How to detect the air tightness of mobile phone antenna? The waterproof and air tightness test method of mobile phone antenna is demonstrated. Today, Shenzhen Harris Automation Technology Co., Ltd. will tell you how to test the waterproof and air tightness of mobile phone shell antenna, and what is the principle of waterproof and air tightness test of mobile phone shell antenna?
Now the mobile phone has been equivalent to our "apple of the eye", always hold it in the palm of the hand, for fear that it will fall down. If you really accidentally fall to the ground, you will immediately pick it up to see if it is broken. I tell you, it's good to fall on the ground. If you fall into the water, have a look? How can a mobile phone without waterproof function be semi disabled? And for each part of the mobile phone waterproof test, air tightness test is to do enough in place. In order to avoid the mobile phone water can still ensure that the mobile phone is safe. Today, we focus on the air tightness test of mobile phone case antenna, the IP67 waterproof test of Harris mobile phone case, and the air tightness test method.
First of all, we need to choose a high-precision air tightness tester, also known as waterproof tester, and then customize a fixture to connect with the mobile phone shell antenna of the product to be tested. As shown in the case of mobile phone case in the figure below, it is connected in this way to detect the air tightness of mobile phone case antenna.
The parameters are as follows:
Air supply pressure: 0.4 ~ 1.2MPa
Power supply voltage: 220 V / 50 Hz or 110 V / 60 Hz
Pressure regulation range: - 40 ~ - 0.5kpa, 5 ~ 150kPa
Pressure regulation accuracy: 0.1kpa
Pressure test range: - 60 ~ 150kPa
The minimum resolution of pressure attenuation test is 1pA
Minimum resolution of leakage flow test: 0.01ml/min
Air tightness test principle of mobile phone case antenna
The compressed air with a certain pressure and a certain volume is used to inflate the product. If the product has air filling holes, the air is directly supplied to the air filling holes. After a certain period of time, the air supply source is cut off, and the pressure sensor inside the instrument is used to monitor the pressure change of the product after inflation; If there is no air hole in the product, the mold is designed to package the product, and then the product surface is inflated quantitatively through the mold, the air source is cut off, and the pressure sensor of the internal instrument department is used to monitor the pressure change of the product after inflation