Sierra 241 Series, 240-V, 240 Series, 240-VT, 240-VTP Instruction Manual

Sierra 240/241Series Instruction Manual Table of Contents

240/241 Series

Vortex Volumetric and Mass Flow Meters

Models: 240-V, VT, VTP, LP / 241-V, VT, VTP, LP, Cryogenic

Instruction Manual

Document Number IM-240

Revision: M.8/19

IM-240 0-1

Table of Contents Sierra 240/241Series Instruction Manual

GLOBAL SUPPORT LOCATIONS: WE ARE HERE TO HELP!

CORPORATE HEADQUARTERS

5 Harris Court, Building L Monterey, CA 93940
Phone [phone] [phone] Fax [phone]

www.sierrainstruments.com

EUROPE HEADQUARTERS

Bijlmansweid 2 1934RE Egmond aan den Hoef
The Netherlands
Phone [phone] Fax [phone]

ASIA HEADQUARTERS

Second Floor Building 5
Senpu Industrial park
25 Hangdu Road Hangtou Town
Pu Dong New District
Shanghai, P.R. China Post Code 201316
Phone: [phone] Fax: [phone]

IMPORTANT CUSTOMER NOTICE: OXYGEN SERVICE

Unless you have specifically ordered Sierra’s optional O2 cleaning, this flow meter may not

be fit for oxygen service. Sierra Instruments, Inc., is not liable for any damage or personal in­jury, whatsoever, resulting from the use of Sierra Instruments standard mass flow meters for
oxygen gas. You are responsible for cleaning the mass flow meter to the degree required for
your oxygen flow application. However, some models can only be properly cleaned during

the manufacturing process.

© COPYRIGHT SIERRA INSTRUMENTS 2016

No part of this publication may be copied or distributed, transmitted, transcribed, stored in
a retrieval system, or translated into any human or computer language, in any form or by
any means, electronic, mechanical, manual, or otherwise, or disclosed to third parties
without the express written permission of Sierra Instruments. The information contained in
this manual is subject to change without notice.

TRADEMARKS

InnovaFlo® and InnovaMass® are trademarks of Sierra Instruments, Inc. Other product
and company names listed in this manual are trademarks or trade names of their respec­tive manufacturers.

0-2 IM-240

Sierra 240/241Series Instruction Manual Table of Contents

Table of Contents

Chapter 1 Introduction

InnovaMassVortex Mass Flow Meters ................................................ 1-1

Using this Manual ......................................................................... 1-1

Note and Safety Information ......................................................... 1-2

Receipt of System Components .................................................... 1-2

Technical Assistance ..................................................................... 1-2

How the InnovaMass Vortex Meter Operates ..................................... 1-3

Velocity Measurement .................................................................. 1-3

Vortex Shedding Frequency .......................................................... 1-4

Vortex Frequency Sensing ............................................................ 1-4

Flow Velocity Range ..................................................................... 1-5

Temperature Measurement ............................................................ 1-6

Pressure Measurement ................................................................... 1-6

Flow Meter Configurations .................................................................. 1-7

Multivariable Options ................................................................... 1-7

Line Size / Process Conditions / Materials .................................... 1-8

Flow Meter Electronics ................................................................. 1-8

Chapter 2 Installation

Installation Overview ........................................................................... 2-1

Flow Meter Installation Requirements .......................................... 2-1

Unobstructed Flow Requirements ................................................. 2-2

240 In-Line Flow Meter Installation .................................................... 2-3

Wafer-Style Flow Meter Installation ............................................. 2-4

Flange-Style Flow Meter Installation ............................................ 2-5

241 Insertion Flow Meter Installation ................................................. 2-6

Cold Tap Guidelines...................................................................... 2-7

Hot Tap Guidelines ....................................................................... 2-8

Flow Meter Insertion ......................................................................... 2-10

Installing Meters with a Compression Connection ..................... 2-11

Installing Meters with a Packing Gland Connection ................... 2-13

Installing Meters (Packing Gland), No Insertion Tool ................ 2-16

Adjusting Meter Orientation .............................................................. 2-18

Display/Keypad Adjustment ....................................................... 2-18

Enclosure Adjustment ................................................................. 2-19

Loop Power Flow Meter Wiring Connections ................................... 2-20

Input Power Connections ............................................................ 2-20

4-20 mA Output Connections ..................................................... 2-21

Pulse Output Connections ........................................................... 2-22

Frequency Output Connections ................................................... 2-23

Optional Backlight Connections ................................................. 2-23

Remote Electronics Wiring ......................................................... 2-24

High Power Flow Meter Wiring Connections ................................... 2-26

Input Power Connections ............................................................ 2-26

4-20 mA Output Connections ..................................................... 2-28

Frequency Output Connections ................................................... 2-29

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Table of Contents Sierra 240/241Series Instruction Manual

Pulse Output Connections ........................................................... 2-30

Alarm Output Connections .......................................................... 2-32

Remote Electronics Wiring ......................................................... 2-33

Optional Input Electronics Wiring .............................................. 2-34

Optional Energy EMS RTD Input Wiring .................................. 2-34

Optional External 4-20 mA Input Wiring ................................... 2-35

Optional Contact Closure Input Wiring ...................................... 2-36

Chapter 3 Operating Instructions

Flow Meter Display/Keypad ................................................................ 3-1

Start Up ................................................................................................ 3-2

Using the Setup Menus ........................................................................ 3-4

Programming the Flow Meter ....................................................... 3-5

Output Menu ................................................................................. 3-6

Display Menu ................................................................................ 3-8

Alarms Menu ................................................................................. 3-9

Totalizer #1 Menu ....................................................................... 3-10

Totalizer #2 Menu ....................................................................... 3-11

Energy Menu ....................................................................... 3-12

Fluid Menu .................................................................................. 3-13

Units Menu .................................................................................. 3-14

Time and Date Menu ................................................................... 3-15

Diagnostics Menu ........................................................................ 3-16

Calibration Menu ......................................................................... 3-17

Password Menu ........................................................................... 3-18

Chapter 4 Serial Communications

HART Communications ...................................................................... 4-1

Wiring ........................................................................................... 4-2

HART Commands with the DD Menu .......................................... 4-3

HART Commands with Generic DD Menu .................................. 4-4

MODBUS Communications ................................................................ 4-7

Wiring ........................................................................................... 4-7

Menu Items .................................................................................... 4-8

Register Definitions ..................................................................... 4-10

BACNET MSTP Communications .................................................... 4-21

BACNET MSTP Description ...................................................... 4-21

Baud Rates on the MS/TP Bus .................................................... 4-21

Supported BACnet Objects ......................................................... 4-22

ANNEX - BACnet Protocol Implementation Conformance

Statement ..................................................................................... 4-28

Acronyms and Definitions .......................................................... 4-34

Chapter 5 Troubleshooting and Repair

Hidden Diagnostics Menus .................................................................. 5-1

Level One Hidden Diagnostics Values ......................................... 5-3

Level Two Hidden Diagnostics Values ......................................... 5-4

Analog Output Calibration .................................................................. 5-7

Troubleshooting the Flow Meter ......................................................... 5-8

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Sierra 240/241Series Instruction Manual Table of Contents

First Check Items ................................................................................. 5-8

Record Values ...................................................................................... 5-8

Determine the Fault ............................................................................. 5-9

Symptom: Output at no Flow ........................................................ 5-9

Symptom: Erratic Output .............................................................. 5-9

Symptom: No Output .................................................................. 5-11

Symptom: Meter Displays Temperature Fault ............................ 5-12

Symptom: Meter Displays Pressure Fault ................................... 5-13

Electronics Assembly Replacement ................................................... 5-14

Pressure Sensor Replacement (Series 240 Only) .............................. 5-15

Returning Equipment to the Factory .................................................. 5-15

Appendix A Product Specifications

Appendix B Approvals

Appendix C Flow Meter Calculations

Appendix D Glossary

Appendix E Warranty Policy

Figures

1-1. In-Line Vortex Multivariable Mass Flow Meter .................... 1-3

1-2. Measurement Principle of Vortex Flow Meters...................... 1-4

1-3. Reynolds Number Range of the InnovaMass ......................... 1-6

2-1. Recommended Pipe Length Required for Installation ............ 2-2

2-2. Flange Bolt Torquing Sequence ............................................. 2-3

2-3. Wafer-Style Flow Meter Installation ...................................... 2-4

2-4. Flange-Style Flow Meter Installation ..................................... 2-5

2-5. Hot Tap Sequence ................................................................... 2-9

2-6. Insertion Calculation (Compression Type) ........................... 2-11

2-7. Flow Meter with Compression Type Fitting ......................... 2-12

2-8. Insertion Calculation (Meters with Insertion Tool) .............. 2-13

2-9. Flow Meter with Permanent Insertion Tool .......................... 2-14

2-10. Flow Meter with Removable Insertion Tool ......................... 2-15

2-11. Insertion Calculation (Meters without Insertion Tool) ......... 2-16

2-12. Display/Keypad Viewing Adjustment .................................. 2-18

2-13. Enclosure Viewing Adjustment ............................................ 2-19

2-14. Loop Power Wiring Terminals ............................................. 2-20

2-15. DC Power Connections ......................................................... 2-20

2-16. Load Resistance Versus Input Voltage ................................. 2-21

2-17. Isolated Pulse Output Using External Power Supply ........... 2-22

2-18. Non-Isolated Pulse Output Using External Power Supply ... 2-22
2-19. Isolated Frequency Output Using External Power Supply ... 2-23

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Table of Contents Sierra 240/241Series Instruction Manual

2-20. Non-Isolated Freq. Out. Using External Power Supply ........ 2-23

2-21. Backlight Using External Power Supply .............................. 2-23

2-22. Loop Power Volumetric Flowmeter Junction Box ............... 2-24

2-23. Loop Power Mass Flowmeter Junction Box ......................... 2-25

2-24. AC Wiring Terminals ........................................................... 2-26

2-25. AC Power Connections ......................................................... 2-26

2-26. DC Wiring Terminals ........................................................... 2-27

2-27. DC Power Connections ......................................................... 2-27

2-28. Load Resistance Versus Input Voltage ................................. 2-28

2-29. Isolated 4-20 Output Using External Power Supply ............. 2-28

2-30. Non-Isolated 4-20 Output Using Input Power Supply .......... 2-29

2-31. Isolated 4-20 Output Using Meter Power Supply (AC only) 2-29
2-32. Isolated Frequency Output Using External Power Supply ... 2-30
2-33. Non-Isolated Frequency Output Using Input Power Supply 2-30

2-34. Isolated Freq. Out. Using Meter Power Sup. (AC only) ....... 2-30

2-35. Isolated Pulse Output Using External Power Supply ........... 2-31

2-36. Non-Isolated Pulse Output Using Input Power Supply ........ 2-31

2-37. Isolated Pulse Output Using Meter Power Sup. (AC only) .. 2-31

2-38. Isolated Alarm Output Using External Power Supply .......... 2-32

2-39 Non-Isolated Alarm Output Using Meter Power Supply ...... 2-32

2-40 Isolated Alarm Output Using Meter Power Sup. (AC only) 2-33

2-41 High Power Flow Meter Junction Box ................................ 2-33

2-42. Optional Energy EMS RTD Input Wiring ............................ 2-34

2-43. External 4-20 mA Input Wiring – External Power Supply ... 2-35

2-44. External 4-20 mA Input Wiring – DC Powered Meter ......... 2-35

2-45. External 4-20 mA Input Wiring – AC Powered Meter ......... 2-36

2-46. Optional External Contact Closure Input Wiring ................. 2-36

3-1. Flow Meter Display/Keypad ................................................... 3-1

4-1. Loop Powered Meter Wiring (HART) .................................... 4-1

4-2. DC Powered Meter Wiring (HART) ...................................... 4-2

4-3. AC Powered Meter Wiring (HART) ...................................... 4-2

4-4. RS-485 Wiring (MODBUS) ................................................... 4-7

5-1. Electronics Stack Sensor Connections .................................. 5-11

5-2. Remote Feed Through Board Sensor Connections ............... 5-11

5-3. Vortex Sensor Connector ...................................................... 5-12

5-4. Temperature Sensor Connector ............................................ 5-13

5-5. Pressure Sensor Connector ................................................... 5-13

Tables

2-1. Minimum Recommended Stud Bolt Lengths ......................... 2-3

4-1. Byte Order (MODBUS) .......................................................... 4-9

4-2. Register Definitions (MODBUS) ......................................... 4-11

0-6 IM-240

Sierra 240/241Series Instruction Manual Table of Contents

Warnings and Cautions

Warning!

Consult the flow meter nameplate for specific flow meter approvals before any hazardous
location installation.

Hot tapping must be performed by a trained professional. U.S. regulations often require a
hot tap permit. The manufacturer of the hot tap equipment and/or the contractor perform­ing the hot tap is responsible for providing proof of such a permit.

All flow meter connections, isolation valves and fittings for cold/hot tapping must have the
same or higher pressure rating as the main pipeline.

For Series 241 insertion flow meter installations, an insertion tool must be used for any
installation where a flow meter is inserted under pressure greater than 50 psig.

To avoid serious injury, DO NOT loosen a compression fitting under pressure.

To avoid potential electric shock, follow National Electric Code or your local code when
wiring this unit to a power source. Failure to do so could result in injury or death. All AC
power connections must be in accordance with published CE directives. All wiring proce­dures must be performed with the power Off.

Before attempting any flow meter repair, verify that the line is not pressurized. Always
remove main power before disassembling any part of the mass flow meter.

Caution!

Calibration must be performed by qualified personnel. VorTek Instruments, Inc., strongly
recommends that you return your flow meter to the factory for calibration.

In order to achieve accurate and repeatable performance, the flow meter must be in­stalled with the specified minimum length of straight pipe upstream and downstream of
the flow meter’s sensor head.

When using toxic or corrosive gases, purge the line with inert gas for a minimum of four
hours at full gas flow before installing the flow meter.

For Series 241 insertion flow meter installations, the sensor alignment pointer must point
downstream in the direction of flow.

The AC wire insulation temperature rating must meet or exceed 85°C (185°F)

IM-240 0-7

Sierra 240/241 Series Instruction Manual Chapter 1 Introduction

Chapter 1 Introduction

InnovaMass® Multivariable Mass Vortex Flow Meter

Sierra Instruments’ InnovaMass 240 In-Line and the InnovaMass 241 In­sertion vortex flow meters provide a reliable solution for process flow
measurement. From a single entry point in the pipeline, 240 and 241 of­fer precise measurements of mass or volumetric flow rates.

Multivariable Mass Flow Meters

Mass flow meters utilize three primary sensing elements: a vortex shed­ding velocity sensor, an RTD temperature sensor, and a solid state pres­sure sensor to measure the mass flow rate of gases, liquids, and steam.
Meters are available as loop powered devices or with up to three 4-20
mA analog output signals for monitoring your choice of the five process
variables (mass flow, volumetric flow, temperature, pressure and fluid
density). The Energy Monitoring option permits real-time calculation of
energy consumption for a facility or process.

Volumetric Flow Meters

The primary sensing element of a volumetric flow meter is a vortex
shedding velocity sensor. Meters are loop powered. The analog 4-20
mA output signal offers your choice of volumetric or mass flow rate.
Mass flow rate is based on a constant value for fluid density stored in the
instrument’s memory.

Both the mass and volumetric flow meters can be ordered with a local
keypad/display which provides instantaneous flow rate, total, and process
parameters in engineering units. A pulse output signal for remote totali­zation and MODBUS or HART communications are also available. In­novaMass digital electronics allows for easy reconfiguration for most
gases, liquids and steam. The Sierra InnovaMass 240 and 241 vortex
meters’ simple installation combines with an easy-to-use interface that
provides quick set up, long term reliability and accurate mass flow meas­urement over a wide range of flows, pressures and temperatures.

Using This Manual

This manual provides information needed to install and operate both the
240 In-Line and 241 Insertion InnovaMass vortex flow meters.

 Chapter 1 includes the introduction and product description
 Chapter 2 provides information needed for installation
 Chapter 3 describes system operation and programming
 Chapter 4 provides information on HART and MODBUS protocols
 Chapter 5 covers troubleshooting and repair

Appendix A - Product Specifications, Appendix B – Approvals,
Appendix C – Flow Meter Calculations, Appendix D – Glossary of
Terms

IM-240 1-1

Chapter 1 Introduction Sierra 240/241 Series Instruction Manual

Warning!

Caution!

Note

This statement appears with
information that is important to
protect people and equipment
from damage. Pay very close
attention to all warnings that
apply to your application.

This statement appears with
information that is important
for protecting your equipment
and performance. Read and
follow all cautions that apply
to your application.

This statement appears with
a short message to alert you
to an important detail.

Note and Safety Information

We use note, caution and warning statements throughout this book to
draw your attention to important information.

Receipt of System Components

When receiving a Sierra Instruments mass flow meter, carefully check
the outside packing carton for damage incurred in shipment. If the carton
is damaged, notify the local carrier and submit a report to the factory or
distributor. Remove the packing slip and check that all ordered compo­nents are present. Make sure any spare parts or accessories are not dis­carded with the packing material. Do not return any equipment to the
factory without first contacting Sierra Instruments’ Customer Service.

Technical Assistance

If you encounter a problem with your flow meter, review the configura­tion information for each step of the installation, operation and set up pro­cedures. Verify that your settings and adjustments are consistent with fac­tory recommendations. Refer to Chapter 5, Troubleshooting, for specific
information and recommendations.

