Honeywell STT700 User Manual

STT700 SmartLine

Temperature Transmitter

User’s Manual

34-TT-25-17

Revision 6

November 2020

Honeywell Process Solutions

Copyrights, Notices and Trademarks

© Copyright 2020 by Honeywell, Inc. Revision 6, November 2020

While the information in this document is presented in good faith and believed to be accurate, Honeywell disclaims any implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in the written agreement with and for its customers. In no event is Honeywell liable to anyone for any indirect, special, or consequential damages. The information and specifications in this document are subject to change without notice.

Honeywell, TDC 3000, SFC, SmartLine, PlantScape, Experion PKS, and TotalPlant are registered trademarks of Honeywell International Inc. Other brand or product names are trademarks of their respective owners.

Honeywell Process Solutions

1250 W Sam Houston Pkwy S

Houston, TX 77042

Revision 6

STT700 Temperature Transmitter User’s Manual

Page ii

About This Manual

This manual is a detailed how to reference for installing, piping, wiring, configuring, starting up, operating, maintaining, calibrating, and servicing Honeywell’s family of STT700 temperature transmitters. Users who have a Honeywell STT700 SmartLine Temperature Transmitter configured for HART protocol or Honeywell’s Digitally Enhanced (DE) are referred to the

STT700 SmartLine Series HART/DE Option User’s Manual, document number 34-TT-25-18.

The configuration of your transmitter depends on the mode of operation and the options selected for it with respect to operating controls, displays and mechanical installation. This manual provides detailed procedures to assist first-time users, and it further includes keystroke summaries, where appropriate, as quick reference or refreshers for experienced personnel.

To digitally integrate a transmitter with one of the following systems:

For the Experion PKS, you will need to supplement the information in this document with the data and procedures in the Experion Knowledge Builder.

For Honeywell’s TotalPlant Solutions (TPS), you will need to supplement the information in this document with the data in the PM/APM SmartLine Transmitter Integration Manual, which is supplied with the TDC 3000 book set. (TPS is the evolution of the TDC 3000).

Release Information:

STT700 SmartLine Temperature Transmitter User Manual, Document # 34-TT-25-17,

Rev.1

July 2017

1st Release

Rev.2

February 2018

FM Approval updates

Rev.3

October 2018

CCoE, NEPSI, SAEx approvals added.

 

 

Sensor Wiring Best Practice Recommendations added

Rev.4

December 2018

Voltage resistance chart updated. Dimensions added.

Rev.5

July 2019

Integral Meter, Head mount Enclosure and DE Start-up fix

Rev.6

November 2020

Host / Device nomonclature

 

 

 

Revision 6

STT700 Temperature Transmitter User’s Manual

Page iii

References

The following list identifies publications that may contain information relevant to the information in this document.

STT700 SmartLine Temperature Transmitter Quick Start Installation Guide, Document

# 34-TT-25-19

STT700 SmartLine Temperature Transmitter HART/DE Option User’s Manual, Document # 34-TT-25-18

STT700 SmartLine Temperature Field Device Spec (HART), Document # 34-TT-00-05

STT700 SmartLine Transmitter Safety manual Document # 34-TT-25-20

MC Toolkit User Manual, MCT404, Document # 34-ST-25-50

Engineering Meter (EU) User Guide, Document #34-ST-25-18

STT700 Series Temperature, Transmitter, Agency IS Control Drawing #50133855

Smart Field Communicator Model STS 103 Operating Guide, Document # 34-ST-11-14 (for use with STT700 DE only)

Patent Notice

The Honeywell STT700 SmartLine Temperature Transmitter family is covered by one or more of the following U. S. Patents: 5,485,753; 5,811,690; 6,041,659; 6,055,633; 7,786,878; 8,073,098; and other patents pending.

Support and Contact Information

For Europe, Asia Pacific, North and South America contact details, refer to the back page of this manual or the appropriate Honeywell Solution Support web site:

Honeywell Corporate

www.honeywell.com

Honeywell Process Solutions

https://www.honeywellprocess.com

SmartLine Temperature

https://www.honeywellprocess.com/smartline-temperature.aspx

Training Classes

http://www.automationcollege.com

Telephone and Email Contacts

Area

Organization

Phone Number

 

 

 

 

United States and

Honeywell Inc.

