Honeywell SmartLine STT750 Smart Temperature Transmitter with HART

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Smart temperature transmitter, single universal input (RTD, thermocouple, mV, or Ohm), 4-20 mA output and HART communications, 125 mSec update time, digital accuracy to ±0.14° C (Pt100Ω)

Honeywell SmartLine STT750 temperature transmitters are suitable for a wide range of control and safety applications where temperature measurement is critical to performance. Built on the SmartLine modular platform, they include polarity insensitive wiring connections and built-in diagnostics for low total cost of ownership and easy maintenance.

The STT750 replaces the retired Honeywell STT3000 family's STT250 HART® field-mount temperature transmitter.

  • Single universal input for RTDs, thermocouples, mV, and Ohms
  • Digital accuracy up to 0.14°C for RTD
  • Stability up to ±0.01% upper range limit per year for 10 years
  • 125 mSec update time
  • Up to 8 display screens, two line x 16 character, displays up to six data points, and can rotate 0°, 90°, 180°, or 270° position for optimal visibility
  • Integral display and three-button configuration for zero, span, and other options
  • Built-in galvanic isolation and sensor break detection
  • Comprehensive on-board diagnostics for transmitter and sensors
  • 4-20 mA DC and HART7 communications output for configuration
  • Dual compartment housing
  • Full compliance to SIL 2/3 requirements
  • FM, CSA, ATEX, IECEx approvals

Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.

Make one selection from each table section below to build your complete model number.
A complete STT750 model number looks like this: STT750-S-0-_-_ _ _- _ _ _ - _ - _ _ _ _ - _ _ - 0000

DescriptionCatalog NumberAvailability
Temperature Transmitter, Universal Single Input, 4-20 mA and HART 7 Output, Standard Diagnostics, Factory Standard ConfigurationSTT750-S-0-
FM ApprovedA-
CSA ApprovedB-
ATEX ApprovedC-
IECEx ApprovedD-
Aluminum Housing, 1/2" NPT ConnectionAH _ -
Aluminum Housing, 1/2" NPT Connection, Lightning ProtectionCH _-
316 Stainless Steel Housing, 1/2" NPT ConnectionEH _ -
316 Stainless Steel Housing, 1/2" NPT Connection, Lightning ProtectionGH _ -
InterfaceNo Indicator, No Configuration Buttons_ _ 0-
No Indicator, Zero/Span Configuration Buttons_ _ A-
Digital Indicator, No Configuration Buttons_ _B-
Digital Indicator, Configuration Button Interface_ _ C-
ConfigurationNo Write Protection, Fail High, Standard High/Low Output Limits11S
No Write Protection, Fail Low, Standard High/Low Output Limits12S
Write Protection, Fail High, Standard High/Low Output Limits13S
Write Protection, Fail Low, Standard High/Low Output Limits14S
CalibrationFactory Standard Single CalibrationA-
Custom Single Calibration (Unit Data Required)B-
None0 _ _ _-
Carbon Steel Flat Pipe Mounting Bracket1 _ _ _-
Carbon Steel Angle Pipe Mounting Bracket3 _ _ _-
Carbon Steel Wall Mounting Bracket5 _ _ _-
316 SS Flat Pipe Mounting Bracket2 _ _ _-
316 SS Angle Pipe Mounting Bracket4 _ _ _-
316 SS Wall Mounting Bracket6 _ _ _-
TagNone_ 0 _ _-
Wired Stainless Steel Tag (Up to 4 Lines, 26 Char Ea.)_ 1 _ _-
Conduit Plugs
and Connectors
None_ _ A0-
1/2" NPTM to 3/4" NPTF 316 SS Certified Conduit Adapter_ _ A2-
1/2" NPT 316 SS Certified Conduit Plug_ _ A6-
1/2" NPT Minifast® 4-Pin (Not for Explosion-Proof Use)_ _ A8-
Calibration Test Report, Certificate of ComplianceF1-
SIL 2/3 CertificationFE-j

  j   Requires write protection option for SIL compliance.

More Information
SIL-Rated Yes

To build your complete part number, make a selection from each table section below. Your completed model and its price will appear below the table. If you don't see the options you need, call us.

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