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smartline temperature transmitters

SmartLine STT850

STT850 temperature transmitter is designed to deliver very high performance across varying ambient temperatures. The total installed accuracy level of the transmitter, allows the STT850 to replace virtually any transmitter.

Overview
The SmartLine STT850 temperature transmitters offer the following features:
  • Digital accuracy up to 0.1°C for RTD
  • Stability up to 0.01% of URL per year for ten years
  • 130 ms update time
  • Sensor matching facility for higher accuracy
  • Built-in digital output option
  • Sensor health trend through advanced display  
  • Full compliance with SIL 2/3 requirements
  • Lifetime 15-year warranty.​
Specifications

Processing & Performance Metrics

  • Accuracy
    • Digital: up to ±0.1 deg C; Output D/A: ±0.005% of span (Pt100)

I/O Capabilities

  • Update Time
    • 125 ms (Single Input), 250 ms (Dual Input)
  • Galvanic Isolation
    • 2000 VDC (1400 Vrms)
  • Configuration
    • Integral Three-Button, Handheld (Versatilis, HART, DE), PC (SCT 3000, Field Device Manager, FDM Express)

Electrical Specifications

  • Supply Voltage
    • DE: 13.8 to 42.4 VDC
    • FF: 9 to 32 VDC
    • HART: 11.8 to 42.4 VDC (IS limited to 30 VDC)
  • Output Options
    • 4 to 20 mA DC, HART® (v7.0), Honeywell Digitally Enhanced (DE), FOUNDATION™ Fieldbus
  • Input Type
    • RTD (2, 3, 4 wire), Thermocouple, Millivolt, Ohm voltage direct current

Environmental Conditions

  • Stability
    • ±0.01% of URL/year for 10 years
  • Relative Humidity
    • 0 to 100% RH
  • Operating Temperature Range
    • -40 to 85 deg C
  • Load Resistance
    • DE: 0 to 1300 Ω
    • FF: 0 to 1400 Ω
    • HART: 0 to 1400 Ω
  • Ambient Temperature Range
    • -40 to +85 deg C (-40 to +185 deg F) Rated, -55 to +120 deg C (-67 to +248 deg F) Storage

Applications & Compatibility

  • Mounting
    • Wall, Pipe, DIN Rail, Direct Sensor Head

Material Specifications

  • Housing Material
    • Aluminum or 316 Stainless Steel, IP66/IP67, Type 4X

Mechanical & Physical Properties

  • Enclosure
    • IP66, IP67 (NEMA 4X)

Software & Interface

  • Display
    • Modular LCD (basic or advanced), 2 lines, 6 digits, Field Configurable, Multiple Units ( deg C, deg F, deg R, Kelvin, mV, Ohm)

Standards & Certifications

  • Approvals
    • SIL 2/3: IEC 61508, EMC: (EN 61326-1, EN 61326-3-1), Marine: (ABS, DNV, LR, BV), Explosion Proof and Intrinsic Safety: (FM, CSA, ATEX, IECEx, NEPSI, KOSHA, INMETRO, SAEx, EAC, CCoE)

Processing & Performance Metrics

  • Accuracy
    • Digital: up to ±0.1 deg C; Output D/A: ±0.005% of span (Pt100)

I/O Capabilities

  • Update Time
    • 125 ms (Single Input), 250 ms (Dual Input)
  • Galvanic Isolation
    • 2000 VDC (1400 Vrms)
  • Configuration
    • Integral Three-Button, Handheld (Versatilis, HART, DE), PC (SCT 3000, Field Device Manager, FDM Express)

Electrical Specifications

  • Supply Voltage
    • DE: 13.8 to 42.4 VDC
    • FF: 9 to 32 VDC
    • HART: 11.8 to 42.4 VDC (IS limited to 30 VDC)
  • Output Options
    • 4 to 20 mA DC, HART® (v7.0), Honeywell Digitally Enhanced (DE), FOUNDATION™ Fieldbus
  • Input Type
    • RTD (2, 3, 4 wire), Thermocouple, Millivolt, Ohm voltage direct current

Environmental Conditions

  • Stability
    • ±0.01% of URL/year for 10 years
  • Relative Humidity
    • 0 to 100% RH
  • Operating Temperature Range
    • -40 to 85 deg C
  • Load Resistance
    • DE: 0 to 1300 Ω
    • FF: 0 to 1400 Ω
    • HART: 0 to 1400 Ω
  • Ambient Temperature Range
    • -40 to +85 deg C (-40 to +185 deg F) Rated, -55 to +120 deg C (-67 to +248 deg F) Storage

Applications & Compatibility

  • Mounting
    • Wall, Pipe, DIN Rail, Direct Sensor Head

Material Specifications

  • Housing Material
    • Aluminum or 316 Stainless Steel, IP66/IP67, Type 4X

Mechanical & Physical Properties

  • Enclosure
    • IP66, IP67 (NEMA 4X)

