I.S. EN 60051-4:1990现行
Direct Acting Indicating Analogue Electrical Measuring Instruments And Their Accessories Part 4: Special Requirements For Frequency Meters
出版：National Standards Authority of Ireland
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基本信息
标准编号： I.S. EN 60051-4:1990
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：26
标准简介
Applies to direct acting indicating analogue frequency meters, and to associated non-interchangeable accessories.
等同采用的国际标准
IEC 60051-4 Ed. 4.0 - Identical