If the problem persists after following the troubleshooting procedures
outlined in Chapter 5, contact Sierra Instruments, Technical Support at
(800)-866-0200 or [phone] between 7:30 a.m. and 5:00 p.m.
MST. When calling Technical Support, have the following information
on hand:

 the serial number and Sierra order number (all marked on the

meter nameplate)

 the problem you are encountering and any corrective action

taken

 application information (fluid, pressure, temperature and

piping configuration)

1-2 IM-240

Sierra 240/241 Series Instruction Manual Chapter 1 Introduction

How the InnovaMass Vortex Mass Flow Meter Operates

Figure 1-1. In-Line Vortex Multivariable Mass Flow Meter

Sierra’s 240/241 Series multivariable vortex mass flow meters use a
unique sensor head to monitor mass flow rate by directly measuring three
variables–fluid velocity, temperature and pressure. The built-in flow
computer calculates the mass flow rate and volumetric flow rate based on
these three direct measurements. The velocity, temperature and pressure
sensing head is built into the vortex meter’s flow body. To measure fluid
velocity, the flow meter incorporates a bluff body (shedder bar) in the
flow stream and measures the frequency of vortices created by the shed­der bar. Temperature is measured using a platinum resistance tempera­ture detector (PRTD). Pressure measurement is achieved using a solid­state pressure transducer. All three elements are combined into an inte­grated sensor head assembly located downstream of the shedder bar
within the flow body.

Velocity Measurement

The InnovaMass vortex velocity sensor is a patented mechanical design
that minimizes the effects of pipeline vibration and pump noise, both of
which are common error sources in flow measurement with vortex flow
meters. The velocity measurement is based on the well-known Von Kar­man vortex shedding phenomenon. Vortices are shed from a shedder bar,
and the vortex velocity sensor located downstream of the shedder bar
senses the passage of these vortices. This method of velocity measurement
has many advantages including inherent linearity, high turndown, reliabil­ity and simplicity.

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Chapter 1 Introduction Sierra 240/241 Series Instruction Manual

Vortex Shedding Frequency

Von Karman vortices form downstream of a shedder bar into two distinct
wakes. The vortices of one wake rotate clockwise while those of the oth­er wake rotate counterclockwise. Vortices generate one at a time, alter­nating from the left side to the right side of the shedder bar. Vortices in­teract with their surrounding space by over-powering every other nearby
swirl on the verge of development. Close to the shedder bar, the distance
(or wave length) between vortices is always constant and measurable.
Therefore, the volume encompassed by each vortex remains constant, as
shown below. By sensing the number of vortices passing by the velocity
sensor, the InnovaMass flow meter computes the total fluid volume.

Figure 1-2. Measurement Principle of Vortex Flow Meters

Vortex Frequency Sensing

The velocity sensor incorporates a piezoelectric element that senses the
vortex frequency. This element detects the alternating lift forces pro­duced by the Von Karman vortices flowing downstream of the vortex
shedder bar. The alternating electric charge generated by the piezoelec­tric element is processed by the transmitter’s electronic circuit to obtain
the vortex shedding frequency. The piezoelectric element is highly sensi­tive and operates over a wide range of flows, pressures and temperatures.

1-4 IM-240

Sierra 240/241 Series Instruction Manual Chapter 1 Introduction

Re =

 V D



St =

f d

V

Gas

Liquid

Vmin

25



ft/s

1 ft/s

English  (lb/ft3)

Vmax

300 ft/s

30 ft/s

Vmin

37



m/s

0.3 m/s

Metric  (kg/m3)

Vmax

91 m/s

9.1 m/s

Flow Velocity Range

To ensure trouble-free operation, vortex flow meters must be correctly
sized so that the flow velocity range through the meter lies within the
measurable velocity range (with acceptable pressure drop) and the linear
range.

The measurable range is defined by the minimum and maximum velocity
using the following table.

The pressure drop for series 241 insertion meters is negligible. The pressure drop
for 240 Series in-line meters is defined as:

P = .00024  V
P = .000011  V

2

English units (P in psi,  in lb/ft3, V in ft/sec)

2

Metric units (P in bar,  in kg/m3, V in m/sec)

The linear range is defined by the Reynolds number. The Reynolds number is the
ratio of the inertial forces to the viscous forces in a flowing fluid and is defined
as:

Where

Re = Reynolds Number
 = mass density of the fluid being measured
V = velocity of the fluid being measured
D = internal diameter of the flow channel
 = viscosity of the fluid being measured

The Strouhal number is the other dimensionless number that quantifies the
vortex phenomenon. The Strouhal number is defined as:

Where

St = Strouhal Number
f = frequency of vortex shedding
d = shedder bar width
V = fluid velocity

IM-240 1-5

Chapter 1 Introduction Sierra 240/241 Series Instruction Manual

0.3

0.2

0.1

0.0

3 4

10

Linear range

Rey nolds Number, Re

Strouhal Number, St

10

5

10 10

8

10

6

10

7

5000

Corrected range

As shown in Figure 1-3, InnovaMass meters exhibit a constant Strouhal
number across a large range of Reynolds numbers, indicating a con­sistent linear output over a wide range of flows and fluid types. Below
this linear range, the intelligent electronics in InnovaMass automatically
corrects for the variation in the Strouhal number with the Reynolds num­ber. The meter’s smart electronics corrects for this non-linearity via its
simultaneous measurements of the process fluid temperature and pres­sure. This data is then used to calculate the Reynolds number in real
time. InnovaMass meters automatically correct down to a Reynolds
number of 5,000.

Figure 1-3. Reynolds Number Range for the InnovaMass

Temperature Measurement

InnovaMass Flow Meters use a 1000 ohm platinum resistance temperature
detector (PRTD) to measure fluid temperature.

Pressure Measurement

InnovaMass Flow Meters incorporate a solid-state pressure transducer
isolated by a 316 stainless steel diaphragm. The transducer itself is mi­cro-machined silicon, fabricated using integrated circuit processing tech­nology. A nine-point pressure/temperature calibration is performed on
every sensor. Digital compensation allows these transducers to operate
within a 0.3% of full scale accuracy band within the entire ambient tem­perature range of -40°F to 140°F (-40 to 60°C). Thermal isolation of the
pressure transducer ensures the same accuracy across the allowable pro­cess fluid temperature range of -330°F to 750°F (-200 to 400°C).

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Sierra 240/241 Series Instruction Manual Chapter 1 Introduction

Flow Meter Configurations

InnovaMass Vortex Mass Flow Meters are available in two
model configurations:

 240 Series in-line flow meter (replaces a section of the pipeline)
 241 Series insertion flow meter (requires a “cold” tap or a “hot” tap

into an existing pipeline)

Both the in-line and insertion configurations are similar in that they both
use identical electronics and have similar sensor heads. Besides installa­tion differences, the main difference between an in-line flow meter and
an insertion flow meter is their method of measurement.

For an in-line vortex flow meter, the shedder bar is located across the en­tire diameter of the flow body. Thus, the entire pipeline flow is included
in the vortex formation and measurement. The sensing head, which di­rectly measures velocity, temperature and pressure is located just down­stream of the shedder bar.

Insertion vortex flow meters have a shedder bar located across the di­ameter of a short tube. The velocity, temperature and pressure sensor are
located within this tube just downstream of a built-in shedder bar. This
entire assembly is called the insertion sensing head. It fits through any
entry port with a 1.875 inch minimum internal diameter.

The sensing head of an insertion vortex flow meter directly monitors the
velocity at a point in the cross-sectional area of a pipe, duct, or stack (re­ferred to as “channels”). The velocity at a point in the pipe varies as a func­tion of the Reynolds number. The insertion vortex flow meter computes the
Reynolds number and then computes the total flow rate in the channel. The
output signal of insertion meters is the total flow rate in the channel. The
accuracy of the total flow rate computation depends on adherence to the
piping installation requirements given in Chapter 2. If adherence to those
guidelines cannot be met, contact the factory for specific installation ad­vice.

Multivariable Options

The 240 or 241 models are available with the following options:
V, volumetric flowmeter; VT, velocity and temperature sensors; VTP,
velocity, temperature, and pressure sensors; VT-EM energy output op­tions; VTP-EM, energy options with pressure; VT-EP, external pressure
transmitter input.

IM-240 1-7

Chapter 1 Introduction Sierra 240/241 Series Instruction Manual

Line Size / Process Connections / Materials

The 240 In-line model is built for line sizes ½ through 4 inch wafer or ½
through 8 inch flanged design using ANSI 150, 300, 600, PN16, 40, or
64 class flanges.

The 241 Insertion model can be used in line sizes 2 inch and greater and
is built with a compression fitting or packing gland design using 2 inch
NPT, or 2 inch flanged connections (ANSI 150, 300, 600, PN16, 40, or
64 class flanges). The packing gland design can be ordered with a per­manent or removable retractor.

The 240 In-line model can be built with A105 carbon steel, 316L stain­less steel, or Hastelloy C-276. The 241 Insertion model can be built with
316L stainless steel or Hastelloy C-276.

Flow Meter Electronics

InnovaMass Flow Meter electronics are available mounted directly to the
flow body, or remotely mounted. The electronics housing may be used
indoors or outdoors, including wet environments. Available input power
options are: DC loop powered (2-wire), DC powered, or AC powered.
Three analog output signals are available for your choice of three of the
five process variables: mass flow rate, volumetric flow rate, temperature,
pressure or fluid density. A pulse output signal for remote totalization
and MODBUS or HART communications are also available.

InnovaMass Flow Meters include a local 2 x 16 character LCD display
housed within the enclosure. Local operation and reconfiguration is ac­complished using six pushbuttons operated via finger touch. For hazard­ous locations, the six buttons can be operated with the electronics enclo­sure sealed using a hand-held magnet, thereby not compromising the in­tegrity of the hazardous location certification.

The electronics include nonvolatile memory that stores all configuration
information. The nonvolatile memory allows the flow meter to function
immediately upon power up, or after an interruption in power. All

flowmeters are calibrated and configured for the customer’s flow
application.

1-8 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Warning!

Consult the flow meter nameplate for

specific flow meter approvals before any

hazardous location installation.

Chapter 2 Installation

Installation Overview

Sierra’s InnovaMass Vortex Flow Meter installations are simple and
straightforward. Both the 240 In-Line and 241 Insertion type flow meter
installations are covered in this chapter. After reviewing the installation
requirements given below, see page 2-3 for 240 installation instructions.
See page 2-6 for 241 installation instructions. Wiring instructions begin
on page 2-20.

Flow Meter Installation Requirements

Before installing the flow meter, verify the installation site allows for
these considerations:

1. Line pressure and temperature will not exceed the flow meter

rating.

2. The location meets the required minimum number of pipe di-

ameters upstream and downstream of the sensor head as illus­trated in Figure 2-1.

3. Safe and convenient access with adequate overhead clear-

ance for maintenance purposes.

4. Verify that the cable entry into the instrument meets the

specific standard required for hazardous area installations.
The cable entry device shall be of a certified flameproof
type, suitable for the conditions of use and correctly in­stalled. The degree of protection of at least IP66 to EN
60529 is only achieved if certified cable entries are used
that are suitable for the application and correctly installed.
Unused apertures shall be closed with suitable blanking el­ements.

5. For remote installations, verify the supplied cable length is

sufficient to connect the flow meter sensor to the remote
electronics.

Also, before installation check your flow system for anomalies such as:

• leaks

• valves or restrictions in the flow path that could create disturb-

ances in the flow profile that might cause unexpected flow rate in­dications

IM-240 2-1

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Minimum Required

Upstream

Diameters

Minimum Required

Downstream Diameters

Example A B 1 10 D

5 D 2 15 D

5 D 3 25 D

10 D

4

10 D

5 D

5

20 D

5 D

6

25 D

10 D

D=Internal diameter of channel. N/A=Not applicable

Unobstructed Flow Requirements

Select an installation site that will minimize possible distortion in the flow
profile. Valves, elbows, control valves and other piping components may
cause flow disturbances. Check your specific piping condition against the
examples shown below. In order to achieve accurate and repeatable per­formance install the flow meter using the recommended number of
straight run pipe diameters upstream and downstream of the sensor.

Note: For liquid applications in vertical pipes, avoid installing with flow
in the downward direction because the pipe may not be full at all points.
Choose to install the meter with flow in the upward direction if possible.

2-2 IM-240

Figure 2-1. Recommended Pipe Length Requirements for Installation, 240/241 Series

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Stud Bolt Lengths for Each Flange Rating (inches)

Line Size

Class 150
and PN16

Class 300
and PN40

Class 600
and PN64

1 inch

6.00

7.00

7.50

1.5 inch

6.25

8.50

9.00

2 inch

8.50

8.75

9.50

3 inch

9.00

10.00

10.50

4 inch

9.50

10.75

12.25

240 In-Line Flow Meter Installation

Install the 240 In-Line Flow Meter between two conventional pipe flanges
as shown in Figures 2-3 and 2-4. Table 2-1 provides the recommended
minimum stud bolt lengths for wafer-style meter body size and different
flange ratings.

The meter inside diameter is equal to the same size nominal pipe ID in

schedule 80. For example, a 2” meter has an ID of 1.939” (2” schedule

80). Do not install the meter in a pipe with an inside diameter smaller
than the inside diameter of the meter. For schedule 160 and higher

pipe, a special meter is required. Consult the factory before purchasing
the meter.

The InnovaMass 240 meters require customer-supplied gaskets. When se­lecting gasket material make sure that it is compatible with the process
fluid and pressure ratings of the specific installation. Verify that the inside
diameter of the gasket is larger than the inside diameter of the flow meter
and adjacent piping. If the gasket material extends into the flow stream, it
will disturb the flow and cause inaccurate measurements.

Flange Bolt Specifications

Table 2-1. Minimum Recommended Stud Bolt Lengths for Wafer Meters

The required bolt load for sealing the gasket joint is affected by several
application-dependent factors, therefore the required torque for each ap­plication may be different. Refer to the ASME Pressure Vessel Code
guidelines for bolt tightening standards.

1

34

2

1

8

6

5

34

7

2

4

10

1

12

8

6

5

9

3

7

11

2

4-bolt 8-bolt 12-bolt

Figure 2-2. Flange Bolt Torquing Sequence

IM-240 2-3

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Caution!

When using toxic or corrosive

gases, purge the line with inert

gas for a minimum of four hours

at full gas flow before installing

the flow meter.

Wafer-Style Flow Meter Installation

Install the wafer-style meter between two conventional pipe flanges of the
same nominal size as the flow meter. If the process fluid is a liquid, make
sure the meter is located where the pipe is always full. This may require
locating the meter at a low point in the piping system. Note: Vortex flow
meters are not suitable for two-phase flows (i.e., liquid and gas mixtures).
For horizontal pipelines having a process temperature above 300° F,
mount the meter at a 45 or 90-degree angle to avoid overheating the elec­tronics enclosure. To adjust the viewing angle of the enclosure or dis­play/keypad, see page 2-18 and 2-19.

2-4 IM-240

Figure 2-3. Wafer-Style Flow Meter Installation

When installing the meter make sure the section marked with a flow arrow is po­sitioned upstream of the outlet, with the arrow head pointing in the direction of
flow. (The mark is on the wafer adjacent to the enclosure mounting neck.) This
ensures that the sensor head is positioned downstream of the vortex shedder bar
and is correctly aligned to the flow. Installing the meter opposite this direction

will result in completely inaccurate flow measurement. To install the meter:

1. Turn off the flow of process gas, liquid or steam. Verify that the line

is not pressurized. Confirm that the installation site meets the required
minimum upstream and downstream pipe diameters.

2. Insert the studs for the bottom side of the meter body between the pipe

flanges. Place the wafer-style meter body between the flanges with the
end stamped with a flow arrow on the upstream side, with the arrow
head pointing in the direction of flow. Center the meter body inside the
diameter with respect to the inside diameter of the adjoining piping.

3. Position the gasket material between the mating surfaces. Make sure

both gaskets are smooth and even with no gasket material extending in­to the flow profile. Obstructions in the pipeline will disturb the flow and
cause inaccurate measurements.

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Caution!

When using toxic or corrosive

gases, purge the line with inert

gas for a minimum of four hours

at full gas flow before installing

the flow meter.

4. Place the remaining studs between the pipe flanges. Tighten the nuts in

the sequence shown in Figure 2-2. Check for leaks after tightening the
flange bolts

Flange-Style Flow Meter Installation

Install the flange-style meter between two conventional pipe flanges of
the same nominal size as the flow meter. If the process fluid is a liquid,
make sure the meter is located where the pipe is always full. This may re­quire locating the meter at a low point in the piping system. Note: Vortex
flow meters are not suitable for two-phase flows (i.e., liquid and gas mix­tures). For horizontal pipelines having a process temperature above 300°
F, mount the meter at a 45 or 90-degree angle to avoid overheating the
electronics enclosure. To adjust the viewing angle of the enclosure or dis­play/keypad, see page 2-18 and 2-19.

IM-240 2-5

Figure 2-4. Flange-Style Flow Meter Installation

When installing the meter make sure the flange marked with a flow arrow is posi­tioned upstream of the outlet flange, with the arrow head pointing in the direction of
flow. (The mark is on the flange adjacent to the enclosure mounting neck.) This en­sures that the sensor head is positioned downstream of the vortex shedder bar and is
correctly aligned to the flow. Installing the meter opposite this direction will result in

completely inaccurate flow measurement. To install the meter:

1. Turn off the flow of process gas, liquid or steam. Verify that the line

is not pressurized. Confirm that the installation site meets the required
minimum upstream and downstream pipe diameters.

Chapter 2 Installation Sierra 240/241Series Instruction Manual

1.875-i nch mi n.
valve bo re

2-inch mi n.

2-inch

valve size

Isolation Valve Requirements

2. Seat the meter level and square on the mating connections with the flange

stamped with a flow arrow on the upstream side, with the arrow head
pointing in the direction of flow. Position a gasket in place for each side.
Make sure both gaskets are smooth and even with no gasket material ex­tending into the flow profile. Obstructions in the pipeline will disturb the
flow and cause inaccurate measurements.

