1C31166G01 high-precision temperature input module

1C31166G01 is a high-precision temperature input module developed by Westinghouse (now integrated into Emerson Automation Solutions) for its Ovation Distributed Control System (DCS). It is specifically designed to acquire and process low-level temperature signals from thermocouples (TC) and resistance temperature detectors (RTD), serving as a critical component for direct temperature monitoring in harsh industrial environments such as power plants, petrochemical facilities, and metallurgical sites. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Input Channels	8 independent isolated analog input channels. Each channel is electrically isolated from others and the system backplane, eliminating cross-interference and ensuring the accuracy of temperature signal acquisition.
Supported Input Signals	- Thermocouples (TC): Compatible with common industrial types, including J, K, T, E, R, S, and B, covering a wide temperature range from -200°C (T-type, low-temperature applications) to 1800°C (B-type, high-temperature smelting).- Resistance Temperature Detectors (RTD): Supports Pt100 (385Ω/°C), Pt1000, and Ni100, with 2-wire, 3-wire, and 4-wire wiring options. 3/4-wire configurations eliminate lead resistance errors, critical for high-precision measurements (e.g., reactor wall temperature).- Optional: 4–20mA DC current signals (for connecting temperature transmitters, expanding compatibility with indirect temperature measurement setups).
Measurement Accuracy	- TC signals: ±0.1°C (for J/K/T/E types at 0–500°C) + ±0.1% of reading, ensuring precise capture of temperature fluctuations in key processes.- RTD signals: ±0.05°C (for Pt100 at 0°C) + ±0.01% of reading, meeting ultra-high-precision requirements for sensitive temperature control.- Temperature drift: ±0.001°C/°C (module self-temperature effect), minimizing accuracy loss due to ambient temperature changes in control cabinets.