1-800-343-0228

Customer Service

Canada

1-800-423-9883

Global Technical Support

 

Global Email

Honeywell Process

ask-ssc@honeywell.com

Support

Solutions

 

 

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STT700 Temperature Transmitter User’s Manual

Revision 6

Symbol Descriptions and Definitions

The symbols identified and defined in the following table may appear in this document.

Symbol

Definition

 

 

 

ATTENTION: Identifies information that requires special consideration.

 

 

 

TIP: Identifies advice or hints for the user, often in terms of performing a

 

task.

 

 

CAUTION

Indicates a situation which, if not avoided, may result in equipment or work

 

(data) on the system being damaged or lost, or may result in the inability to

 

properly operate the process.

 

 

 

CAUTION: Indicates a potentially hazardous situation which, if not avoided,

 

may result in minor or moderate injury. It may also be used to alert against

 

unsafe practices.

 

CAUTION symbol on the equipment refers the user to the product manual for

 

additional information. The symbol appears next to required information in

 

the manual.

 

 

 

WARNING: Indicates a potentially hazardous situation, which, if not avoided,

 

could result in serious injury or death.

 

WARNING symbol on the equipment refers the user to the product manual

 

for additional information. The symbol appears next to required information

 

in the manual.

 

 

 

WARNING, Risk of electrical shock: Potential shock hazard where

 

HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or 60 VDC

 

may be accessible.

 

 

 

ESD HAZARD: Danger of an electro-static discharge to which equipment may

 

be sensitive. Observe precautions for handling electrostatic sensitive

 

devices.

 

 

 

Protective Earth (PE) terminal: Provided for connection of the protective

 

earth (green or green/yellow) supply system conductor.

 

 

 

Functional earth terminal: Used for non-safety purposes such as noise

 

immunity improvement. NOTE: This connection shall be bonded to

 

Protective Earth at the source of supply in accordance with national local

 

electrical code requirements.

 

 

 

Earth Ground: Functional earth connection. NOTE: This connection shall be

 

bonded to Protective Earth at the source of supply in accordance with

 

national and local electrical code requirements.

 

 

 

Chassis Ground: Identifies a connection to the chassis or frame of the

 

equipment shall be bonded to Protective Earth at the source of supply in

 

accordance with national and local electrical code requirements.

 

 

continued

 

 

 

Revision 6

STT700 Temperature Transmitter User’s Manual

Page v

Symbol

Description

 

The Factory Mutual® Approval mark means the equipment has been rigorously

 

tested and certified to be reliable.

 

 

 

The Canadian Standards mark means the equipment has been tested and meets

 

applicable standards for safety and/or performance.

 

 

 

The Ex mark means the equipment complies with the requirements of the

 

European standards that are harmonized with the 94/9/EC Directive (ATEX

 

Directive, named after the French "ATmosphere EXplosible").

 

 

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STT700 Temperature Transmitter User’s Manual

Revision 6

 

Contents

 

1.

Introduction ....................................................................................................................................

1

 

Overview ................................................................................................................................

1

 

Features and Options ..............................................................................................................

1

 

Physical Characteristics..................................................................................................

2

 

Functional Characteristics ..............................................................................................

3

 

STT700 SmartLine Transmitter Nameplate ...........................................................................

3

 

Safety Certification Information.............................................................................................

4

 

Transmitter Adjustments ........................................................................................................

4

 

EU Meter Option – HART only .............................................................................................

4

2.

Application Design.........................................................................................................................

5

 

Overview ................................................................................................................................

5

 

Safety......................................................................................................................................

5

 

Accuracy.........................................................................................................................

5

 

Diagnostic Messages ......................................................................................................

5

3.

Installation and Startup...................................................................................................................

9

 

Installation Site Evaluation.....................................................................................................

9

 

Honeywell MC Toolkit...........................................................................................................

9

 

Mounting and Dimensions ...................................................................................................

10

 

DIN Rail Mounting.......................................................................................................

10

 

Mounting Module in Housing ......................................................................................

11

 

Dimensions...................................................................................................................

13

 

Spring Loading .............................................................................................................

15

 

Installation Procedure of Standard display for STT700: ......................................................

16

 

Uninstalling/Installing Standard Display for external wiring.......................................

16

 

Wiring a transmitter..............................................................................................................

20

 

Loop Power Overview..................................................................................................

20

 

Digital System Integration Information........................................................................

