China 'GB/T 22137.1-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 22137.1-2008
Valve positiongers for use in industrial-process control system - Part 1: Methods of evaluating the performance of valve positiongers with pneumatic outputs 工业过程控制系统用阀门定位器 第1部分:气动输出阀门定位器性能评定方法
Issued Date:2008-06-30
Implemented Date:2009-01-01
Issued by:
The Standardization Administration of the People's Republic of China