Description
GE IC200ALG325 Technical Specifications:
- Sensor Types: Platinum (Pt100, Pt1000), Nickel (Ni100, Ni120), Copper.
- Wiring Config: 2-wire, 3-wire, and 4-wire RTD support.
- Channels: 8 isolated inputs.
- Resolution: 15-bit.
- Excitation Current: Low-level constant current to prevent self-heating of the .
Functional Features:
- Lead Wire Compensation: 3-wire and 4-wire configurations automatically cancel out lead wire resistance errors.
- Burnout Detection: Detects open RTD elements and drives the output to a user-configurable upscale or downscale fault state.
- High Accuracy: Factory-calibrated for exceptional long-term stability.
- Flexible Ranges: Software-configurable temperature spans for each channel.
Application Scenarios:
- Precision temperature control in chemical reactors.
- Bearing and winding temperature monitoring in motors and generators.
- HVAC and environmental chamber control.
Performance Parameters:
- Accuracy: ±0.1% of full scale.
- Self-Heating: < 0.1°C at maximum excitation.
Material Composition & Structural Characteristics:
- Precision Resistors: 0.01% tolerance reference resistors for accurate excitation and measurement.
- PCB Layout: Guard rings and thermal isolation traces to prevent leakage currents and thermal gradients.
Working Principle: The module supplies a highly stable, low-magnitude constant current through the RTD. It measures the resulting voltage drop across the sensor. For 3-wire RTDs, it uses a second measurement lead to calculate and subtract the lead wire resistance. The precise resistance value is then converted to temperature using standard Callendar-Van Dusen equations.
Installation Requirements:
- Wire Matching: For 3-wire RTDs, ensure all three lead wires have identical length, gauge, and material to maintain cancellation accuracy.
- Separation: Keep wiring physically separated from power and motor cables.
Usage Precautions:
- Sensor Compatibility: Verify the RTD type and curve match the software configuration. Incorrect configuration will result in significant temperature errors.
- Moisture Protection: Seal unused RTD channels or terminate them with precision resistors to prevent noise pickup.