22

 

Wiring Variations .........................................................................................................

22

 

Grounding and Lightning Protection............................................................................

23

 

Input Sensor Wiring .....................................................................................................

23

 

Lightning Protector.......................................................................................................

25

4.

Startup ..........................................................................................................................................

29

 

Overview ......................................................................................................................

29

 

Startup Tasks ................................................................................................................

29

 

Output Check Procedures.............................................................................................

29

 

Constant Current Source Mode Procedure ...................................................................

30

5.

Operation......................................................................................................................................

32

 

Overview ..............................................................................................................................

32

 

Configuration Tools..............................................................................................................

32

 

Smart Field Communicator (SFC) for DE Models.......................................................

32

 

HART Communicator Model 375, 475 or MC Toolkit FDC for HART 7 Models ....

33

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STT700 Temperature Transmitter User’s Manual

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6.

Maintenance.................................................................................................................................

35

 

Overview..............................................................................................................................

35

 

Preventive Maintenance Practices and Schedules................................................................

35

 

Troubleshooting ...................................................................................................................

35

 

Troubleshooting with SFC...........................................................................................

35

 

Troubleshooting with HART communicator ...............................................................

37

 

Recommended Parts.............................................................................................................

38

 

Wiring and Installation Drawings ........................................................................................

41

 

Upgrading the firmware.......................................................................................................

42

7.

Calibration....................................................................................................................................

46

 

Recommendations for transmitter Calibration.....................................................................

46

 

Calibration Procedures.........................................................................................................

46

Appendix A. PRODUCT CERTIFICATIONS....................................................................................

47

Glossary ...............................................................................................................................................

62

 

List of Tables

 

Table 1 – Features and Options..............................................................................................................

1

Table 2

– Available EU Meter Characteristics ......................................................................................

4

Table 3

– STT700 Diagnostic Messages................................................................................................

6

Table 4

– STT700 Standard Non-Critical Diagnostics Messages..........................................................

6

Table 5

- Dimension table for use with Figure 6 and Figure 7 ............................................................

12

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STT700 Temperature Transmitter User’s Manual

Revision 6

List of Figures

 

Figure 1: STT700 Temperature Transmitter device with display module .............................................

2

Figure 2 – STT700 HART (left) and DE (right) Transmitter module....................................................

2

Figure 3 – Nameplate on the side of the transmitter...............................................................................

3

Figure 4 –STT700 Model Number Format ............................................................................................

3

Figure 5 - DIN Rail Mounting..............................................................................................................

10

Figure 6 - Wall Mounting Dimensions.................................................................................................

11

Figure 7 - Pipe Mounting Dimensions .................................................................................................

12

Figure 8 – STT700 transmitter module with lightning protection (top) and without (bottom) ............

13

Figure 9: Housing cover and O-ring.....................................................................................................

14

Figure 10 - Spring Loading and Sensor Assembly...............................................................................

15

Figure 11: : Position of Standard display for external wiring .............................................................

16

Figure 12: Assembly of Standard display with Bracket .......................................................................

17

Figure 13: short cable and display assembly.......................................................................................

17

Figure 14: Cable joint fixed in the bracket...........................................................................................

18

Figure 15: Long cable connection with STT Module...........................................................................

18

Figure 16: Positioning of Long cable in the IM Housing.....................................................................

19

Figure 17: : Example of external wiring (Reference only)...................................................................

19

Figure 18 – STT700 with HART Transmitter Operating Ranges ........................................................

20

Figure 19– STT700 with DE Transmitter Operating Ranges...............................................................

20

Figure 20 –STT700 module terminal connections ...............................................................................

21

Figure 21 – HART/DE Input Wiring Diagram for single sensor connection.......................................

24

Figure 22 – Wiring Diagram for HART Dual Sensor Connections .....................................................

24

Figure 23 – STT700 with Lightning Protector Dimensions.................................................................

25

Figure 24 – Installation without EU Meter...........................................................................................

26

Figure 25 – Installation with EU Meter................................................................................................

27

Figure 26 – Installation with Standard Display....................................................................................

27

Figure 27 – Current Loop Test Connections ........................................................................................

30

Figure 27: Housing with EU meter ......................................................................................................

39

Figure 28: Housing without EU meter .................................................................................................

39

Figure 29: HOUSING WITH STANDARD DISPLAY.......................................................................

