Helium Leak Test System for Automotive Air-conditioning Expansion Valve
This automatic helium leak detection system is suitable for air-tightness detection of automotive air-conditioning expansion valves. It ensures the airtightness of the product and avoid the leakage of harmful substances (refrigerant).
According to the basic principle of helium leak detection, with helium as the tracer gas (instead of Freon), helium is filled into the workpiece in the vacuum chamber, and then the helium leak detector can accurately and quickly judge the leakage of the workpiece.
Technical parameters:
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Workpiece
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Automotive air-conditioning expansion valve, ( workpieces lower than 90x90x40mm),
Provide 4 set of detection fixture for one workpiece.
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Tracer gas
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10% Helium + 90%Nitrogen
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Helium Pressure for Indicating Leakage
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2.0Mpa
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Reject point
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1g/Year（R134a）
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Cycle time
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15s/pc(load and unload time of the workpiece included)
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Leak testing station
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Two Stations, each installs 2 workpieces
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