National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 344-2005
Scope
This procedure is applicable to the initial calibration, subsequent calibration and in-use inspection of standard and working nickel-chromium-gold-iron thermocouples (hereinafter referred to as thermocouples) with a measurement range of 4.2K to 273.15K.
JJG 344-2005 history
2005JJG 344-2005 Ni-Cr/Au+0.07at.% Fe Thermocouple
1984JJG 344-1984 Verification Regulation of Ni-Cr/Au+0.07at% Fe Thermocouple