How to use HarrisAir tightness testing equipmentCheck the tightness of the relay? What is the principle of air tightness testing equipment? What's the difference between waterproof and sealing of relay?
How to detect the air tightness of relay?
Due to the small size, the internal space of the relays used on PCB board is crowded, and most of them are connected with PCB board by welding process. If traditional immersion is used,
It is difficult to detect with naked eye. This is where we need to use HarrisAir tightness testing equipment！
First of all, the airtight detector of Harris is connected with the corresponding mold. Set the parameters of instrument pressure value and leakage value, and put the relay into the mold.
Finally, the test results of the instrument may be as follows:
1.The pressure value is low and the leakage value is up to the standard& amp; mdash;& amp; mdash;& amp; mdash;& amp; mdash; There is a big leak in the relay, which belongs to the bad product with big leak
twoThe pressure value is up to the standard and the leakage value is on the high side& amp; mdash;& amp; mdash;& amp; mdash;& amp; mdash; The leakage of relay is very small, which belongs to microleakage
threeThe pressure value and leakage value are both up to standard& amp; mdash;& amp; mdash;& amp; mdash;& amp; mdash; The relay has no leakage and reaches ipx7 waterproof grade standard, which is a good product
What is the principle of hermetic test relay of hermetic test equipment?
The principle of relay seal detection is to simulate the underwater environment of relay with gas. The relay is sealed with a mold and then filled with a certain amount of gas. If so
If there is leakage, the air pressure will change, and then the leakage value can be obtained through a series of complex calculations of Harris air tightness detector. According to the leakage value, the relay can be determined
Sealing performance and IP waterproof grade can also know the sealing of the relay.
The test precision of hermetic tester is up to 0.1pA, and the test pressure range is - 80 to 1000kPa. It is very suitable for waterproof sealing test of breaker.