3. Install bolts in both process connections. Tighten the nuts in the se-

quence shown in Figure 2-2. Check for leaks after tightening the flange
bolts.

241 Insertion Flow Meter Installation

Prepare the pipeline for installation using either a cold tap or hot tap
method described on the following pages. Refer to a standard code for all
pipe tapping operations. The following tapping instructions are general in
nature and intended for guideline purposes only. Before installing the me­ter, review the mounting position and isolation value requirements given
below.

Mounting Position

Allow clearance between the electronics enclosure top and any other ob­struction when the meter is fully retracted.

Isolation Valve Selection

An isolation valve is available as an option with 241 meters. If you supply
the isolation valve, it must meet the following requirements:

1. A minimum valve bore di-

ameter of 1.875 inches is re-

quired, and the valve’s body

size should be two inches.
Normally, gate valves are
used.

2. Verify that the valve’s body

and flange rating are within

the flow meter’s maximum

operating pressure and tem­perature.

3. Choose an isolation valve with at least two inches existing between

the flange face and the gate portion of the valve. This ensures that the

flow meter’s sensor head will not interfere with the operation of the

isolation valve.

2-6 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Caution!

When using toxic or

corrosive gases, purge

the line with inert gas

for a minimum of four

hours at full gas flow

before installing the

flow meter.

Warning!

All flow meter connec-

tions, isolation valves

and fittings for cold tap-

ping must have the same

or higher pressure rating

as the main pipeline.

Cold Tap Guidelines

Refer to a standard code for all pipe tapping operations. The following
tapping instructions are general in nature and intended for guideline pur­poses only.

1. Turn off the flow of process gas, liquid or steam. Verify that the line

is not pressurized.

2. Confirm that the installation site meets the minimum upstream and

downstream pipe diameter requirements. See Figure 2-1.

3. Use a cutting torch or sharp cutting tool to tap into the pipe. The pipe

opening must be at least 1.875 inches in diameter. (Do not attempt to
insert the sensor probe through a smaller hole.)

4. Remove all burrs from the tap. Rough edges may cause flow profile

distortions that could affect flow meter accuracy. Also, obstructions
could damage the sensor assembly when inserting into the pipe.

5. After cutting, measure the thickness of the cut-out and record this

number for calculating the insertion depth.

6. Weld the flow meter pipe con-

nection on the pipe. Make sure
this connection is within ± 5°
perpendicular to the pipe cen­terline.

7. Install the isolation valve (if

used).

8. When welding is complete and all fittings are installed, close the

isolation valve or cap the line. Run a static pressure check on the
welds. If pressure loss or leaks are detected, repair the joint and re­test.

9. Connect the meter to the pipe process connection.

10. Calculate the sensor probe insertion depth and insert the sensor probe

into the pipe as described on the following pages.

IM-240 2-7

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Warning!

Hot tapping must be

performed by a trained

professional. US. regulations

often require a hot tap permit.

The manufacturer of the hot

tap equipment and/or the

contractor performing the hot

tap is responsible for provid-

ing proof of such a permit.

Warning!

All flow meter connections,

isolation valves, and fittings

for hot tapping must have the

same or higher pressure

rating as the main pipeline.

Hot Tap Guidelines

Refer to a standard code for all pipe tapping operations. The following
tapping instructions are general in nature and intended for guideline pur­poses only.

1. Confirm that the installation site meets the minimum upstream and

downstream pipe diameter requirements.

2. Weld a two inch mounting adapter on the pipe. Make sure the mount-

ing adapter is within ± 5° perpendicular to the pipe centerline (see
previous page). The pipe opening must be at least 1.875 inches in di­ameter.

3. Connect a two inch process connection on the mounting adapter.

4. Connect an isolation valve on the process connection. The valve’s full

open bore must be at least 1.875 inches in diameter.

5. Run a static pressure check on the welds. If pressure loss or leaks are

detected, repair the joint and re-test.

6. Connect the hot tapping equipment to the isolation valve, open the

isolation valve and drill at least a 1.875 inch diameter hole.

7. Retract the drill, close the isolation valve, and remove the hot tapping

equipment.

8. Connect the flow meter to the isolation valve and open the isolation

valve.

9. Calculate the sensor probe insertion depth and insert the sensor probe

into the pipe as described on the following pages.

2-8 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Connect isolation
valve and test for
leaks

xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx

Purge pipe

Figure 2-5. Hot Tap Sequence

IM-240 2-9

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Warning!

An insertion tool must be

used for any installation

where a flow meter is

inserted under pressure

greater than 50 psig.

Flow Meter Insertion

The sensor head must be properly positioned in the pipe. For this reason,
it is important that insertion length calculations are carefully followed. A
sensor probe inserted at the wrong depth in the pipe will result in inaccu­rate readings.

Insertion flow meters are applicable to pipes 2 inch and larger. For pipe

sizes ten inches and smaller, the centerline of the meter’s sensing head is
located at the pipe’s centerline. For pipe sizes larger than ten inches, the

centerline of the sensing head is located in the pipe’s cross section five

inches from the inner wall of the pipe; i.e., its “wetted” depth from the

wall to the centerline of the sensing head is five inches.

Insertion flow meters are available in three probe lengths:

Standard Probe configuration is used with most flow meter process
connections. The length, S, of the stem is 29.47 inches.

Compact Probe configuration is used with compression fitting process
connections. The length, S, of the stem is 13.1 inches.

12-Inch Extended Probe configuration is used with exceptionally lengthy
flow meter process connections. The length, S, of the stem is 41.47 inch­es.

2-10 IM-240

Use the Correct Insertion Formula

Depending on your flow meter’s process connection, use the applicable

insertion length formula and installation procedure as follows:

• Flow meters with a compression type connection (NPT or flanged)

follow the instructions beginning on page 2-11.

• Flow meters with a packing gland type connection (NPT or flanged)

configured with an insertion tool, follow the instructions beginning on
page 2-13.

• Flow meters with a packing gland type connection (NPT or flanged)

without an insertion tool, follow the instructions beginning on page
2-16.

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Installing Flow Meters with a Compression Connection*

Use the following formula to determine insertion length for flow meters
(NPT and flanged) with a compression process connection. The installa­tion procedure is given on the next page.

Insertion Length Formula

I = S – F – R – t

Where:

I = Insertion length.
S = Stem length – the distance from the center of the sensor head to the base
of the enclosure adapter (S = 29.47 inches for standard probes; S = 13.1
inches for compact; S = 41.47 inches for 12-inch extended).

F = Distance from the raised face of the flange or top of NPT stem housing to

the outside of the pipe wall.
R = Pipe inside diameter  2 for pipes ten inches and smaller.
R = Five inches for pipe diameters larger than ten inches.
t = Thickness of the pipe wall. (Measure the disk cut-out from the tapping
procedure or check a piping handbook for thickness.)

Figure 2-6. Insertion Calculation (Compression Type)

Example:

To install a 241 meter with a standard probe (S = 29.47 inches) into a 14 inch

schedule 40 pipe, the following measurements are taken:
F=3 inches

R=5 inches
t=0.438 inches

The insertion length for this example is 21.03 inches. Insert the stem through
the fitting until an insertion length of 21.03 inches is measured with a ruler.

*All dimensions are in inches

IM-240 2-11

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Caution!

The sensor alignment

pointer must point

downstream, in the

direction of flow.

Warning!

To avoid serious injury,

DO NOT loosen the

compression fitting

under pressure.

Insertion Procedure for Meters with a Compression Connection

2-12 IM-240

Figure 2-7. Flow Meter with Compression Type Fitting

1. Calculate the required sensor probe insertion length.

2. Fully retract the stem until the sensor head is touching the bottom of

the stem housing. Slightly tighten the compression nut to prevent
slippage.

3. Bolt or screw the flow meter assembly into the process connection.

Use Teflon tape or pipe sealant to improve the seal and prevent seiz­ing on NPT styles.

4. Hold the meter securely while loosening the compression fitting. In-

sert the sensor into the pipe until the calculated insertion length, I, is
measured between the base of the enclosure adapter and the top of
the stem housing, or to the raised face of the flanged version. Do
not force the stem into the pipe.

5. Align the sensor head using the sensor alignment pointer. Adjust the

alignment pointer parallel to the pipe and pointing downstream.

6. Tighten the compression fitting to lock the stem in position. When

the compression fitting is tightened, the position is permanent.

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Installing Flow Meters with a Packing Gland Connection*

Use the formula below to determine the insertion depth for flow meters
(NPT and flanged) equipped with an insertion tool. To install, see the next
page for instructions for meters with a permanent insertion tool. For me­ters with a removable insertion tool, see page 2-15.

Insertion Length Formula

I = F + R + t – 1.35

Where:

I = Insertion length.

F = Distance from the raised face of the flange or top of
the process connection for NPT style meters to the top
outside of the process pipe.

R = Pipe inside diameter  2 for pipes ten inches & small­er.

R = Five inches for pipe diameters larger than ten inches.

t = Thickness of the pipe wall. (Measure the disk cut­out from the tapping procedure or check a piping hand­book for thickness.)

Figure 2-8. Insertion Calculation (Meters with Insertion Tool)

Example 1: Flange Style Meters:

To install a 241 Flow Meter into a 14 inch schedule 40 pipe, the following
measurements are taken:

F = 12 inches
R = 5 inches
t = 0.438 inches

The example insertion length is 16.09 inches.

Example 2: NPT Style Meters:

The length of thread engagement on the NPT style meters is also subtracted in
the equation. The length of the threaded portion of the NPT meter is 1.18
inches. Measure the thread portion still showing after the installation and sub­tract that amount from 1.18 inches. This gives you the thread engagement
length. If this cannot be measured use .55 inch for this amount.

F = 12 inches
R = 5 inches

The example insertion length is 15.54 inches.

*All dimensions are in inches.

t = 0.438 inches

IM-240 2-13

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Caution!

The sensor alignment

pointer must point

downstream, in the

direction of flow.

Note

If line pressure is above

500 psig, it could require

up to 25 ft lb of torque to

insert the flow meter.

Do not confuse this with

possible interference

in the pipe.

Insertion Procedure for Flow Meters with Permanent Insertion Tool

2-14 IM-240

Figure 2-9. Flow Meter with Permanent Insertion Tool

1. Calculate the required sensor probe insertion length (see previous

page). Measure from the depth marker arrow down the stanchion and
scribe a mark at the calculated insertion depth.

2. Fully retract the flow meter until the sensor head is touching the bot-

tom of the stem housing. Attach the meter assembly to the two inch
full-port isolation valve, if used. Use Teflon tape or pipe sealant to
improve seal and prevent seizing on NPT style.

3. Loosen the two packing gland nuts on the stem housing of the meter.

Loosen the stem lock bolt adjacent to the sensor alignment pointer.
Align the sensor head using the sensor alignment pointer. Adjust the
alignment pointer parallel to the pipe and pointing downstream. Tighten
the stem lock bolt to secure the sensor position.

4. Slowly open the isolation valve to the full open position. If necessary,

slightly tighten the two packing gland nuts to reduce the leakage
around the stem.

5. Turn the insertion tool handle clockwise to insert the sensor head into

the pipe. Continue until the top of the upper retractor bracket aligns
with the insertion length position scribed on the stanchion. Do not
force the stem into the pipe.

6. Tighten the packing gland nuts to stop leakage around the stem. Do

not torque over 20 ft-lb.

Caution!

The sensor alignment

pointer must point

downstream, in the

direction of flow.

Note

If line pressure is above
500 psig, it could require
up to 25 ft lb of torque to

insert the flow meter.

Do not confuse this with

possible interference

in the pipe.

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Insertion Procedure for Flow Meters with Removable Insertion Tool

Figure 2-10. Flow Meter with Removable Insertion Tool

1. Calculate the required sensor probe insertion length. Measure from

the depth marker arrow down the stanchion and scribe a mark at the
calculated insertion depth.

2. Fully retract the flow meter until the sensor head is touching the bot-

tom of the stem housing. Attach the meter assembly to the two inch
full-port isolation valve, if used. Use Teflon tape or pipe sealant to
improve seal and prevent seizing on NPT style.

3. Remove the two top stem clamp nuts and loosen two stem clamp

bolts. Slide the stem clamp away to expose the packing gland nuts.

4. Loosen the two packing gland nuts. Loosen the stem lock bolt adja-

cent to the sensor alignment pointer. Align the sensor head using the
sensor alignment pointer. Adjust the alignment pointer parallel to the
pipe and pointing downstream. Tighten the stem lock bolt to secure
the sensor position.

5. Slowly open the isolation valve to the full open position. If necessary,

slightly tighten the two packing gland nuts to reduce the leakage
around the stem.

6. Turn the insertion tool handle clockwise to insert the stem into the

pipe. Continue until the top of the upper retractor bracket lines up
with the insertion length mark scribed on the stanchion. Do not force
the stem into the pipe.

IM-240 2-15

Chapter 2 Installation Sierra 240/241Series Instruction Manual

7. Tighten the packing gland nuts to stop leakage around the stem. Do not

torque over 20 ft-lbs.

8. Slide the stem clamp back into position. Torque stem clamp bolts to 15

ft-lbs. Replace the stem clamp nuts and torque to 10-15 ft-lbs.

9. To separate the insertion tool from the flow meter, remove four socket

head cap bolts securing the upper and lower retractor brackets. Remove
the insertion tool.

Installation of Meters with Packing Gland Connection (No Insertion Tool)*

Use the following formula to determine insertion depth for meters with a
packing gland connection (NPT and flanged) without an insertion tool.

Insertion Length Formula

I = S – F – R – t
Where:

I = Insertion length.

S = Stem length – the distance from the cen­ter of the sensor head to the base of the enclo­sure adapter (S = 29.47 inches for standard
probes; S = 41.47 inches for 12 inch extended
probes).

F = Distance from the raised face of the
flange or top of NPT stem housing to the out­side of the pipe wall.

R = Pipe inside diameter  2 for pipes ten
inches & smaller.

R = Five inches for pipe diameters larger than ten inch­es.

t = Thickness of the pipe wall. (Measure the disk cut­out from the tapping procedure or check a piping hand­book for thickness.)

Figure 2-11. Insertion Calculation (Meters without Insertion Tool)

Example:

To install a 241 Flow Meter with a standard probe (S = 29.47) into a 14
inch schedule 40 pipe, the following measurements are taken:

F = 3 inches
R = 5 inches
t = 0.438 inches

The example insertion length is 21.03 inches.

*All dimensions are in inches.

2-16 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Warning!

The line pressure

must be less than

50 psig for installation.

Caution!

The sensor alignment

pointer must point

downstream, in the

direction of flow.

Insertion Procedure for Flow Meters with No Insertion Tool
(Packing Gland Connection)

1. Calculate the required sensor probe insertion length.

2. Fully retract the stem until the sensor head is touching the bottom of the

stem housing. Remove the two top stem clamp nuts and loosen two
stem clamp bolts. Slide the stem clamp away to expose the packing
gland nuts. Loosen the two packing gland nuts.

3. Align the sensor head using the sensor alignment pointer. Adjust the

alignment pointer parallel to the pipe and pointing downstream.

4. Insert the sensor head into the pipe until insertion length, I, is

achieved. Do not force the stem into the pipe.

5. Tighten the packing gland nuts to stop leakage around the stem. Do

not torque over 20 ft-lbs.

6. Slide the stem clamp back into position. Torque stem clamp bolts to

15 ft-lbs. Replace the stem clamp nuts and torque to 10-15 ft-lbs.

IM-240 2-17

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Adjusting Meter Orientation

Depending on installation requirements, you may need to adjust the meter
orientation. There are two adjustments available. The first rotates the posi­tion of the LCD display/keypad and is available on both in-line and inser­tion meters. The second is to rotate the enclosure position. This adjust­ment is only allowed on 240 In-Line meters (contact factory for 241 ad­justments).

Display/Keypad Adjustment (All Meters)

Figure 2-12. Display/Keypad Viewing Adjustment

The electronics boards are electrostatically sensitive. Wear a grounding
wrist strap and make sure to observe proper handling precautions required
for static-sensitive components. To adjust the display:

1. Disconnect power to the flow meter.

2. Loosen the small set screw which secures the electronics enclosure

cover. Unscrew and remove the cover.

3. Loosen the 4 captive screws.

4. Carefully pull the display/microprocessor board away from the meter

standoffs. Make sure not to damage the connected ribbon cable.

5. Rotate the display/microprocessor board to the desired position. Max-

imum turn, two positions left or two positions right (180-degrees).

6. Align the board with the captive screws. Check that the ribbon cable

is folded neatly behind the board with no twists or crimps.

7. Tighten the screws. Replace the cover and set screw. Restore power to

the meter.

2-18 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Enclosure Adjustment (240 Series Only)

Figure 2-13. Enclosure Viewing Adjustment

To avoid damage to the sensor wires, do not rotate the enclosure beyond
180-degrees from the original position. To adjust the enclosure:

1. Remove power to the flow meter.

2. Loosen the three set screws shown above. Rotate the display to the

desired position (maximum 180-degrees).

3. Tighten the three set screws. Restore power to the meter.

IM-240 2-19

Chapter 2 Installation Sierra 240/241Series Instruction Manual

LOOP

POWER

+ -

FREQ

OUT

PULSE

OUT

-- + +

OPTIONAL
BACKLIGHT
POWER

+ -

12 to 36 VDC

25 mA max.

Warning!

To avoid potential electric

shock, follow National Electric

Code safety practices or your

local code when wiring this

unit to a power source and to

peripheral devices. Failure to

do so could result in injury or

death. All wiring procedures

must be performed with the

power off.

