Commercial vehicle tire pressure detectors are generally installed on the tires. They measure the tire pressure and temperature through internal detection sensors and send them to the receiver wirelessly. This method has higher measurement accuracy and can provide the most timely information about tire pressure.Commercial vehicle tire pressure detectors can allow drivers to understand the operating conditions of tires in real time and avoid the occurrence of tire blowout accidents.For external tire pressure detectors, they need to be completely sealed and can reach IP67 waterproof level.If the external tire pressure detector is not waterproof, water entering the interior of the tire pressure detector will directly damage the sensor.In this way, once an abnormality occurs in the car tires, the driver has no way to know in time, which can easily cause a traffic accident.This time, Hairis Technology introduces commercial vehicle tire pressure detectors to everyone.Waterproof testing equipmentprinciples and practical methods.

Figure: Commercial vehicle tire pressure detector air tightness testing equipment

The seal detection principle of automobile tire pressure detectors is tested based on pressure attenuation.The pressure decay method means to pressurize a product and observe the pressure change of the gas.There are two situations here. One is that the product itself has an inflation hole. We will directly inflate and pressurize the product, then cut off the air source and observe the changes in gas pressure. If the pressure drops, it means that the product is leaking. If it does not drop, it is good.The second type is that the product does not have an inflatable hole. We need to make a sealed cavity that is the same size as the product shape and specifications, that is, an abrasive mold, and try to fit the product as much as possible, because the detection results will be more accurate. Then pressurize the gas, and the gas will fill the space between the product and the abrasive mold. Then we also cut off the air source and detect whether the gas pressure has dropped. If there is a leak, the gas has leaked into the product. If there is no drop, it is good.

Test product: Commercial vehicle tire pressure detector

The car tire pressure detector tested in this test is completely sealed without any inflation holes.You need to make a mold for the product, place the car tire pressure detector to be tested in the mold, inflate the inside of the mold, and observe the changes in the air pressure inside the mold on our instrument to determine whether the test product is qualified or unqualified.The testing accuracy of the Hairis air tightness detector can reach 1pa, and leaks that are invisible to the naked eye will be reflected on our instrument.

Air tightness testing details

The waterproof level required by the customer for testing is IP68, which is the highest waterproof level.It can easily deal with rain, water accumulation and other problems encountered during use of car tire pressure.According to the customer's testing requirements, the product test pressure is 200kpa, the leakage upper limit is 0.1kpa, the air intake time is: 5s, and the test time is 10s.According to the test requirements, for a qualified product, the test pressure can reach 200kpa, and the leakage value is not higher than 0.1kpa. If these two conditions are met at the same time, our air tightness detector will automatically determine that the product is qualified. Otherwise, it means that the product leaks, and is determined to be unqualified and the instrument will beep to remind the operator.The Hairis air tightness detector is simple to operate. You only need to set the program according to the customer's testing requirements. If the customer does not have test data, the test value that can detect the customer's product can be set for the customer based on the customer's product.

Hairis Technology has done many air tightness tests on auto parts, transmissions, cars, wheels and new energy batteries.In terms of waterproof testing of auto parts, there are abundant cases and mature technology. If you are interested in the sealing test of auto parts, please call Hairis Technology to provide you with a free air tightness testing solution.

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