Woodward 8903-038 Analog Input Expansion Board

Product Brief Introduction The Woodward 8903-038 analog input expansion board is a matched accessory for the 8903 governor. It expands extra 4-20mA analog input channels to collect auxiliary process signals such as temperature and pressure.
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Technical Specifications 24VDC auxiliary power, multi-channel 4-20mA current input. Operating temperature: -40℃ ~ +70℃.

Functional Features Analog signal acquisition, signal filtering, fault detection for open loop, data transmission to governor mainboard.

Application Scenarios Auxiliary parameter monitoring of 8903 controlled generator sets, exhaust temperature and oil pressure signal collection.

Performance Parameters Good signal linearity, low measurement drift, simple calibration procedure.

Structural Characteristics Plug-in expansion board, channel status LED indicators.

Working Principle Field transmitter signals enter the expansion board, after conditioning and conversion, measurement data is sent to the main governor board through internal interface.

Installation Requirements Install inside the same control cabinet with the governor, separate analog signal cables from power cables.

Usage Notes Calibrate each channel zero and span, check signal cable insulation regularly.




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