BS-89-4 › Historical Revision Information
Direct acting indicating analogue electrical measuring instruments and their accessories - Part 4: Specification for special requirements for frequency meters
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Direct acting indicating analogue electrical measuring instruments and their accessories
Keywords
Working range;Overvoltage tests;Marking;Meters;Grades (quality);Electrical tolerances;Electrical testing;Analogue signals;Electrical measuring instruments;Electric terminals;Accessories;Errors;Signal devices;Electrical wave measurement;Frequency measurement
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Document Number
BS 89-4:1990
Revision Level
1990 EDITION
Status
Superseded
Publication Date
Aug. 31, 1990
Replaces
BS 89:1977
Replaced By
BS EN IEC 60051-4:2021
Page Count
14
ISBN
0580184447
International Equivalent
IEC 60051-4:1984;EN 60051-4:1989
Committee Number
PEL/85