Method and arrangement for comparative testing

摘要

It is the object of the invention to propose a testing method and associated arrangement which enables high testing accuracy with a high testing speed during the testing of a large number of specimens of one type. Two specimens of one type are tested at the same time and the difference between the test results is formed. The difference is compared with a predetermined positive or negative limiting value or limiting value variation. Exceeding this limiting value or limiting value variation means that the associated specimen is "poor". The invention is particularly suitable for solving the contradiction of high testing accuracy - long settling time for the production of equivalent output conditions during comparative testing methods, that is to say long testing duration. It was specifically provided for tightness tests of a great number of specimens of one type.