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Honeywell SmartLine STT850 Quick Start Manual
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Honeywell SmartLine STT850 Quick Start Manual

Temperature transmitter
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STT850/750 SmartLine Temperature Transmitter
Quick Start Guide
34-TT-25-04, Revision 12, August 2022
This document provides descriptions
and procedures for the Quick
Installation of Honeywell's family of
SmartLine Temperature Transmitters.
The SmartLine Temperature
Transmitter is available in a variety of
models for measuring Ohms, mV and
temperature from RTD's and
thermocouples.
For full details refer to the manuals
listed below for Protocols, User
Interface (HMI) Operation, Installation,
Configuration, Calibration,
Maintenance, Parts, Safety and
Approvals etc. including options.
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

QR Code
https://hwll.co/SmartLineHUB

Note:

This Quick Start Guide is for both STT850 and STT750 transmitters. Please note the
following do not apply to the STT750: Foundation Fieldbus, DE, Dual Inputs, Advanced
Display, Advanced Diagnostic, MID and Marine approvals.
nstallation
I
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.
Temperature extremes can affect display quality. The display can become unreadable at
temperature extremes; however, this is only a temporary condition. The display will again be
readable when temperatures return to within operable limits.
The display will show power up message as "SmartLine Temperature Transmitter". If there
are any critical fault messages on the display, then refer to the STT850 Temperature
transmitter user's manual (34-TT-25-03) document for recommended corrective actions and
different screen formats.

Features and options

The STT850 and STT750 are packaged in one major assembly: The Electronics Housing.
The elements in the Electronic Housing 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.
Electronics Housing with available options.
Figure 1: Electronics Housing Components
An optional 3-button assembly is located under the nameplate and provides a user interface
and operation capability without opening the transmitter to set up and make adjustments to
the transmitter.
Copyrights, Notices and Trademarks
Copyright 2022 by Honeywell
Revision 12, August 2022
Trademarks
SFC, SmartLine, STT850 are U.S.
registered trademarks of Honeywell
Inc.
™
HART® and FOUNDATION
Trademarks of Field COMM Group™.
Figure 1
shows the assemblies in the
STT850/750 Quick Start Guide

Table of Contents

URL .......................................................................................................... 1
Note:......................................................................................................... 1
Installation ................................................................................................ 1
Features and options ............................................................................... 1
Mounting the Transmitter ......................................................................... 1
Bracket Mounting ..................................................................................... 2
Optional Mounting Bracket ...................................................................... 2
Conduit Entry Plugs and Adapters .......................................................... 2
Wiring Connections and Power Up ......................................................... 2
Wiring Variations ...................................................................................... 3
connecting to the screw terminals. .......................................................... 3
Input Sensor Wiring ................................................................................. 3
Digital Output Wiring ................................................................................ 4
Write Protect Jumper on Foundation Fieldbus (FF) ................................ 5
Figures
Figure 1: Electronics Housing Components ............................................ 1
Figure 2: STT housing - Horizontal Wall Mounting ................................. 1
Figure 3 - Angle Bracket Pipe Mount - Horizontal & Vertical .................. 2
Figure 4: Pipe Mount - Horizontal & Vertical ........................................... 2
Figure 5: Flat and Angle Mounting Brackets secured to Horizontal or
Vertical Pipe ............................................................................................. 2
Figure 6: Electronic Housing Conduit Entries ......................................... 2
Figure 7: HART* and DE Transmitter Operating Ranges ....................... 2
Figure 8: Transmitter 9-Screw Terminal Board and Grounding Screw ... 3
Figure 9: HART*/DE/FF Single Input Wiring Diagram............................. 3
Figure 10: DE Dual Input Wiring Diagram ............................................... 3
Figure 11: HART/FF - Dual Input Wiring Diagram ................................. 3
Figure 12: HART/FF Dual Input Wiring Diagram, mixed sensors ........... 3
Figure 13: Digital Output Connections for mA Load (HART only) .......... 4
Figure 14: Digital Output Connections for PLC Counting Input (HART
only) ......................................................................................................... 4
Figure 15: Jumper Location HART/DE .................................................... 4
Figure 16: Jumper Settings ..................................................................... 4
Figure 17: Fieldbus Write Protect ............................................................ 5

