Honeywell STT700 Smart Line Temperature Transmitter Instruction Manual

: September 10, 2024
: Honeywell

Table of Contents

Honeywell STT700 Smart Line Temperature Transmitter
Installation
Features and Options
Mounting the Transmitter
34-TT-25-17.
Wiring Connections and Power Up
Wiring Variations
34-TT-25-17.
34-TT-25-05 for installation procedure and system requirements.
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Honeywell STT700 Smart Line Temperature Transmitter

This document provides descriptions and procedures for the Quick Installation of Honeywell’s family of SmartLine Temperature Transmitters. The STT700 is available in a variety of models for measuring Thermocouples, RTD, Millivolts and Ohm sensor types. For full details refer to the manuals listed below for Operation, Installation, Protocol, Configuration, Calibration, Maintenance, Parts, Safety and Approvals etc. including options. Copyrights, Notices and Trademarks
Copyright 2023 by Honeywell Revision 7, May 2023 Trademarks SFC, SmartLine, STT700 are U.S. registered trademarks of Honeywell Inc. . HART® is a Trademark of FieldComm Group.

Documentation
To access complete documentation, including language variants, scan the QR code below using your smart phone/device or QR code scanner. Go to the APP store for your free Smartphone QR scanner Or you can follow the URL to access the online SmartLine HUB page. The HUB page will contain direct links to open SmartLine product documentation.

URL
https://hwll.co/SmartLineHUB

Installation

For start-up, operation (including configuration), maintenance and calibration refer to the STT700 Transmitter User’s manual, #34-TT-25-17 Evaluate the site selected for the Transmitter installation with respect to the process system design specifications and Honeywell’s published performance characteristics for your particular model. Conditions to be considered include:

Table 1: Installation considerations

Environmental Conditions:	Process Parameters
– Ambient temperature	– Temperature
– Relative Humidity	– Maximum Sensor Input Ratings
Potential Noise Sources:	Vibration Sources

– Radio Frequency Interference (RFI)

– Electromagnetic Interference (EMI)

| – Pumps
– Motorized System Devices (e.g., pumps)
– Valve Cavitation

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

DEVICE CONFIGURATION
This transmitter comes with a standard factory configuration. Consult the nameplate for basic information. Reconfiguration for your particular application can be accomplished by following instructions in the Transmitter User’s manual. This can be found by following the website URL or QR code on page 1 of this document.

Features and Options

As shown in Figure 1, 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.

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.

Mounting the Transmitter

DIN Rail Mounting
If the STT700 is to be installed on DIN Rail 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.

The DIN Rail needs to be connected to Earth Ground, refer to STT700 SmartLine transmitter user’s manual, #34-TT-25-17.

Uninstalling/Installing EU Meter from Housing
EU Meter:

Remove the EU METER from the mounting bracket.
Unfasten the 2 mounting screws.
Remove the bracket. To put the EU meter back follow the above sequence in the reverse order.

Uninstalling/Installing Standard Display from Housing

Standard Display:

Loosen the bracket screws
Move the display in clockwise direction till the STT700 connections are exposed
Slide and remove the cable joint from the display panel bracket
Disconnect the cables from the display panel and STT700 transmitter
Remove the Standard Display from the bracket. To reinstall the Standard Display reverse the above sequence.

Housing Cover and O Ring:

Review O-ring condition & replace, if damaged. New O-ring can be ordered from spare parts list.
Apply O-ring lubricant to the end cap O-ring. Relax O-ring twists, if any. Assemble housing cover with sufficient torque for securing against IP.

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

Table 2: Mounting Dimensions

Dimensions	Aluminum (field mount housing)
	A
Without integral meter	70 mm [2.76 inch]
With integral meter	127 mm [5.00 inch]

Spring Loading
Spring loading is available worldwide with direct head mounting. In North America, the spring loading is typically included in the sensor/thermowell assembly and is available with all housings. For non-North American spring loading as shown in Figure 6, simply include the springs under the 33 mm pitch mounting screws, pass the screws through the module and sensor mounting plate and snap in the retaining circlip to the screws to hold the assembly together. Guide the sensor assembly through the housing sensor entry and screw down the 33 mm screws until the limit is reached as the sensor presses against the bottom of thermowell.

