Refrigerant Pressure Sensor / Switch: Testing and Inspection

INSPECTION

1. Measure the pressure of high pressure line by measuring voltage output between NO.1 and NO.2 terminals.




2. Inspect the voltage value whether it is sufficient to be regular value or not.

Voltage = 0.125 * Pressure + 0.5 [kgf/cm2]
Voltage = 0.00878835 * Pressure + 0.37081095 [PSIA]


3. If the measured voltage value is not specification, replace the A/C pressure transducer.