Mounting the Transmitter

Transmitter models can be attached to a two-inch (50 millimeter) vertical or
horizontal pipe using Honeywell's optional angle; alternately you can use your own
bracket.
Honeywell's optional wall mounting bracket is also shown below:
For Housing without adaptor refer to Honeywell drawings 32306827 (No-Adaptor,
Pipe mount) and 32306828 (No-adaptor, Wall mount).
TRANSMITTER ENCLOSURE CAN BE ROTATED A TOTAL OF 90O FROM THE
STANDARD MOUNTING POSITION
Figure 2: STT housing - Horizontal Wall Mounting
1

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Summary of Contents for Honeywell SmartLine STT850

  • Page 1: Table Of Contents

    Transmitter models can be attached to a two-inch (50 millimeter) vertical or following do not apply to the STT750: Foundation Fieldbus, DE, Dual Inputs, Advanced horizontal pipe using Honeywell’s optional angle; alternately you can use your own Display, Advanced Diagnostic, MID and Marine approvals.

  • Page 2: Bracket Mounting

    Bracket Mounting If you are using an optional bracket, start with Step 1. Align the two mounting holes in the transmitter with the two slots in the mounting bracket and assemble the (2) M8 hex cap screws, (2) lock washers, and (2) flat washers provided. Rotate transmitter assembly to the desired position and torque the M8 hex cap screws to 27,0 Nm/20,0 Lb-ft maximum.

  • Page 3: Wiring Variations

    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. Wiring must comply with local codes, regulations and ordinances.

  • Page 4: Digital Output Wiring

    Explosion-Proof Conduit Seal Digital Output Wiring Digital Output is available only on STT850 HART transmitters. The Digital Output should not use the same power supply as used to support the 4-20mA transmitter output. See Figure 13 Figure 14. When installed as explosion proof in a Division 1 Hazardous Location, keep covers tight while the Transmitter is energized.

  • Page 5: Write Protect Jumper On Foundation Fieldbus (Ff)

    Appendix A. PRODUCT CERTIFICATIONS Write Protect Jumper on Foundation Fieldbus (FF) On Foundation Fieldbus transmitters there is no Failsafe jumper selection but there is A1. Safety Instrumented Systems (SIS) Installations a Write Protect jumper. For Safety Certified Installations, please refer to STT850/750 Safety Manual The bottom jumper sets the Write Protect.
  • Page 6 A3. Hazardous Locations Certifications Explosion proof, Certificate: 2689056: MSG TABLE TYPE OF COMM Electrical Ambient Class I, Division 1, Groups A, III/ AGENCY PROTECTION OPTION Parameters Temperature B, C, D; Explosion proof, T 95 C , T5: Ta= Dust Ignition Proof: Certificate: C to 85 Class II, Division 1, Groups E,...
  • Page 7 Flameproof, Sira 14ATEX2046X: T 95 C ,T5: Ta= Flameproof, SIR 14.0020X T 95 C ,T5: Ta= II 2 GD Ex db IIC T6..T5 Gb 4-20 mA/ C to 85 4-20 mA/ C to 85 Note 1 Note 1 Ex db IIC T6..T5 Gb DE/HART/FF T6: Ta= -50 C to...
  • Page 8 Apparatus Marked with Multiple Types of Protection A.6. Control Drawing The user must determine the type of protection required for installation the equipment. The user shall then check the box [ ] adjacent to the type of protection used on the equipment certification nameplate. Once a type of protection has been checked on the nameplate, the equipment shall not then be reinstalled using any of the other certification types.
  • Page 9 STT850/750 Quick Start Guide...
  • Page 10 STT850/750 Quick Start Guide...
  • Page 11 While we provide application assistance personally, through our literature and the South Korea, Honeywell Korea Co Ltd. Phone:+(822)799 6114. Fax:+(822) 792 9015 Honeywell web site, it is up to the customer to determine the suitability of the product in the application.

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Smartline stt750

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