set up the flow m eter’s 4-20 mA
current output channels. Raw DA counts are shown for 4 mA and 20 mA and the
output variable is shown as OFF, Flow, Temperature, or Pressure*.

*NOTE – Channel 3 setup and the pressure variabl e selection apply to ST10 0A
Series only.

Device Status (from Device Setup)

Use the device status function to see the hex values of the Command 48
Additional Device Status (6-byte fiel d, bytes 0-5). The topmost “Device status”
shows the value of the “More Status Available” bit within the HART command
response data field (b4 in 2
subsequent error(s) shown in the Addit ional Device Status bytes (Command 48).
If b4 is cleared, there is no additional status to report. Refer t o Co mm a nd 48,

Additional Device Status Bytes, page 68.

nd

byte). If b4 is set, more status is available and the

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ST80/ST80L Flow Meter OPERATION



Device Factory Calibration Example (from Advance Setup

Device Setup)

The Device Fac tory Calibration funct ion lets you review the li m its that have been
set for the Fl ow, Temperature, and Pressure* process parameters.

*NOTE – Pressure limits apply to ST100A Series only.

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OPERATION ST80/ST80L Fl o w Meter

Command 0: Read Unique Identifier

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Unsigned-8

254

1–2

Enum

Expanded Device Type

3 Unsigned-8

Minimum number of preambles from master to slave

4 Unsigned-8

HART Protocol Revision Number: 7

5 Unsigned-8

Device Revision Number

6 Unsigned-8

Software Revision Number

7 Unsigned-5

(Most Significant 5 Bits) Hardware Revision Level

7 Enum

Physical Signaling Code: 00 = Bell 202 Current (4-20 mA)

8 Bits

Flags: (Unused)

9–11

Unsigned-24

Device ID

12

Unsigned-8

Minimum number of preambles from the slave to master

13

Unsigned-8

Maximum Number of Device Variables

14–15

Unsigned-16

Configuration Change Counter

16

Bits

Extended Field Device Status

17–18

Enum

Manufacturer ID Code: 166

DEC

/00A6

HEX

(FCI)

19–20

Enum

Private Label Distributor Code

21

Enum

Device Profile = 1 “HART Process Automation Device”

Response Codes

See Table 16, page 67, for response code list.

Command 1: Read Primary Variable (Flow Units, & Flow Value)

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Enum

Primary Variable Units Code

1–4

Float

Primary Variable Value

Response Codes

See Table 16, page 67, for response code list.

HART Command List Reference

The HART commands are divided into three classes.

● Universal Commands

● Common Practice Commands

● Device Specific Commands

Barring no communication error, a field or slave device returns a response code as part of the 2-byte status response to a command. Refer
to Command Status Bytes on page 66. The ST80/ST80L response codes listed in the following command summaries are a subset of the
response codes listed in the HART specification.

ST80/ST80L HART Universal Commands

The ST80/ST80L HART supports Universal Commands 0 through 22 and 38 and 48. Commands 4 and 5 are reserved under Universal
Command Specification Rev. 7.1 (HCF_SPEC-127, Revision 7.1) and not implemented in this specification. There is no HART command

10. Table 11 below summarizes the instrument’s HART Universal command set and the data associated with each command.

Table 11 – HART Universal Commands

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ST80/ST80L Flow Meter OPERATION

Command 2: Read Primary Variable Loop Current and Percent of Range

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–3

Float

Primary Variable Loop Current (mA)

4–7

Float

Primary Variable Percent of Range (%)

Response Codes

See Table 16, page 67, for response code list.

Command 3: Read Dynamic Variable (Flow) and Loop Current

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–3

Float

PV Loop Current: 4-20 mA

4 Enum

PV HART Unit Code, Flow

5–8

Float

PV Flow Value

Response Codes

See Table 16, page 67, for response code list.

Command 6: Write Polling Address

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Polling Address of Device

1 Enum

Loop Current Mode

Response Data Bytes

0

Unsigned-8

Polling Address of Device

1 Enum

Loop Current Mode

Response Codes

See Table 16 for response code list.

Command 7: Read Loop Configuration

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Unsigned-8

Polling Address of Device

1 Enum

Loop Current Mode

Response Codes

See Table 16, page 67, for response code list.

Command 8: Read Dynamic Variable Classifications

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Unsigned-8

Primary Variable Classification

1-3

Unsigned-8

SV, TV and QV not used ( Classification 0)

Response Codes

See Table 16, page 67, for response code list.

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OPERATION ST80/ST80L Fl o w Meter

Command 9: Read Device Variables with Status1

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Slot 0: Device Variable Code

1 Unsigned-8

Slot 1: Device Variable Code

2 Unsigned-8

Slot 2: Device Variable Code

3 Unsigned-8

Slot 3: Device Variable Code

4 Unsigned-8

Slot 4: Device Variable Code

5 Unsigned-8

Slot 5: Device Variable Code

6 Unsigned-8

Slot 6: Device Variable Code

7 Unsigned-8

Slot 7: Device Variable Code

Response Data Bytes

0

Bits

Extended Field Device Status

1 Unsigned-8

Slot 0: Device Variable Code

2 Enum

Slot 0: Device Variable Classification

3 Enum

Slot 0: Units Code

4–7

Float

Slot 0: Device Variable Value

8 Bits

Slot 0: Device Variable Status

9 Unsigned-8

Slot 1: Device Variable Code

10

Enum

Slot 1: Device Variable Classification

11

Enum

Slot 1: Units Code

12–15

Float

Slot 1: Device Variable Value

16

Bits

Slot 1: Device Variable Status

17

Unsigned-8

Slot 2: Device Variable Code

18

Enum

Slot 2: Device Variable Classification

19

Enum

Slot 2: Units Code

20–23

Float

Slot 2: Device Variable Value

24

Bits

Slot 2: Device Variable Status

25

Unsigned-8

Slot 3: Device Variable Code

26

Enum

Slot 3: Device Variable Classification

27

Enum

Slot 3: Units Code

28–31

Float

Slot 3: Device Variable Value

32

Bits

Slot 3: Device Variable Status

33

Unsigned-8

Slot 4: Device Variable Code

34

Enum

Slot 4: Device Variable Classification

35

Enum

Slot 4: Units Code

36–39

Float

Slot 4: Device Variable Value

40

Bits

Slot 4: Device Variable Status

41

Unsigned-8

Slot 5: Device Variable Code

42

Enum

Slot 5: Device Variable Classification

43

Enum

Slot 5: Units Code

44–47

Float

Slot 5: Device Variable Value

48

Bits

Slot 5: Device Variable Status

49

Unsigned-8

Slot 6: Device Variable Code

50

Enum

Slot 6: Device Variable Classification

51

Enum

Slot 6: Units Code

52–55

Float

Slot 6: Device Variable Value

56

Bits

Slot 6: Device Variable Status

57

Unsigned-8

Slot 7: Device Variable Code

58

Enum

Slot 7: Device Variable Classification

59

Enum

Slot 7: Units Code

60–63

Float

Slot 7: Device Variable Value

64

Bits

Slot 7: Device Variable Status

65–68

Time

Slot 0: Data Time Stamp

Response Codes

See Table 16, page 67, for response code list.

Note: 1. Command 9 takes in a variable list of parameters and similarly returns a variable length response.

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ST80/ST80L Flow Meter OPERATION

Command 11: Read Unique Identifier Associated with Tag

Byte

Format

Description

Request Data Bytes

0–5

Packed

Tag, Packed ASCII

Response Data Bytes

0

Unsigned-8

254 1–2

Enum

Expanded Device Type

3 Unsigned-8

Minimum number of preambles from master to slave

4 Unsigned-8

HART Protocol Revision Number: 7

5 Unsigned-8

Device Revision Number

6 Unsigned-8

Software Revision Number

7 Unsigned-5

(Most Significant 5 Bits) Hardware Revision Level: 1

7 Enum

Physical Signaling Code: 00 = Bell 202 Current (4-20 mA)

8 Bits

Flags: (Unused)

9–11

Unsigned-24

Device ID

12

Unsigned-8

Minimum number of preambles from the slave to master

13

Unsigned-8

Maximum Number of Device Variables

14–15

Unsigned-16

Configuration Change Counter

16

Bits

Extended Field Device Status

17–18

Enum

Manufacturer ID Code: 166

DEC

/00A6

HEX

(FCI)

19–20

Enum

Private Label Distributor Code

21

Enum

Device Profile = 1 “HART Process Automation Device”

Response Codes

See Table 16, page 67, for response code list.

Command 12: Read Message Contained Within Device

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–23

Bitstring

24-character message string

Response Codes

See Table 16, page 67, for response code list.

Command 13: Read Tag, Descriptor, Date

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–5

Packed

Tag 6–17

Packed

Descriptor

18–20

Date

Date Code: Day, Month, Year (YR = setting year minus 1900)

Response Codes

See Table 16, page 67, for response code list.

Command 14: Read Primary Variable (Flow) Transducer Information

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–2

Unsigned-24

Transducer Serial Number

3 Enum

Transducer Units Code

4–7

Float

Upper Transducer Limit

8–11

Float

Lower Transducer Limit

12–15

Float

Minimum Span

Response Codes

See Table 16, page 67, for response code list.

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OPERATION ST80/ST80L Fl o w Meter

Command 15: Read Device Information

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Enum

Flow Alarm Selection Code

1 Enum

Flow Transfer Function Code (not supported)

2 Enum

Flow Upper and Lower Range Value Units Code

3–6

Float

Flow Upper Range Value

7–10

Float

Flow Lower Range Value

11–14

Float

Flow Damping Value

15

Enum

Write Protect Code

16

Enum

Reserved

17

Bits

Flow Analog Channel Flags (not supported)

Response Codes

See Table 16, page 67, for response code list.

Command 16: Read Final Assembly Number

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–2

Unsigned-24

STAK ELECT ASSY #

Response Codes

See Table 16, page 67, for response code list.

Command 17: Write Message Into Device

Byte

Format

Description

Request Data Bytes

0–23

Packed

Message String Used by Master

Response Data Bytes1

0–23

Packed

Message String

Response Codes

See Table 16, page 67, for response code list.

Command 18: Write Tag, Descriptor, Date

Byte

Format

Description

Request Data Bytes

0–5

Packed

Tag

6–17

Packed

Descriptor Used by Master

18–20

Date

Date Code Used by Master

Response Data Bytes1

0–5

Packed

Tag 6–17

Packed

Descriptor

18–20

Date

Date Code: Day, Month, Year (YR = setting year minus 1900)

Response Codes

See Table 16, page 67, for response code list.

Command 19: Write Final Assembly Number

Byte

Format

Description

Request Data Bytes

0–2

Unsigned-24

STAK ELECT ASSY #

Response Data Bytes1

0–2

Unsigned-24

STAK ELECT ASSY #

Response Codes

See Table 16, page 67, for response code list.

Note: 1. The value returned in the response data bytes reflects the value actually used by the field device.

Note: 1. The value returned in the response data bytes reflects the value actually used by the field device.

Note: 1. The value returned in the response data bytes reflects the value actually used by the field device.

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ST80/ST80L Flow Meter OPERATION

Command 20: Read Long Tag

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0–31

Latin-1

Long Tag

Response Codes

See Table 16, page 67, for response code list.