For wall or 2” pipe mounting, the temperature sensor can be remote from the STT700 field mount housing or integral to the housing. For remote installations, the sensor wiring should be run in shielded, twisted pair wiring and connected via one of the housing wiring entries. For explosion proof/flameproof installations, ensure that the cable entries are fitted with flameproof adaptors and that the wiring grade complies with local standards.

For more details on wiring and dimensions for Aluminum Direct head and Cast iron Direct head refer to STT700 SmartLine transmitter user’s manual,

34-TT-25-17.

Wiring Connections and Power Up

Summary
The transmitter is designed to operate in a two-wire power/current loop with loop resistance and power supply voltage within the HART and DE operating ranges shown in Figure 7.

Loop wiring is connected to the transmitter by simply attaching the positive (+) and negative (–) loop wires to the positive (+) and negative (–) terminals on the transmitter terminal block in the electronics housing shown in Figure 9. Route the wires through the pre-molded channels on the connector cap. Connect the loop power wiring shield to earth ground only at the power supply end. Note that loop-power for this transmitter is not polarity-sensitive.

This transmitter uses the two mounting screws to connect it to earth ground. Grounding the transmitter for proper operation is required, as doing so tends to minimize the possible effects of noise on the output signal and affords protection against lightning and static discharge. An optional lightning protection module is available for use in areas that are highly susceptible to lightning strikes. As noted above, the loop power wiring shield should only be connected to earth ground at the power supply end.

Wiring must comply with local codes, regulations and ordinances. Grounding may be required to meet various approval body certification, for example CE conformity. Refer to the STT700 SmartLine Transmitter User’s Manual 34-TT-25-17 for details.

For HART and DE the transmitter is designed to operate in a two-wire power/current loop with loop resistance and power supply voltage within the operating range; see Figure 9. With an optional remote meter, the voltage drop for this must be added to the basic power supply voltage requirements to determine the required transmitter voltage (VXMTR) and maximum loop resistance (RLOOP MAX). Additional consideration is required when selecting intrinsic safety barriers to ensure that they will supply at least minimum transmitter voltage (VXMTR MIN), including the required 250 ohms of resistance (typically within the barriers) needed for digital communications.

Wiring Variations

The above procedures are used to connect power to a transmitter. For loop wiring and external wiring, detailed drawings are provided for transmitter installation in non-intrinsically safe areas and for intrinsically safe loops in hazardous area locations. This procedure shows the steps for connecting power to the transmitter. The screw terminals suitable for wirings up to (16AWG) – Shielded, twisted-pair cable such as Belden 9318 or equivalent must be used for all signal/power wiring.
Note : If solid core wire is used strip insulation 1/4 in (6 mm). Once inserted under the square washer the stripped portion should be contained under the square washer. If multi-stranded wire is used, a ferrule is to be used and the stripped wire should be in the insulated portion of the ferrule. The ferrule can be also be used on the solid core wire.

The cable shield must be connected at only one end of the cable. Connect it to the power supply side and leave the shield insulated at the transmitter side. After wiring the Transmitter as outline in the next sections, torque the screws to 1.1 Nm (10 lb-in).

Grounding and Lightning Protection
Connect a wire from the mounting screws to earth ground to make the protection effective. Use a size 8 AWG or (8.37mm2) bare or green covered wire for this connection. For ungrounded thermocouple, mV, RTD or ohm inputs, connect the input wiring shield(s) to the same earth ground connection. For grounded thermocouple inputs, connect the internal ground connection shown in Figure 9 to the same earth ground as used by the thermocouple. As noted above, the loop power wiring shield should only be connected to earth ground at the power supply end. For DE, the burnout direction needs to be selected in the hardware and this will be detected at power on time.

Input Sensor Wiring
Connect the input sensors as shown in Figure 10 below: RTD Thermocouple, mV, Ohm and Millivolt connections.

The single sensor connections can also be used on a dual input transmitter when a second input is not required. In this case, it is recommended that the second input be configured to none in software. In case of RTD type being configured to 4-wire, this is automatically done.

Explosion-Proof Conduit Seal
When installed as explosion proof in a Division 1 Hazardous Location, keep covers tight while the Transmitter is energized. Disconnect power to the Transmitter in the non-hazardous area prior to removing end caps for service. When installed as non-incendive equipment in a Division 2 hazardous location, disconnect power to the Transmitter in the non-hazardous area, or determine that the location is non-hazardous before disconnecting or connecting the Transmitter wires. Transmitters installed as explosion proof in Class I, Division 1, Group A Hazardous (classified) locations in accordance with ANSI/NFPA 70, the US National Electrical Code, require a LISTED explosion proof seal to be installed in the conduit, within 18 inches (457.2 mm) of the transmitter.