40

Figure 30: HOUSING WITHOUT STANDARD DISPLAY ..............................................................

40

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STT700 Temperature Transmitter User’s Manual

Page ix

1. Introduction

Overview

This section is an introduction to the physical and functional characteristics of Honeywell’s STT700 SmartLine Temperature Transmitter.

Features and Options

The STT700 SmartLine Temperature Transmitter is available in a variety of models for measuring Thermocouples, RTD, Millivolts, and ohm sensor types. Table 1 lists the protocols, Human-Machine Interface (HMI), materials, approvals, and mounting bracket options for the STT700.

 

Table 1 – Features and Options

 

 

 

 

 

Feature/Option

 

Standard/Available Options

 

 

 

 

 

Communication Protocols

 

HART version 7

 

 

Digitally Enhanced (DE)

 

 

 

 

 

 

 

 

Human-Machine Interface (HMI)

 

No Display

 

Options

 

 

 

 

Standard Display

 

 

 

 

 

Calibration

 

Single

 

 

 

 

 

Approvals (See Appendix A for details.)

 

ATEX, CSA, FM, IECEx, CCoE, NEPSI, SAEx

 

 

 

 

 

Mounting Brackets

 

Pipe mounting and wall mounting brackets in carbon

 

 

steel and 316 stainless steel.

 

 

 

 

 

 

 

 

Integration Tools

 

DD or DTM Hosts such as Experion and FDM

 

 

 

 

 

Firmware Upgrade

 

SAT tool for firmware upgrade

 

 

 

 

Revision 6

STT700 temperature transmitter User’s Manual

Page 1

Honeywell STT700 User Manual

Physical Characteristics

As shown in Figure 1 and Figure 2, the STT700 is packaged in a single module. The elements in this module are connected to the process sensors, measure the process variables, respond to setup commands and execute the software and protocol for the different temperature measurement types.

Figure 1: STT700 Temperature Transmitter device with display module

Figure 2 – STT700 HART (left) and DE (right) Transmitter module

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STT700 Temperature Transmitter User’s Manual

Revision 6

Functional Characteristics

The transmitter measures process temperature and outputs a signal proportional to the measured process variable (PV). Available output communication protocols include 4 to 20mA, Honeywell Digitally Enhanced (DE) and HART protocols.

In addition, a Honeywell Multi-Communication (MC) Toolkit (not supplied with the transmitter) can facilitate setup and adjustment procedures in the case of HART and DE. Certain adjustments can be made through an Experion Station or a Universal Station if the transmitter is digitally integrated with Honeywell’s Experion or TPS/TDC 3000 control system for HART and DE transmitters.

STT700 SmartLine Transmitter Nameplate

The transmitter nameplate mounted on the side of the transmitter (see Figure 3) lists its model number, physical configuration, electronics options, accessories, certifications, and manufacturing specialties.

Figure 3 – Nameplate on the side of the transmitter

Figure 4 is an example of a typical temperature transmitter nameplate. The model number format consists of a Key Number with several table selections.

Key

 

I

 

II

 

III

 

IV

 

V

 

VI

 

VII

 

 

VIII

STT700

-

_ _

-

_ _ _

-

_ _ _ _ _ _

-

_ _ _ _

-

_ _ _

-

_

-

_ _, _ _, _ _

-

 

00000

 

Figure 4 –STT700 Model Number Format

The transmitter type can be identified from the key number. The third letter in the Key number represents this basic transmitter type:

T = Temperature

For a complete selection breakdown, refer to the appropriate Specification and Model Selection Guide provided as a separate document.

Revision 6

STT700 Temperature Transmitter User’s Manual

Page 3

Safety Certification Information

The hazardous area approvals information is listed on the nameplate which, as shown in Figure 3, is located at the bottom of the module. The approvals nameplate contains information and service marks that disclose the transmitter compliance information. Refer to Appendix A of this document for safety certification requirements and details.

Transmitter Adjustments

For HART and DE you can use the Honeywell MC Toolkit or other third-party hand-held (for HART) to make any adjustments to an STT700 SmartLine Temperature Transmitter.

Any HART 7.0 compliant PC host like Honeywell FDM can be used to configure the device. Honeywell FDM can also configure the STT700 with DE protocol.

Alternately, certain adjustments can be made through the Experion or Universal Station, if the transmitter is digitally integrated with a Honeywell Experion or TPS system.

