LEAKAGE TEST APPARATUS FOR A GAS VALVE

摘要

The apparatus is designed to test leakage of gas valve automatically using a programmable logic controller (PLC) and an airleak tester. The apparatus includes : a PLC for controlling the entire system; a voltage source power supply (20) for supplying constant voltage to the first and second solenoid valve; a current source power supply (30) for supplying constant current to a proportional valve; a switching mode power supply (40); a leak tester (50); a switch and sensor section (60); a lamp section (70); and an attachment (100) for mounting measurers.