Description
Technical Specifications: Supported Sensors: Pt100 (DIN/JIS), Ni120, Cu10, Cu50 RTD; Input Channels: Multiple differential input channels; Resolution: 16-bit; Operating Temperature: -40°C to +85°C; Power Supply: 24VDC; Common Mode Voltage: ±250VDC/VAC RMS; Common Mode Rejection Ratio: 120dB minimum
Function Features: Built-in sensor break detection; per-channel linearization; lead wire resistance compensation; channel fault self-diagnosis; UCN network communication interface
Application Scenarios: Industrial process temperature monitoring, environmental control systems, thermal equipment monitoring, chemical and petrochemical plant temperature measurement
Performance Parameters: Temperature measurement accuracy ±0.65°C for Pt100; scan rate 1 second per channel; lead wire resistance compensation up to 25Ω per wire
Material Composition: Precision reference resistor network, instrumentation amplifier, isolated A/D converter, metal shielding housing, industrial grade PCB
Structural Features: Rack plug-in module; terminal block for field sensor wiring; front panel status indicators; backplane edge connector
Working Principle: Measures resistance change of RTD sensors through constant current excitation; performs lead wire compensation and linearization; converts resistance values to digital temperature data and transmits to DCS controller via UCN bus
Installation Requirements: Use 3-wire or 4-wire RTD connection for highest accuracy; route sensor cables away from power cables; maintain stable ambient temperature at terminal block; avoid installation near heat sources
Usage Notes: Verify RTD sensor type matches module configuration; check sensor break alarms regularly; perform periodic calibration checks; observe ESD precautions during module handling
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