Loop Power Flow Meter Wiring Connections

The NEMA 4X enclosure contains an integral wiring compartment with one dual
strip terminal block (located in the smaller end of the enclosure). Two 3/4-inch
female NPT conduit entries are available for separate power and signal wiring.
For all hazardous area installations, make sure to use an agency-approved fitting
at each conduit entry. The cable entry device shall be of a certified flameproof
type, suitable for the conditions of use and correctly installed. The degree of
protection of at least IP66 to EN 60529 is only achieved if certified cable entries
are used that are suitable for the application and correctly installed. Unused ap­ertures shall be closed with suitable blanking elements. If conduit seals are used,
they must be installed within 18 inches (457 mm) of the enclosure.

2-20 IM-240

Figure 2-14. Loop Power Wiring Terminals

Input Power Connections

To access the wiring terminal blocks, locate and loosen the small set
screw which locks the small enclosure cover in place. Unscrew the cover
to expose the terminal block.

DC Power Wiring

Connect 4-20 mA loop power (12 to 36 VDC at 25 mA, 1W max.) to the
+Loop Power and –Loop Power terminals on the terminal block. Torque
all connections to 4.43 to 5.31 in-lbs (0.5 to 0.6 Nm). The DC power wire
size must be 20 to 10 AWG with the wire stripped 1/4 inch (7 mm).

Figure 2-15. DC Power Connections

Sierra 240/241Series Instruction Manual Chapter 2 Installation

4-20 mA Output Connections

The InnovaMass meter has a single 4-20 mA loop. The 4-20 mA loop cur­rent is controlled by the meter electronics. The electronics must be wired
in series with the sense resistor or current meter. The current control elec­tronics require 12 volts at the input terminals to operate correctly.

The maximum loop resistance (load) for the current loop output is de­pendent upon the supply voltage and is given in Figure 2-16. The 4-20
mA loop is optically isolated from the flow meter electronics.

Rload is the total resistance in the loop, including the wiring resistance
(Rload = Rwire + Rsense ). To calculate Rmax, the maximum Rload for the loop,
subtract the minimum terminal voltage from the supply voltage and divide
by the maximum loop current, 20 mA. Thus:

The maximum resistance Rload = Rmax = (Vsupply – 12V) / 0.020 A

Figure 2-16. Load Resistance Versus Input Voltage

IM-240 2-21

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Pulse Output Connections

The pulse output is used for a remote counter. When the preset volume or
mass (defined in the totalizer settings, see page 3-10) has passed the me­ter, the output provides a 50 millisecond square pulse.

The pulse output requires a separate 5 to 36 VDC power supply. The
pulse output optical relay is a normally-open single-pole relay. The relay
has a nominal 200 volt/160 ohm rating. This means that it has a nominal
on-resistance of 160 ohms, and the largest voltage that it can withstand
across the output terminals is 200 volts. However, there are current and
power specifications that must be observed. The relay can conduct a cur­rent up to 40 mA and can dissipate up to 320 mW. The relay output is iso­lated from the meter electronics and power supply.

Figure 2-17. Isolated Pulse Output Using External Power Supply

Figure 2-18. Non-Isolated Pulse Output Using External Power Supply

2-22 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Freq. Out -

Freq. Out +

Freq. Out voltage = +V
Select resistor so that current
through Freq. Out <= 40 mA

Freq. Out voltage = +V
Select resistor so that current through Freq. Out <= 40 mA

Freq. Out +
Freq. Out -

12 to 36 VDC

35 mA max.

Frequency Output Connections

The frequency output is used for a remote counter. It can be scaled to out­put a 1 to 10 kHz signal proportional to mass or volume flow, tempera­ture, pressure or density.

The frequency output requires a separate 5 to 36 VDC power supply;
however, there are current and power specifications that must be ob­served. The output can conduct a current up to 40 mA and can dissipate
up to 200 mW. The output is isolated from the meter electronics and pow­er supply.

Figure 2-19. Isolated Frequency Output Using External Power Supply

Figure 2-20. Non-Isolated Frequency Output Using External Power Supply

Optional Backlight Connection

The loop power meter has an optional backlight connection provided. It is
intended to be powered by a separate 12 to 36 VDC at 35 mA max. power
supply or by the pulse power input. Both options are shown below.

igure 2-21.Backlight Using External Power Supply

IM-240 2-23

F

Chapter 2 Installation Sierra 240/241Series Instruction Manual

RED 1

BLK 1

BLK 2
RED 2
SHLD 1&2

SENSOR V1

VORTEX

GND

PWR

SENSOR V2

SHIELD

Remote Electronics Wiring

The remote electronics enclosure should be mounted in a convenient, easy
to reach location. For hazardous location installations, make sure to ob­serve agency requirements for installation. Allow some slack in the inter­face cable between the junction box and the remote electronics enclosure.
To prevent damage to the wiring connections, do not put stress on the
terminations at any time.

The meter is shipped with temporary strain relief glands at each end of the

cable. Disconnect the cable from the meter’s terminal block inside the

junction box–not at the remote electronics enclosure. Remove both glands
and install appropriate conduit entry glands and conduit. The cable entry
device shall be of a certified flameproof type, suitable for the conditions
of use and correctly installed. The degree of protection of at least IP66 to
EN 60529 is only achieved if certified cable entries are used that are suit­able for the application and correctly installed. Unused apertures shall be
closed with suitable blanking elements. When installation is complete, re­connect each labeled wire to the corresponding terminal position on the

junction box terminal block. Make sure to connect each wire pair’s shield.

Note: incorrect connection will cause the meter to malfunction.

Note: Numeric code in junction box label matches wire labels.

Figure 2-22. Loop Power Volumetric Flowmeter Junction Box Sensor Connections

2-24 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

PRESSURE

TEMPERATURE

RED 2
SHLD 1&2

BLK 2

SHIELD

SHIELD

SENSOR V2

SHIELD

SENSOR V1

VORTEX

BLK 1

PWR

S1

E1

S2

T2

T1

T3

E2 T4

GND

RED 1

P3

P1

P2

P4

SHLD 3&4

SHLD 5&6
RED 6
BLK 6
BLK 5
RED 5

BLK 3
BLK 4
RED 4
RED 3

Figure 2-23. Loop Power Mass Flowmeter Junction Box Sensor Connections

IM-240 2-25

Chapter 2 Installation Sierra 240/241Series Instruction Manual

4-20

mA 3

AC

PWR

IN

4-20

mA 1

24

VDC

OUT

+ - +

4-20

mA 2

- + - +

RS485

RS485

RS485 GND

-

OPTION 2

+

ALARM

2

HOT

PULSE

OUT

NEUT

FREQ

OUT

+ - +

ALARM

1

-+ -

4

OPTION 1

1 2 3 15 2 3

ALARM

3

- + -

4 5

+

-

Warning!

To avoid potential electric shock, follow

National Electric Code safety practices or

your local code when wiring this unit to a

power source and to peripheral devices.

Failure to do so could result in injury or

death. All AC power connections must be

in accordance with published CE direc-

tives. All wiring procedures must be per-

formed with the power off.

Caution!

The AC wire insulation temperature rating

must meet or exceed 85°C (185°F).

High Power Meter Wiring Connections

The NEMA 4X enclosure contains an integral wiring compartment with one
dual strip terminal block (located in the smaller end of the enclosure). Two
3/4-inch female NPT conduit entries are available for separate power and
signal wiring. For all hazardous area installations, make sure to use an agen­cy-approved fitting at each conduit entry. The cable entry device shall be of
a certified flameproof type, suitable for the conditions of use and correctly
installed. The degree of protection of at least IP66 to EN 60529 is only
achieved if certified cable entries are used that are suitable for the applica­tion and correctly installed. Unused apertures shall be closed with suitable
blanking elements. If conduit seals are used, they must be installed within
18 inches (457 mm) of the enclosure.

Input Power Connections

2-26 IM-240

Figure 2-24. AC Wiring Terminals

To access the wiring terminal blocks, locate and loosen the small set
screw which locks the small enclosure cover in place. Unscrew the cover
to expose the terminal block.

AC Power Wiring

The AC power wire size must be 20 to 10 AWG with the wire stripped 1/4
inch (7 mm). The wire insulation temperature must meet or exceed 85°C
(185°F). Connect 100 to 240 VAC (5 W maximum) to the Hot and Neutral
terminals on the terminal block. Connect the ground wire to the safety
ground lug ( ). Torque all connections to 4.43 to 5.31 in-lbs (0.5 to 0.6
Nm). Use a separate conduit entry for signal lines to reduce the possibility of

AC noise interference.

Sierra 240/241Series Instruction Manual Chapter 2 Installation

100 to 240 VAC @ 5 Watts Max.

Chassis screw safety
ground must be used
for proper operation.

4-20

mA 3

4-20

mA 1

DC

PWR

+ - +

4-20

mA 2

- + - +

RS485

RS485

RS485 GND

-

OPTION 2

+

ALARM

2

PULSE

OUT

FREQ

OUT

+ - +

ALARM

1

-+ -

4

OPTION 1

1 2 3 15 2 3

ALARM

3

- + -

4 5

+

-

18 to 36 VDC @ 300 mA Max.

Caution!

The DC wire insulation temperature rating

must meet or exceed 85°C (185°F).

Figure 2-25. AC Power Connections

IM-240 2-27

Figure 2-26. DC Wiring Terminals

DC Power Wiring

The DC power wire size must be 20 to 10 AWG with the wire stripped
1/4 inch (7 mm). Connect 18 to 36 VDC (300 mA, 9 W maximum) to the
+DC Pwr and –DC Pwr terminals on the terminal block.
Torque all connections to 4.43 to 5.31 in-lbs (0.5 to 0.6 Nm).

Figure 2-27. DC Power Connections

Chapter 2 Installation Sierra 240/241Series Instruction Manual

For Hart Communications
signal loop must have a
minimum of 250 ohms load
resistance R

L

RL> 250

mA

Meter

4-20 mA Output Connections

The standard InnovaMass Flow Meter has a single 4-20 mA loop. Two
additional loops are available on the optional communication board. The
4-20 mA loop current is controlled by the meter electronics. The electron­ics must be wired in series with the sense resistor or current meter. The
current control electronics require 12 volts at the input terminals to oper­ate correctly.

The maximum loop resistance (load) for the current loop output is depend­ent upon the supply voltage and is given in Figure 2-26. The 4-20 mA loop
is optically isolated from the flow meter electronics.

Rload is the total resistance in the loop, including the wiring resistance
(Rload = Rwire + Rsense ). To calculate Rmax, the maximum Rload for the loop,
subtract the minimum terminal voltage from the supply voltage and divide
by the maximum loop current, 20 mA. Thus:

The maximum resistance Rload = Rmax = (Vsupply – 12V) / 0.020 A

Figure 2-28. Load Resistance Versus Input Voltage

Figure 2-29. Isolated 4–20 mA Output Using External Power Supply

2-28 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

DC powered meters only

RL >

250 Ohm

DC Power

DC Common

mA Meter

For HART
communications
the signal loop
must have a
minimum of 250
ohms load
resistance.

AC units only

Meter Provided DC

Power

RL>

250 Ohm

24 VDC

24 VDC

For HART
communications
the signal loop
must have a
minimum of 250
ohms load
resistance.

mA Meter

Figure 2-30. Non-Isolated 4–20 mA Output Using Meter Input Power Supply

Figure 2-31. Non-Isolated 4–20 mA Output Using Meter Provided Power Supply

Frequency Output Connections

The frequency output is used for a remote counter. It can be scaled to out­put a 1 to 10 kHz signal proportional to mass or volume flow, tempera­ture, pressure or density.

The frequency output requires a separate 5 to 36 VDC power supply;
however, there are current and power specifications that must be ob­served. The output can conduct a current up to 40 mA and can dissipate
up to 200 mW. The output is isolated from the meter electronics and pow­er supply.

There are three connection options for the frequency output–the first with a
separate power supply (Figure 2-32), the second using the flow meter power
supply (Figure 2-33)(DC powered units only), and the third using the inter­nal 24 VDC power supply (Figure 2-34)(AC powered units only). Use the
first option with a separate power supply (5 to 36 VDC) if a specific voltage
is needed for the frequency output. Use the second configuration if the volt­age at the flow meter power supply is an acceptable driver voltage for the
load connected. (Take into account that the current used by the frequency
load comes from the meter’s power supply). Use the third configuration if
you have an AC powered unit only. In any case, the voltage of the frequen­cy output is the same as the voltage supplied to the circuit.

IM-240 2-29

Chapter 2 Installation Sierra 240/241Series Instruction Manual

AC or DC powered meters

Freq. Out +
Freq. Out -

Freq. Out voltage = +V
Select resistor so that current
through Freq. Out <= 40 mA

PWR
PWR

DC Powered meters only

Freq. Out voltage =

Freq. Out +
Freq. Out -

+ 24 VDC Out

-24 VDC Out

AC units only

Meter provided DC Power

Freq. Out +
Freq. Out -

Freq. Out voltage =

Figure 2-32. Isolated Frequency Output Using External Power Supply

Figure 2-33. Non-Isolated Frequency Output Using Input Power Supply

2-30 IM-240

Figure 2-34. Isolated Frequency Output Using Meter Provided Power Supply

Pulse Output Connections

The pulse output is used for a remote counter. When the preset volume or
mass (defined in the totalizer settings, see page 3-10) has passed the me­ter, the output provides a 50 millisecond square pulse.

The pulse output optical relay is a normally-open single-pole relay. The
relay has a nominal 200 volt/160 ohm rating. This means that it has a
nominal on-resistance of 160 ohms, and the largest voltage that it can
withstand across the output terminals is 200 volts. However, there are cur­rent and power specifications that must be observed. The relay can con­duct a current up to 40 mA and can dissipate up to 320 mW. The relay
output is isolated from the meter electronics and power supply.

There are three connection options for the pulse output–the first with a sepa­rate power supply (Figure 2-30), the second using the flow meter power
supply (Figure 2-31)(DC powered units only), and the third using the inter­nal 24 VDC power supply (Figure 2-32)(AC powered units only). Use the
first option with a separate power supply (5 to 36 VDC) if a specific voltage
is needed for the pulse output. Use the second configuration if the voltage at

Sierra 240/241Series Instruction Manual Chapter 2 Installation

AC or DC powered meters

PWR
PWR

DC Powered meters only

+ 24 VDC Out

- 24 VDC Out

AC units only

Meter provided DC Power

the flow meter power supply is an acceptable driver voltage for the load
connected. (Take into account that the current used by the pulse load comes
from the meter’s power supply). Use the third configuration if you have an
AC powered unit only. In any case, the voltage of the pulse output is the
same as the voltage supplied to the circuit.

Figure 2-35. Isolated Pulse Output Using External Power Supply

Figure 2-36. Non-Isolated Pulse Output Using Input Power Supply

Figure 2-37. Isolated Pulse Output Using Meter Provided Power Supply

IM-240 2-31

Chapter 2 Installation Sierra 240/241Series Instruction Manual

AC or DC powered meters

ALARM
ALARM

DC units only

Alarm Output Connections

One alarm output (Alarm 1) is included on the standard InnovaMass flow
meter. Two or more alarms (Alarm 2 and Alarm 3) are included on the
optional communication board. The alarm output optical relays are nor­mally-open single-pole relays. The relays have a nominal 200 volt/160
ohm rating. This means that each relay has a nominal on-resistance of 160
ohms and the largest voltage that it can withstand across the output termi­nals is 200 volts. However, there are current and power specifications that
must be observed. The relay can conduct a current up to 40 mA and can
dissipate up to 320 mW. The relay output is isolated from the meter elec­tronics and power supply. When the alarm relay is closed, the current
draw will be constant. Make sure to size Rload appropriately.

There are three connection options for the alarm output–the first with a sep­arate power supply (Figure 2-33), the second using the flow meter power
supply (Figure 2-34)(DC powered units only) and the third with the meter
provided power supply (Figure 2-35)(AC powered units only). Use the first
option with a separate power supply (5 to 36 VDC) if a specific voltage is
needed for the alarm output. Use the second configuration if the voltage at
the flow meter power supply is an acceptable driver voltage for the load
connected. (Take into account that the current used by the alarm load comes
from the meter’s power supply). Use the third if you have an AC powered
unit only. In any case, the voltage of the alarm output is the same as the
voltage supplied to the circuit.

The alarm output is used for transmitting high or low process conditions
as defined in the alarm settings (see page 3-9).

2-32 IM-240

Figure 2-38. Isolated Alarm Output Using External Power Supply

Figure 2-39. Non-Isolated Alarm Output Using Internal Power Supply

Sierra 240/241Series Instruction Manual Chapter 2 Installation

+ 24VDC Out

- 24VDC Out

AC units only

Meter provided

DC Power

PRESSURE

TEMPERATURE

RED 2
SHLD 1&2

BLK 2

SHIELD

SHIELD

SENSOR V2

SHIELD

SENSOR V1

VORTEX

BLK 1

PWR

S1

E1

S2

T2

T1

T3

E2 T4

GND

RED 1

P3

P1

P2

P4

SHLD 3&4

SHLD 5&6
RED 6
BLK 6
BLK 5
RED 5

BLK 3
BLK 4
RED 4
RED 3

Figure 2-40. Isolated Alarm Output Using Meter Provided Power Supply

Remote Electronics Wiring

The remote electronics enclosure should be mounted in a convenient, easy
to reach location. For hazardous location installations, make sure to ob­serve agency requirements for installation. Allow some slack in the inter­face cable between the junction box and the remote electronics enclosure.
To prevent damage to the wiring connections, do not put stress on the
terminations at any time.

The meter is shipped with temporary strain relief glands at each end of the

cable. Disconnect the cable from the meter’s terminal block inside the

junction box–not at the remote electronics enclosure. Remove both glands
and install appropriate conduit entry glands and conduit. The cable entry
device shall be of a certified flameproof type, suitable for the conditions
of use and correctly installed. The degree of protection of at least IP66 to
EN 60529 is only achieved if certified cable entries are used that are suit­able for the application and correctly installed. Unused apertures shall be
closed with suitable blanking elements. When installation is complete, re­connect each labeled wire to the corresponding terminal position on the

junction box terminal block. Make sure to connect each wire pair’s shield.