EU Meter Option – HART only

The STT700 SmartLine Temperature Transmitter can be supplied with the optional EU Meter, see Table 2.

EU Meter inside housing

 

 

Table 2 – Available EU Meter Characteristics

 

 

 

EU Meter

Compatibility for replacement of existing STT250 installations

(HART only)

360o rotation in 90o increments

 

 

Standard units of measurement: °F, °C, °R, K, Ω, mV & %

 

 

 

Page 4

STT700 Temperature Transmitter User’s Manual

Revision 6

2. Application Design

Overview

This section discusses the considerations involved with deploying a Honeywell STT700 SmartLine Temperature Transmitter in a process system. The following areas are covered:

Safety

Input and output data

Reliability

Environmental limits

Installation considerations

Operation and maintenance

Repair and replacement

Safety

Accuracy

The STT700 SmartLine Temperature Transmitter accurately measures the temperature of a process and reports the measurement to a receiving device like a controller I/O module. Refer to STT700 Specification, 34-TT-03-19, for complete accuracy specifications.

Diagnostic Messages

The transmitter standard diagnostics are reported in the two basic categories: critical and non-critical faults. Problems detected as critical diagnostics drive the analog output to the programmed burnout level for HART and DE. Tables 3 and 4, below, list the diagnostics and how faults are handled by the STT700 transmitter. Refer to the Troubleshooting section for further details.

Table 3 show specific diagnostics to the transmitter, exclusive of those associated with HART and DE protocols. HART and DE diagnostic messages are listed and described in the STT700 SmartLine Temperature Transmitter HART/DE Option User Manual, document number 34-TT-25-18.

See Safety Integrity Level (SIL)

STT700 is intended to achieve sufficient integrity against systematic errors by the manufacturer’s design. A Safety Instrumented Function (SIF) designed with this product must not be used at a SIL level higher than the statement, without “prior use” justification by the end user or diverse technology redundancy in the design. Refer to the STT700 Safety Manual, 34-TT-25-20, for additional information. The DE variant of STT700 is not SIL certified.

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STT700 Temperature Transmitter User’s Manual

Page 5

Table 3 – STT700 Diagnostic Messages

Critical Diagnostics (Failure

 

Description

 

Details

Conditions)

 

 

 

 

Elec. Mod. Diag Failure

 

Diagnostics failure (like

 

Action: Reset the device. If the problem persists

 

 

 

replace the electronics module Note: Select

 

 

ROM / RAM corrupt

 

 

 

 

“Device Status - Additional Status” to see which

 

 

etc.)

 

 

 

 

of these conditions are set.

 

 

 

 

Elec. Mod. DAC Failure

 

Failure related to DAC

 

Action: Reset the device. If problem persist,

 

 

 

replace the electronics module.

 

 

which regulates 4-20mA

 

 

 

 

Note: Select “Device Status - Additional Status”

 

 

loop

 

 

 

 

to see which of these conditions are set.

 

 

 

 

Sensor Input Failure

 

 

 

"Failure in sensing section. Any of the following

 

 

 

 

conditions can cause this failure:

 

 

 

 

1..Input 1 Fault

 

 

 

 

2. Input 2 Fault.

 

 

Input sensor may be

 

Check the sensor input connections.

 

 

open / short / out of

 

3. Suspect Input.

 

 

range

 

Check sensor and connections. If the

 

 

 

 

connections are ok, and problem persists,

 

 

 

 

replace the electronics module board

 

 

 

 

Note: Select “Device Status - Additional Status”

 

 

 

 

to see which of these conditions are set

Char/Cal Data Corrupt

 

 

 

Characterization / Calibration data is corrupted

 

 

Factory calibration data

 

or missing.

 

 

is corrupted

 

Replace device if error persists upon power

 

 

 

 

cycle

Config Data corrupt

 

NVM data corrupted

 

Action: Power cycle the device. If the problem

 

 

 

persists, replace the electronics module.

 

 

 

 

Table 4 – STT700 Standard Non-Critical Diagnostics Messages

Non-Critical Diagnostics

 

Description

 

Details

(Warning Conditions)

 

 

 

 

CT Out of Range

 

 

 

Core Temperature out of range (-36°C to

 

 

MCU temperature of the

 

112.5°C).

 

 

device is out of range

 

If it is certain that the reading is in error, then

 

 

 

 

contact the vendor.

