Technical specification (Customized service is available)
| Testing object | Automotive air conditioning expansion valve (all the workpieces with their dimension smaller than 90*90*40mm) 4 sets of inspection fixtures for one workpiece |
| Tracer gas | 10% Helium +90% Nitrogen |
| Pressure for helium leak test | 2.0MPa |
| Leak rate | 2 g/year (R134a) |
| Leaking detection position quantity | Two (each could accommodate two workpieces) |
| Cycle time | 15s/pcs. (including handling time) |
Application:
The expansion valve helium leak detector is suitable for air tightness test for automotive air conditioning expansion valve. With the leak detector, air tightness of automotive components will be well guaranteed, and the leakage of horizontal substances (refrigerant) will be well avoided.
In accordance to the basic principle of helium leak detection, we adopt helium, rather than Freon, as the tracer gas. After charging helium into the testing object within vacuum pump, the helium leak detector will be adopted for leak testing. The testing method features high precision and fast detection.
The expansion valve helium leak detector is equipped with two sets of vacuum pumps. After placing testing objects within fixtures, and press the start button, the sealing function will be automatically activated. And then a comprehensive array of processes will be automatically delivered, including gross leak test, strength test, evacuating, helium charging, micro-leakage test, helium recovery and etc. The system features fast cycle and high testing precision.
