This standard stipulates the basic parameters, quality indicators and evaluation methods of the DDZ-Ⅲ series electric unit combination instrument indicator. This standard applies to the single-needle indicator, double-needle indicator, color band indicator and indicator alarm in the DDZ-Ⅲ series electric unit combined instrument, hereinafter collectively referred to as the indicator.
GB/T 13637-1992 history
2008GB/T 2613-2008 Electronic instrument general technical specification for industrial-process measurement and control system
1992GB/T 13637-1992 DDZ-Ⅲ series process electronic control system--Ladicating instrument
GB/T 13637-1992 DDZ-Ⅲ series process electronic control system--Ladicating instrument was changed to GB/T 2613-2008 Electronic instrument general technical specification for industrial-process measurement and control system.