No Factory Calibration

 

Factory calibration data is

 

The transmitter has not been calibrated by the

 

 

not available, device is not

 

 

 

 

factory. Contact the vendor.

 

 

factory calibrated

 

 

 

 

 

PV Out of Range

 

 

 

Loop PV is out of configured URV and LRV.

 

 

Process value measured is

 

Check your process temperature. Adapt the

 

 

out of range

 

span.

 

 

 

 

Check range and, if required, replace

 

 

 

 

transmitter with one that has a wider range.

CJ Out of Limits SV Bad

 

Cold junction sensor

 

The ambient temperature measured is out of

 

 

temperature or device

 

the transmitter specifications

 

 

terminal temperature is out

 

(-40°C to 85°C).

 

 

of limits (-40°C to 85°C is

 

Take steps to isolate the device from the

 

 

the range)

 

temperature source.

Page 6 STT700 Temperature Transmitter User’s Manual Revision 6

Sensor1 excess LRV

Applied Input 1 value and

This non critical flag will be set when

correct

measured value differ by

difference between applied Input 1 LRV value

 

more than 1.5% span at

and measured value exceeds 1.5% of span.

 

low calibration point

Perform Reset correct.

Sensor1 excess

Applied Input 1 value and

This non critical flag will be set when

URV correct

measured value differ by

difference between applied Input 1 URV value

 

more than 1.5% span at

and measured value exceeds 1.5% of span

 

high calibration point

Perform Reset correct.

Suspect Input

MCU reference voltages

MCU reference voltages are beyond limits and

 

are beyond limits and

hence inputs measured may not be correct.

 

hence inputs measured

Replace the sensor based on Input 1, Input 2

 

may not be correct

measurement suspect.

Fixed Current Mode

 

Output current is fixed and not varying as per

 

 

input. Loop current mode is disabled or Loop

 

The 4-20mA loop is put in

Test is active.

 

fixed current mode and is

 

 

not following the PV value

Enable loop current mode if it is disabled or

 

 

exit the Loop Test mode if active to return to

 

 

normal operation.

Input1 Fault

Input1 may be open/short

There is a problem with the Input 1 sensor.

 

Verify sensor connections and configuration.

 

 

Input2 Fault

Input2 may be open/short

There is a problem with the Input 2 sensor.

 

Verify sensor connections and configuration.

 

 

Analog Output Saturated

This status is set when loop

Calculated analog output is either above or

 

current is set to out of 4-20

below the specified loop current limits. The

 

mA (generally when PV is

transmitter input is not in specified range.

 

out of range)

Check the transmitter input.

Excess Delta Detect

 

This will be set when delta value exceeds

 

Sensor 1 and Sensor 2

delta limit. When Excess Delta Alarm is

 

measured values differ by

disabled and device is in non-redundant mode,

 

more than a user defined

this status indicates that the difference

 

threshold

between two sensor inputs has crossed the

 

 

applicable delta limit

ADC Fault

ADC reference voltages

Controller ADC fault. Replace device if error

 

are beyond working correct

 

persists upon power cycle.

 

limits

 

 

Sensor2 excess LRV

Applied Input 2 value and

This will be set when difference between

correct

measured value differ by

applied Input 2 LRV value and measured

 

more than 1.5% span at

 

value exceeds 1.5% of span

 

low calibration point

 

 

Sensor2 excess

Applied Input 2 value and

This will be set when difference between

URV correct

measured value differ by

applied Input 2 URV value and measured

 

more than 1.5% span at

 

value exceeds 1.5% of span

 

high calibration point

 

 

Input1 Out Of Range

 

Input 1 temperature is greater than Sensor 1

 

Measured value of Sensor1

URL or less than Sensor 1 LRL

 

 

 

is out of range

Set when the input at first sensor is either

 

 

 

 

under range or over range

Revision 6

STT700 Temperature Transmitter User’s Manual

Page 7

Input2 Out Of Range

 

Input 2 temperature is greater than Sensor 2

 

Measured value of Sensor2

URL or less than Sensor 2 LRL.