Command 21: Read Unique Identifier Associated with Long Tag

Byte

Format

Description

Request Data Bytes

0–31

Latin-1

Long Tag

Response Data Bytes

0

Unsigned-8

254

1–2

Enum

Expanded Device Type

3 Unsigned-8

Minimum Number Of Preambles From Master to Slave

4 Unsigned-8

HART Protocol Revision Number: 7

5 Unsigned-8

Device Revision Number

6 Unsigned-8

Software Revision Number

7 Unsigned-5

(Most Significant 5 Bits) Hardware Revision Level: 1

7 Enum

Physical Signaling Code: 00 = Bell 202 Current (4-20 mA)

8 Bits

Flags: (Unused)

9–11

Unsigned-24

Device ID

12

Unsigned-8

Minimum Number Of Preambles From Slave to Master

13

Unsigned-8

Maximum Number of Device Variables

14–15

Unsigned-16

Configuration Change Counter

16

Bits

Extended Field Device Status

17–18

Enum

Manufacturer ID Code: 166

DEC

/00A6

HEX

(FCI)

19–20

Enum

Private Label Distributor Code

21

Enum

Device Profile = 1 “HART Process Automation Device”

Response Codes

See Table 16, page 67, for response code list.

Command 22: Write Long Tag

Byte

Format

Description

Request Data Bytes

0–31

Latin-1

Long Tag

Response Data Bytes

0–31

Latin-1

Long Tag

Response Codes

See Table 16, page 67, for response code list.

Command 38: Reset Configuration Changed Flag

Byte

Format

Description

Request Data Bytes

0–1

Unsigned-16

Configuration Change Counter

Response Data Bytes

0–1

Unsigned-16

Configuration Change Counter

Response Codes

See Table 16, page 67, for response code list.

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OPERATION ST80/ST80L Fl o w Meter

Command 48: Read Additional Device Status

Byte

Format

Description

Request Data Bytes

0–5

Bits

Device-Specific Status (only first 6 bytes used, see page 68 for
additional info)

6 Bits

Extended Device Status. Normally “0”; set to “1” (0x01) if
maintenance is required.

7 Bits

Device Operating Mode (not used, bit cleared to 0)

8 Bits

Standardized Status 0 (not used, bit cleared to 0)

9 Bits

Standardized Status 1 (not used, bit cleared to 0)

10

Bits

Analog Channel Saturated (not used, bit cleared to 0)

11

Bits

Standardized Status 2 (not used, bit cleared to 0)

12

Bits

Standardized Status 3 (not used, bit cleared to 0)

13

Bits

Analog Channel Fixed

14–24

Bits

Device-Specific Status2 (not used, bit cleared to 0)

Response Data Bytes

0–5

Bits

Device-Specific Status (only first 6 bytes used, see page 68)

6 Bits

Extended Device Status. Normally “0”; set to “1” (0x01) if
maintenance is required.

7 Bits

Device Operating Mode (not used, bit cleared to 0)

8 Bits

Standardized Status 0 (not used, bit cleared to 0)

9 Bits

Standardized Status 1 (not used, bit cleared to 0)

10

Bits

Analog Channel Saturated (not used, bit cleared to 0)

11

Bits

Standardized Status 2 (not used, bit cleared to 0)

12

Bits

Standardized Status 3 (not used, bit cleared to 0)

13

Bits

Analog Channel Fixed

14–24

Bits

Device-Specific Status2 (not used, bit cleared to 0)

Response Codes

See Table 16, page 67, for response code list.

58 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Command 35: Write Primary Variable (PV) Range Values

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

PV Upper and Lower Range Values Units Code

1–4

Float

PV Upper Range Value (Customer Max. Flow Limit)

5–8

Float

PV Lower Range Value (Customer Min. Flow Limit)

Response Data Bytes1

0

Unsigned-8

PV Upper and Lower Range Values Units Code

1–4

Float

PV Upper Range Value

5–8

Float

PV Lower Range Value

Response Codes

See Table 16, page 67, for response code list.

Command 40: Enter/Exit Fixed Current Mode

Byte

Format

Description

Request Data Bytes1

0–3

Float

PV Fixed Current Level (mA units); “0” to Exit Fixed Current

Response Data Bytes

0–3

Float

Actual PV Current Level

Response Codes

See Table 16, page 67, for response code list.

Command 42: Perform Device Reset (Soft Reset of Flow Meter)1

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

None

Response Codes

See Table 16, page 67, for response code list.

Command 44: Write Primary Variable Units

Byte

Format

Description

Request Data Bytes

0

Enum

PV Units Code

Response Data Bytes1

0

Enum

PV Units Code

Response Codes

See Table 16, page 67, for response code list.

Command 45: Trim DAC Zero – Measured Current Chan #1 (in mA)

Byte

Format

Description

Request Data Bytes

0–3

Float

Ext. Measured Current Ch. #1 Level (4 mA Zero_DAC)

Response Data Bytes1

0–3

Float

Actual Measured Current Ch. #1 Level (4 mA Zero_DAC)

Response Codes

See Table 16, page 67, for response code list.

ST80/ST80L HART Common Practice Commands

The ST80/ST80L supports Common Practice commands 35, 40, 42, 44, 45, 46, 50 and 51. Table 12 below summarizes the instrument’s
HART Common Practice command set and the data associated with each command.

Table 12 – HART Common Practice Commands

Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the device.

Notes: 1. Specify a value (in mA) to drive Ch. 1 to a particular output value. Specify “0” to exit the fixed current mode.

Note: 1. Send Command 42 (no data) to reset the instrument. No response is returned due to reboot.

Note: 1. The value returned in the response data bytes reflects the value actually used by the device.

Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the device.

Fluid Components International LLC 59

OPERATION ST80/ST80L Fl o w Meter

Command 46: Trim DAC Gain – Measured Current Chan #1 (in mA)

Byte

Format

Description

Request Data Bytes

0–3

Float

Ext. Measured Current Ch. #1 Level (20 mA GainDAC)

Response Data Bytes1

0–3

Float

Actual Measured Current Ch. #1 Level (20 mA GainDAC)

Response Codes

See Table 16, page 67, for response code list.

Command 50: Read Dynamic Variable Assignments

Byte

Format

Description

Request Data Bytes

None

Response Data Bytes

0

Unsigned-8

Device Variable assigned to the primary variable.

1–3 — 250 (Unused)

Response Codes

See Table 16 for response code list.

Command 51: Write Dynamic Variable Assignments

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Device Variable assigned to the primary variable.

Response Data Bytes1

0

Unsigned-8

Device Variable assigned to the primary variable.

1–3 — 250 (Unused)

Response Codes

See Table 16 for response code list.

Note: 1. The value returned in the response data bytes reflects the rounded or truncated value actually used by the device.

Note: 1. The value returned in the response data bytes reflects the value actually used by the device.

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ST80/ST80L Flow Meter OPERATION

Group No.

Description

Command Numbers

Group 1

Commands to set up and configure the instrument.

137, 138, 139, 140, 145, 146,

148, 149, 150, 159

Group 2

Commands to set up 4–20 mA output channels including the OUTZ, and
OUTF parameters.

160, 161, 163, 164, 166, 167

Group 3

Commands to view individual FE process. The view is a snapshot of
sensor data at the time of the request; i.e., it does not update in real time.

170

Group 4

Commands to display the factory-set calibrated limit of the instrument for
flow, process temperature and pressure variables.

151, 154, 157

Group 5

Other Category – Commands outside the above listed groups.

159, 179, 180, 181, 182, 183,

193

Command 137: Read Totalizer And Rollover Values

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–3

Float

Totalizer

Response Codes

See Table 16, page 67, for response code list.

Command 138: Read Totalizer State

Byte

Format

Description

Request Data Bytes

None

— — Response Data Bytes

0

Unsigned-8

Totalizer State: 0 = OFF; 1 = ON

Response Codes

See Table 16, page 67, for response code list.

Command 139: Write Totalizer State

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Totalizer State: 0 = OFF; 1 = ON

Response Data Bytes

0

Unsigned-8

Totalizer State: 0 = OFF; 1 = ON

Response Codes

See Table 16, page 67, for response code list.

Command 140: Read Device Information

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–9

Bits

Device CO

10–19

Bits

Device Serial Number

20–23

Bits

Device Software Version

Response Codes

See Table 16, page 67, for response code list.

ST80/ST80L HART Device Specific Commands

The ST80/ST80L Manufacturer Specific or Device Specific commands start at command 137. Use the device specific commands to setup
and configure the ST80/ST80L instrument via HART. The ST80/ST80L device specific commands are grouped in functional categories as
summarized in Table 13 below.

Table 13 – ST80/ST80L HART Device Specific Command Groupings

184, 185,186, 187, 188, 191.

Table 14 below summarizes the instrument’s HART Device Specific command set and the data associated with each command.

Table 14 – HART Device Specific Commands

Fluid Components International LLC 61

OPERATION ST80/ST80L Fl o w Meter

Command 145: Read Customer Engineering Units

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0

Unsigned-8

Units Code for Flow

1 Unsigned-8

Units Code for Temperature

2 Unsigned-8

Units Code for Totalizer

3 Unsigned-8

Units Code for Pressure

Response Codes

See Table 16, page 67, for response code list.

Command 146: Write Customer Engineering Units

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Units Code for Flow

1 Unsigned-8

Units Code for Temperature

2 Unsigned-8

Units Code for Totalizer (must match Flow units)

3 Unsigned-8

Units Code for Pressure

Response Data Bytes

0

Unsigned-8

Units Code for Flow

1 Unsigned-8

Units Code for Temperature

2 Unsigned-8

Units Code for Totalizer

3 Unsigned-8

Units Code for Pressure

Response Codes

See Table 16, page 67, for response code list.

Command 148: Read Plenum Information (Pipe Size)

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–3

Float

Pipe Height Value

4–7

Float

Pipe Width (Diameter) Value

8 Unsigned-8

Plenum Units Code

Response Codes

See Table 16, page 67, for response code list.

Command 149: Write Plenum Information (Pipe Size)

Byte

Format

Description

Request Data Bytes

0–3

Float

Pipe Height Value

4–7

Float

Pipe Width (Diameter) Value

8 Unsigned-8

Plenum Units Code

Response Data Bytes

0-3

Float

Pipe Height Value

4–7

Float

Pipe Width (Diameter) Value

8 Unsigned-8

Plenum Units Code

Response Codes

See Table 16, page 67, for response code list.

Command 150: Write “Write Protect Mode”

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Write Protect Mode: 0x00 = Disable; 0x01 = Enable

Response Data Bytes

0

Unsigned-8

Write Protect Mode: 0x00 = Disable; 0x01 = Enable

Response Codes

See Table 16, page 67, for response code list.

62 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Command 151: Read Calibration Flow Limits

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–3

Float

Flow Lower Limit Value

4–7

Float

Flow Upper Limit Value

Response Codes

See Table 16, page 67, for response code list.

Command 154: Read Calibration Temperature Limits

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–3

Float

Temperature Lower Limit Value

4–7

Float

Temperature Upper Limit Value

Response Codes

See Table 16, page 67, for response code list.

Command 157: Read Calibration Pressure Limits

Byte

Format

Description

Request Data Bytes

None

—

—

Response Data Bytes

0–3

Float

Pressure Lower Limit Value

4–7

Float

Pressure Upper Limit Value

Response Codes

See Table 16, page 67, for response code list.

