METHOD FOR IDENTIFYING LEAKS IN ARTICLES OPERATING AT LIQUID NITROGEN TEMPERATURE

摘要

The invention relates to methods for testing for leaks and allows to increase accuracy of determining the place of a leak in articles operating at liquid nitrogen temperature. The product is placed in a sealed chamber, product chamber together obezgazhivayuti filled into the product liquid nitrogen, which is then displaced by controlling gas leakage which a camera recorded the gas analyzer, on the occurrence of which signal fixes the position of the boundary of liquid nitrogen and it is determined by location of leakage, In use a mixture of two gases, one of which nekondensiruyuschiys at liquid nitrogen temperature gas as test gas, such as nitrogen and the other is - carbon monoxide, which is recorded and leakage.