a lot ofmaterial capitalyesIt has solid, liquid and gaseous states. The gaseous state is the most common among all states of matter.forA special state that itself has no definite shape,It also has no definite volume. Its shape and volume depend entirely on the container containing the gas.Any amount of gas can be expanded infinitelyFills any container of any shape or size.gasSeal detectorWorkThe main features are as follows:

（1）Tested articlearoundofEnvironmental pair detectionmeetingThere is a certain amountofInfluence.If the tested product and the standard product are tested under the same conditions, it can be eliminatedExcept for external influences. 

（2) Pressurization will cause deformation of the product under test and the detection pipeline. The differential pressure comparison method can offset the impact of volume changes on the detection results..Therefore, it is necessary to try to ensure the symmetry of the pipelines on both sides of the tested product and the standard product.

（3) to the measuredTasteDuring the adiabatic compression process of the inner gas, the measuredTasteInternal temperature occursDefinitelychange.in spite oftakewherea kind of additionPressure method, such temperature effects are unavoidable.If the tested product and the standard product are compared and tested under the same conditions, pressurizeThe effects of the adiabatic temperature rise caused can cancel each other out.