LIGHTNING PROTECTOR
This device is designed to give the SmartLine temperature transmitter maximum protection against surges such as those generated by lightning strikes. The lightning protector mounts right on the top of the STT700 terminal block, providing easy field wiring and also protection for the EU meter if used. For more details refer to STT700 SmartLine temperature transmitter user’s manual,

34-TT-25-17.

Installation

If an EU meter is used, remove the shunt on the Lightning Protector. In all other cases, the shunt must be present.
If Standard Display is used, no need to remove the shunt.
Remove the cover/cap of the housing (if applicable). The device fits on the top of the transmitter module terminal block and the transmitter output screws (+ and -) fix mechanically the device.
If Standard Display is used, remove the cover of the housing and connect the display cable to the 8-Pin connector provided on the transmitter.
Attach the grounding wire to the ground screw in the housing. Connect a wire from the transmitter enclosure to local earth ground. Use size 14 AWG or 2.0mm2 bare or green covered wire.
If an EU meter is used, wire according to Figure 14
If Standard Display is used, wire according to Figure 15.
Connect the 4 – 20mA loop to the + and – terminal screws of the surge protection and close the cap of the housing.

Appendix A. PRODUCT CERTIFICATIONS

A1. Safety Instrumented Systems (SIS) Installations
For Safety Certified Installations, please refer to STT700 Safety Manual

34-TT-25-05 for installation procedure and system requirements.

A2. China RoHS
China RoHS compliance information is located here: (Pending) https://www.honeywellprocess.com/library/support/Public/Documents/50136434.pdf

A4. Hazardous Locations Certifications

Class I, Division 1, Groups A, B, C, D; T6.. T4

Class I Zone 0 AEx ia IIC T6.. T4

|

Note 2

Class I Zone 2 AEx ec IIC T6..T4

| Note 2

for “ic”

| T5: -40oC to +55oC

T4: -40oC to +85oC

| | Gc| |
| | Class I Zone 2 AEx ic IIC T6..T4| |
FM| | Gc| |
Approvals

TM (USA)

| | Intrinsically Safe

Certificate: FM17US0112X

C, D; Class II, Division 1, Groups E, F, G; Class III, Division 1:

T6..T4

|

Note 2

T6..T5 Gb

| Note 1| T6: -40oC to +65oC

T5: -40oC to +85oC

AGENCY

| MSG

Code

|

TYPE OF PROTECTION

| Electrical Parameters| Ambient Temperature
---|---|---|---|---|---
| | Intrinsically Safe| |
| | Certificate: 70113941| |
| | Class I, Division 1, Groups A, B,

C, D; T4

Class I Zone 2 AEx ic IIC T4 Gc

| Note 2 for

“ic”

CSA-

Canada and USA

| | Ex db IIC T6..T5 Gb

Class 1, Zone 1, AEx db IIC T6..T5 Gb

Dust-Ignition Proof:

|

Note 1

| T6: -40oC to +65oC

T95oC/T5:-40oC to

+85oC

Class I Zone 2 AEx nA IIC T4 Gc

| Note 2 for

“ic”

Standards:
CSA C22.2 No. 0-10: 2015; CSA 22.2 No. 25: 2017; CSA C22.2 No. 30- M1986 (reaffirmed 2016); CSA C22.2 No. 94.2:2015; CSA C22.2 No. 61010-1: 2012; CSA-C22.2No.157-92 (reaffirmed 2016); C22.2 No. 213: 2016; C22.2 No. 60529:2016; C22.2 No. CSA 60079-0:2015; C22.2 No.60079-1: 2016; C22.2 No. 60079-11: 2014; C22.2 No. 60079-15: 2016; C22.2 No. 60079-31: 2015; ANSI/ ISA 12.12.01 : 2015 ; FM 3600: 2011; ANSI/ UL 61010-1 : 2016; ANSI/ UL 60079-0: 2013 ; FM 3616 : 2011; FM 3615 : 2011; ANSI/ UL 60079-1: 2015 ; ANSI/ UL 60079-31: 2015; ANSI/ UL 60079-11 : 2014; FM 3611: 2016; ANSI/ UL 60079-15 : 2013 ; ANSI/ UL 913: Edition 7; ANSI/ UL 50E: 2015.