Note: incorrect connection will cause the meter to malfunction.

IM-240 2-33

Figure 2-41. High Power Flow Meter Junction Box Sensor Connections

Note: Numeric code in junction box label matches wire labels.

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

R = 1000 ohm

Red

Red

Black Black

Optional Input Electronics Wiring

The meter has two optional input wiring terminals. These can be used to
input a Remote or Second RTD input in the case of an Energy Monitoring
meter, for the input of a Remote Pressure Transducer, to pass a Contact
Closure or for a Remote Density measurement to name a few. In any
case, the wiring diagram will be included with the meter if any of the op­tions are specified. Otherwise, the optional terminal blocks will be left
blank and non functional.

Optional Energy EMS RTD Input Wiring

Figure 2-42.Optional Energy EMS RTD Input Wiring

The recommended customer supplied second RTD is a Class A 1000 ohm
4-wire platinum RTD. If a second RTD is not being used, then the factory
supplied 1000 ohm resistor needs to be installed in its place.

2-34 IM-240

Sierra 240/241Series Instruction Manual Chapter 2 Installation

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

Power

Ext. 4-20 mA
Input Device

External

+

-

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

Ext. 4-20 mA
Input Device

+ DC PWR

- DC PWR

DC PWR

DC COMMON

DC powered meter only.

Optional External 4-20 mA Input Wiring

The meter is set to have Option 1 used for the external input. Program­ming menus that pertain to the optional 4-20 mA input are located in the
Hidden Diagnostics Menu in Chapter 5.

Figure 2-43. External 4-20 mA Input Wiring - External Power Supply

Follow the above diagram to wire the external 4-20 mA input into the
flow meter using an external power supply.

Figure 2-44. External 4-20 mA Input Wiring - DC Powered Meter

Follow the above diagram to wire the external 4-20 mA input into the
flow meter using power supplied to the input of a DC powered meter.

IM-240 2-35

Chapter 2 Installation Sierra 240/241Series Instruction Manual

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

Ext. 4-20 mA
Input Device

+ 24 VDC OUT

- 24 VDC OUT

AC units only. Meter

provided DC power.

Option 2Option 1

1 2 3 4 5 1 2 3 4 5

Figure 2-45. External 4-20 mA Input Wiring - AC Powered Meter

Follow the above diagram to wire the external 4-20 mA input into the
flow meter using power from the 24 VDC output of an AC powered me­ter.

Optional Contact Closure Input Wiring

Figure 2-46. Optional Contact Closure Input Wiring

Follow the above diagram to wire an external switch input into the flow
meter. The meter is configured to have Option 1 used for the external in­put. If the above switch is used to remotely reset the totalizer a pushbut­ton switch with a momentary contact closure is recommended.

2-36 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Chapter 3 Operating Instructions

After installing the InnovaMass mass vortex flow meter, you are
ready to begin operation. The sections in this chapter explain the
display/keypad commands, meter start-up and programming. The
meter is ready to operate at start up without any special pro­gramming. To enter parameters and system settings unique to
your operation, see the following pages for instructions on using
the setup menus.

Flow Meter Display/Keypad

The flow meter’s digital electronics allow you to set, adjust and
monitor system parameters and performance. A full range of
commands are available through the display/keypad. The LCD
display gives 2 x 16 characters for flow monitoring and pro­gramming. The six push-buttons can be operated with the enclo­sure cover removed. Or, the explosion-proof cover can remain
in place and the keypad operated with a hand-held magnet posi­tioned at the side of the enclosure as shown in the illustration at
the left.

Figure 3-1. Flow Meter Display/Keypad

IM-240 3-1

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Note

Starting the flow meter

or pressing EXIT will

always display the

Run Mode screens.

Start-Up

To begin flow meter operation:

1. Verify the flow meter is installed and wired as described in Chapter 2.

2. Apply power to the meter. At start up, the unit runs a series of self-

tests that check the RAM, ROM, EPROM and all flow sensing com­ponents. After completing the self-test sequence, the Run Mode
screens appear.

3. The Run Mode displays flow information as determined by system

settings. Some screens depicted on the next page may not be dis­played based on these settings. Press the  arrow keys to view
the Run Mode screens.

4. Press the ENTER key from any Run Mode screen to access the Setup

Menus. Use the Setup Menus to configure the meter’s multi­parameter features to fit your application.

3-2 IM-240

Setup

Menus

Password

Mass Flow

Rate

Volume

Flow Rate

Temperature

Pressure

Density

Total

Alarm 1

Status

Fluid

ENTER

Date & Time

Alarm 2

Status

Alarm 3

Status

Run Mode

Screens

Energy

*

ENTER

Press Exit to return

to Run Mode

Use

keys to access
each item

*

Energy EMS

Meters Only

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

IM-240 3-3

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Output

Menu

Display

Menu

Alarms

Menu

Totalizer #1

Menu

Fluid

Menu

Units

Menu

Time & Date

Menu

Diagnostics

Menu

Calibration

Menu

Password

Menu

Password

4-20 mA

ENTER

Output 2

Output 3

Modbus

Units

Cycle Time

(sec)

Number of

Digits

Display TC

(sec)

Mf Vf Te

Pr De T

A1 A2 A3

Fl Dt *E

Relay

Alarm 1

Relay

Alarm 2

Relay

Alarm 3

Alarm Log

Clear Alarm

Log

Totaling

Unit per

Pulse

Reset Total

Flowing

Fluid

STD Temp

(F)

STD Press

(PSIA)

NORM

Temp (C)

NORM

Press (KPA)

Mass Flow

Unit

Volume

Flow Unit

Temperature

Unit

Density

Unit

Pressure

Unit

Set Time

Set Date

Sim Vor

Freq

Sim Temp 1, 2

Sim Pressure

Highest

Velocity

Highest

Temp 1, 2

Highest

Pressure

Lowest

Int Temp

Meter Size

or Pipe ID

Meter Factor

Vortex Coef

Ck

Low Flow

Cutoff

Serial

Number

Set

Password

Mass Flow

Rate

Volume

Flow Rate

Temperature

Pressure

Density

Total

Alarm 1

Status

Fluid

ENTER

Date & Time

Alarm 2

Status

Alarm 3

Status

Run Mode

Screens

Setup Menus

Atm. Press

14.6959

Gauge

Pressure

(Abs/Gauge)

Baud Rate

Modbus

Order

Comm

Protocol

Totalizer #2

Menu

Totaling

Reset Total

Energy

Menu

Loc in Sent

Flow

Yes / No

Heating System

Yes / No

% Returned

Energy

*

*

*

*

Energy EMS

Meters Only

Address

Scaled

Frequency

Output 1

4-20 mA

4-20 mA

* Energy

Unit

System Log

Clear Sys

Log

Highest

Int Temp

Using the Setup Menus

3-4 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Programming the Flow Meter

1. Enter the Setup Menu by pressing the ENTER key until prompted for a password. (All

outputs are disabled while using the Setup Menus.)

2. Use the  keys to select the password characters (1234 is the factory-set

password). When the password is correctly displayed, press ENTER to continue.

3. Use the Setup Menus described on the following pages to customize the multi-

parameter features of your InnovaMass Flow Meter. (The entire lower display line is
available for entering parameters.) Some items depicted in the graphic on the
preceding page may not be displayed based on flow meter configuration settings

4. To activate a parameter, press ENTER. Use the  keys to make selections. Press

ENTER to continue. Press EXIT to save or discard changes and return to Run Mode.

5. Program the UNITS menu first because later menus will be based on the units

selected.

IM-240 3-5

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Use
keys to access menus

Output

Menu

4-20 mA Output 1

More >

ENTER

Run Mode

* see below

* see below

4-20 mA Output 2

More >

***see

below

***see

below

4-20 mA Output 3

More >

***see

below

< Measure >

None
Mass

Volume

Temp 1,2

Press

Density

***

Energy

< Measure >

None
Mass

Volume

Temp 1,2

Press

Density

***

Energy

< Measure >

None
Mass

Volume

Temp 1,2

Press

Density

***

Energy

< 4 mA = xxxx >

xxxx

< 4 mA = xxxx >

xxxx

< 4 mA = xxxx >

xxxx

< 20mA = xxxx >

xxxx

< 20mA = xxxx >

xxxx

< 20mA = xxxx >

xxxx

< Time Const (Sec)

xxxx

< Time Const (Sec)

xxxx

< Time Const (Sec)

xxxx

Modbus Order

0-1:2-3

1-0:3-2

2-3:0-1

Comm Protocol

Modbus RTU

(None1, None2,

Odd, Even)

Baud Rate

19200

Address

1

** see below

** see below

** see below

** see below

*

- Physical Layer not available on Two
Wire Mass – Accessible via HART

**

- Modbus not available on Two
Wire Mass

- Energy available on EMS meters only

***

Scaled Frequency

More >

Modbus Units

(Internal/Display)

** see below

< Max. Frequency >

xxxxx

< Measure >

None
Mass

Volume

Temp 1,2

Press

Energy

< 0 Hz = (units) >

xxxx

< Max Hz = (units) >

xxxx

< Time Const (Sec)

xxxx

3-2:1-0

Density

***

Output Menu

3-6 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Example for Setting an Output

The following shows how to set Output 1 to measure mass flow with 4 mA = 0 lb/hr and 20 mA = 100 lb/hr with
a time constant of 5 seconds. (All outputs are disabled while using the Setup Menus.)

First, set the desired units of measurement:

1. Use  keys to move to the Units Menu (see page 3-12).

2. Press  key until Mass Flow Unit appears. Press ENTER.

3. Press  key until lb appears in the numerator. Press  key to move the underline cursor to the
denominator. Press the  key until hr appears in the denominator. Press ENTER to select.

4. Press  key until Units Menu appears.

Second, set the analog output:

1. Use  keys to move to the Output Menu.

2. Press the  key until 4-20 mA Output 1 appears.

3. Press  key to access Measure selections. Press ENTER and press the  key to select Mass. Press ENTER.

4. Press  key to set the 4 mA point in the units you have selected for mass of lb/hr. Press ENTER and
use  keys to set 0 or 0.0. Press ENTER.

5. Press  key to set the 20 mA point. Press ENTER and use  keys to set 100 or 100.0. Press ENTER.

6. Press  key to select the Time Constant. Press ENTER and use  keys to select 5. Press ENTER.

7. Press the EXIT key and answer YES to permanently save your changes.

IM-240 3-7

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Display

Menu

Cycle Time (sec)

0

ENTER

Run Mode

Number of Digits

2

MF Vf Te Pr De T

Y or N

A1 A2 A3 Fl Dt E

Y or N

If Cycle Time is set to zero, manual advance is required

Used to set the number of digits displayed after the decimal point

MF = Mass Flow
Vf = Volume Flow

Te = Temperature
Pr = Pressure
De = Density
T = Total

A1 = Alarm 1 Status
A2 = Alarm 2 Status
A3 = Alarm 3 Status
Fl = Fluid
Dt = Density

For each parameter:

Select Yes to view parameter in Run Mode
Select No to hide parameter in Run Mode

Display TC (sec)

1

TC = Display Time constant, used to smooth display

*

E = Energy

* Energy EMS Meters Only

Use
keys to access menus

Display Menu

Use the Display Menu to set the cycle time for automatic screen sequencing used in the Run
Mode, change the precision of displayed values, smooth the values or enable or disable each item
displayed in the Run Mode screens.

Example for Changing a Run Mode Display Item

The following shows how to remove the temperature screen from the Run Mode screens. Note: all outputs
are disabled while using the Setup Menus.

1. Use  keys to move to the Display Menu.

2. Press  key until Mf Vf Pr Te De T appears.

3. Press ENTER to select. Press  key until the cursor is positioned below Te.

4. Press  key until N appears. Press ENTER to select.

5. Press EXIT and then ENTER to save changes and return to the Run Mode.

3-8 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Password

ENTER

Use
keys to access menus

Alarms

Menu

Relay Alarm 1

More >

ENTER

Run Mode

Relay Alarm 2

More >

Relay Alarm 3

More >

Alarm LOG

xx Files (ENTER)

Clear Alarm LOG?

YES or NO

<Measure> units

xxxx

xxxx

xxxx

Alarm File

Time

Date

(Press EXIT to return

to Alarm LOG)

* see below

Physical Layer does not exist on Two Wire
Mass - Accessible via HART

<Measure>

None
Mass

Volume

Temp 1,2

Press

Density

**

Energy

<Measure>

None
Mass

Volume

Temp 1,2

Press

Density

**

Energy

<Measure>

None
Mass

Volume

Temp 1,2

Press

Density

**

Energy

<Mode>

None
HIGH Alarm (>)
LOW Alarm (<)

<Mode>

None
HIGH Alarm (>)
LOW Alarm (<)

<Mode>

None
HIGH Alarm (>)
LOW Alarm (<)

<Measure> units

<Measure> units

*

** Energy EMS Meters Only

Alarms Menu

Example for Setting an Alarm

The following shows how to set Relay Alarm 1 to activate if the mass flow rate is greater than 100 lb/hr. You can
check the alarm configuration in the Run Mode by pressing the  keys until Alarm [1] appears. The lower line
displays the mass flow rate at which the alarm activates. Note: all outputs are disabled while using the Setup Menus.

First, set the desired units of measurement:

1. Use  keys to move to the Units Menu (see to page 3-12).

2. Press  key until Mass Flow Unit appears. Press ENTER.

3. Press  key until lb appears in the numerator. Press  key to move the underline cursor to the

4. Press  key until Units Menu appears.

Second, set the alarm:

1. Use  keys to move to the Alarms Menu.

2. Press the  key until Relay Alarm 1 appears.

3. Press  key to access Measure selections. Press ENTER and use the  key to select Mass. Press ENTER.

4. Press  key to select the alarm Mode. Press ENTER and use  key to select HIGH Alarm. Press ENTER.

5. Press  key to select the value that must be exceeded before the alarm activates. Press ENTER and use

6. Press the EXIT key to save your changes. (Alarm changes are always permanently saved.)

denominator. Press the  key until hr appears in the denominator. Press ENTER to select.

 keys to set 100 or 100.0. Press ENTER.

(Up to three relay alarm outputs are available depending on meter configuration.)

IM-240 3-9

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Use
keys to access menus

Totalizer

Menu

Totaling
Inactive

Mass

Volume

ENTER

Run Mode

(unit) / Pulse

xxxx

Reset Total ?

YES or NO

Example:

Maximum flow rate = 600 gallons per minute

(600 gallons per minute = 10 gallons per second)

If unit per pulse is set to 600 gallons per pulse,

the totalizer will pulse once every minute.

If unit per pulse is set to 10 gallons per pulse,

the totalizer will pulse once every second.

Energy

Totalizer #1 Menu

Use the Totalizer Menu to configure and monitor the totalizer. The totalizer output is a 50 millisecond
(.05 second) positive pulse (relay closed for 50 milliseconds). The totalizer cannot operate faster than
one pulse every 100 millisecond (.1 second). A good rule to follow is to set the unit per pulse value
equal to the maximum flow in the same units per second. This will limit the pulse to no faster than
one pulse every second.

Example for Setting the Totalizer

The following shows how to set the totalizer to track mass flow in kg/sec. (All outputs are disabled while using
the Setup Menus.)

First, set the desired units of measurement:

1. Use  keys to move to the Units Menu (see to page 3-12).

2. Press  key until Mass Flow Unit appears. Press ENTER.

3. Press  key until kg appears in the numerator. Press  key to move the underline cursor to the
denominator. Press the  key until sec appears in the denominator. Press ENTER to select.

4. Press  key until Units Menu appears.

Second, set the pulse output:

1. Use  keys to move to the Totalizer Menu.

2. Press the  key until Totaling appears.

3. Press ENTER and press the  key to select Mass. Press ENTER.

4. Press  key to set the pulse output in the units you have selected for mass flow of kg/sec. Press

5. To reset the totalizer, press  key until Reset Total? appears. Press ENTER and the  key to reset the

6. Press the EXIT key and answer YES to permanently save your changes.

ENTER and use  keys to set the pulse value equal to the maximum flow in the same units per

second. Press ENTER.

totalizer if desired. Press ENTER.

3-10 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Password

ENTER

Use

keys to access menus

Totalizer

Menu

ENTER

Run Mode

Totaling
Inactive

Mass
Volume
Energy

Reset Total ?

YES or NO

Totalizer #2 Menu

Use the Totalizer #2 to Monitor Flow or Energy. Note that Totalizer #2 does not operate a relay, it is

for monitoring only.

IM-240 3-11

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Use
keys to access menus

Energy

Menu

Loc in Sent

Flow

Yes or No

ENTER

Run Mode

Heating

System

Yes or No

% Returned

xxx

Fluid

Meter Location

Second RTD

Measurement

Water

“Sent” Flow Line

“Return Flow Line

Change in Energy

Water

“Return” Flow Line

“Sent” Flow Line

Change in Energy

Water

“Sent” Flow Line

None

Outgoing Energy

Steam

“Sent” Flow Line

“Return” Flow Line

(condensate)

Change in Energy
Steam

“Sent” Flow Line

None

Outgoing Energy

Energy Menu – For EMS Energy Meters Only

Configuration:

There are several possibilities regarding the measurement of water or steam energy given the location
of the meter and the use of a second RTD. The table below summarizes the possibilities:

As above, you must properly configure the meter in the Energy Menu.

table

1. Loc in Sent Flow? Select Yes or No based on where the meter is located. Refer to the above

2. Heating System? Select Yes for a hot water system used for heating. Select No for a chilled

water system used for cooling. Always select Yes for a steam system.

3. % Returned. Select a number between 0% and 100%. Estimate the amount of water that returns.

