随着检测精度的不同，检测成本逐步升高，其中包括设备以及正常用的耗材等。根据不同的试验检测场合以及检测精度选择不同的气压检测方法。
With the different detection accuracy, detection costs gradually increased, including equipment and normal use of consumables. Different air pressure detection methods are selected according to different test occasions and detection accuracy.
1、水压试验主要是指用于被测件的整体强度性实验，一般为正常工作压力的2倍到1.5倍工作压力.测试被测件产品的整体耐受压力的情况。比如气瓶的水压压力试验水压试验为被测件的1.5倍工作压力，当正常工作压力为20MPa试验压力的时候，水压强度试验为30MPa，缠绕气瓶的试验压力略有区别。

1, hydrostatic test mainly refers to the overall strength test for the measured parts, generally 2 times to 1.5 times work pressure of normal working pressure. Testing the overall tolerance pressure of the measured product. For example, the cylinder pressure test, hydraulic pressure test is 1.5 times the work pressure of the measured piece, when the normal working pressure is 20MPa test pressure, the water pressure strength test is 30MPa, the test pressure of the winding cylinder is slightly different.
2、气压试验主要用于检测件的微小孔泄漏情况，试验的压力为正常工作压力的1.25-1.15倍压力。常用的方法包括冒泡法、差压法、直压法、流量检测方法、氦气检漏等方法。
2. The air pressure test is mainly used to detect the micro hole leakage of the test piece. The test pressure is 1.25-1.15 times pressure of the normal working pressure. Commonly used methods include bubble method, differential pressure method, direct pressure method, flow detection method, helium leak detection and other methods.
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