BS 90:1975 Specification for direct-acting electrical recording instruments and their accessories
Publication Year
1975
Document Status
Current
Abstract
Defines and classifies accuracy classes, methods of determining intrinsic error and variations for measured quantity and time-keeping, lists influence quantities, electrical and mechanical requirements, marking requirements and symbols. Concept used and effect of friction between marking device and chart, explained in appendices.
Document History
Confirmed June 2016.
ISBN
0580082792
Publisher Information
British Standards Institution
With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.
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