The tightness of the fatigue test stand for pressure gauges refers to the allowable limit of the leakage of the medium in the case of adding a certain pressure medium to the sealed part to be measured.
Air tightness test according to different testing methods are divided into two categories: one is judged by the amount of air bubbles in the visual, gas to the workpiece cavity pressure, be immersed in water or lather, to judge whether the workpiece leakage and leakage according to visual bubbles and water bubbles in Chengdu.
At present, this method is still widely used in refrigerators, air conditioning sealing pipes and box leak detection. But this method has low test efficiency and is affected by subjective factors. At the same time, the drying and antirust treatment of the workpiece must be done by this method.
The other is through the sensor signal output judgment, that is to the work cavity filled with a certain pressure of gas, through the pressure sensor signal output to determine whether the leakage of the workpiece, and calculate its leakage rate, that is, the unit pressure sensor output changes in the unit time.
If you are interested in our products or have any questions, you can either leave us a message or contact us directly. We will contact you in the first time after receiving your information.