WELMEC activities towards harmonized software requirements and software examination for measuring instruments under legal control

摘要

Software is an issue of rapidly growing importance, also in legal metrology. Legal metrologists should find an appropriate answer by defining adequate and clear software requirements and conducting competent software examination. WELMEC Guide 2.3 for weighing instruments was a first step to harmonizing software examination in Europe by fixing the levels for the strength of protection of software against corruption, the intensity of examination of software at type approval, and the degree of conformity between the software implemented in a verified instrument and the approved software. Based on the experiences with WELMEC 2.3, the general WELMEC Software Guide 7.1 has been completed by WELMEC WG7 in 1999. After approval by the WELMEC Committee it has recently been published. It is also available on the WELMEC web site www.welmec.org/publications.