It is usually 100%, or can be less than 100% if historical data shows the amount of makeup water
used. If a second RTD is not used, set to 0%. When 0% is selected, the energy calculation
represents the outgoing energy only (no return energy is subtracted). NOTE: the meter ships

from the factory assuming 0% return and has a 1000 ohm resistor installed in the RTD #2
wiring location. This needs to be removed if the meter is to be used in a manner other than
with 0% return and with the customer supplied RTD in its place.

3-12 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Password

ENTER

Use
keys to access menus

Fluid

Menu

Flowing Fluid

Liquids >

Goyal-Dorais >

API 2540 >

Nat Gas AGA8 >

Real Gas >

Other Gas >

ENTER

Run Mode

< Liquid

Water

Ammonia

Chlorine

STD Press (PSIA)

xxxx

NORM Temp (C)

xxxx

NORM Press (KPA)

xxxx

STD Temp (F)

xxxx

Other Liquids >

< Mole Weight >

xxxx

< CRIT PRESS >

xxxx

< CRIT TEMP >

xxxx

< CRIT Z >

xxxx

< AL >

xxxx

< BL
xxxx

< Density @ 60F >

xxxx

< K0 >

xxxx

< K1 >

xxxx

< AL >

xxxx

< BL
xxxx

< Real Gas

Steam T & P Comp

< Specific Gravity >

xxxx

< MoleFract N2 >

xxxx

<MoleFract CO2>

xxxx

<Ref Temp(F)>

xxxx

< Ref Press(PSIA)

xxxx

< Specific Gravity >

xxxx

< Compress (Z) >

xxxx

< Viscosity

xxxx

Air

Argon

Ammonia

CO

CO2

Helium

Hydrogen

Methane
Nitrogen

Oxygen

< Density >

xxxx

< AL >

xxxx

< BL
xxxx

Select “Steam T & P Comp” for VT and

in the run mode screens.

“Sat Steam T Comp” for the fluid type

VTP models. The VT model will display

For a V model in any fluid, enter nominal operating temperature and
pressure as simulated values in the diagnostics menu.

Liquified Gas >

< Liquified Gas

Carbon Dioxide

Nitrogen

Hydrogen

Oxygen

Nitrous Oxide

Argon

Propane

Fluid Menu

Use the Fluid Menu to configure the flow meter for use with common gases, liquids and steam. Your

flow meter is pre-programmed at the factory for your application’s process fluid.

Reference Richard W. Miller, Flow Measurement Engineering Handbook (Third Edition, 1996),

page 2-75 for definition and use of the Goyal-Doraiswamy equation and page 2-76 for the

definition and use of the API 2540 equation. Also, see Appendix C for Fluid Calculation

equations.

The units of measurement used in the Fluid Menu are preset and are as follows:

IM-240 3-13

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Mole Weight = lbm/(lbm·mol), CRIT PRESS = psia, CRIT TEMP = °R, Density = Kg/m3 and
Viscosity = cP (centipoise).

3-14 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Energy Unit
BTU, MBTU, MMBT, MWHr

Password

ENTER

Use
keys to access menus

Units
Menu

Mass Flow Unit

lb, Ston, Lton, gram
kg, Mton, scf, nm3

/

ENTER

Run Mode

Ston = Short Ton = 2000 lb
Lton = Long Ton = 2240 lb
Mton = Metric Ton = 1000 kg

sec, min, hr, day

Volume Flow Unit

gal, MilG, ImpG, bbl

lit, MilL, m3, ft3

Temperature Unit

Deg F, Deg C, Kelvin, Rankine

Pressure Unit

psi, inH2O, ftH2O, mmH2O, in HG,
mmHG, ATM, Bar, mBar, gm/cm2, kg/cm2,

Pascal, KiloPa, MegaPa, Torr, 4inH20, 4mmH2O

Density Unit

lbm/ft3, kg/m3, gm/cc, lbm/gal,

gm/mlit, kg/lit, gm/lit, lbm/in3

MilG = Million gallons

= Imperial gallon = 1.20095 US gallons

bbl = barrels = 42 US gallons

MilL = Million liters

4inH2O and 4mmH2O are based on

water at 4 degrees C.

Gauge Pressure Unit

Absolute / Gauge

Transducer reads in Absolute – if Gauge is desired

then atmospheric pressure at meter is needed

Atm. Pressure

14.6959

Menu is only activated if Gage Pressure is chosen
Enter the value in PSIA

ImpG

/

sec, min, hr, day

kWHr, HPHr, MCal,MJ

/

sec, min, hr, day

MBTU = Thousand BTU
MMBTU = Million BTU

Units Menu

Use the Units Menu to configure the flow meter with the desired units of measurement. (These

are global settings and determine what appears on all screens.

IM-240 3-15

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Use
keys to access menus

Time & Date

Menu

Set Time

xx:xx:xx

ENTER

Run Mode

Set Date

xx/xx/xx

Time & Date Menu

Use the Time and Date Menu to enter the correct time and date into the flow meter’s

memory. The parameters are used in the Run Mode and the alarm and system log
files.

Note: Time is displayed in AM/PM format, but military format is used to set the time.
For example, 1:00 PM is entered as 13:00:00 in the Set Time menu.

Example for Setting the Time

How to set the time to 12:00:00. You can check the time in the Run Mode by pressing the  keys
until the Time & Date screen appears. Note: all outputs are disabled while using the Setup Menus.

1. Use  keys to move to the Time and Date Menu.

2. Press  key until Set Time appears. Press ENTER.

3. Press  key until 1 appears. Press  key to move the underline cursor to the next digit.
Press the  key until 2 appears. Continue sequence until all desired parameters are en­tered. Press ENTER to return to the Time and Date Menu.

4. Press EXIT to return to the Run Mode.

3-16 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Password

ENTER

Use
keys to access menus

Diagnositcs

Menu

Sim Vor Freq

xxx

ENTER

Run Mode

Sim Temp 1, 2

xxx

Sim Pressure

xxx

Highest Velocity

xxx

Highest Temp 1, 2

xxx

Highest Pressure

xxx

System LOG

xx Files (ENTER)

Clear Sys LOG?

YES or NO

SysLog File #xx System Log File

Time

Date

Press EXIT to return

to System LOG

Momentarily displayed

Use Left and Right
arrows to access all
system log files

Simulate Vortex

Frequency (Hz)

* Simulate Temperature

* Simulate Pressure

* Highest Recorded

Velocity

* Highest Recorded

Temperature

* Highest Recorded

Pressure

* The unit of measure of the displayed value is the

same as the unit configured for the flow meter.

For a V model in any fluid, enter nominal operating temperature and
pressure as simulated values in the diagnostics menu.

Highest Int Temp

xx

Lowest Int Temp

xx

* Highest Electronics

Temperature

* Lowest Electronics

Temperature

Diagnostics Menu

Use the Diagnostics Menu to simulate operation and review the system files. The system log files
contain time/date stamped messages including: power on, power off, programming time outs,
parameter faults, incorrect password entry and other various information relative to system
operation and programming.

The simulated inputs are for testing the meter to verify that the programming is correct. They are
also used to enter nominal operating temperature and pressure for the V only model. Simulated
vortex frequency allows you to enter any value for the sensor input in Hz. The meter will
calculate a flow rate based on the corresponding value and update all analog outputs (the
totalizer display and output is not affected by a simulated frequency). The simulated pressure
and temperature settings work the same way. The meter will output these new values and will use
them to calculate a new density for mass flow measurement. Note: when your diagnostic work is
complete, make sure to return the values to zero to allow the electronics to use the actual
transducer values. For the V only model keep the temperature and pressure at nominal operating
conditions.

IM-240 3-17

Chapter 3 Operation Sierra 240/241 Series Instruction Manual

Password

ENTER

Use

keys to access menus

Calibration

Menu

Meter Size

or Pipe ID

ENTER

Run Mode

Meter Factor

xxxx

Vortex Coef Ck

xx

Low Flow Cutoff

xx

Serial Number

xxxxxxxxx

Series M22 – meter size
Series M23 – pipe internal diameter (inches)

Meter calibration constant
Series M22 – pulses / ft

3

Series M23 – pulses / ft

Adaptive filter setting

Low Flow Cutoff

setting displayed

in volumetric flow

units (view only)

< Vol (xxx/xxx) >

xxx

< Mass (xxx/xxx)

xxx

Low Flow Cutoff

setting displayed

in mass flow

units (view only)

If the meter display indicates a temperature or pressure fault, a substitute value can be entered to
allow flow calculations to continue at a fixed value until the source of the fault is identified and
corrected. The units of measure of the displayed values are the same as the units configured

for the flow meter.

Calibration Menu

The Calibration Menu contains the calibration coefficients for the flow meter. These values
should by changed only by properly trained personnel. The Vortex Coef Ck and Low Flow Cutoff
are set at the factory. Consult the factory for help with these settings if the meter is showing
erratic flow rate.

3-18 IM-240

Sierra 240/241 Series Instruction Manual Chapter 3 Operation

Password

ENTER

Use
keys to access menus

Password

Menu

Set Password

1234

ENTER

Run Mode

Password Menu

Use the Password Menu to set or change the system password. The factory-set password
is 1234.

IM-240 3-19

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

LOOP

POWER

+ -

FREQ

OUT

PULSE

OUT

-- + +

OPTIONAL

BACKLIGHT

POWER

+ -

R load,
250 ohm
minimum

+

_

DC

Power

Supply

Remote Connection

for Communicator

Current

Meter

Field Connection

for Communicator

Vortex Meter

Warning!

Place controls in manual

mode when making

configuration changes to

the vortex meter.

Chapter 4 Serial Communications

HART Communications

The HART Communications Protocol (Highway Addressable
Remote Transducer Protocol) is a bidirectional digital serial
communications protocol. The HART signal is based on the Bell
202 standard and is superimposed on 4-20 mA Output 1. Point-to­point (analog / digital) and multi-drop (digital only) modes are
supported.

Wiring

The diagrams below detail the proper connections required for
HART communications:

Loop Powered Meter Wiring

Figure 4-1.Loop Powered Meter Wiring (HART)

IM-240 4-1

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

R load,
250 ohm
minimum

+

_

DC
Power
Supply

Remote Connection

for Communicator

Field Connection

for Communicator

Current

Meter

Vortex Meter

4-20

mA 3

4-20

mA 1

DC PWR

+ - +

4-20

mA 2

- + - +

RS485

RS485

RS485 GND

-

OPTION 2

+

ALARM

2

PULSE

OUT

FREQ

OUT

+ - +

ALARM

1

-+ -

4

OPTION 1

1 2 3 15 2 3

ALARM

3

- + -

4 5

+

-

R load,

250 ohm

minimum

Remote Connection

for Communicator

Field Connection

for Communicator

Current

Meter

Vortex Meter

4-20

mA 3

AC

PWR

IN

4-20

mA 1

24

VDC

OUT

+ - +

4-20

mA 2

- + - +

RS485

RS485

RS485 GND

-

OPTION 2

+

ALARM

2

HOT

PULSE

OUT

NEUT

FREQ

OUT

+ - +

ALARM

1

-+ -

4

OPTION 1

1 2 3 15 2 3

ALARM

3

- + -

4 5

+

-

DC Powered Meter Wiring

Figure 4-2.DC Powered Meter Wiring (HART)

AC Powered Meter Wiring

Figure 4-3.AC Powered Meter Wiring (HART)

4-2 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Multi-Point Meter Wiring

Figure 1 Multi-point (digital only) loop power model shown

To activate Multi-drop mode, put a device ID of 1 to 15 in the “Dev id”
menu. ( 0 is point to point mode ) This fixed the 4-20 ma. output to 4 ma.
Typically DC power for the loop is provided by an external power supply.
(isolated power on AC and DC models) Consult your HART modem
manufactures documentation for specific wiring requirements.

IM-240 4-3

Online Menu

1 Device Setup

2 Process Variables

3 PV is
4 PV
5 AO1 Out
6 PV % rnge
7 Alrm Status

8 Diagnostics

9 Calibration Review

1 Display Unit

2 Analog Output

3 External Loop

4 Meter Display

5 Alarm Setup

6 Totalizer

7 Fluid Menu

8 Energy Setup

9 Device Menu

Diagnostics

Sensor Cal

Review

1 Mass flo unit
2 Vol unit
3 Temp unit
4 Energy flo unit
5 Line press unit
6 Dens unit
7 Totalizer units
8 Std & Norm Cond

1 Disp Cycle
2 Disp Digits
3 Disp Damping
4 Init Displ.
5 Disp Show/Hide

1 Alarm Status
2 Alarm 1 Setup
3 Alarm 2 Setup
4 Alarm 3 Setup
5 Records in Log
6 Read Alarm Log
7 Alarm Log Clear

1 Total
2 Totalize
3 Amount/Pulse
4 Total 2
5 Totalize 2
6 Clear Totalizer

1 Mass Flo
2 Vol
3 Temp
4 Temp 2
5 Delta Temp.
6 Energy flo
7 Press
8 Dens
9 Totl
Total 2

1 K Factor
2 Ck Value
3 Lo Flo Cutoff
4 RTD1 Ro
5 RTD1 alpha
6 RTD1 beta
7 RTD2 Ro
8 RTD2 alpha
9 RTD2 beta
Pcal B00, Pcal B01
Pcal B02, Pcal B10
Pcal B11, Pcal B12
Pcal B20, Pcal B21
Pcal B22
Ref. Resistance
Internal Temp. Cal
Cal current
Flow 1
Deviation 1
Flow 2
Deviation 2
Flow 3
Deviation 3
Flow 4
Deviation 4
Flow 5
Deviation 5
Flow 6
Deviation 6
Flow 7
Deviation 7
Flow 8
Deviation 8
Flow 9
Deviation 9
Flow 10
Deviation 10

1 Alrm 1 var
2 Alrm 1 typ
3 Alrm 1 set pt

1 Alrm 2 var
2 Alrm 2 typ
3 Alrm 2 set pt

1 Alrm 3 var
2 Alrm 3 typ
3 Alrm 3 set pt

1 Norm Temp
2 Norm Press
3 Std Temp
4 Std Press

To Analog Output Menu

To Fluid Menu

From Sensor Cal Menu,

Calibration Review

1 External Input
2 Set Ext. 4 mA
3 Set Ext. 20 mA

Inactive
Temp1
Temp 2
Pressure

1 Meter Location
2 Heating or Cooling
3 % Return

To Diagnostics Menu

To Sensor Cal Menu

To Review Menu

To Diagnostics Menu

1 Date
2 h
3 min
4 s
5 Password
6 Meter Size
7 Dev id
8 Tag
9 Descriptor
Message
Final assy num
Poll adr
Num req preams
Config Code
Compile Date
Compile Time
Signal Board Version
Hardware rev
Software rev
Master reset

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

HART Commands with the DD Menu

4-4 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

1 Fix Analog Output
2 Trim Analog Output
3 Configure AO1
4 PV is
5 PV AO1 Out
6 PV % rnge
7 Configure AO2
8 SV is
9 SV AO2 Out
SV % rnge
Configure AO3
TV is
TV AO
TV % rnge
Configure AO4
QV is
QV AO
QV % rnge

1 PV is
2 PV AO1 Out
3 PV
4 PV % rnge
5 Apply values
6 PV Rnge unit
7 PV LRV
8 PV URV
9 PV AO1 Lo end pt
PV AO1 Hi end pt
PV AO1 Added damp

1 SV is
2 SV AO2 Out
3 SV
4 SV % rnge
5 Apply values
6 SV Rnge unit
7 SV LRV
8 SV URV
9 SV AO2 Lo end pt
SV AO2 Hi end pt
SV AO2 Added damp

1 TV is
2 TV AO
3 TV
4 TV % rnge
5 Apply values
6 TV Rnge unit
7 TV LRV
8 TV URV
9 TV AO3 Lo end pt
TV AO3 Hi end pt
TV AO3 Added damp

1 QV is
2 QV AO
3 QV
4 QV % rnge
5 Apply values
6 QV Rnge unit
7 QV LRV
8 QV URV
9 QV AO1 Lo end pt
QV AO1 Hi end pt
QV AO1 Added damp

From Online Menu

Analog Output Menu

HART Commands with the DD Menu Continued

IM-240 4-5

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

1 Fluid
2 Fluid Type

Water
Ammonia
Chlorine

From Online Menu

Fluid Menu

Liquid
Other Liquid
Goyal-Dorais
API-2540
Nat Gas AGA8
Real Gas
Other Gas
Liquified Gas

Other Liquid Density
Viscosity Coef AL
Viscosity Coef BL

Mol Weight
Crit Press
Crit Temp
Compressibility
AL
BL

Density @ 60F
API K0
API K1
API AL
API BL

AGA Ref Temp
AGA Ref Press
Specific Gravity
Mole Fract N2
Mole Fract CO2

Steam
Air
Argon
Ammonia
CO
CO2
Helium
Hydrogen
Methane
Nitrogen
Oxygen
Propane

Specific gravity
Compress
Viscosity

Carbon Dioxide
Nitrogen
Hydrogen
Oxygen
Argon
Nitrous Oxide

HART Commands with the DD Menu Continued

4-6 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

1 Vortex Diag
2 Press Diag
3 Temp Diag
4 Vel
5 Temp
6 Temp 2
7 Press
8 Records in Log
9 Read System Log
System Log Clear
Status

1 Vtx Freq
2 Sim Vtx Freq
3 Vtx AtoD
4 Filter Set
5 Gain Set
6 Re
7 Vel
8 Max Vel
9 AD1
AD2
AD3
AD4

1 Press
2 Sim Press
3 Excite
4 Excite AtoD
5 Sense
6 Sense AtoD
7 Max Press

1 Temp
2 Sim Temp
3 RTD1
4 RTD1 AtoD
5 Max temp
6 Temp 2
7 Sim Temp 2
8 RTD2
9 RTD2 AtoD
Max temp 2

From Online Menu

Diagnostics Menu

1 Status group 1
2 Status group 2
3 Status group 3

SPI not communicating
Freq. Input Overrange
FRAM CRC error
Signal Board Power ...
RTD1 Fault
RTD2 Fault
Press. Transducer Fault

