
Analog Signals For Process Control Systems - Part 1: Direct Current Signals
出版:Asociacion Espanola de Normalizacion

专家解读视频
1986 [15/12/1986]
Supersedes UNE 21331. (06/2003)
IEC 60381-1 Ed. 2.0 - Identical
HD 452.1:1984 - Similar
IEC 60381-1 : 2.0 - Identical
HD 452.1 : 200S1 - Similar to
IEC 60381-1 : 2.0 - Identical