What do you think is the working principle of helium leak detector?

Helium leak detection in vacuum box, according to the basic principle of helium leak detection, using helium as tracer gas, filling helium into the vacuum box, and then quickly and accurately judging the leakage of the workpiece, with high accuracy.

The operator puts the workpiece into the vacuum box and connects the workpiece interface with the quick connector in the vacuum box. After the vacuum door is closed, the system can automatically complete the whole process of large-scale leak detection, workpiece strength detection, vacuum pumping, helium filling, leak detection and recovery, with fast production pace and high leak detection accuracy.

Process editing

A 1: installing the workpiece-closing the vacuum box door-vacuumizing the vacuum box, and filling the workpiece with high-pressure nitrogen at the same time-large leakage and strength detection;

B 1: If A 1 fails the test, the system will give an alarm and display the number of the large leaking workpiece-the test procedure will stop;

B2: if A 1 passes the test, releasing nitrogen-vacuumizing the workpiece-suppressing the helium background in the vacuum box-filling helium into the workpiece-vacuum mode, and performing micro-leak detection;

C 1: If B2 fails the test, the system will give an alarm-cycle check and display the serial number of the small leaking workpiece-the test procedure will be suspended;

C2: If B2 passes the test, the vacuum box will be filled with atmosphere, and helium in the workpiece will be recovered-the vacuum box will be opened and the test will be completed.

System functions and advantages editing

1, the intensity of high-pressure nitrogen in the vacuum box is detected to protect the safety of operators.

2. The helium background in the vacuum box is suppressed to zero, which ensures the accuracy and high precision of leak detection.

3. The automatic calibration function and automatic calibration program of the leak detector can calibrate the sensitivity and accuracy of the leak detector at any time.

4. The specially designed inspection program can determine the specific leaking workpiece and display it through lighting and LCD operation screen.

5. Patented technology seals the joint to reduce misjudgment.

6. The interlock protection and acousto-optic alarm function of the electronic control system ensure the safe and reliable operation of the system.

7. PLC control makes the system run clearly and realize real-time monitoring.