Honeywell STT850 SmartLine Temperature Transmitter
Product Overview
The Honeywell STT850 temperature transmitter belongs to Honeywell SmartLine® series. It converts signals from on-site thermocouples and RTDs into standard 4-20mA output, perfectly suited for demanding temperature measurement scenarios.We are highly experienced with Honeywell products, providing favorable prices and comprehensive customer service.
Core features include
Industry leading performance
.Digital Accuracy up to +/- 0.10 Deg C for RTD
.Stability up to +/- 0.01% of URL per year for ten years
. 125 mSec update time for single input models
. 250 mSec update time for dual input models
Communications/Output Options:
. 4-20 mA dc
.Honeywell Digitally Enhanced (DE)
. HART ® (version 7.0)
. FOUNDATION™ Fieldbus compliant to ITK 6.1.2
♦Honeywell STT850 offers ±0.10°C RTD accuracy, 0.01% annual stability, 125/250ms update, and supports 4‑20mA, DE, HART® 7.0, and FOUNDATION™ Fieldbus (ITK 6.1.2).
Honeywell STT850 SmartLine Temperature Transmitter Technical Summary Sheet
| Product Name | STT850 SmartLine Temperature Transmitter |
| Manufacturer | Honeywell |
| Core Function | Smart temperature transmitter with multiple protocol support |
| Input Type | Universal Input (Single / Dual Input) |
| Housing Material | Polyester Powder Coated Aluminum / 316 Stainless Steel |
| Protection Class | Type 4X, IP66, IP67 |
The image below displays a genuine photograph of the STT850 unit, specifically model STT850-S-0-G-AHB-11S-A-00A0-00-0000, accompanied by a straightforward breakdown of its configuration code.
| Code Position | Code Value | Detailed Description |
|---|---|---|
| Sensor Input | S | Single Sensor Input |
| Safety Approval | 0 | No Approvals Required |
| Housing & Connection | G | Polyester Coated Aluminum Housing, 1/2″ NPT Electrical Interface |
| Output & Protocol | AHB | 4-20mA Analog Output + HART 7.0 Communication Protocol |
| Diagnostic & SIL Level | 11S | Standard Diagnostics, Factory Standard Configuration |
| Local Display & Operation | A | No Local Display, with Zero/Span Adjustment Buttons |
| Fail Mode & Write Protect | 00A0 | Fail High (>21mA), Standard 3.8~20.8mA Output Range, Write Protect Disabled |
| Mounting Accessories | 00 | No Mounting Bracket & Adapter |
| Calibration & Options | 0000 | Factory Standard Calibration, No Custom Options |
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