Command 159: Write Factory Restore

Byte

Format

Description

Request Data Bytes1

None

—

None (no data)

Response Data Bytes

None

—

None (returns nothing)

Response Codes

See Table 16, page 67, for response code list.

Command 160: Write (4-20 mA) Output Channel #1 Parameters

Byte

Format

Description

Request Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ1)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF1)

4 Unsigned-8

Channel #1 Out Variable

Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ1)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF1)

4 Unsigned-8

Channel #1 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Command 161: Read (4-20 mA) Output Channel #1 Parameters

Byte

Format

Description

Request Data Bytes

None

— — Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ1)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF1)

4 Unsigned-8

Channel #1 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Note: 1. Send Command 159 with no data to reload the instrument’s factory default programming.

Fluid Components International LLC 63

OPERATION ST80/ST80L Fl o w Meter

Command 163: Write (4-20 mA) Output Channel #2 Parameters

Byte

Format

Description

Request Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ2)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF2)

4 Unsigned-8

Channel #2 Out Variable

Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ2)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF2)

4 Unsigned-8

Channel #2 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Command 164: Read (4-20 mA) Output Channel #2 Parameters

Byte

Format

Description

Request Data Bytes

None

— — Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ2)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF2)

4 Unsigned-8

Channel #2 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Command 166: Write (4-20 mA) Output Channel #3 Parameters

Byte

Format

Description

Request Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ3)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF3)

4 Unsigned-8

Channel #3 Out Variable

Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ3)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF3)

4 Unsigned-8

Channel #3 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Command 167: Read (4-20 mA) Output Channel #3 Parameters

Byte

Format

Description

Request Data Bytes

None

— — Response Data Bytes

0–1

Unsigned-16

D/A Setting for 4 mA Out (OUTZ3)

2–3

Unsigned-16

D/A Setting for 4 mA Out (OUTF3)

4 Unsigned-8

Channel #3 Out Variable

Response Codes

See Table 16, page 67, for response code list.

Command 170: Read Bank #1 Sensor Variables

Byte

Format

Description

Request Data Bytes

None

— — Response Data Bytes

0–3

Float

Flow Value Sensor #1

4–7

Float

Temperature Value Sensor #1

8–11

Float

Pressure Value Sensor #1

12–15

Float

Flow Value Sensor #2

16–19

Float

Temperature Value Sensor #2

20–23

Float

Pressure Value Sensor #2

24–27

Float

Flow Value Sensor #3

28–31

Float

Temperature Value Sensor #3

32–35

Float

Pressure Value Sensor #3

36–39

Float

Flow Value Sensor #4

40–43

Float

Temperature Value Sensor #4

44–47

Float

Pressure Value Sensor #4

Response Codes

See Table 16, page 67, for response code list.

64 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Command 179: Write/Set Calibration Group

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Write/Set Calibration Group

Response Data Bytes

0

Unsigned-8

Write/Set Calibration Group

Response Codes

See Table 16, page 67, for response code list.

Command 180: Read Calibration Group

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Read Calibration Group

Response Data Bytes

0

Unsigned-8

Read Calibration Group

Response Codes

See Table 16, page 67, for response code list.

Command 181: Write KFactor1

Byte

Format

Description

Request Data Bytes

0–3

Float

Write KFactor1

Response Data Bytes

0–3

Float

Write KFactor1

Response Codes

See Table 16, page 67, for response code list.

Command 182: Write KFactor2

Byte

Format

Description

Request Data Bytes

0–3

Float

Write KFactor2

Response Data Bytes

0–3

Float

Write KFactor2

Response Codes

See Table 16, page 67, for response code list.

Command 183: Write KFactor3

Byte

Format

Description

Request Data Bytes

0–3

Float

Write KFactor3

Response Data Bytes

0–3

Float

Write KFactor3

Response Codes

See Table 16, page 67, for response code list.

Command 184: Write KFactor4

Byte

Format

Description

Request Data Bytes

0–3

Float

Write KFactor4

Response Data Bytes

0–3

Float

Write KFactor4

Response Codes

See Table 16, page 67, for response code list.

Command 185: Read KFactor1

Byte

Format

Description

Request Data Bytes

0–3

Float

Read KFactor1

Response Data Bytes

0–3

Float

Read KFactor1

Response Codes

See Table 16, page 67, for response code list.

Command 186: Read KFactor2

Byte

Format

Description

Request Data Bytes

0–3

Float

Read KFactor2

Response Data Bytes

0–3

Float

Read KFactor2

Response Codes

See Table 16, page 67, for response code list.

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OPERATION ST80/ST80L Fl o w Meter

Command 187: Read KFactor3

Byte

Format

Description

Request Data Bytes

0–3

Float

Read KFactor3

Response Data Bytes

0–3

Float

Read KFactor3

Response Codes

See Table 16, page 67, for response code list.

Command 188: Read KFactor4

Byte

Format

Description

Request Data Bytes

0–3

Float

Read KFactor4

Response Data Bytes

0–3

Float

Read KFactor4

Response Codes

See Table 16, page 67, for response code list.

Command 191: Totalizer Reset

Byte

Format

Description

Request Data Bytes

0

Unsigned-8

Reset Key = 0x00

Response Data Bytes

0

Unsigned-8

Reset Key = 0x00

Response Codes

See Table 16, page 67, for response code list.

Command 193: Read Process Variable and Time Stamp

Byte

Format

Description

Request Data Bytes

0–13

Float

Read PV value, status, PV units, PV classification code, date
code, and timestamp.

Response Data Bytes

0–13

Float

Read PV value, status, PV units, PV classification code, date
code, and timestamp.

Response Codes

See Table 16, page 67, for response code list.

HART Command Bit Assignments

Command Status Bytes

The HART command response data field includes a status message in the first two bytes. The first byte (0) is the Comm Error/Response code.
The second byte (1) is the Device status. Byte 0 indicates either a communication error or a command-specific response code if no
communication error exists. Note that within the first byte, bit b7 is either set or cleared to indicate that the byte indicates a comm error or a
command-specific response code, respectively. Table 15 summarizes the command status bytes. Table 16 summarizes the command-specific
response codes.

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ST80/ST80L Flow Meter OPERATION

Error/Status Description

Communication Error

Response Code (No Comm Error)

0 Reserved – Bit cleared to zero.

Buffer Overflow – The message was too long for the

received buffer of the device.

2 Reserved – Bit cleared to zero.

Longitudinal Parity Er ror – The longitudinal parity
the end of the message.

Framing Error – The stop bit of one or more bytes received

Overrun Error – At least one byte of data in the receive
Vertical Parity Error – The parity of one or more of the bytes

received by the device was not odd

7 1: Set bit means byte re presen ts communi cati ons erro r.

0: Cleared bit means byte represents response code.

0 Primary Variable Out of Limits – The PV is beyond its operating limit.

1 Non-Primary Variable Out of Limits – A device variable not mapped to the PV is beyond its operating limits.

Loop Current Saturated – The loop current has reached its upper (or lower) endpoint limit and cannot increase (or

Byte 1

3

Loop Current Fixed – The loop current is being held at a fixed value and is not responding to process variations.

Device

Status

More Status Available – More status information is available. Refer to Command 48, Additional Device Status

Bytes, page 68.

5 Cold Start – A power failure or device reset has occurred.

6 Configuration Changed – An operation was performed that changed the device’s configuration.

7 Device Malfunction – The device detected a serious error or failure that compromises device operation.

Code

(Class) Description

Code

(Class) Description

00

(Success) No command-specific errors

12

(Error) Upper Range value too low/Invalid mode

02

(Error) Invalid selection/Invalid Poll Address

13

(Error) Upper and Lower Range values out of
limit

03

(Error) Passed parameter too large

14

(Warning) Span too small/Status byte mismatch

04

(Error) Passed parameter too small

16

(Mode Error) Access restricted

05

(Error) Too few data bytes received

18

(Error) Invalid units code

06

(Misc Error) Device-specific command error

29

(Error) Invalid Span

07

(Mode Error) In Write-Protect mode

30

(Error) Command response truncated

09

(Error) Invalid date code/Configuration change

32

(Error) Busy

10

(Error) Lower Range value too low

64

(Error) Command not implemented

11

(Error) Upper Range value too high/Loop
current not active (device in multidrop mode)

—

—

Table 15 – Command Status Bytes, Bit Assignments

Byte Bit

1

3

Byte 0 4

5

6

calculated by the device did not match the check byte at

by the device was not detected by the UART (i.e., a mark or 1
was not detected when a stop bit should have occurred).

buffer of the UART was overwritten before it was read (i.e.
the slave did not process incoming byte fast enough).

2

decease) any further.

4

Command-Specific Response Code (0-127)

See Table 16 below.

Table 16 – Command-Specific Response Codes

counter mismatch/Lower range value too
high/Incorrect loop current mode or value

Fluid Components International LLC 67

OPERATION ST80/ST80L Fl o w Meter

Byte

Bit

Error/Status Description

Class

Device Status Bits Set

0 Serious Device Error

Hardware

4

1 Electronics Hardware Failure

Hardware

4

2 Memory Error

Hardware

4

Byte 0

3

Measurement Failure

Hardware

4, 7

4 Maintenance Required

Hardware

4

5 FRAM Failure

Hardware

4

6 Power Supply Failure

Hardware

4

7 Configuration Invalid

Hardware

4

0 Device Initialization Failed

Hardware

4

1 Device Not Initialized

Hardware

4

2 Electronic Temperature Too High

Hardware

4

Byte 1

3

Flow Sensor Failure

Hardware

4, 7

4 Flow Sensor Not Connected

Hardware

4,7

5 Sensor Communication Failure

Hardware

4

6 Totalizer Overflow

Hardware

4

7 Flow Is Out Of Range

Hardware

4

0 Ethernet Communication Failure

Hardware

4

1 USB Communications Failure

Hardware

4

2 Industrial Communication Protocol Fail

Hardware

4

Byte 2

3

Process Temperature Over Max Limit

Hardware

4

4 Process Temperature Under Min Limit

Hardware

4

5 Flow Sensor Heater Shorted

Hardware

4

6 Not Used — —

7 Flow Sensor Heater Open

Hardware

4

0 Not Used — —

1 Not Used — —

2 Flow Sensor A/D Counts Under Min Limit

Hardware

4

Byte 3

3

Flow Sensor Delta-R Below Min Limit

Hardware

4

4 FE Flow Above Limit

Hardware

4

5 FE Process Temperature Over Min Limit

Hardware

4

6 FE Process Temperature Under Max Limit

Hardware

4

7 Component Error – TMP100

Hardware

4

0 Component Error – LTC2654

Hardware

4

Component Error – CORE 4-20 mA Input
ADS1100 (non-fatal)

2 Not Used — —

Byte 4

3

I2C0 Failure

Hardware

4

4 Component Error – Heater Monitor A/D

Hardware

4

5 Component Error – 16-Bit I/O Expander

Hardware

4

6 Component Error – Delta-R A/D Failure

Hardware

4

7 Component Error – Reference-R A/D Failure

Hardware

4

0 Component Error -- FE FRAM

Hardware

4

1 Component Error -- Active Excitation IC

Hardware

4

2 Component Error -- Reference Excitation IC

Hardware

4

STACK in Self Check Mode No Process Data
Available

4 Not Used — —

5 Not Used — —

6 Not Used — —

FE in Internal Delta-R Check – process data not
reliable (non-fatal)

Command 48, Additional Device Status Bytes

Table 17 below summarizes the Command 48 Additional Device Status bytes. This is a 6-byte field. The remaining status bytes are

reserved for future use. A status bit is cleared (0) for no error. A status bit is set (1) when an error (or condition) is detected.

