{"id":7466,"date":"2017-05-03T10:10:11","date_gmt":"2017-05-03T08:10:11","guid":{"rendered":"https:\/\/blog.wika.com\/en\/?p=7466"},"modified":"2024-09-19T13:59:46","modified_gmt":"2024-09-19T11:59:46","slug":"traceability","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/en\/knowhow\/traceability\/","title":{"rendered":"Traceability"},"content":{"rendered":"

Measuring instruments for pressure and temperature are used in almost all areas of industrial manufacturing. As a result of continuous mechanical, chemical and thermal loading, these instruments age and can therefore not guarantee the correctness of the measured values over the course of time. Through timely calibration, however, the alteration of the measured value can be determined.<\/strong><\/p>\n

In the process of calibration, the displayed value of the measuring instrument is compared with the measuring result of a different measuring device which is known to function correctly and accurately and which itself has been made to coincide directly or indirectly with a national (or international) reference instrument. In short, to be able to compare measuring results, they must be \u201ctraceable\u201d to a national or international standard via a chain of comparative measurements. The calibration hierarchy shown in the picture (using the example of Germany) depicts the traceability of an inspection equipment in a company up to a national standard at the PTB (German national metrology institute).<\/p>\n

In order to ensure traceability in practice, the following points must be observed, among others:<\/p>\n