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NHJ-800 helium mass spectrometer leak detector/Vacuum helium leak detection analyzer/Helium leak detection test machine

NhJ-800 series leak detector is a quiet mobile environmental protection helium mass spectrometry leak detector, air compression discharge, no oil mist pollution. Helium mass spectrometry and reverse diffusion principle are used, 180° non-uniform magnetic field and automatic control technology are adopted. It has the characteristics of short startup time, fast operation speed, high sensitivity, reliable performance and no oil mist pollutant discharge.

NHJ-800 helium mass spectrometer leak detector/Vacuum helium leak detection analyzer/Helium leak detection test machine

With big leak detection function: through the preset pressure, when evacuated, can not reach the preset value, leak detector automatic alarm prompt.

A variety of measurement unit selection, real-time update of detection data, direct output to generate Excel table.

Rotary, 7 inch color touch screen, the operator can adjust the direction according to comfort.

Large leakage protection mode, fully protect ion source from oxidation and atmospheric leakage molecular pump from impact.NHJ400 Series Helium Hydrogen Mass Spectrometer Leak Detector

Leak Detection

Negative pressure method

*Vacuum the sealed chamber inside the inspected product
*Apply helium gas on the outer surface of the product under inspection
*Leak detector detects changes in helium content inside the workpiece
*The precise location of the leak can be realized

Positive pressure method

*The sealed chamber is filled with helium under certain pressure
*When a leak occurs,helium leaks through the leak through the surrounding atmosphere
*Detection of helium concentration increments in surrounding atmosphere by suctionmethod The precise location of the leak can be realized

Back pressure method

Place the inspected product in a pressurized helium chamber for a certain period of time
Remove the residual helium from the surface
Put the inspected product into the leak detector connected with the leak detector;
Take the maximum leakage rate for a certain time