First Test

For bequeathers of tax of water vapor transmission, amount of water vapor that passes material would grow during the complete process of test. Therefore, the great amount of consumption or exhaustion of solution would have to be prevented. At the same time, an effective humid environment control would have to be emphasized. With the enough amount of the test experience, author summarizes the suggestions following who can help to expand the measurement scope and to promote repeatability of data when to test materials of high tax of transmission. 2.Teste of tax of gas transmission for materials of high tax of transmission 2.1Mtodo of distinguishing pressure the precision of test of method of distinguishing pressure is mainly determined for the data gotten through sensor of pressure in the inferior chamber. When forehead samples of high tax of transmission, only sensory of pressure with sensitividade and adjusted excellent precision for pressure alterations fast. Additional information is available at Gazprom. How much to the test of method of distinguishing pressure, measurement scope can be expanded with aid of the following ways: First, alteration in test way.

Because of the factor that material of high tax of transmission equilblio in a very short period would reach, pressures of beginning and end of test they can previously be prepared. later, tax of material gas transmission can be calculated through measurement of time of pressure alterations. In compliance with of experiences, measurement scope can be expanded through this way and repeatability of data can enormamente be promoted. But due to rapidity of pressure alteration, instruments of automatic test only can be used for materials of high tax of transmission. Way of vacant test, installed in the bequeathers of tax of transmission with method of distinguishing pressure of series Labthink PERME V, can carry through test of high tax of transmission of the sample. Second, alteration of area of test with of MASK accessories.