|

AGENCY

| MSG

Code

|

TYPE OF PROTECTION

| Electrical Parameters| Ambient Temperature|

ATEX

|

A1

| Intrinsically Safe Certificate: SIRA

17ATE2162X

II 1 G Ex ia IIC T4 Ga

|

Note 2

|

T4: -40oC to +70oC

Non Sparking and Zone 2

Intrinsically Safe Certificate: SIRA 17ATE4161X

II 3 G Ex ec IIC T4 Gc

II 3 G Ex ic IIC T4 Gc

|

Note 1

Note 2 for “ic”

|

T4: -40oC to +70oC

A2

| Flameproof

Certificate: SIRA 17ATE2162X

II 2 G Ex db IIC T6..T5

Gb

II 2 D Ex tb IIIC T

95oC Db

|

Note 1

|

T6: -40oC to +65oC

T95oC/T5:-40oC to

+85oC

Intrinsically Safe Certificate: SIRA

17ATE2162X

II 1 G Ex ia IIC T4 Ga

|

Note 2

|

T4: -40oC to +70oC

Category 3 Increased

Safety Intrinsically Safe Certificate: SIRA 17ATE4161X

II 3 G Ex ec IIC T4 Gc II 3 G Ex ic IIC T4 Gc

|

Note 1

Note 2 for “ic”

|

T4: -40oC to +85oC

Enclosure: IP66/ IP67
Standards : EN 60079-0: 2012+A11 : 2013; EN 60079-1 :

2014 ;

EN 60079-11: 2012 ; EN 60079-7 : 2015 ; EN 60079-31 : 2014

AGENCY

| MSG

Code

|

TYPE OF PROTECTION

| Electrical Parameters|

Ambient Temperature

---|---|---|---|---
| | Intrinsically Safe| |
| | Certificate: SIR

17.0035X

Note 1

Note 2 for

“ic”

|
| | Certificate: SIR

17.0035X

17.0035X

AGENCY

| MSG

Code

|

TYPE OF PROTECTION

| Electrical Parameters| Ambient Temperature
---|---|---|---|---
|

P1

| Intrinsically Safe Certificate: P417399/1

Ex ia IIC T4 Ga

|

Note 2

| T4: -40oC to

+70oC

P2

| Certificate: P417399/1

Ex db IIC T6..T5 Gb

| Note 1| +65oC

T5: -40oC to

+85oC

Intrinsically Safe

Certificate: P417399/1 Ex ia IIC T4 Ga

|

Note 2

| T4: -40oC to

+70oC

GYJ18.1420X

| Note 2| T4: -40oC to +70

oC

Ex ec IIC T6..T4 Gc

|

Note 1

Note 2 for

“ic”

|

T4: -40oC to +85

oC

Ex db IIC T6..T5 Gb

| Note 1| +65oC

T95oC/T5: -40oC

GYJ18.1420X

| Note 2| T4: -40oC to

+70oC

GYJ18.1420X

| Note 2| T4: -40oC to

+85oC

AGENCY

| MSG

Code

|

TYPE OF PROTECTION

| Electrical Parameters| Ambient Temperature
---|---|---|---|---
| | Intrinsically Safe| |
| | Certificate: XPL

18.0865X

Note 1

Note 2 for

“ic”

|
| | Certificate: XPL

18.0865X

South Africa

| | Flameproof Certificate: XPL 18.0865X

Ex db IIC T6..T5 Gb

Ex tb IIIC T 95oC Db

|

Note 1

| T6: -40oC to

+65oC

T95oC/T5: -40oC to

+85oC

S2

| Certificate: XPL

18.0865X

Notes

Operating Parameters:
4-20 mA/HART (Loop Terminal) – Voltage= 10.58 to 35 V, Current = 4-20 mA Normal (3.8 – 21.5 mA Faults)
Intrinsically Safe Entity Parameters
For details see Control Drawing.

A.5 WARNINGS and Cautions:
Intrinsically Safe and Non-Incendive Equipment:
WARNING : SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR USE IN HAZARDOUS LOCATIONS.

