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 Hone y w ell’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 respec t to operating controls, displays and mechanica l in s tal lation. This manual
provides detailed procedures to assist first-time users, and it further includes keystroke
summaries, where appropriate, as quick reference or refresh e rs f or experienced pe rsonnel.
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 Manua l, 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,
st
Rev.1 July 2017 1
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
United States and
Canada
1-800-343-0228 Customer Service
1-800-423-9883 Global Technical Support
Global Email
Support
Honeywell Process
Solutions
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
Honeywell Inc.
Page iv STT700 Temperature Transmitter User’s Manual Revision 6
ask-ssc@honeywell.com
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
continued
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.
Revision 6 STT700 Temperature Transmitter User’s Manual Page v
Symbol
Description
The Factory Mutual® Approval mark means the equipment ha s been rigorou sly
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 "AT mospher e EXplosible").
Page vi 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 To olkit........................................................................................................... 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
Revision 6 STT700 Temperature Transmitter User’s Manual Page vii
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 Messag es ................................................................................................ 6
Table 4 – STT700 Standard Non-C ritical Diagno sti cs Mess ag es .......................................................... 6
Table 5 - Dimension table for use with Figure 6 and Figure 7 ............................................................ 12
Page viii STT700 Temperature Transmitter User’s Manual Revision 6
List of Figure s
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
Revision 6 STT700 Temperature Transmitter User’s Manual Page ix
HART version 7
Human-Machine Interface (HMI)
No Display
Standard Display
Calibration
Single
Approvals (See Appendix A for details.)
ATEX, CSA, FM, IECEx, CCoE, NEPSI, SAEx
Pipe mounting and wall mounting brackets in carbon
Integration Tools
DD or DTM Hosts such as Experion and FDM
Firmware Upgrade
SAT tool for firmware upgrade
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, approv al s, and mounting bracket options for the STT700.
Table 1 – Features and Options
Feature/Option Standard/Available Options
Communication Protoco ls
Options
Mounting Brackets
Digitally Enhanced (DE)
steel and 316 stainless steel.
Revision 6 STT700 temperature transmitter User’s Manual Page 1
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
Page 2 STT700 Temperature Transmitter User’s Manual Revision 6
Key I II III IV V VI VII VIII
STT700 - _ _ - _ _ _ - _ _ _ _ _ _ - _ _ _ _ - _ _ _ - _ - _ _, _ _, _ _ - 00000
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 transmitte rs.
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.
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 ty pe:
• 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
EU Meter
EU Meter
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 Temperatu re 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.
inside housing
(HART only)
Table 2 – Available EU Meter Characteristics
• Compatibility for replacement of existing STT250 installations
o
• 360
• Standard units of measurement: °F, °C, °R, K, Ω, mV & %
rotation in 90o increments
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
• Environm enta l 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 Transmitte r 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 Sa fety Manual, 34-TT-25-20, for additional
information. The DE variant of STT700 is not SIL certified.
Revision 6 STT700 Temperature Transmitter User’s Manual Page 5
Critical Diagnostics (Failure
Conditions)
Description
Details
Elec. Mod. Diag Failure
Action: Reset the device. If the problem persists
Elec. Mod. DAC Failure
Action: Reset the device. If problem persist,
Sensor Input Failure
"Failure in sensing section. Any of the following
to see which of these conditions are set
Char/Cal Data Corrupt
Characterization / Calibrati on data is corru pted
cycle
Config Data corrupt
Action: Power cycle the device. If the problem
Description
Details
CT Out of Range
Core Temperature out of range (-36°C to
contact the vendor.
No Factory Calibration
Factory calibration data is
PV Out of Range
Loop PV is out of configured URV and LRV.
transmitter with one that has a wider range.
CJ Out of Limits SV Bad
Cold junction sensor
the range)
The ambient temperature measured is out of
temperature source.
Table 3 – STT700 Diagnostic Messages
Table 4 – STT700 Standard Non-Critical Diagnostics Messages
Non-Critical Diagnostics
(Warning Conditions)
Diagnostics failure (like
ROM / RAM corrupt
etc.)
Failure related to DAC
which regulates 4-20mA
loop
Input sensor may be
open / short / out of
range
Factory calibration data
is corrupted
NVM data corrupted
replace the electronics module Note: Select
“Device Status - Additional Status” to see which
of these conditions are set.
replace the electronics module.
Note: Select “Device Status - Additional Status”
to see which of these conditions are set.
conditions can cause this failure:
1..Input 1 Fault
2. Input 2 Fault.
Check the sensor input connections.
3. Suspect Input.
Check sensor and connections. If the
connections are ok, and problem persists,
replace the electronics module board
Note: Select “Device Status - Additional Status”
or missing.
Replace device if error persists upon power
persists, replace the electronics module.
