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. Verify that the voltage value is within specification.

Voltage = 0.025 * Pressure + 0.1 [kgf/cm2]
Voltage = 0.001758 * Pressure + 0.074162 [PSIA]


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