Table 17 – Command 48, Additional Device Status Bytes Bit Assignments

1

Byte 5 3

7

68 Fluid Components International LLC

Hardware 4

— —

— —

ST80/ST80L Flow Meter OPERATION

HART Code

Unit Description

HART Code

Unit Description

32

degrees Celsius

33

degrees Fahrenheit

HART Code

Unit Description

HART Code

Unit Description

186

Standard Cubic Feet per Second (SCFS)

188

Standard Cub ic M eter pe r H our (S CMH )

123

Standard Cubic Feet per Minute (SCFM)

187

Standard Cubic Meter per Day (SCMD)

185

Standard Cubic Feet per Hour (SCFH)

176

Normal Liter per Second (NLPS)

184

Standard Cubic Feet per Day (SCFD)

175

Normal Liter per Minute (NLPM)

183

Normal Cubic Meters per Second (NCMS)

122

Normal Liter per Hour (NLPH)

182

Normal Cubic Meters per Minute (NCMM)

174

Normal Liter per Day (NLPD)

121

Normal Cub ic Me ters per Hour (NCMH)

180

Standard Liter per Second (SLPS)

181

Normal Cubic Meters per Day (NCMD)

179

Standard Liter per Minute (SLPM)

190

Standard Cub ic M et er p er Sec on d ( SCM S)

178

Standard Liter per Hour (SLPH)

189

Standard Cubic Meter per Minute (SCMM)

177

Standard Liter per Day (SLPD)

HART Code

Unit Description

HART Code

Unit Description

80

Pounds per Second (LBPS)

75

Kilograms per Hour (KGPH)

81

Pounds per Minute (LBPM)

76

Kilograms per Day (KGPD)

82

Pounds per Hour (LBPH)

246

Metric Tonnes Per Second (TNPS)

83

Pounds per Day (LBPD)

77

Metric Tonnes Per Minute (TNPM)

73

Kilograms per Second (KGPS)

78

Metric Tonnes Per Hour (TNPH)

74

Kilograms per Minute (KGPM)

79

Metric Tonnes Per Day (TNPD)

HART Code

Unit Description

HART Code

Unit Description

20

Standard Feet per Second (SFPS)

21

Normal Meters per Second (NMPS)

116

Standard Feet per Minute (SFPM)

242

Normal Meters per Minute (NMPM)

240

Standard Feet per Hour (SFPH)

120

Normal Meters per Hour (NMPH)

241

Standard Feet per Day (SFPD)

243

Normal Meters per Day (NMPD)

HART Code

Unit Description

HART Code

Unit Description

43

Standard Cubic Meter (SCM)

168

Standard Cubic Feet (SCF)

63

Pound (LB)

166

Normal Cubic Meter (NCM)

61

Kilogram (KG)

41

Standard Liter (SL)

62

Metric Tonnes (TN)

167

Normal Liter (NL)

HART Code

Unit Description

HART Code

Unit Description

47

inches

49

millimeters

HART Code

Unit Description

HART Code

Unit Description

175

PSIA

12

kPa A

06

PSIG

248

kPa G

01

in H2O (@60 °F)

170

cm H2O (g)

07

bar A

13

torr A

247

bar G — —

HART Engineering Units Codes

Table 18 below summarizes the HART codes used to represent the instrument’s engineering units.

Table 18 – HART Engineering Units Codes

Temperature

Volumetric Flow

Mass Flow

Velocity Flow

Totalizer

Plenum

Pressure (ST100A Series only)

Fluid Components International LLC 69

OPERATION ST80/ST80L Fl o w Meter

Modbus Operation

The ST80/ST80L offers Modbus as one of its digital communication protocol, but unlike the other digital communication protocols Modbus
only offers set up and configuration for the totalizer variable. Refer to Modbus Connections on page 27 for Modbus wiring info.

The ST80/ST80L Modbus physical layer uses the flow meter’s asynchronous RS-485 serial port. There is no high speed Modbus over
Ethernet. The ST80/ST80L offers the two basic traditional transmission serial interface modes: RTU and ASCII message coding.

The ST80/ST80L offers the process variable parameters (value) in floating point form, which are organized as single or double precision
floating point registers. These registers are the 4000 and the 5000 group registers, both of which are accessed using Modbus 03 and 04
function codes. Refer to Table 20, page 72, for an overview of the registers.

Setting the ST80/ST80L for Modbus Operation

The ST80/ST80L Configuration Software application is used to select the instrument’s digital communication protocol.
Using the supplied USB cable, connect the instrument’s USB port to a USB port on the PC running the configurator software.
Launch the ST80/ST80L Configurator (with the PC already connected to the instrument). Select Configuration branch from the menu tree

on the window’s left side. Observe that the Output tab is selected. In the window’s Digital Output Selection field, check whether or not
Modbus is shown for Digital Bus. If not, use the Digital Bus pulldown menu to select Modbus. Then click Send to Device to program the
ST80/ST80L (enter “2772” user password).

Figure 50 – ST80/ST80L Configuration Software Output Tab with Modbus Selected

Click the Modbus tab and configure the serial interface parameters (Node ID, Mode, Baud, Data Bits, Parity, and Stop Bits) as required for
your application. Then click Send to Device to program the ST80/ST80L (enter “2772” user password). Refer to the ST80/ST80L
Configuration Software manual 06EN003491 for details on configuring the digital bus and using the software.

70 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Function Code

Description

Register Group

Read Holding Registers:

• Totalizer Enable/Disable Status register

Read Input Registers:

• Flow unit, Temperature unit, Totalizer unit, Pressure unit

Write Single Register:

• Disable Totalizer

Figure 51 – ST80/ST80L Configuration Software Modbus Tab, Serial Interface Configuration

ST80/ST80L Modbus Commands

With the Modbus protocol the instrument data is read and written via multiple register access. The following public function numbers are
defined for communication with the ST80/ST80L: 03 and 04.

Table 19 – ST80/ST80L Modbus Function Codes

03

04

06

See Table 22 (page 75), Table 23 (page 76), and Table 24 (page 76) for Modbus engineering unit codes, exception codes, and register
information, respectively.

ST80/ST80L Process Data Registers

Two data type registers are set up in the ST80/ST80L to access the process data. One uses integer data registers (4000) and the other
uses the Daniel extension data registers (5000).

• Flow, Temperature, Totalizer, Pressure

• Flow unit, Temperature unit, Totalizer unit, Pressure unit

• Flow, Temperature, Totalizer, Pressure

• Reset Totalizer counter

• Enable Totalizer

4xxxx

3xxxx

4xxxx

All designated registers must be read for each variable value to extract the floating-point number. Conversion must be started manually
with the 4000 registers. The Daniel extension handles the read and conversion automatically. To use the Daniel extension the master must
support the Daniel extension function.

Totalizer Description

The ST80/ST80L through the Modbus channel offers the flow Totalizer value through three different register groups organized into two
forms of floating point data types. Registers 5103 and 5104, offer the flow Totalizer as a double precision floating point value in the
Modbus Daniel extension protocol. Registers 4105, 4106, 4107, and 4108 offer the flow Totalizer as a double precision floating point value

Fluid Components International LLC 71

OPERATION ST80/ST80L Fl o w Meter

Variable/Parameter

Modbus Slave Reg ist er

Data Type

Access

Flow (Value)

5101

Float

Read

Temp (Value)

5102

Float

Read

Totalizer (Value) MS

5103

Float (D)1

Read

Totalizer (Value) LS

5104

Float (D)1

Read

Pressure (Value)

5105

Float

Read

Variable/Parameter

Modbus Slave Reg ist er

Data Type2

Access

Flow MS (Value)

4101

Special1

Read

Flow LS (Value)

4102

Special1

Read

Temperature MS (Value)

4103

Special1

Read

Temperature LS (Value)

4104

Special1

Read

Totalizer MS (Value)

4105

Special2 (D)1

Read

Totalizer MS2 (Value)

4106

Special2 (D)1

Read

Totalizer LS2 (Value)

4107

Special2 (D)1

Read

Totalizer LS (Value)

4108

Special2 (D)1

Read

Pressure MS ( Value)

4109

Special1

Read

Pressure LS (Value)

4110

Special1

Read

Variable/Parameter

Modbus Slave Reg ist er

Data Type

Access

Totalizer 1 MS (Value)

4111

Float

Read

Totalizer 1 LS (Value)

4112

Float

Read

Totalizer 2 MS (Value)

4113

Float

Read

Totalizer 2 LS (Value)

4114

Float

Read

Variable/Parameter

Modbus Slave Reg ist er

Data Type

Access

Flow Eng. Uni ts Code

4020

Integer

Read

Temp Eng. Unit s Code

4021

Integer

Read

Totalizer Eng. Units Co de

4022

Integer

Read

Pressure En g Units Code

4023

Integer

Read

Variable/Parameter

Modbus Slave Reg ist er

Data Type

Access

Device (Sensor 1) Status Code #1

4025

Integer

Read

Device (Sensor 1) Status Code #2

4026

Integer

Read

in the Modbus standard integer register form. And lastly registers 4111, 4112, 4113, and 4114 offer the flow totalizer as a single precision
floating point value in the Modbus standard register form. Because the Totalizer values can become a very large number, the single
precision floating point presents the data as two register groups. Group 1 called TOTALIZER 1 holds the lower count with a defaulted
count limit of 65,535.996. TOTALIZER 1 resets back to zero when the count limit is reached. Group 2 called TOTALIZER 2 holds the upper
count and it increments by 1 every time the group 1 registers reach the 65,535.996 count or the set “Totalizer Max Limit” count.
TOTALIZER 2 has a maximum count of 4,294,967,295, after which it resets back to zero.

The TOTALIZER 1 group maximum count value can be set to a lower value of the default value by the user. This is controlled by service
registers 4115 and 4116 for which values above 65,535.996 are not permitted. The default value of 65,535.996 for TOTALIZER 1 provides
a resolution 0.01 to the ST80/ST80L Totalizer value.

To reconstruct the double precision floating point value of the Totalizer using the single precision floating point registers do the following:

 ()=  2 

 × 

 1 

  + 

 1 



Table 20 – ST80/ST80L Modbus Process Data

Process Variable Values – Daniel Extension

Process Variable Values – Integral Registers

Totalizer Value – Single Precision Floating Point (16 Bits)

Process Variables – Engineering Unit Codes

Instrument Status Codes

Notes: 1. (D) indicates double precision (64 bits).

2. Data Type: Special1 is a collection of discrete registers that contain a single precision (32-bit) floating point value,
and must be treated and interpreted as a single precision floating point number by the DCS or the PLC. Special2 is
a collection of discrete registers that contain a double precision (64-bit) floating point value, and must be treated and
interpreted as a double precision floating point number by the DCS or the PLC.