Explosion-Proof/ Flameproof:
WARNING : DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT

Non-Incendive Equipment:
WARNING : DO NOT OPEN WHEN AN EXPLOSIVE

ATMOSPHERE MAYBE PRESENT
All Protective Measures:
WARNING : FOR CONNECTION IN AMBIENTS ABOVE 60oC. USE WIRE RATED 105oC.

A.6 Conditions of Use” for Ex Equipment”, Hazardous Location Equipment or “Schedule of Limitations”:
The installer shall provide transient over-voltage protection external to the equipment such that the voltage at the supply terminal of the equipment does not exceed 140% of the voltage rating of the equipment.
Intrinsically Safe: Must be installed per drawing 50133855
Division 2: This equipment is suitable for use in a Class I, Division 2, Groups A, B, C, D; T4 or Non-Hazardous Locations Only.

Transmitter only Selection:
For US Installations: The transmitter is to be installed within an enclosure with a minimum degree of protection of IP54 in accordance with ANSI/ISA 60079-15 and in a tool-secured enclosure which meets the requirements of ANSI/ISA 60079-0 and ANSI/ISA 60079-15 and the ultimate application.

For ATEX or IECEx: The transmitter is to be installed within an enclosure with a minimum degree of protection of IP54 in accordance with EN/ IEC 60079-7 and in a tool-secured enclosure which meets the requirements of EN/ IEC 60079-0 and EN/ IEC 60079-15 and the ultimate application.

Transmitter in Enclosure Selections:
Consult the manufacturer for dimensional information on the flameproof joints for repair. Painted surface of the Aluminum Enclosure may store electrostatic charge and become a source of ignition in applications with a low relative humidity less than approximately30% relative humidity where the painted surface is relatively free of surface contamination such as dirt, dust or oil. Cleaning of the painted surface should only be done with a damp cloth. The enclosure is manufactured from low copper aluminum alloy. In rare cases, ignition sources due to impact and friction sparks could occur. This shall be considered during Installation, particularly if equipment is installed a Zone 0 location. If a charge-generating mechanism is present, the exposed metallic part on the enclosure is capable of storing a level of electrostatic that could become Incendive for IIC gases. Therefore, the user/ installer shall implement precautions to prevent the buildup of electrostatic charge, e.g. earthing the metallic part. This is particularly important if equipment is installed a Zone 0 location. For Installation of the NPT Plug or Adapter follow instructions as outlined in 34-XY-33-03.

A.7 Control Drawing

Sales and Service
For application assistance, current specifications, pricing, or name of the nearest Authorized Distributor, contact one of the offices below.

ASIA PACIFIC (TAC) hfs-tac-support@honeywell.com

Australia Honeywell Limited, Phone: +(61) 7-3846 1255 ,
Toll Free 1300-36-39-36,
Toll Free Fax: 1300-36-04-70

China – PRC – Shanghai, Honeywell China Inc.
Phone : (86-21) 5257-4568,
Fax : (86-21) 6237-2826

Singapore , Honeywell Pte Ltd.
Phone : +(65) 6580 3278.
Fax : +(65) 6445-3033

South Korea , Honeywell Korea Co Ltd.
Phone :+(822)799 6114.
Fax :+(822) 792 9015

EMEA ,
Phone : + 80012026455 or +44 (0)1202645583.
Email : (Sales) FP-Sales-Apps@Honeywell.com
or (TAC) hfs-tac-support@honeywell.com
Web : Knowledge Base search engine
http://bit.ly/2N5Vldi

AMERICAS , Honeywell Process Solutions,
Phone : (TAC) 1-800-423-9883 or 215/641-3610.
( Sales ) 1-800-343-0228.
Email : (Sales) FP-Sales-Apps@Honeywell.com
or (TAC) hfs-tac-support@honeywell.com
Web : Knowledge Base search engine http://bit.ly/2N5Vldi.

WARRANTY/REMEDY
Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application.

For more information
To learn more about SmartLine transmitters,
visit https://process.honeywell.com/
Or contact your Honeywell Account Manager
Process Solutions
Honeywell
1250 W Sam Houston Pkwy S
Houston, TX 77042
Honeywell Control Systems Ltd
Honeywell House, Skimped Hill Lane
Bracknell, England, RG12 1EB.

Shanghai City Centre, 100 Jungi Road
Shanghai, China 20061
https://process.honeywell.com/