National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 1093-2013
Scope
This procedure is applicable to the initial calibration, subsequent calibration and in-use inspection of electrochemical carbon monoxide detection alarms (hereinafter referred to as detection alarms) used in underground mines.
JJG 1093-2013 history
2013JJG 1093-2013 Detectors of Mining Carbon Monoxide