72 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Modbus Slave

Register

Totalizer Reset

To reset the totalizer write 0xABCD

Totalizer Start/Stop

To stop the totalizer write 0x00

Totalizer 1 Max MS

4115

Float

Read/Write (Function 03)

Totalizer 1 Max LS

4116

Float

Read/Write (Function 03)

Note:

ST80/ST80L Modbus Service Registers
The ST80/ST80L Modbus supports service registers Totalizer Reset and Totalizer Start/Stop.

● Reset Command for Totalizer – Use the Function 03 holding command via 4117 integer register to manually reset the ST80/ST80L
totalizer count. This is a write only command. If another master has control on write, the function returns a “write protected” error
message.

● Start/Stop Command for Totalizer – Use the Function 03 holding command via 4118 integer register to manually start or stop the totalizer
count. This is a read/write command. If another master has control on write, the function returns a “write protected” error message.

Table 21 – Modbus Service Data -- Service and Setup Functions

Variable/Parameter

To start the totalizer write 0x01

Examples of Totalizer Service Register Access using ModScan32

ModScan32 is a Windows-based utility by WinTECH Software that lets a PC operate as a Modbus master device for testing Modbus
systems. Connect the instrument’s Modbus terminals to one of the host PC’s COM/USB port (a USB connection will require a USB to RS­485 Serial Adapter).

Modbus protocol addresses are zero-based, which means the public address values will be offset by “1” relative to
the protocol address value.

Checking the Totalizer 1 (Lower Count) Value

1. To read the totalizer value, launch ModScan32 and set the data
definition (Registers 4111 and 4112) in the Display Definition dialog box
as shown in the figure below. (Pull down Data Definition from Setup
menu or click the Data Definition icon in the toolbar). (Set Length value
to “2” to include the 2

nd

subsequent register, 4112.) Click OK when done.

Data Type Access

4117 Integer Write Only (Function 03)

4118 Integer

Read/Write (Function 03)

Read (Function 04)

2. Once data is defined, select Connect from the Connection pull-down
menu, which displays the Connection Details dialog shown below. Set
the serial parameters and protocol (click Protocol Selections) as
required for your application.

Fluid Components International LLC 73

3. After entering the appropriate connection details and clicking OK, the
ModScan32 master then attaches itself to the Modbus device
(ST80/ST80L) as shown in the figure below. The register value displays
in the bottom, gray part of the window.

OPERATION ST80/ST80L Fl o w Meter

Checking the Totalizer 2 (Upper Count/Rollover Count) Value

● Referring to Checking the Totalizer 1 (Lower Count) Value above,
repeat step 1, but specify register #4113 instead (Length = 2).

● Repeat step 2 above (skip if already configured).

● See the figure below for a “Rollover count” number example.

Checking/Setting the Totalizer Max. Value

● Referring to Checking the Totalizer 1 (Lower Count) Value above,
repeat step 1, but specify register #4115 instead (Length = 2).

● Repeat step 2 above (skip if already configured).

● See the figure below for a “Ceiling value” number example.

Starting/Stopping the Totalizer Count

● Referring to Checking the Totalizer 1 (Lower Count) Value above,
repeat step 1, but specify regist e r #4118 instead (Length = 1).

● Repeat step 2 above (skip if already configured).

● Double click on the register number (see pointer in the figure below).

A pop-up Write Register dialog displays. Enter the defined value (1 =
start or 0 = stop) in the window’s value field, and then click Update.

Resetting the Totalizer Count

● Referring to Checking the Totalizer 1 (Lower Count) Value above,
repeat step 1, but specify register #4117 instead (Length = 1).

● Repeat step 2 above (skip if already configured).

● Double click on the register number (see pointer in the figure below).

A pop-up Write Register dialog displays. Enter the defined hex value,
0xABCD, in the window’s value field, and then click Update.

74 Fluid Components International LLC

ST80/ST80L Flow Meter OPERATION

Modbus Code

Unit Description

Modbus Code

Unit Description

66

degrees Celsius

71

degrees Fahrenheit

Modbus Code

Unit Description

Modbus Code

Unit Description

90

Standard Cubic Feet per Second (SCFS)

188

Standard Cub ic M eter pe r H our (S CMH )

67

Standard Cubic Feet per Minute (SCFM)

187

Standard Cubic Meter per Day (SCMD)

72

Standard Cubic Feet per Hour (SCFH)

68

Normal Liter per Second (NLPS)

91

Standard Cubic Feet per Day (SCFD)

96

Normal Liter per Minute (NL PM)

94

Normal Cubic Meters per Second (NCMS)

97

Normal Liter per Hour (NLPH)

79

Normal Cubic Meters per Minute (NCMM)

98

Normal Liter per Day (NLPD)

78

Normal Cub ic Me ters per Hour (NCMH)

180

Standard Liter per Second (SLPS)

95

Normal Cubic Meters per Day (NCMD)

179

Standard Liter per Minute (SLPM)

190

Standard Cub ic M et er p er Sec on d ( SCM S)

178

Standard Liter per Hour (SLPH)

189

Standard Cubic Meter per Minute (SCMM)

177

Standard Liter per Day (SLPD)

Modbus Code

Unit Description

Modbus Code

Unit Description

80

Pounds per Second (LBPS)

75

Kilograms per Hour (KGPH)

65

Pounds per Minute (LBPM)

93

Kilograms per Day (KGPD)

76

Pounds per Hour (LBPH)

246

Metric Tonnes Per Second (MT/S)

92

Pounds per Day (LBPD)

77

Metric Tonnes Per Minute (MT/M)

73

Kilograms per Second (KGPS)

78

Metric Tonnes Per Hour (MT/H)

74

Kilograms per Minute (KGPM)

79

Metric Tonnes Per Day (MT/D)

Modbus Code

Unit Description

Modbus Code

Unit Description

70

Standard Feet per Second (SFPS)

86

Normal Meters per Second (NMPS)

83

Standard Feet per Minute (SFPM)

87

Normal Meters per Minute (NMPS)

84

Standard Feet per Hour (SF PH)

88

Normal Meters per Hour (NMPH)

85

Standard Feet per Day (SFPD)

89

Normal Meters per Day (NMPD)

Modbus Code

Unit Description

Modbus Code

Unit Description

43

Standard Cubic Meter (SCM)

190

Standard Cubic Feet (SCF)

180

Pound (LB)

194

Normal Cubic Meter (NCM)

173

Kilogram (KG)

41

Standard Liter (SL)

199

Metric Tonnes (TN)

168

Normal Liter (NL)

Modbus Code

Unit Description

Modbus Code

Unit Description

47

inches

49

millimeters

Modbus Code

Unit Description

Modbus Code

Unit Description

01

PSIA

07

kPa A

02

PSIG

08

kPa G

03

in H2O (@60 °F)

09

cm H2O (g)

05

bar A

11

torr A

06

bar G — —

Modbus Engineering Unit Codes Table

Table 22 below summarizes the Modbus codes used to represent the instrument’s engineering units.

Table 22 – ST80/ST80L Modbus Engineering Unit Codes

Temperature

Volumetric Flow

Mass Flow

Velocity Flow

Totalizer

Plenum

Pressure (applicable to ST100A Series only)

Fluid Components International LLC 75

OPERATION ST80/ST80L Fl o w Meter

Code

Exception

Description

02

Illegal Data Address

The Data address received in the query is not an
allowable address for the master/slave

03

Illegal Data Value

A value contained in the query data field is not an
allowable value for master/slave

Modbus

Flow MS (of float32 value)

4100

16 bit integer

Read

Flow LS (of float32 value)

4101

16 bit integer

Read

Temp. MS (of float32 value)

4102

16 bit integer

Read

Temp. LS (of float32 value)

4103

16 bit integer

Read

Totalizer1 MS (of float64 value)

4104

16 bit integer

Read

Totalizer1 LS (of float64 value)

4105

16 bit integer

Read

Totalizer2 MS (of float64 value)

4106

16 bit integer

Read

Totalizer2 LS (of float64 value)

4107

16 bit integer

Read

Pressure MS (of float32 value)

4108

16 bit integer

Read

Pressure LS (of float32 value)

4109

16 bit integer

Read

Totalizer Modulo MS (of float32 value)

4110

16 bit integer

Read

Totalizer Modulo LS (of float32 value)

4111

16 bit integer

Read

Totalizer Rollover MS (of float32 value)

4112

16 bit integer

Read

Totalizer Rollover LS (of float32 value)

4113

16 bit integer

Read

Reset Totalizer (input “ABCD” hex)

4116

16 bit integer

Write

Enable/Disable Totalizer (1 = Enable, 0= Disable)

4117

16 bit integer

Read/Write

Flow Unit

4119

16 bit integer

Read

Temperature Unit

4120

16 bit integer

Read

Totalizer Unit

4121

16 bit integer

Read

Pressure Unit

4122

16 bit integer

Read

Status Code 1

4124

16 bit integer

Read

Status Code 2

4125

16 bit integer

Read

Status Code 3

4126

16 bit integer

Read

Flow value

5101

Float32

Read

Temperature value

5102

Float32

Read

Totalizer MS (of float64 value)

5103

Float32

Read

Totalizer LS (of float64 value)

5104

Float32

Read

Pressure value

5105

Float32

Read

Modbus Exception Codes Table

Table 23 below summarizes the possible Modbus exception codes for the ST80/ST80L.

Table 23 – ST80/ST80L Modbus Exception Codes

Modbus Variables and Registers Map Table

Table 24 below summarizes the Modbus variables and registers for the ST80/ST80L.

Table 24 – ST80/ST80L Modbus Variables and Registers Map

Variables/Parameter

Register

Data Type Access

76 Fluid Components International LLC

ST80/ST80L Flow Meter MAINTENANCE

Warning:

Caution:

The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when

4 MAINTENANCE

To avoid hazards to personnel, ensure that all environmental isolation seals are properly maintained.

handling the flow transmitter. See ESD Precautions, page 16 for details.

Introduction

The flow meter needs very little maintenance. There are no moving parts or mechanical parts subject to wear in the flow meter. The flow
element that is exposed to the process media is all welded stainless steel construction. The flow element is only subject to chemical attack
based on the corrosion relationship between the RTD thermowell material and process media.

General Maintenance

Without detailed knowledge of the environmental parameters of the application surroundings and process media, FCI cannot make specific
recommendations for the periodic inspection, cleaning, or testing procedures. However, some suggested general guidelines for
maintenance steps are offered below. Use operation experience to establish the frequency of each type of maintenance.

Calibration

To ensure compliance with EPA 40 CFR Part 98, Subparts A and HH, FCI recommends checking the calibration of the ST80/ST80L flow
meter every 24 months and recalibrating the instrument if required.

Note that additional regional, state, or company guidelines may recommend more frequent (e.g., annual) verifications or recalibrations or
both. FCI recommends periodic cleaning of probes and enclosures.

Electrical Connections

Periodically inspect the wiring for secure connections to the terminal blocks. Verify that terminal connections are tight and physically sound
with no sign of corrosion.

Remote Enclosures

Verify that the moisture barriers and seals that protect the local and remote enclosures are intact. Make sure no water has intruded.

Electrical Wiring

Periodically inspect the power cable, flow element cable(s) and input/output cables. Check the conductors for corrosion and the cable
insulation for signs of deterioration.

Flow Element Connections

Verify that all seals are performing properly and that there is no leakage of the process media. Check for deterioration of the gaskets and
environmental seals used.

