1C31194G04 high-precision analog input module

1C31194G04 is a high-precision analog input module developed by Westinghouse (now integrated into Emerson Automation Solutions) for its Ovation Distributed Control System (DCS). It specializes in accurate acquisition, conditioning, and transmission of field analog signals (such as current and voltage signals from sensors/transmitters), providing reliable data support for industrial process control and monitoring in harsh environments. 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 to eliminate cross-interference and ensure signal purity.
Supported Input Signals	- Primary: 4–20mA DC current signals (compatible with most industrial transmitters, e.g., pressure, flow, level, and temperature transmitters).- Optional: 0–10V DC / 1–5V DC voltage signals (for low-power sensors or instruments with voltage output, such as pH meters and conductivity sensors).
Measurement Accuracy	- At 25°C (ambient temperature): ±0.1% of full scale (FS) + ±1/2 least significant bit (LSB), with a confidence level of 99.7%, ensuring high-precision data collection.- Temperature coefficient: ±0.002% FS/°C (in the range of -40°C to 70°C), minimizing accuracy drift caused by environmental temperature changes.
Resolution	14-bit ADC (Analog-to-Digital Converter), capable of capturing tiny fluctuations in analog signals (e.g., 0.001mA changes in 4–20mA signals), meeting the needs of fine process monitoring.
Sampling Rate	Minimum 20 samples per second per channel (configurable for 50/60Hz power frequency interference suppression), balancing real-time performance and anti-interference capability.
Power Supply	24V DC ±10% (power consumption ≤5W), fully compatible with Ovation DCS rack power modules (e.g., 1C31234G01), adapting to voltage fluctuations in industrial power grids.
Isolation Rating	- Channel-to-channel isolation: ≥1000V AC (1 minute).- Module-to-backplane isolation: ≥2500V AC (1 minute), effectively suppressing ground loops and electromagnetic interference (EMI) in complex industrial sites.
Physical & Environmental Parameters	- Dimensions: Standard Ovation module form factor, approx. 100mm × 80mm × 45mm (L×W×H); weight ~0.3kg, suitable for dense rack installation to save control cabinet space.- Operating temperature: -40°C to 70°C (adapts to high-temperature workshops, outdoor control cabinets, and humid industrial areas).- Storage temperature: -40°C to 85°C.- Relative humidity: 5%–95% RH (non-condensing), preventing moisture damage to internal circuits.