Totalizer Relay Overrange

Alarm 1 Set
Alarm 2 Set
Alarm 3 Set

1 Model
2 Distributor
3 Write protect
4 Manufacturer
5 Dev id
6 Tag
7 Descriptor
8 Message
9 Date
Final asmbly num
Universal rev
Fld dev rev
Software rev
Burst mode
Burst option
Poll addr
Num req preams

From Online Menu

Review Menu

HART Commands with the DD Menu Continued

IM-240 4-7

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

1 Calibration Review
2 Vortex Sensor
3 Vortex Cal
4 Press Sensor
5 Press Cal
6 Temp Sensor
7 Temp 1 & 2 Cal
8 Temp 2 Sensor
9 Cal. Correction

1 Vol snsr unit
2 USL
3 LSL
4 Min Span
5 Damp
6 Snsr s/n
7 Sim Vtx
8 Max Vel
9 Vortex Diag

1 K Factor
2 Ck Value
3 Lo flo cutoff

1 Pres snsr unit
2 USL
3 LSL
4 Min span
5 Damp
6 Snsr s/n
7 Sim Press
8 Maximum
9 Press Diag

1 PCal B00
2 PCal B01
3 PCal B02
4 PCal B10
5 PCal B11
6 PCal B12
7 PCal B20
8 PCal B21
9 PCal B22
Ref. Resistance
Internal Temp. Cal
Cal Current

1 Temp unit
2 USL
3 LSL
4 Min span
5 Damp
6 Snsr s/n
7 Sim Temp
8 Maximum
9 Temp Diag

1 RTD1 Ro
2 RTD1 alpha
3 RTD1 beta
4 RTD2 Ro
5 RTD2 alpha
6 RTD2 beta

1 Vtx Freq
2 Sim Vtx Freq
3 Vtx AtoD
4 Filter Set
5 Gain Set
6 Re
7 Vel
8 Max Vel
9 AD1
AD2
AD3
AD4

1 Press
2 Sim Press
3 Excite
4 Excite AtoD
5 Sense
6 Sense AtoD
7 Max Press

1 Temp
2 Sim Temp
3 RTD1
4 RTD1 AtoD
5 Max Temp
6 Temp 2
7 Sim Temp 2
8 RTD2
9 RTD2 AtoD
Max temp 2

From Online Menu

To Calibration Review Menu

1 Temp unit
2 USL
3 LSL
4 Min span
5 Damp
6 Snsr s/n
7 Sim Temp 2
8 Maximum
9 Temp Diag

1 Temp
2 Sim Temp
3 RTD1
4 RTD1 AtoD
5 Max Temp
6 Temp 2
7 Sim Temp 2
8 RTD2
9 RTD2 AtoD
Max temp 2

Sensor Cal Menu

1 Flow 1
2 Deviation 1
3 Flow 2
4 Deviation 2
5 Flow 3
6 Deviation 3
7 Flow 4
8 Deviation 4
9 Flow 5
Deviation 5
Flow 6
Deviation 6
Flow 7
Deviation 7
Flow 8
Deviation 8
Flow 9
Deviation 9
Flow 10
Deviation 10

HART Commands with the DD Menu Continued

4-8 IM-240

Online Menu

1 Device Setup
2 PV
3 PV AO

4 PV LRV
5 URV

1 Process Variables

2 Diag/Service

3 Basic Setup

4 Detailed Setup
5 Review

1 Snsr
2 AI % Rnge
3 AO1

1 Distributor
2 Model
3 Dev id
4 Tag
5 Date
6 Write Protect
7 Descriptor
8 Message
9 PV snsr s/n
Final assy #
Revision #'s

1 Test Device
2 Loop Test
3 Calibration
4 D/A Trim

1 Tag
2 PV unit
3 Range Values
4 Device Information
5 PV Xfer fnctn
6 PV Damp

1 PV LRV
2 PV URV
3 PV LSL
4 PV USL

1 Universal Rev
2 Fld dev Rev
3 Software Rev

1 4 mA
2 20 mA
3 Other
4 End

1 Apply Values
2 Enter Values

1 4 mA
2 20 mA
3 Exit

1 PV LRV
2 PV URV
3 PV USL
4 PV LSL

1 Sensors

2 Signal Condition

3 Output Condition

4 Device Information

1 PV
2 PV Sensor Unit
3 Sensor information

1 Snsr Damp
2 URV
3 AI LRV
4 Xfer Fnctn
5 AI % rnge

1 Analog Output
2 HART Output

1 Distributor
2 Model
3 Dev id
4 Tag
5 Date
6 Write Protect
7 Descriptor
8 Message
9 PV snsr s/n
Final assy #
Revision #'s

1 AO1
2 AO alarm typ
3 Loop test
4 D/A trim
5 Scaled D/A trim

1 4 mA
2 20 mA
3 Other
4 End

1 Poll addr
2 Num req. preams
3 Burst mode
4 Burst option

1 Universal Rev
2 Fld dev Rev
3 Software Rev

1 PV LRV
2 PV URV

PV LSL, PV USL, PV Min span

1 PV LRV
2 PV URV

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

HART Commands with Generic DD Menu

Use password 16363.

IM-240 4-9

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Sequence

Description

Access

Notes

1,1,1

Snsr

View

Primary variable value

1,1,2

AI % Rnge

View

Analog output % range

1,1,3

AO1

View

Analog output, mA

1,2,1

Test Device

N/A

Not used

1,2,2,1

4 mA

View

Loop test, fix analog output at 4 mA

1,2,2,2

20 mA

View

Loop test, fix analog output at 20 mA

1,2,2,3

Other

Edit

Loop test, fix analog output at mA value entered

1,2,2,4

End Exit loop test

1,2,3,1,1

4 mA

N/A

Not used, apply values

1,2,3,1,2

20 mA

N/A

Not used, apply values

1,2,3,1,3

Exit Exit apply values

1,2,3,2,1

PV LRV

Edit

Primary variable lower range value

1,2,3,2,2

PV URV

Edit

Primary variable upper range value

1,2,3,2,3

PV USL

View

Primary variable upper sensor limit

1,2,3,2,4

PV LSL

View

Primary variable lower sensor limit

1,2,4

D/A Trim

Edit

Calibrate electronics 4mA and 20mAvalues

1,3,1

Tag

Edit

Tag

1,3,2

PV unit

Edit

Primary variable units

1,3,3,1

PV LRV

Edit

Primary variable lower range value

1,3,3,2

PV URV

Edit

Primary variable upper range value

1,3,3,3

PV LSL

View

Primary variable upper sensor limit

1,3,3,4

PV USL

View

Primary variable lower sensor limit

1,3,4,1

Distributor

N/A

Not used

1,3,4,2

Model

N/A

Not used

1,3,4,3

Dev id

View

Device identification

1,3,4,4

Tag

Edit

Tag

1,3,4,5

Date

Edit

Date

1,3,4,6

Write Protect

View

Write protect

1,3,4,7

Descriptor

Edit

Vortex flowmeter

1,3,4,8

Message

Edit

32 character alphanumeric message

1,3,4,9

PV snsr s/n

View

Primary variable sensor serial number

1,3,4,menu

Final assy #

Edit

Final assembly number

1,3,4,menu,1

Universal Rev

View

Universal revision

1,3,4,menu,2

Fld dev Rev

View

Field device revision

1,3,4,menu,3

Software Rev

View

Software revision

1,3,5

PV Xfer fnctn

View

Linear

1,3,6

PV Damp

Edit

Primary variable damping (time constant) in seconds

1,4,1,1

PV

View

Primary variable value

1,4,1,2

PV Sensor Unit

Edit

Primary variable units

1,4,1,3

Sensor Information

View

PV LSL, PV USL, PV Min span

1,4,2,1

Snsr Damp

Edit

Primary variable damping (time constant) in seconds

1,4,2,2,1

PV LRV

Edit

Primary variable low range value

1,4,2,2,2

PV URV

Edit

Primary variable upper range value

1,4,2,3,1

PV LRV

Edit

Primary variable low range value

1,4,2,3,2

PV URV

Edit

Primary variable upper range value

1,4,2,4

Xfer Fnctn

View

Linear

1,4,2,5

AI % rnge

View

Analog output % range

1,4,3,1,1

AO1

View

Analog output, mA

1,4,3,1,2

AO alarm typ

N/A

Not used

Fast Key Sequence

Use password 16363.

4-10 IM-240

Continued on next page

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Sequence

Description

Access

Notes

1,4,3,1,3,1

4 mA

View

Loop test, fix analog output at 4 mA

1,4,3,1,3,2

20 mA

View

Loop test, fix analog output at 20 mA

1,4,3,1,3,3

Other

Edit

Loop test, fix analog output at mA value entered

1,4,3,1,3,4

End Exit loop test

1,4,3,1,4

D/A trim

Edit

Calibrate electronics 4mA and 20mAvalues

1,4,3,1,5

Scaled D/A trim

N/A

Not used

1,4,3,2,1

Poll addr

Edit

Poll address

1,4,3,2,2

Num req. preams

View

Number of required preambles

1,4,3,2,3

Burst mode

N/A

Not used

1,4,3,2,4

Burst option

N/A

Not used

1,4,4,1

Distributor

N/A

Not used

1,4,4,2

Model

N/A

Not used

1,4,4,3

Dev id

View

Device identification

1,4,4,4

Tag

Edit

Tag

1,4,4,5

Date

Edit

Date

1,4,4,6

Write Protect

View

Write protect

1,4,4,7

Descriptor

Edit

Vortex flowmeter

1,4,4,8

Message

Edit

32 character alphanumeric message

1,4,4,9

PV snsr s/n

View

Primary variable sensor serial number

1,4,4,menu

Final assy #

Edit

Final assembly number

1,4,4,menu,1

Universal Rev

View

Universal revision

1,4,4,menu,2

Fld dev Rev

View

Field device revision

1,4,4,menu,3

Software Rev

View

Software revision

1,5

Review

N/A

Not used

2

PV

View

Primary variable value

3

PV AO

View

Analog output, mA

4,1

PV LRV

Edit

Primary variable lower range value

4,2

PV URV

Edit

Primary variable upper range value

5,1

PV LRV

Edit

Primary variable lower range value

5,2

PV URV

Edit

Primary variable upper range value

IM-240 4-11

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

RS-485 -

RS-485 +

RS-485 GND

RS-485 Master

Vortex Meter

RS-485 -

RS-485 +

RS-485 GND

RS-485 -

RS-485 +

RS-485 GND

Other Device 2, etc.

RS-485 -

RS-485 +

RS-485 GND

Other Device 1

Warning!

Place controls in manual

mode when making

configuration changes to

the vortex meter.

Modbus Communications

Applicable Flow Meter Models

Sierra’s InnovaMass® 240 and 241 Mass Vortex Flow Meters with Modbus
communication protocol and firmware version 4.00.58 and above.

Overview

This document describes the preliminary implementation of the Modbus
communication protocol for use in monitoring common process variables
in the Sierra InnovaMass 240 and 241 mass vortex flow meters. The
physical layer utilizes the half-duplex RS-485 port, and the Modbus
protocol.

Reference Documents

The following documents are available online from www.modbus.org.

Modbus Application Protocol Specification V1.1
Modbus Over Serial Line Specification & Implementation Guide V1.0
Modicon Modbus Protocol Reference Guide PI–MBUS–300 Rev. J

Wiring

An RS485 daisy chained network configuration as depicted below is
recommended. Do not use a star, ring, or cluster arrangement. Consult

your RS-485 master’s documentation about the need for
termination, pull-up and pull-down resistors.

4-12 IM-240

Figure 4-4.RS-485 Wiring (MODBUS)

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

4-20

mA 3

4-20

mA 1

DC

PWR

+ - +

4-20

mA 2

- + - +

RS485

RS485

RS485 GND

-

OPTION 2

+

ALARM

2

PULSE

OUT

FREQ

OUT

+ - +

ALARM

1

-+ -

4

OPTION 1

1 2 3 15 2 3

ALARM

3

- + -

4 5

+

-

240/241 Pins

Rs485 Labeling Synonyms

RS485 -

A, TxD-/RxD-, Inverting pin

RS485 +

B, TxD+/RxD+, Non­Inverting pin

RS485 GND

GND, G, SC, Reference

Pin Labeling (among devices)

“RS-485 –” = “A” = “TxD-/RxD-” = “Inverting pin”
“RS-485 +” = “B” = “TxD+/RxD+” = “Non-Inverting pin”
“RS-485 GND” = “GND” = “G” = “SC” = “Reference”

IM-240 4-13

Figure 2 DC Wiring Terminals

Figure 2-26. DC Wiring Terminals

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Menu Items

The following menu items are in the display, DD option Output
Menu and allow selection and control of the Modbus
communication protocol.

Address

When the Modbus protocol is selected, the Modbus address is
equal to the user programmable device address if it is in the range

1…247, in accordance with the Modbus specification. If the device

address is zero or is greater than 247, then the Modbus address is
internally set to 1.

Comm Protocol

The Comm Protocol menu allows selection of “Modbus RTU Even,”
“Modbus RTU Odd,” or “Modbus RTU None2,” or “Modbus RTU
None1,” (non-standard Modbus) with Even, Odd and None referring to

the parity selection. When even or odd parity is selected, the unit is
configured for 8 data bits, 1 parity bit and 1 stop bit; with no parity, the
number of stop bits is 1 (non-standard) or 2. When changing the
protocol, the change is made as soon as the Enter key is pressed.

Modbus Units

The Modbus Units menu is to control what units, where applicable, the
meter’s variables will be displayed in. Internal – these are the base units

of the meter, °F, psia, lbm/sec , ft3/sec, Btu/sec , lbm/ft3 Display –
variables are displayed in user selected display unit.

Modbus Order

The byte order within registers and the order in which multiple registers
containing floating point or long integer data are transmitted may be
changed with this menu item. According to the Modbus specification,
the most significant byte of a register is transmitted first, followed by
the least significant byte. The Modbus specification does not prescribe
the order in which registers are transmitted when multiple registers
represent values longer than 16 bits. Using this menu item, the order in
which registers representing floating point or long integer data and/or
the byte order within the registers may be reversed for compatibility
with some PLCs and PC software.

4-14 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

0-1:2-3

Most significant register first, most significant byte first (default)

2-3:0-1

Least significant register first, most significant byte first

1-0:3-2

Most significant register first, least significant byte first

3-2:1-0

Least significant register first, least significant byte first

Registers

Usage

Valid Function Codes

00001–09999

Read/write bits ("coils")

01 (read coils) 05 (write single coil) 15
(write multiple coils)

10001–19999

Read-only bits ("discrete inputs")

02 (read discrete inputs)

30001–39999

Read-only 16 bit registers ("input registers"),
IEEE 754 floating point register pairs, arbitrary
length strings encoded as two ASCII
characters per 16-bit register

03 (read holding registers) 04 (read
input registers)

40001–49999

Read/write 16-bit registers ("holding
registers"), IEEE 754 floating point register
pairs, arbitrary length strings encoded as two
ASCII characters per 16-bit register

03 (read holding registers) 06 (write
single register) 16 (write multiple
registers)

The following four selections are available in this menu; when
selecting an item, the protocol is changed immediately without
having to press the Enter key.

Table 4-1.Byte Order

Note that all of the registers are affected by the byte order, including
strings and registers representing 16-bit integers; the register order only
affects the order of those registers representing 32-bit floating point and
long integer data, but does not affect single 16-bit integers or strings.

Modbus Protocol

The Modbus RTU protocol is supported in this implementation.
Supported baud rates are 1200, 2400, 4800, 9600, 19200, 38400, 57600,
and 115200. The default baud rate is 19200 baud. Depending upon the
Modbus protocol selected, data are transmitted in 8-bit data frames with
even or odd parity and 1 stop bit, or no parity and 2 or 1 (non-standard)
stop bits.

The current Modbus protocol specification does not define register
usage, but there is an informal register numbering convention derived
from the original (now obsolete) Modicon Modbus protocol
specification, and used by many vendors of Modbus capable products.

IM-240 4-15

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Registers

Function Codes

Data Type and Address Range

00001-09999

01, 05, 15

Read/write bits 0000-9998

10001-19999

02

Read-only bits 0000-9999

30001-39999

03, 04

Read-only 16-bit registers 0000-9998

40001-49999

03, 06, 16

Read/write 16-bit registers 0000-9998

Each range of register numbers maps to a unique range of addresses that are
determined by the function code and the register number. The address is equal to
the least significant four digits of the register number minus one, as shown in the
following table.

Register Definitions

The meter serial number and those variables that are commonly monitored (mass,
volume and energy flow rates, total, pressure, temperature, density, viscosity,
Reynolds number, and diagnostic variables such as frequency, velocity, gain,
amplitude and filter setting) are accessible via the Modbus protocol. Long integer
and floating point numbers are accessed as pairs of 16-bit registers in the register
order selected in the Modbus Order menu. Floating point numbers are formatted
as single precision IEEE 754 floating point values.

The flow rate, temperature, pressure, and density variables may be accessed as
either the flow meter internal base units or in the user-programmed display

units, which is determined by the programming Output Menu’s “Modbus
Units” item. The display units strings may be examined by accessing their

associated registers. Each of these units string registers contain 2 characters of
the string, and the strings may be 2 to 12 characters in length with unused
characters set to zero. Note that the byte order affects the order in which the
strings are transmitted. If the Modbus Order menu (see page 2) is set to 0-1:2-3
or 2-3:0-1, then the characters are transmitted in the correct order; if set to 1­0:3-2 or 3-2:1-0, then each pair of characters will be transmitted in reverse
order.