Flow Element Assembly

Periodically remove the flow element for inspection based on historical evidence of debris, foreign matter, or scale build-up. Also the flow
element can be removed at appropriate plant shutdown schedules. Check for corrosion, stress cracking, and build-up of oxides, salts, or
foreign substances. The thermowells must be free of excessive contaminants and be physically intact. Any build-up could cause faulty
readings. Clean the flow element as needed with a soft brush and available solvents (compatible with stainless steel).

Fluid Components International LLC 77

MAINTENANCE ST80/ST80L Flow Meter

Warning:

Make sure system power is OFF before replacing the fuse.

Qty

FCI Assembly P/Ns

Description

Mfgr. P/N

FCI P/N

1

025806-01 (AC-DC Power Supply)

1

025810-01 (DC-DC Power Supply)

Power Fuse Replacement

Input power overload protection is provided by a clip-mounted SMT fuse. Table 25 below summarizes the ST80/ST80L power fuse. Open
the blind lid (refer to instructions in Accessing the I/O Connectors, page 21) to access the power fuse. The fuse is on the opposite side of
the P1 power connector near the edge of the power supply board. See Figure 52 below. Although a plastic shield covers this area of the
board, the fuse remains accessible.

Figure 52 – Fuse Location, Power Supply Board

Checking/Replacing the Fuse

To check the SMT fuse first turn instrument power OFF. Replace a fuse with obvious damage (e.g., burnt, broken). Take a resistance
reading across the fuse (fuse clip ends). See Figure 52 above. Any reading other than a short (i.e., open circuit) indicates a blown fuse.
Replace with the appropriate Schurter UMZ 250 fuse as listed in Table 25 below. Reinstall the blind lid.

Table 25 – Power Fuse Summary

SMT fuse (in clip), Schurter UMZ 250,

2 A, 250 VAC/125 VDC, time-lag

3404.2419.11 026095-02

78 Fluid Components International LLC

ST80/ST80L Flow Meter MAINTENANCE

Qty

FCI Assembly P/Ns

Description

Mfgr. P/N

FCI P/N

3V Lithium battery type CR2450N,

Caution:
Warning:

Lithium Battery Replacement

A 3-volt lithium coin cell battery powers the ST80/ST80L real time clock (RTC). Typical service life of the battery is two years. Replace the
battery every two years with the CR2450N coin cell battery listed in Table 26 below.

Table 26 – Lithium Coin Cell Battery Summary

1 025740-01 (Main Board)

540 mAh, temperature range: -40 °C

CR2450N 022038-01

– +85 °C, Manufacturer: Renata

Use only the recommended industrial spec battery listed above. A consumer grade battery will not fit well in the
holder and is prone to leakage or reduced performance or both when used in an industrial environment.

Disassemble the electronics to access the battery. Figure 53 below gives an exploded view of the instrument. Remove the instrument’s
blind lid (refer to instructions in Accessing the I/O Connectors, page 21) and follow the disassembly instructions below (skip steps 3
through 6 if unit has no display). The number callouts in the figure correspond to the numbered steps below.

Make sure system power is OFF before replacing the battery.

1. Remove all user cabling/wiring from the instrument connectors, and then pull all cable/wiring from the cable/wiring ports.

2. Using a 3 mm hex key, remove 2X M4 socket head cap screws securing electronics/cage assembly to housing, and 1X M4 socket
head cap screw securing ground wire to housing. Remove electronics/card cage assembly from housing.

3. Separate bezel/HMI sensor assembly from the cage by pulling straight out.

4. Remove HMI jumper cable from the pin socket at the top the bezel/HMI sensor assembly (Figure 53).

5. Remove 3X 18-8 drive screws securing the display to the cage. Carefully pull the display assembly away from the cage to expose the
FFC (flat flexible cable) cable.

6. Open the FFC cable connector on the main board: Pull the FFC connector lock tab out and then up (away from the board). Once the
lock tab is opened, pull the FFC cable from the connector. Refer to the FFC connector detail in Figure 53. Carefully set aside the fully
detached display assembly.

7. Remove 2X nylon snap rivets securing electronics assembly to the cage, and then slide electronics assembly out to clear the cage.

8. Pull the lithium coin battery from its holder on the main board.

9. Install replacement battery type CR2450N in the coin cell holder with the positive (+) side facing the main board connectors. Use the
replacement battery listed in Table 26 above.

10. Reassembly is reverse of removal. (Make sure FFC display cable is fully inserted and square in connector before pushing the lock tab
back into closed position.)

Fluid Components International LLC 79

MAINTENANCE ST80/ST80L Flow Meter

Figure 53 – Instrument Disassembly for Lithium Coin Cell Battery (CR2450N) Replacement

80 Fluid Components International LLC

ST80/ST80L Flow Meter TROUBLESHOOTING

Warning:

Caution:

The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when

5 TROUBLESHOOTING

Instrument testing/troubleshooting limited to qualified personnel only. The operator assumes all responsibilities for
safe practices while troubleshooting.

handling the flow transmitter. See ESD Precautions, page 16 for details.

Non-Maintenance Observations

At this point, observe the system setup to verify operation. No disassembly or testing is required at this time.

Check Serial Numbers

Verify that the serial number of the flow element(s) and the flow transmitter are the same. The flow element(s) and the flow transmitter are
a matched set. Neither can work independently of the other nor can they be swapped with similar units from another system.

Check Input Power

Check for intact fuses. Verify that the AC power source is connected and turned on.

Check Instrument Installation

Review the instrument installation information given in the Installation section to verify correct mechanical and electrical installation. Be sure the
connectors are firmly mated, and the wires are firmly attached to the connector. (Be sure the wires are inserted between the metal clamps and n ot
between the clamp and plastic connector enclosure.) Verify correct wiring per wiring diagram in APPENDIX A, page 93.

Check for Moisture

Check for moisture in the enclosures. Moisture on the electronics can cause faulty operation.
If a component of the process media is near its saturation temperature, then the component may condense on the sensing points. Liquid

on the sensing points can cause measurement errors.

Check Application Design Requirements

Application design problems usually occur with first time application instruments, although the design should also be checked on
instruments that have been in operation for some time. If the application design does not match field conditions, errors occur.

1. Review the application design with plant operation personnel and plant engineers.

2. Ensure that plant equipment such as pressure and temperature instruments conform to the actual conditions.

3. Verify operating temperature, operating pressure, line size, and gas medium.

Check the General Process

Check all inputs and outputs to the system. Verify pump ratings and check damper or valves that might be open or closed causing the flow
to be different from that which would be expected.

Fluid Components International LLC 81

TROUBLESHOOTING ST80/ST80L Flo w Meter

Verify Standard vs. Actual Process Conditions

The flow meter measures the mass flow rate. The mass flow rate is the mass of the gas flowing through a pipe per time. Other flow meters,
such as an orifice plate or a pitot tube, measure the volumetric flow rate. The volumetric flow rate is the volume of gas per time. If the
readings displayed do not agree with another instrument, some calculations may be necessary before comparing them. To calculate the
mass flow rate and the volumetric flow rate the pressure and temperature at the point of measurement must be known. Use the following
equation to calculate the mass flow rate (Standard Volumetric Flow rate) for the other instrument.

Equation:

Where:

= Volumetric Flow QS = Standard Volumetric Flow

Q

A

P

= Actual Pressure TA = Actual Temperature

A

P
Pressure in PSIA and Temperature is in degrees Rankine

= Standard Pressure TS = Standard Temperature

S

Example:

General Function Check

Tools Needed

● Digital M ultimeter (DMM)

● ST80/ST80L Configuration Software Application

● USB Cable Type B (male) to Type A (male); passive, straight-through type as supplied with instrument

● Small size flat blade screwdriver (for sensor wiring connection)

Verifying Setup

Connect the flow meter via USB to a computer or laptop running the ST80/ST80L configuration software supplied with the instrument.
Refer to the ST80/ST80L Configuration Software manual 06EN003491 for details.

Confirm the setup of the flow meter by reviewing the setup windows in the configurator. Contact your local representative or FCI for
instructions if a setup discrepancy exists.

Checking NAMUR Fault Indication

If the instrument’s flow output is set up for NAMUR, check the output to see if it is driven to a NAMUR level. Refer to NAMUR Setup, page

41 for NAMUR information. Refer to Table 8 on page 42 for the list of faults that trigger NAMUR.

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Term

Number

TB1-1

(Htr Exc)

TB1-2

(Htr Rtn)

TB1-3

(Act Exc)

TB1-4

(Act Sen)

TB1-5

(Gnd Sen)

TB1-6

(Gnd)

TB1-7

(Ref Exc)

TB1-8

(Ref Sen)

TB1-1

(Htr Exc)

TB1-2

(Htr Rtn)

TB1-3

(Act Exc)

TB1-4

(Act Sen)

TB1-5

TB1-6

(Gnd)

TB1-7

(Ref Exc)

TB1-8

(Ref Sen)

Note:

Term

Number

1

N/A

01

10802

10802

10802

10802 ∞ ∞ 2 01

N/A

10802

10802

10802

10802 ∞ ∞ 3 10802

10802

N/A

21602

01

21602 ∞ ∞ 4 10802

10802

21602

N/A

21602

01 ∞ ∞

5

10802

10802

01

21602

N/A

21602 ∞ ∞

6

10802

10802

21602

01

21602

N/A ∞ ∞

7 ∞ ∞ ∞ ∞ ∞ ∞

N/A

1153

8 ∞ ∞ ∞ ∞ ∞ ∞

1153

N/A

Troubleshooting the Flow Element

Check the Resistance of the Flow Element

Turn flow transmitter power OFF. Remove the TB1 connector plug from the sensor wiring pin socket (pull plug straight out).
Measure the resistance between the terminals of the pulled connector plug and compare with the values shown in Table 27 below.

Table 27 – Flow Element Resistance Measurements (In Ohms) Taken From Remote/Integral Electronics

N/A 1153 ∞ ∞ ∞ ∞ ∞ ∞

1153 N/A ∞ ∞ ∞ ∞ ∞ ∞

∞ ∞ N/A 01 10802 10802 21602 21602
∞ ∞ 01 N/A 10802 10802 21602 21602

(Gnd Sen)

∞ ∞ 10802 10802 N/A 01 10802 10802
∞ ∞ 10802 10802 01 N/A 10802 10802
∞ ∞ 21602 21602 10802 10802 N/A 01
∞ ∞ 21602 21602 10802 10802 01 N/A

Notes: 1. Theoretical zero-ohm table values are influenced by sensor cable length, which typically adds <2 Ω.

2. Resistances are approximate for a sensor temperature of 70 °F (21 °C).

3. Heater resistance range is 108-120 Ω.

There is added resistance to consider when measuring the flow element from the remote transmitter. The cable adds
extra resistance. The added resistance can be found by measuring the ACT SEN wire to the ACT EXC wire (e.g.,
TB1-4 to TB1-3.).

For Remote Units – If the measured values do not match that shown in the above table, unplug the cabling connecting the local enclosure
flow element to the remote transmitter and measure the resistance between the terminals of the flow element assembly terminal strip TS1.
Compare the measured values with the values shown in Table 28 below.