Software & Interface

  • Display
    • Modular LCD (basic or advanced), 2 lines, 6 digits, Field Configurable, Multiple Units ( deg C, deg F, deg R, Kelvin, mV, Ohm)

Standards & Certifications

  • Approvals
    • SIL 2/3: IEC 61508, EMC: (EN 61326-1, EN 61326-3-1), Marine: (ABS, DNV, LR, BV), Explosion Proof and Intrinsic Safety: (FM, CSA, ATEX, IECEx, NEPSI, KOSHA, INMETRO, SAEx, EAC, CCoE)
  • Accuracy : Digital: up to ±0.1 deg C; Output D/A: ±0.005% of span (Pt100)
  • Update Time : 125 ms (Single Input), 250 ms (Dual Input)
  • Supply Voltage : DE: 13.8 to 42.4 VDC|FF: 9 to 32 VDC|HART: 11.8 to 42.4 VDC (IS limited to 30 VDC)
  • Stability : ±0.01% of URL/year for 10 years
  • Relative Humidity : 0 to 100% RH
  • Output Options : 4 to 20 mA DC, HART® (v7.0), Honeywell Digitally Enhanced (DE), FOUNDATION™ Fieldbus
  • Operating Temperature Range : -40 to 85 deg C
  • Mounting : Wall, Pipe, DIN Rail, Direct Sensor Head
  • Load Resistance : DE: 0 to 1300 Ω|FF: 0 to 1400 Ω|HART: 0 to 1400 Ω
  • Input Type : RTD (2, 3, 4 wire), Thermocouple, Millivolt, Ohm voltage direct current
  • Housing Material : Aluminum or 316 Stainless Steel, IP66/IP67, Type 4X
  • Galvanic Isolation : 2000 VDC (1400 Vrms)
  • Enclosure : IP66, IP67 (NEMA 4X)
  • Display : Modular LCD (basic or advanced), 2 lines, 6 digits, Field Configurable, Multiple Units ( deg C, deg F, deg R, Kelvin, mV, Ohm)
  • Configuration : Integral Three-Button, Handheld (Versatilis, HART, DE), PC (SCT 3000, Field Device Manager, FDM Express)
  • Approvals : SIL 2/3: IEC 61508, EMC: (EN 61326-1, EN 61326-3-1), Marine: (ABS, DNV, LR, BV), Explosion Proof and Intrinsic Safety: (FM, CSA, ATEX, IECEx, NEPSI, KOSHA, INMETRO, SAEx, EAC, CCoE)
  • Ambient Temperature Range : -40 to +85 deg C (-40 to +185 deg F) Rated, -55 to +120 deg C (-67 to +248 deg F) Storage
Brochure
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
application/pdf 863.51 KB
7/1/2023
863.51 KB
1899308 HPS BRO Temperature Transmitter
application/pdf 2.01 MB
1/24/2024
2.01 MB
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
application/pdf 14.99 MB
1/29/2024
14.99 MB
Data Sheet
Name
Description
File Size
Date
Size
STT850 SmartLine Temperature Transmitter Technical Specifications 34-TT-03-14
application/pdf 2.15 MB
12/24/2025
2.15 MB
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
application/pdf 109.55 KB
10/31/2023
109.55 KB
This specification sheets contains the technical details of the STT850 temperature transmitter
application/pdf 1.46 MB
10/2/2024
1.46 MB
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
application/pdf 863.51 KB
7/1/2023
863.51 KB
STT850 SmartLine Temperature Transmitter Technical Specifications 34-TT-03-14
application/pdf 2.15 MB
12/24/2025
2.15 MB
1899308 HPS BRO Temperature Transmitter
application/pdf 2.01 MB
1/24/2024
2.01 MB
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
application/pdf 14.99 MB
1/29/2024
14.99 MB
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
application/pdf 109.55 KB
10/31/2023
109.55 KB
This specification sheets contains the technical details of the STT850 temperature transmitter
application/pdf 1.46 MB
10/2/2024
1.46 MB
Name
Description
File Size
Date
Size
Our SmartLine ST800 Pressure Transmitters include absolute pressure, gauge pressure, draft range pressure, flanged and remote seal transmitters.
863.51 KB
7/1/2023
1899308 HPS BRO Temperature Transmitter
2.01 MB
1/24/2024
Download the latest family brochure for SmartLine. This covers the new features of all Temperature, Pressure, Multivariable and many more transmitters that Honeywell has to offer.
14.99 MB
1/29/2024
STT850 SmartLine Temperature Transmitter Technical Specifications 34-TT-03-14
2.15 MB
12/24/2025
HART DTMs for ST 800, ST 700, SMV800, STT850, STT650, STT750, STT700, ST 3000, and STT 250 products. Device configuration parameters are organized under Configuration, Monitoring, Diagnostics and Maintenance giving a good user experience.
109.55 KB
10/31/2023
This specification sheets contains the technical details of the STT850 temperature transmitter
1.46 MB
10/2/2024
Name
Description
File Size
Date
Size
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