1C31179G02 high-precision analog input module

1C31179G02 is a high-precision analog input module developed by Emerson (originally Westinghouse) for its Ovation Distributed Control System (DCS). It is specialized in collecting and converting continuous analog signals from industrial field devices (such as pressure transmitters, temperature sensors, and flow meters) into digital signals that the Ovation controller can process. With exceptional measurement accuracy, strong anti-interference capabilities, and reliable performance, it is a core component for precise process parameter acquisition in harsh industrial environments. Below is its detailed information:

1. Core Technical Specifications

Parameter Category	Specific Details
Input Channel Configuration	8 independent isolated analog input channels; each channel is electrically isolated from others and the system backplane, eliminating cross-interference and ensuring signal integrity.
Supported Input Signals	- Current signals: 4–20mA DC (two-wire/three-wire transmitters, input impedance ≤250Ω); 0–20mA DC (configurable via software).- Voltage signals: 0–10V DC, 1–5V DC, ±5V DC, ±10V DC (input impedance ≥100kΩ, compatible with voltage-type sensors and transmitters).- Thermocouple (TC) signals: J, K, T, E, R, S, B (built-in cold-junction compensation, no external compensation resistor required).- RTD signals: Pt100 (385Ω/°C), Pt1000, Ni100 (supports 2-wire, 3-wire, 4-wire wiring; 3/4-wire configurations eliminate lead resistance errors).
Measurement Accuracy & Stability	- Current/voltage signals: ±0.05% of full scale (FS) at 25°C; ±0.1% FS over the operating temperature range (-40°C to 70°C).- TC signals: ±0.1°C (for J/K/T/E types at 0–500°C); ±0.2°C (for R/S/B types at 0–1000°C).- RTD signals: ±0.05°C (for Pt100 at 0°C); ±0.1°C over the operating temperature range.- Temperature drift: ±0.001% FS/°C (minimizes accuracy loss caused by ambient temperature changes in control cabinets).- Long-term stability: ≤±0.05% FS/year (reduces calibration frequency and maintenance costs).