2-40
Definition of flowmeter control board J1
Pin No. Signal Name Description
1) 5V Not connected
2) GND Ground
3) Key Key signal
4) GND Ground
2.1.8 Gas parameter system
2.1.8.1 Infrared communication board
Infrared communication board offers power supply to module rack module, and receives
parameters monitored by AG module, CO2 module and BIS module, and then send these
parameters to main control board through series port.
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