4-16 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Registers

Variable

Data Type

Units

Function
Code

Addresses

65100-65101

Serial number

unsigned long

—

03, 04

30525-30526

Totalizer

unsigned long

display units*

03, 04

524-525

32037-32042

Totalizer units

string

—

03, 04

2036-2041

30009-30010

Mass flow

float

display units*

03, 04

8-9

30007-30008

Volume flow

float

display units*

03, 04

6-7

30005-30006

Pressure

float

display units*

03, 04

4-5

30001-30002

Temperature

float

display units*

03, 04

0-1

30029-30030

Velocity

float

ft/sec

03, 04

28-29

30015-30016

Density

float

display units*

03, 04

14-15

30013-30014

Viscosity

float

cP

03, 04

12-13

30031-30032

Reynolds number

float

—

03, 04

30-31

30025-30026

Vortex frequency

float

Hz

03, 04

24-25

34532

Gain

char

—

03, 04

4531

30085-30086

Vortex amplitude

float

Vrms

03, 04

84-85

30027-30028

Filter setting

float

Hz

03, 04

26-27

Registers

Variable

Data type

Units

Function
Code

Addresses

30527-30528

Totalizer #2

unsigned long

display units*

03, 04

526-527

32043-32048

Totalizer #2 units

string

—

03, 04

2042-2047

30003-30004

Temperature #2

float

display units*

03, 04

2-3

30011-30012

Energy flow

float

display units*

03, 04

10-11

Registers

Variable

Data type

Units

Function Code

Addresses

32007-32012

Volume flow units

string

—

03, 04

2006-2011

32001-32006

Mass flow units

string

—

03, 04

2000-2005

32025-32030

Temperature units

string

—

03, 04

2024-2029

32019-32024

Pressure units

string

—

03, 04

2018-2023

32031-32036

Density units

string

—

03, 04

2030-2035

32013-32017

Energy flow units

string

—

03, 04

2012-2017

Table 4-2.Register Definitions

The following registers are available with the energy meter firmware:

The following registers contain the display units strings:

Function codes 03 (read holding registers) and 04 (read input registers) are the
only codes supported for reading these registers, and function codes for writing
holding registers are not implemented. We recommend that the floating point and
long integer registers be read in a single operation with the number of registers
being a multiple of two. If these data are read in two separate operations, each

IM-240 4-17

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Bit(s)

Definition

0-1

Byte order (see Modbus Order on page 2)

0 = 3-2:1-0 1 = 2-3:0-1

2 = 1-0:3-2 3 = 0-1:2-3

2

Temperature sensor fault

3

Pressure sensor fault

4

A/D converter fault

5

Period overflow

6

Pulse overflow

7

Configuration changed

Registers

Variable

Function Code

Address

10001

Alarm #1 state

02

0

10002

Alarm #2 state

02

1

10003

Alarm #3 state

02

2

reading a single 16-bit register, then the value will likely be invalid.

The floating point registers with values in display units are scaled to the same
units as are displayed, but are instantaneous values that are not smoothed. If
display smoothing is enabled (non-zero value entered in the Display TC item
in the Display Menu), then the register values will not agree exactly with the
displayed values.

Exception Status Definitions

The Read Exception Status command (function code 07) returns the exception
status byte, which is defined as follows. This byte may be cleared by setting
“coil” register #00003 (function code 5, address 2, data = 0xff00).

Discrete Input Definitions

The status of the three alarms may be monitored via the Modbus Read Discrete
Input command (function code 02). The value returned indicates the state of the
alarm, and will be 1 only if the alarm is enabled and active. A zero value is
transmitted for alarms that are either disabled or inactive,

4-18 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Exception

Code

Description

01

Invalid function code — function code not supported by device

02

Invalid data address — address defined by the start address and number of registers

is out of range

03

Invalid data value — number of registers = 0 or >125 or incorrect data with the Write

Single Coil command

Control Register Definitions

The only writeable registers in this implementation are the Reset Exception
Status, Reset Meter and Reset Totalizer functions, which are implemented as

”coils” which may be written with the Write Single Coil command (function

code 05) to address 8 through 10, respectively, (register #00009 through #00011).
The value sent with this command must be either 0x0000 or 0xff00, or the meter
will respond with an error message; the totalizer will be reset or exception status
cleared only with a value of 0xff00.

Error Responses

If an error is detected in the message received by the unit, the function code
in the response is the received function code with the most significant bit set,
and the data field will contain the exception code byte, as follows:

If the first byte of a message is not equal to the unit’s Modbus address, if the

unit detects a parity error in any character in the received message (with even or
odd parity enabled), or if the message CRC is incorrect, the unit will not
respond.

Command Message Format

The start address is equal to the desired first register number minus one. The
addresses derived from the start address and the number of registers must all be
mapped to valid defined registers, or an invalid data address exception will occur.

Normal Response Message Format

IM-240 4-19

Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Exception Response Message Format

Examples

Read the exception status byte from the device with address 1:

01 07 41 E2

01 Device address
07 Function code, 04 = read exception status

A typical response from the device is as follows:

01 07 03 62 31

01 Device address
07 Function code
03 Exception status byte
62 31 CRC

Request the first 12 registers from device with address 1:

01 04 00 00 00 0C F0 0F

01 Device address
04 Function code, 04 = read input register
00 00 Starting address
00 0C Number of registers = 12
F0 0F CRC

A typical response from the device is as follows: *note these are the older
register definitions

01 04 18 00 00 03 E8 00 00 7A 02 6C 62 00 00 41 BA 87 F2 3E BF
FC 6F 42 12 EC 8B 4D D1

01 Device address
04 Function code
18 Number of data bytes = 24
00 00 03 E8 Serial number = 1000 (unsigned long)
00 00 7A 02 Totalizer = 31234 lbm (unsigned long)
6C 62 00 00 Totalizer units = “lb” (string, unused characters
are 0)
41 BA 87 F2 Mass flow rate = 23.3164 lbm/sec (float)

3E BF FC 6F Volume flow rate = 0.3750 ft3/sec (float)
42 12 EC 8B Pressure = 36.731 psia (float)
4D D1 CRC

4-20 IM-240

Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

An attempt to read register(s) that don’t exist

01 04 00 00 00 50 F1 D2

01 Device address
04 Function code 4 = read input register
00 00 Starting address
00 50 Number of registers = 80
F0 36 CRC

results in an error response as follows:

01 84 02 C2 C1

01 Device address
84 Function code with most significant bit set indicates
error response
02 Exception code 2 = invalid data address
C2 C1 CRC

Request the state all three alarms:

01 02 00 00 00 03 38 0B

01 Device address
02 Function code 2 = read discrete inputs
00 00 Starting address
00 03 Number of inputs = 3
38 0B CRC

and the unit responds with:

01 02 01 02 20 49

01 Device address
02 Function code
01 Number of data bytes = 1
02 Alarm #2 on, alarms #1 and #3 off
20 49 CRC

To reset the totalizer:

01 05 00 00 FF 00 8C 3A

01 Device address
05 Function code 5 = write single coil
00 09 Coil address = 9
FF 00 Data to reset totalizer
8C 3A CRC (not the correct CRC EJS-02-06-07)

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Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

The unit responds with an identical message to that transmitted, and the
totalizer is reset. If the “coil” is turned off as in the following message,
the response is also identical to the transmitted message, but the totalizer
is not affected.

01 05 00 00 00 00 CD CA

01 Device address
05 Function code 5 = write single coil
00 00 Coil address = 0
00 00 Data to “turn off coil” does not reset totalizer
CD CA CRC

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Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

BACnet MS/TP Description

This document describes the function and operation of the optional
BACnet interface for the Sierra Instruments 240/241Series.

BACnet MS/TP Description

The BACnet Master-Slave/Token-Passing (MSTP) driver
implements a data link protocol that uses the services of the RS­485 physical layer. The MS/TP bus is based on BACnet standard
protocol SSPC-135, Clause 9. BACnet MS/TP protocol is a peer­to-peer, multiple master protocols based on token passing. Only
master devices can receive the token, and only the device holding
the token is allowed to originate a message on the bus. The token is
passed from master device to master device using a small message.
The token is passed in consecutive order starting with the lowest
address. Slave devices on the bus only communicate on the bus
when responding to a data request from a master device.

Baud Rates on the MS/TP Bus

An MS/TP bus can be configured to communicate at one of four
different baud rates. It is very important that all of the devices on
an MS/TP bus communicate at the same baud rate. The baud rate
setting determines the rate at which devices communicate data
over the bus. The baud rate settings available on InnovaMass
vortex mass flow meters are 9600, 19200 and 38400.

Baud Rate and MAC address configuration

You will need the following to connect BACnet to your device:

1. Power on the InnovaMass instrument.

2. Press enter button and type in the factory password

16363 (use up and down arrows to enter the numbers).

Note: If your meter was ordered with BACnet steps 3

through 8 would have already been configured for you ­skip to step 9.

3. Use the right  button to navigate to the Diagnostics

Menu

4. Press enter then the right  button

5. Use the down button  to navigate to the Config Code

screen

6. After reaching Config Code screen, press the right  to

navigate to Comm. Type screen.

7. Change the Comm. Type to BACnet and press enter.

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Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Properties

Object Types

Device

Analog Input

Binary Input

Binary

Value

Object_Identifier

  



Object_Name

  



Object_Type

  



System_Status



Vendor_Name



Vendor_Identifier



Model_Name



Firmware_Revision



Application-Software-Version



Note: BACnet will enable Baud Rate and MAC address
screens on the Output Menu.

8. Press Exit twice to reach Diagnostics Menu back

9. Navigate to the Output Menu by using right  or l
eft arrow  buttons.

10. Press down  button until you reach the Baud
Rate and MAC address screens.

11. Change the required settings and press Exit then the
Enter button to save the configuration.

12. Reboot the vortex meter by powering off and on

Note:
a) The 240/241 Series supports 9600, 19200, and
38,400 baud rates.
b) MAC address range is

0-127.

Supported BACnet Objects

A BACnet object represents physical or virtual equipment
information, as a digital input or parameters. The 240/241
Series vortex mass flow meter has the following object types:

a. Device Object
b. Analog Input
c. Binary Input
d. Binary Value

Each object type defines a data structure composed by
properties that allow the access to the object information. The
below table shows the implemented properties for each
Vortex Mass Flow Meters object type.

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Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Property Name

Default Values

Object-Identifier

7

Object-Name

Device,1

Object-Type

Device

System-Status

Operational

Vendor-Name

Sierra Instruments

Vendor-Identifier

558

Model-Name

Multivariable Flow Meter

Firmware-Revision

N/A

Application-Software-Version

1.07

Protocol-Version

1

Protocol-Revision

4

Protocol-Services-Supported

{F,F,F,F,F,F,F,F,F,F,F,F,T,F,T,T,T,T,F,F,F,F,F,F,F,F,F,F,F,F,T,T,F,F,F,F,F}

Protocol-Object-Types­Supported

{T,F,F,T,F,T,F,F,T,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F,F}

Protocol_Version



Protocol_Revision



Protocol_Services_Supported



Protocol_Object_Types_Supported



Object_List



Max_ADPU_Length_Accepted



Segmentation_Supported



ADPU_Timeout



Number_Of_ADPU_Retries



Max_Masters



Max_Info_Frames



Device_Address_Binding



Database_Revision



Status_Flags

Event_State







Reliability

Out_Of_Service

 (W)

 (W)

 (W)

Units



Polarity

 (W)

Priority_Array

Relinquish_Default

Status_Flag







Present_Value

 (W)

 (W)

 (W)

Inactive_Text

Active_Text

Device Object

The Device object default property values are as follows:

(W) – Writable Property.

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Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

Object-List

{(analog-input,1),(analog-input,2),(analog-input,3),(analog-input,4), (analog­input,5), (analog-input,6),(analog-input,7),(analog-input,8) (analog-input,9),(analog­input,10), (analog-input,11), (analog-input,12), (analog-input,13),(analog­input,14), (analog-input,15),(analog-input,16),(analog-input,17), (analog­input,18),(analog-input,19),(binary-input,1),(binary-input,2),(binary-input,3),(binary­input,4), (binary-value,1), (device,7) }

Max-Apdu-Length-Accepted

300

Segmentation-Supported

no-segmentation

Apdu-Timeout

3000

Number-Of-APDU-Retries

1

Max-Master

127

Max-Info-Frames

1

Device-Address-Binding

()

Database-Revision

0

Object Instance

Object Name

Unit

Description

1

Volume Flow

cubic-feet-per-second,
cubic-feet-per-minute,
us-gallons-per-minute,
imperial-gallons-per-minute,
liters-per-minute,
liters-per-second,
liters-per-hour,
cubic-meters-per-second,
cubic-meters-per-minute,
cubic-meters-per-hour

This AI object is used to
measure volume flow.

2

Mass Flow

pounds-mass-per-second,
grams-per-second,
kilograms-per-second ,
kilograms-per-minute ,
kilograms-per-hour,
pounds-mass-per-minute ,
pounds-mass-per-hour,
tons-per-hour,
grams-per-second ,
grams-per-minute

This AI object is used to
measure mass flow.

3

Temperature 1

degrees-Celsius,
degrees-Kelvin,
degrees-Fahrenheit

This AI object measures
Temperature in one of the
given Unit.

4

Temperature 2

degrees-Celsius,
degrees-Kelvin,
degrees-Fahrenheit

This AI object measures
Temperature in one of the
given Unit.

Note - Device Communication Control: Password – “vortek”

Analog Input Object:

Vortex Mass Flow Meters Analog Input type objects are described
in the below Table –

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Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

5

Pressure

pounds-force-per-square-inch,
inches-of-water,
inches-of-mercury,
millimeters-of-mercury,
bars,
millibars,
pascals,
kilopascals

This AI Object measures the
Pressure of the fluid.

6

Density

kilograms-per-cubic-meter

This AI Object measures the
Density of the fluid.

7

Energy Flow

Kilowatts,
Horsepower,
btus-per-hour,,
kilo-btus-per-hour,
megawatts

This AI Object measures the
Energy Flow in the fluid. Note:
This object is only valid for an
EMS type meter.

8

Totalizer 1

&

Totalizer 2

If Totalizer selection for Mass
measure –
pounds-mass-per-second,
grams-per-second,
kilograms-per-second ,
kilograms-per-minute ,
kilograms-per-hour,
pounds-mass-per-minute ,
pounds-mass-per-hour,
tons-per-hour,
grams-per-second ,
grams-per-minute
If Totalizer selection for Volume
measure –
cubic-feet-per-second,
cubic-feet-per-minute,
us-gallons-per-minute,
imperial-gallons-per-minute,
liters-per-minute,
liters-per-second,
liters-per-hour,
cubic-meters-per-second,
cubic-meters-per-minute,
cubic-meters-per-hour
If Totalizer selection for Energy
measure –
Kilowatts,
Horsepower,
btus-per-hour,,
kilo-btus-per-hour,
megawatts

An electronic counter which
records the total accumulated
flow since the last time the
counter was reset.

10

StatusRegister

NO UNITS

This Object indicates the
current Status of the meter.

11

Channel 1

(4-20mA)

milliamperes

This Object indicates the value of
the 1st analog output.

12

Channel 2

(4-20mA)

milliamperes

This Object indicates the value of
the 2nd analog output.

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Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

13

Channel 3

(4-20mA)

milliamperes

This Object indicates the value of
the 3rd analog output.

14

Scaled Freq

hertz

This Object indicates the value of
the scaled frequency output.

15

Flow Velocity

feet-per-second

This Object indicates the fluid
velocity.

16

Viscosity

centipoises

This Object indicates the fluid
viscosity.

17

Frequency

hertz

This Object indicates the shedding
frequency of the meter.

18

VorTex Amp

millivolts

This Object indicates the strength
of the vortex signal.

19

FilterSetting

hertz

This Object indicates the setting of
the tracking filter.

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Sierra 240/241 Series Instruction Manual Chapter 4 Serial Communications

Object

Instance

Object

Name

Description

1

Alarm1

The status of the three alarms may be monitored via the
Modbus command. The value returned indicates the state of the
alarm, and will be 1 only if the alarm is enabled and active. A
zero value is transmitted for alarms that are either disabled or
inactive

2

Alarm2

3

Alarm3

4

External

This object is an external bit input which can be used for
numerous tasks such as resetting a totalizer. This Object is
only valid if an external input board is present on the flow meter.

Object Instance

Object Name

Description

1

Reset

Reset’s Totalizer

Binary Input Object:

Vortex Mass Flow Meters Binary Input type objects are described
in the below Table.

Note: Binary Input 4, Present value always read zero, because no
information available from client, so the polarity property doesn’t
impact on Present value property when the Out of service property
is false.

Binary Value Object:

Vortex Mass Flow Meters Binary Value type objects are described
in the below Table.

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Chapter 4 Serial Communications Sierra 240/241 Instruction Manual

BIBBs

DS-RP-B

DS-WP-B

DM-DDB-B

DM-DOB-B

DM-DCC-B

DS-RPM-B

DS-WPM-B

ANNEX – BACnet Protocol Implementation Conformance
Statement

Date: 19-April-2012

Applications Software Version: 1.07

Firmware Revision: N/A

BACnet Protocol Revision: 4

BACnet Standardized Device Profile (Annex L):

 BACnet Operator Workstation (B-OWS)
 BACnet Advanced Operator Workstation (B-AWS)
 BACnet Operator Display (B-OD)
 BACnet Building Controller (B-BC)
 BACnet Advanced Application Controller (B-AAC)
 BACnet Application Specific Controller (B-ASC)
 BACnet Smart Sensor (B-SS)
 BACnet Smart Actuator (B-SA)

List all BACnet Interoperability Building Blocks Supported (Annex
K):

4-30 IM-240