Table 28 – Flow Element Resistance (In Ohms) at the Local Enclosure

1 2 3 4 5 6 7 8

Notes: 1. Theoretical zero-ohm table values are influenced by sensor cable length, which typically adds <2 Ω.

2. Resistances are approximate for a sensor temperature of 70 °F (21 °C).

3. Heater resistance range is 108-120 Ω.

If the instrument has been on for some time, the resistance of the active RTD will be greater than the reference RTD.

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Heater Configuration

Resistance

Voltage

Current

AST™

108-120 Ω

4.32-12.6 V

40-105 mA

Constant Power

108-120 Ω

7.884-9.24 V

75 mA ±2 mA

If the instrument has been off for some time, the resistance of the active RTD will be the same as the reference RTD.
For Remote Units – If the measured resistances correspond to Table 28, but not to Table 27, then the sensor interconnect cable is

probably defective. Replace the cable and recheck resistances. If the resistances are still off, contact Customer Service.
If the measured values do not correspond to Table 27 or Table 28 (for remote units), then the flow element is defective. Contact Customer Service.
Reinstall the sensor plug(s) and reattach the cables when troubleshooting is complete.

Check the Heater

Use the configuration software to check the heater as follows (refer to the ST80/ST80L Configuration Software manual 06EN003491 for
software details):

1. Access the Heater Values tab from the Diagnostics branch of the menu tree. See Figure 54 below.

2. Click Start Data Loop. Note that the button changes color when clicked (light green to light orange).

3. Verify that the displayed values for Heater Resistance, Heater Voltage, and Heater Current mA are within normal parameters.

Click Stop Data Loop when done. See Table 29 below.

Table 29 – Nominal Heater Parameter Ranges

Figure 54 – Example Heater Values Tab (Diagnostics)

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Warning:

Explosion Hazard. Do not disconnect equipment when flammable or combustible atmosphere is present. Operator

Note:

The information in this section applies to both AST™ and Constant Power configured instruments.

System Status LED (D3), State

Description

Slow blink (blink every 2 seconds)

Normal operation.

OFF

No power or power supply issue, or system controller halted (hang).

ON (no blink, continuous)

System controller halted (hang).

Note:

Should any of these checks fail, contact FCI Technical Support for assistance.

C01464-1-1

MAIN BOARD

SYSTEM STATUS LED,

D3

Verification of the Electronics

assumes responsibility for all safety concerns relating to interrupting and reapplying power to their instrumentation.

With instrument power ON remove the instrument’s blind lid (see Accessing the I/O Connectors, page 21). Check the green system status
LED on the main board (see Figure 55 below). The system status LED states are listed in the table below.

Table 30 – System Status LED D3 States

Cycle the power to see if the instrument recovers from a possible system controller hang. Contact FCI Technical Support for assistance if the
system status LED is still not blinking.

Figure 55 – System Status LED, Main Board

After checking the system status LED, verify the electronics with the three checks summarized below (there is no sequence in performing
these checks).

 Transmitter Power Supply Check via configuration software: Factory|Sil Adj tab (see Transmitter Power Supply, below). Make sure

that the displayed power supply voltages are within range.

 Heater Check via configuration software: Diagnostics|Heater Values tab (see Check the Heater, above). Make sure that the heater

resistance, voltage, and current are within range.

 Internal Delta-R Resistor (idR) Check via HMI display or configuration software: Diagnostics/idR Scheduled Tests tab (see Internal

Delta-R Resistor (idR) Check, page 43). After running the idR check, verify that the Low, Mid, and High range values show “Passed.”

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Power Supply Voltage

Acceptable Voltage Range

Digital 5 VDC

+4.75 V to +5.25 V

Analog 24 VDC

+23.75 V to +24.25 V

Transmitter Power Supply

Use the ST80/ST80L configuration software to check the power supply voltages. Refer to ST80/ST80L Configuration Software manual
06EN003491 for details. Select the Factory branch from the menu tree on the window's left side. Select the SIL Adj tab. The screen shows
power supply voltage readings for +24 VDC and +5 VDC. Check that the displayed values are within range as listed in Table 31 below.

Table 31 – Instrument Power Supply Voltages

If the voltage measurements are within the range shown in the table, the power supply is functioning properly.

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Note:

Constant Power Configuration Troubleshooting

Equipment List

● 250 Ω 0.01% resistor

● 2 digital multimeters (DMM)

● Delta R Calibration Data Sheet (serial number specific by instrument and group)

● FES-200 flow element simulator

● FES-200 interface cable for ST80/ST80L (022610-11)

Alternative to FES-200:

● 2 ea. Precision Decade Resistance Box, 0.1% (1 kΩ large step, 0.01 Ω small step)

Delta R Check for Constant Power Configured Units

If the flow meter’s parameters have been changed, calibrations may be inaccurate or factory authorized changes
have been made. Consult a factory service representative.

Each flow meter configured at the factory for Constant Power is provided with a Delta R data sheet that lists the differential resistance
values that correlate to the flow meter’s calibration. Resistance substitution instruments like the FES-200 can be used to check instrument
calibration and verify correct operation of the flow transmitter using the Delta R data sheet.

To verify the transmitter is working properly, the sensor head must be disconnected and precision resistance (Delta R) values from the
FES-200 are substituted. Then by measuring the transmitter output and display it can be determined whether the transmitter is still within
factory specification.

Delta R Check

1. Verify the Delta R data sheet has the same serial number and group number as the flow meter calibration that is being verified.

2. Turn transmitter power OFF.

3. Disconnect a flow element sensor from the ST80/ST80L transmitter (TB1) and connect the FES-200 cable connector in its place. See

Figure 57. Precision decade boxes can be used in place of the FES-200. See Figure 58 for decade box wiring.

4. Connect a DMM to the transmitter 4-20 mA output by either method A or B as shown in Figure 56 below.
a. To read 1 to 5 volts, disconnect both output loop wires and connect a precision 250 Ω resistor across the output terminal. Then

connect the DMM, set to DC volts (V), across the resistor to read its voltage drop.

b. To read 4 to 20 mA current, disconnect the output loop and connect the DMM, set to milliamps (mA), in series with the output

circuit to read the current flow.

Figure 56 – DMM Hookup to Measure 4-20 mA Output

5. Turn transmitter power ON and allow the instrument 10 minutes to stabilize.

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REMOTE ELECTRONICS

FES-200 CABLE

FOR ST80/ST80L

TP1 HEATER

CURRENT

THUMBWHEEL
SWITCHES

FES-200
FLOW ELEMENT
SIMULATOR

Reference Sens

or

H

L

G

Active Sensor

H

L

G

1 HTR EXC #1
2 HTR RTN
3 ACT EXC
4 ACT SEN
5 GND SEN
6 GND/SHIELD
7 REF EXC
8 REF SEN
9 SHIELD

TB1

10 W

C01436-1-1

6. Verify the transmitter is in the calibration group matching the Delta R data sheet.

7. On the FES-200, dial in a Delta R value with the thumbwheel from the column marked Delta R (ohms) on the Delta R data sheet. Compare to
the output value column (VDC Across 250 Ohms or mA Output as applicable) or the Indicated Display column or both. Verify that the meter
reading is within the stated tolerance of the flow transmitter. See examples 1, 2 and 3 at the end of this section, as applicable.

8. Repeat for each point on the Delta R table, except for the step value and zero value.

9. Turn power OFF and disconnect the FES-200 and DMM. Reconnect the sensor element connector.

10. Close the enclosure, making sure none of the wires are strained. Ensure any seals and gaskets are properly installed.

11. Restore power to the meter.

If you are troubleshooting the flow meter and the readings are good, the flow transmitter is good and the problem may involve the flow
element or interconnecting cable. If the readings are off, a flow element calibration may be required or the flow transmitter needs to be set
up. Contact FCI Customer Service.

Figure 57 – Connecting FES-200 to ST80/ST80L Transmitter

Figure 58 – ST80/ST80L Decade Box Wiring

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ST80/ST80L Flow Meter TROUBLESHOOTING

Note:

Since the 1-5 VDC range starts at 1 VDC, account for this offset by subtracting 1 VDC from both the “reading” of

Note:

Since the 4-20 mA range starts at 4 mA, account for this offset by subtracting 4 mA from both the “reading” of 11.98

Note:

Allowable Limits

Example 1 - 4-20 mA output check using 1-5 VDC measurement.

Accuracy: ±(0.75% reading + 0.5% full scale) from GF90 Manual

Example Delta R Table entry:

Delta R (ohms)

VDC Across

250 ohms

mA Output Unit dR

Indicated

Display

71.08 2.995 11.98 71.197 154.8 SCFM

• Measure VDC with FES-200 thumbwheel set to 071.08 = 3.011 VDC measured on DMM.

• Determine allowable VDC limits for the 2.995 VDC table value:

2.995 VDC and the “full scale” of 5 VDC.

• Allowable VDC limits = 0.0075 x (2.995 – 1) + 0.005 x (5 – 1) = ±0.035 VDC

The measured value of 3.011 VDC is within the allowable limits of 2.995 ±0.035 VDC.

Example 2 - 4-20 mA output check (using example 1 sample data)

• Measure m A with FES-200 thumbwheel set to 071.08 = 12.04 mA measured on DMM.

• Determine allowable mA limits for the 11.98 mA table value:

mA and the “full scale” of 20 mA.

• Allowable mA limits = 0.0075 x (11.98 – 4) + 0.005 x (20 – 4) = ±0.139 mA

The measured value of 12.04 mA is within the allowable limits of 11.98 ±0.139 mA.

Example 3 - Indicated Display Check (using information from above examples)

• Record the indicated display value with FES-200 thumbwheel set to 071.08 = 156 SCFM indicated on display.

• Determine allowable limits for the 154.8 SCFM table value:

• Allowab le Indicated flow limits = 0.0075 x 154.8 SCFM + 0.005 x 310 SCFM = ± 2.71 SCFM

The indicated value of 156 SCFM is within the allowable limits of 154.8 ±2.71 SCFM.

Defective Parts

Before returning any equipment to FCI, obtain an RA number for authorization, tracking, and repair/replacement instructions. If a return is
required, remove the defective part, replace with a spare, calibrate, then return defective part to FCI, freight prepaid, for disposition.

Customer Service

1. In the event of problems or inquiries regarding the instrument, contact an authorized FCI field agent for the region or country. Refer to
the FCI website: http://www.fluidcomponents.com/ for a list of field service representatives (which includes phone and email contact
information) and a list of service centers around the world.

2. Before contacting the FCI representative make sure that all the applicable information is near so that a more effective, efficient and
timely response can be provided.

3. Refer to APPENDIX E, page 143 for specific Customer Service policy provisions.

The full scale display value is 310 SCFM in this example.

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1

0x00000004 t o

0x00000100 t o

2-2

PD_NON_OP

At least one FE was non-operational (self-test)

Non-Fatal

0x00040000

2-3

PD_SYSTEM_ERROR

System (Core) error

Non-Fatal

0x00080000

2-5

PD_NO_PD_UPDATE

All FEs reported a fatal error

Fatal

0x00200000

2-6

PD_SD_CARD_ERROR

SD Card error

Non-Fatal

0x00400000

Reference: Error/Status Register Information

Summarized below are various registers that provide the instrument with error/status information. This information is normally presented in
the configuration software’s Fault Log tab. Digital busses (such as HART) can also access this information via a read operation using the
appropriate register address.