 

 

 

is out of range

Set when the input at second sensor is either

 

 

 

 

under range or over range

Watchdog reset

Watchdog has reset (it may

 

 

be due to FW failure or HW

Controller Watchdog has reset

 

failure)

 

Supply Voltage Fault

 

This is set when one of the supply voltages

 

MCU or DAC reference

(DAC loop / MCU) in the device is outside its

 

voltages are beyond limits

specification limits. Check the transmitter

 

 

supply voltage

SIL Diagnostics

RAM / NVM database

Advance diagnostics data is corrupted. Power

 

corrupt

cycle the device

Page 8

STT700 Temperature Transmitter User’s Manual

Revision 6

3. Installation and Startup

Installation Site Evaluation

Evaluate the site selected for the STT700 SmartLine transmitter installation with respect to the process system design specifications and Honeywell’s published performance characteristics for your particular model and sensor selection. Some parameters that you may want to include in your site evaluation are:

Environmental Conditions: o Ambient temperature o Relative humidity

Potential Noise Sources:

o Radio frequency interference (RFI) o Electromagnetic interference (EMI)

Vibration Sources o Pumps

o Motorized system devices (e.g., pumps) o Valve cavitation

Process Parameters o Temperature

o Maximum sensor input ratings

Honeywell MC Toolkit

In preparation for post-installation processes, refer to the MC Toolkit User Manual (MCT404), Document # 34-ST-25-50, for device operation and maintenance information.

Revision 6

STT700 Temperature Transmitter User’s Manual

Page 9

Mounting and Dimensions

DIN Rail Mounting

If the STT700 is to be installed on DIN rail option then the main considerations are electrical connections and mechanical fixing. Electrical connections are identical to the bench test instructions except that thermocouple wire is likely to be used with thermocouples. Mechanical fixing of the module is by means of the snap-in DIN rail clips which are screwed to the bottom lugs of the module.

Figure 5 - DIN Rail Mounting

The DIN rail needs to be connected to Earth Ground per Section 3.4 below. It is generally required by regional wiring, safety and installation codes that these units be mounted in a suitable enclosure such as a metal cabinet or box which is locally connected to Earth Ground.

Page 10

STT700 Temperature Transmitter User’s Manual

Revision 6

Mounting Module in Housing

The STT700 module can be installed in a variety of housings suitable for field mounting (2” or 50mm pipe mount), direct head mounting, or wall mounting.

Ensure that the installation location is suitable for reliable transmitter operation (e.g. for high temperature applications, a thermowell extension is recommended to minimize failure rates due to high ambient temperatures near the transmitter).

ATTENTION:

THIS PRODUCT IS SUPPLIED WITH PLASTIC DUST PLUGS IN THE

CONDUIT/CABLE GLAND ENTRIES. IT IS THE USER’S RESPONSIBILITY TO

PROVIDE CABLE GLANDS, ADAPTORS AND/OR BLANKING PLUGS SUITABLE

FOR THE ENVIRONMENT IN WHICH THIS PRODUCT IS INSTALLED. WHEN

INSTALLED IN A HAZARDOUS LOCATION THE CABLE GLANDS, ADAPTORS

AND/OR BLANKING PLUGS SHALL ADDITIONALLY BE SUITABLE FOR THE

HAZARDOUS LOCATION, THE PRODUCT CERTIFICATION AND ACCEPTABLE

TO THE AUTHORITY HAVING JURISDICTION FOR THE INSTALLATION.

 

 

 

Field Mount Housing with Meter

Field Mount Housing without Meter

Field Mount Housing with and

without Meter

 

 

Figure 6 - Wall Mounting Dimensions

Revision 6

STT700 Temperature Transmitter User’s Manual

Page 11

 

 

 

 

 

 

 

Field Mount Housing with Meter

Field Mount Housing without Meter

 

Field Mount Housing with and

 

without Meter

 

 

 

 

 

 

 

Figure 7 - Pipe Mounting Dimensions

 

Table 5 - Dimension table for use with Figure 6 and Figure 7

 

 

 

 

 

 

 

Dimensions

 

Aluminum (field mount housing)

 

 

 

 

A

 

B

 

 

Without integral meter

 

70 mm [2.76 inch]

 

120,8 mm [4.76 inch]

 

 

With integral meter

 

127 mm [5.00 inch]

 

210,8 mm [8.30 inch]

 

Page 12

STT700 Temperature Transmitter User’s Manual

Revision 6

Dimensions

Figure 8 – STT700 transmitter module with lightning protection (top) and without (bottom)

Revision 6

STT700 Temperature Transmitter User’s Manual

Page 13

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