Page 6 STT700 Temperature Transmitter User’s Manual Revision 6
MCU temperature of the
device is out of range
not available, device is not
factory calibrated
Process value measured is
out of range
temperature or device
terminal temperature is out
of limits (-40°C to 85°C is
112.5°C).
If it is certain that the reading is in error, then
The transmitter has not been calibrated by the
factory. Contact the vendor.
Check your process temperature. Adapt the
span.
Check range and, if required, replace
the transmitter specifications
(-40°C to 85°C).
Take steps to isolate the device from the
Sensor1 excess LRV
Applied Input 1 value and
This non critical flag will be set when
Sensor1 excess
Applied Input 1 value and
This non critical flag will be set when
Suspect Input
MCU reference voltages
MCU reference voltages are beyond limits and
Fixed Current Mode
Output current is fixed and not varying as per
Input1 Fault
There is a problem with the Input 1 sensor.
Input2 Fault
There is a problem with the Input 2 sensor.
Verify sensor connections and configur atio n.
Analog Output Saturated
This status is set when loop
out of range)
Calculated analog output is either above or
Check the transmitter input.
Excess Delta Detect
This will be set when delta value exceeds
applicable delta limit
ADC Fault
ADC reference voltages
limits
Sensor2 excess LRV
Applied Input 2 value and
Sensor2 excess
Applied Input 2 value and
Input1 Out Of Range
Input 1 temperature is greater than Sensor 1
correct
URV correct
measured value differ by
more than 1.5% span at
low calibration point
measured value differ by
more than 1.5% span at
high calibration point
are beyond limits and
hence inputs measured
may not be correct
The 4-20mA loop is put in
fixed current mode and is
not following the PV value
Input1 may be open/short
Input2 may be open/short
current is set to out of 4-20
mA (generally when PV is
difference between applied Input 1 LRV value
and measured value exceeds 1.5% of span.
Perform Reset correct.
difference between applied Input 1 URV value
and measured value exceeds 1.5% of span
Perform Reset correct.
hence inputs measured may not be correct.
Replace the sensor based on Input 1, Input 2
measurement suspect.
input. Loop current mode is disabled or Loop
Test is active.
Enable loop current mode if it is disabled or
exit the Loop Test mode if active to return to
normal operation.
Verify sensor connections and configur atio n.
below the specified loop current limits. The
transmitter input is not in specified range.
Sensor 1 and Sensor 2
measured values differ by
more than a user defined
threshold
are beyond working correct
correct
URV correct
measured value differ by
more than 1.5% span at
low calibration point
measured value differ by
more than 1.5% span at
high calibration point
Measured value of Sensor1
is out of range
delta limit. When Exc ess Delta Alarm is
disabled and device is in non-redundant mode,
this status indicates that the difference
between two sensor inputs has crossed the
Controller ADC fault. Replace device if error
persists upon power cycle.
This will be set when difference between
applied Input 2 LRV value and measured
value exceeds 1.5% of span
This will be set when difference between
applied Input 2 URV value and measured
value exceeds 1.5% of span
URL or less than Sensor 1 LRL
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
Watchdog reset
Watchdog has reset (it may
Supply Voltage Fault
This is set when one of the supply voltages
SIL Diagnostics
RAM / NVM database
corrupt
Advance diagnostics data is corrupte d. Pow er
cycle the device
Measured value of Sensor2
is out of range
be due to FW failure or HW
failure)
MCU or DAC reference
voltages are beyond limits
URL or less than Sensor 2 LRL.
Set when the input at second sensor is either
under range or over range
Controller Watchdog has reset
(DAC loop / MCU) in the device is outside its
specification limits. Check the trans mitt er
supply voltage
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 instal lat ion w ith 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 devic e operation and maintenance inform ation.
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
TO THE AUTHORITY HAVING JURISDICTION FOR THE INSTALLATION.
Field Mount Housing with Meter
Field Mount Housing without Meter
without Meter
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 therm ow ell extens ion is rec om m en ded to minim iz e failure rates due to
high ambient temperatures near the tr ansmitter).
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 P LU GS SHALL ADDITIO N ALL Y BE SU ITABLE FOR THE
HAZARDOUS LOCATION, THE PRODUCT CERTIFICATION AND ACCEPTABLE
Figure 6 - Wall Mounting Dimensions
Revision 6 STT700 Temperature Transmitter User’s Manual Page 11
Field Mount Housing with and
Field Mount Housing with Meter
Field Mount Housing without Meter
without Meter
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]
Field Mount Housing with and
Figure 7 - Pipe Mounting Dimensions
Table 5 - Dimension table for use with Figure 6 and Figure 7
Page 12 STT700 Temperature Transmitter User’s Manual Revision 6
Dimensions
Figure 8 – STT700 transmitter module with lightni ng protection (top) and without (bottom)
Revision 6 STT700 Temperature Transmitter User’s Manual Page 13
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