Instrument Fault Codes Tables

The basic CORE fault register (4 bytes) provides basic CORE and FE fault indication. Detailed faults are given in the 6-byte detailed
CORE fault register and the 4-byte FE fault register. The latter two registers provide specific error status for a fault indicated by the basic
CORE fault register.

Table 32 – Basic CORE Fault Register (CORE CY Command)

Octet-Bit

0-0

FE_01_FAULT

0-1

FE_02_FAULT

0-2 to 0-7

1-1 to 1-8

2-0

PD_FATAL_FAULT

2-1

2-4

2-7

3-0 to 3-1

3-2

Process Alarm #1

3-3

Process Alarm #2

3-4

Process Alarm #3

3-5

Process Alarm #4

3-6

Process Alarm #5

3-7

Process Alarm #6

Note: 1. Fault Type reflects factory default programming. The Fatal/Non-Fatal designation is programmable via the Configurator

software’s Core Faults tab (Factory branch menu tree – requires entry of appropriate level password).

Fault Name

Fault Description

FE1 is reporti ng a fault or an error
FE2 is reporti ng a fault or an error (ST100A)

FCI Reserve d (Not Used)

FCI Reserve d (Not Used)

At least one FE has a fatal error or fault

FCI Reserve d (Not Used)

FCI Reserve d (Not Used)

FCI Reserve d (Not Used)
FCI Reserve d (Not Used)

Alarm #1 Status (1 = Tripped)

Alarm #2 Status (1 = Tripped)

Alarm #3 Status (1 = Tripped)

Alarm #4 Status (1 = Tripped)

Alarm #5 Status (1 = Tripped)

Alarm #6 Status (1 = Tripped)

Fault Type

Fatal/Non-Fatal 0x00000001
Fatal/Non-Fatal 0x00000002

Fatal

Non-Fatal
Non-Fatal
Non-Fatal
Non-Fatal
Non-Fatal
Non-Fatal

Hex Bit Map

0x00000080

0x00008000
0x00010000
0x00020000

0x00100000

0x00800000

0x01000000 t o

0x02000000
0x04000000
0x08000000
0x10000000
0x20000000
0x40000000
0x80000000

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ST80/ST80L Flow Meter TROUBLESHOOTING

Octet-Bit

Status Description

Fault Type

Hex Bit Map

0-0

Device Error: If any of these errors occurs: I2C error, UART error, Mutex error, watchdog reset

Fatal

0x000000000001

0-1

FCI Reserve d (Not Used)

Non-Fatal

0x000000000002

0-2

FCI Reserve d (Not Used)

Non-Fatal

0x000000000004

0-3

CORE unable to update process data (PD_NO_FE_DATA). Unable to obtain/use data from any Active FEs

Fatal

0x000000000008

0-4

FCI Reserve d (Not Used)

Non-Fatal

0x000000000010

0-5

CORE detects FRAM /SPI error

Fatal

0x000000000020

0-6

CORE reports SD card error. Either initialization (corrupt card) error, or card became full (error while writin g). For ST100A only.

Non-Fatal

0x000000000040

0-7

FCI Reserve d (Not Used)

Non-Fatal

0x000000000080

1-0

FCI Reserve d (Not Used)

Non-Fatal

0x000000000100

1-1

FCI Reserve d (Not Used)

Non-Fatal

0x000000000200

1-2

FCI Reserve d (Not Used)

Non-Fatal

0x000000000400

1-3

FCI Reserve d (Not Used)

Non-Fatal

0x000000000800

1-4

FCI Reserve d (Not Used)

Non-Fatal

0x000000001000

1-5

CORE unable to communicate with one or more FEs (PD_COMM_E RROR)

Fatal

0x000000002000

1-6

FCI Reserve d (Not Used)

Non-Fatal

0x000000004000

1-7

CORE: averaged flow out of range of “Flow Min” or “Flow M ax”

Non-Fatal

0x000000008000

2-0

FCI Reserve d (Not Used)

Non-Fatal

0x000000010000

2-1

FCI Reserve d (Not Used)

Non-Fatal

0x000000020000

2-2

FCI Reserve d (Not Used)

Non-Fatal

0x000000040000

2-3

CORE: avera ged temperature above “Temperature Max”

Fatal

0x000000080000

2-4

CORE: averaged temperature below “Temperature Min”

Fatal

0x000000100000

2-5

FE Heater is shorted or below operating limit.

Fatal

0x000000200000

2-6

FE Heater moni toring ADC fails to respond.

Fatal

0x000000400000

2-7

FE Heater is open or above operating limit.

Fatal

0x000000800000

3-0

The Referenc e-R ADC converter fails to respond.

Fatal

0x000001000000

3-1

FCI Reserve d (Not Used)

Non-Fatal

0x000002000000

3-2

The Referenc e-R ADC’s count number is below the minimum.

Non-Fatal

0x000004000000

3-3

FCI Reserve d (Not Used)

Non-Fatal

0x000008000000

3-4

Process flow is above the maximum limi t.

Non-Fatal

0x000010000000

3-5

FCI Reserve d (Not Used)

Non-Fatal

0x000020000000

3-6

FCI Reserve d (Not Used)

Non-Fatal

0x000040000000

3-7

The ADC for monitoring the temperature inside the unit fails to respond.

Non-Fatal

0x000080000000

4-0

The Delta-R ADC fails to respond.

Fatal

0x000100000000

4-1

ST80: Not use d. ST100A: 4-20mA Input / Pressure Input ADC fails to respond.

Non-Fatal

0x000200000000

4-2

Reference-R value is above operating l imit.

Non-Fatal

0x000400000000

4-3

The Inter-Integrated Circuit channel 0 bus fails to communicate.

Non-Fatal

0x000800000000

4-4

The ADC for monitoring heater’s conditions fails to respond.

Fatal

0x00100000000

4-5

The port expansion integrated chip fai ls to respond.

Non-Fatal

0x00200000000

4-6

FCI Reserve d (Not Used)

Non-Fatal

0x00400000000

4-7

FCI Reserve d (Not Used)

Non-Fatal

0x00800000000

5-0

The FRAM of the Flow Element fails to respond.

Non-Fatal

0x01000000000

5-1

The Active excitation current Integrated Circuit (IC) fails.

Non-Fatal

0x02000000000

5-2

The Reference ex ci tation current Integrated Circuit (IC) fails.

Non-Fatal

0x04000000000

5-3

CORE: process data are not updated because (all) FE's are in self-test mode, or the system is in non-operating mode.

Non-Fatal

0x08000000000

5-4

Reference-R value is below operating limit.

Non-Fatal

0x10000000000

5-5

Delta-R value is above operating limit.

Non-Fatal

0x20000000000

5-6

Delta-R value is below operating limit.

Non-Fatal

0x40000000000

5-7

The unit is performing a (diagnostic ) test.

Non-Fatal

0x80000000000

Table 33 – Detailed CORE Fault Register (CORE 2V Command)

Notes: 1. Fault Type reflects factory default programming. The Fatal/Non-Fatal designation is programmable via the Configurator

software’s FE Faults tab (Factory branch menu tree – requires entry of appropriate level password).

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Octet-Bit

Fault Name

Fault Description

Fault Type1

Hex Bit Map

0-0

FCI Reserve d (Not Used)

—

—

0x00000001

0-1

FCI Reserve d (Not Used)

—

—

0x00000002

0-2

The heater current analog-to-digital converter shows

0-3

FCI Reserve d (Not Used)

—

—

0x00000008

0-4

FCI Reserve d (Not Used)

—

—

0x00000010

0-5

FCI Reserve d (Not Used)

—

—

0x00000020

0-6

SENSOR_ABOVE_MAX_FLOW_FAULT

Process flow is above the maximum limi t.

Fatal

0x00000040

0-7

SENSOR_OVER_TEMP_FAULT

Process tem perature is above the maximum limit.

Fatal

0x00000080

1-0

SENSOR_UNDER_TEMP_FAULT

Process tem perature is below the minimum limit.

Fatal

0x00000100

The heater is shorted or its value is below the normal
operating value.

The heater is open or its value is above the normal
operating value.

The heater current analog-to-digital converter (ADC) fails
to respond.

1-4

dR_ADC_FAULT

The Delta-R ADC fails to respond.

Fatal

0x00001000

1-5

REF_ADC_FAULT

The Referenc e-R ADC converter fails to respond.

Fatal

0x00002000

Temperature inside the unit is outsi de the limits (above or
below the op erating limits).

The Inter-Integrated Circuit (I2C) channel 0 bus fails to
communicate.

The Referenc e-R ADC’s count number is below the
minimum.

2-2

FCI Reserve d (Not Used)

—

—

0x00020000

2-2

PORT_EXPANDER_FAULT

The port expansion integrated chip fai ls to respond.

Non-Fatal

0x00040000

2-3

BELOW_dR_MIN_FAULT

Delta-R value is below minimum limit.

Fatal

0x00080000

The ADC for monitoring the temperature inside the unit
fails to respond.

2-5

LTC2654_DAC_FAULT

The digital-to-a nalog converter fails t o respond.

Non-Fatal

0x00200000

2-6

FE_FRAM_FAULT

The FRAM of the Flow Element fails to respond.

Non-Fatal

0x00400000

2-7

FCI Reserve d (Not Used)

—

—

0x00800000

The ADC for monitoring heater’s conditions fails to

3-1

ACT_EXC_CURR_FAULT

The Active excitation current Integrated Circuit (IC) fails.

Non-Fatal

0x02000000

The Referenc e excitation current Integrated Circuit (IC)
fails.

3-3

SENSOR_REFR_ABOVE_ABS_MAX

Reference-R value is above operating l imit.

Fatal

0x08000000

3-4

SENSOR_REFR_BELOW_ABS_MIN

Reference-R value is below operating l imit.

Non-Fatal

0x10000000

3-5

SENSOR_DR_ABOVE_ABS_MAX

Delta-R value is above operating limit.

Non-Fatal

0x20000000

3-6

SENSOR_DR_BELOW_ABS_MIN

Delta-R value is below operating limit.

Fatal

0x40000000

3-7

FE_AUTO_CHECK

The unit is performing a (diagnostic ) test.

Fatal

0x80000000

Table 34 – FE Fault Register (FE DF Command)

HTR_CURR_ADC_OVER_RANGE_FAULT

1-1 HEATER_SHORTED_FAULT

1-2 HEATER_OPEN_FAULT

1-3 HTR_CURR_ADC_FAULT

1-6 BRD_TEMP_LIMITS_FAULT

1-7 I2C0_FAULT

2-0 SENSOR_BELOW_MIN_ADC_FAULT

2-4 TMP100_ADC_FAULT

saturation at its input.

Fatal 0x00000004

Fatal 0x00000200

Fatal 0x00000400

Non-Fatal 0x00000800

Fatal 0x00004000

Fatal 0x00008000

Fatal 0x00010000

Non-Fatal 0x00100000

3-0 HTRS_MON_ADC_FAULT

3-2 REF_EXC_CURR_FAULT

respond.

Non-Fatal 0x01000000

Non-Fatal 0x04000000

Notes: 1. Fault Type reflects factory default programming. The Fatal/Non-Fatal designation is programmable via the Configurator

software’s FE Faults tab (Factory branch menu tree – requires entry of appropriate level password).

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