Product Short Description
Product Brief Introduction
T8431C is the upgraded revised hardware universal analog input module supporting multiple sensor signal types without separate barrier modules for non-hazardous safe zone equipment. It accepts 4–20 mA transmitters, ±10 V voltage signals, RTD PT100 temperature sensors and thermocouple inputs, with triple redundant sampling architecture for SIL3 safety control systems. The C variant features enhanced EMC noise suppression circuitry for high-electrical-noise power plant environments.
Description
Core Technical Specifications
- Input Channel Count: Single multi-type analog channel per module with triple redundant sampling slices
- Supported Signal Types: 4–20 mA, 0–10 V, ±10 V, PT100 RTD, J/K/T type thermocouples
- ADC Sampling Bit Depth: 16-bit per redundant signal slice
- EMC Filter Upgrade: Configurable 50/60 Hz notch digital filter built-in for variable industrial mains interference
- Discrepancy Threshold: 128 digital counts per volt between redundant channel slices for fault alert
- Hardware Revision C Optimizations: Extended temperature range tolerance, improved surge transient suppression
Core Functional Features
- Software-selectable sensor signal type per channel without hardware reconfiguration
- Triple independent ADC sampling circuits to maintain full TMR fault tolerance
- Auto zero calibration routine for drift compensation of RTD and thermocouple temperature measurements
- Configurable high/low process trip alarm thresholds integrated with safety logic
- Front panel multi-color LED indicating channel healthy state, over-range and under-range sensor faults
Application Scenarios
Power plant boiler temperature/pressure monitoring, non-hazardous zone chemical reactor process measurement, water treatment plant safety level and flow transmitters, turbine vibration analog signal safety acquisition
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