№ Instrument Parameter Title, Code of Calibration Method Range Uncertainty (k=2) Limitation Note (0.1~0.32999)A/(50~60)Hz Urel=0.08% (0.33~1.09999)A/(50~60)Hz Urel=0.10% (1.1~2.99999AC Current )A/(50~60)Hz Urel=0.09% (3~10.9999)A/(50~60)Hz Urel=0.17% (11~20)A/(50~60)Hz Urel=0.22% Voltage(1~300)V CurrentAC Power (0.1~0.32999)A/(50~60)Hz cosφ=1 Voltage(1~30JJG 780-1992 0)V CurrentV.R of AC digital (0.33~0.89AC Power power meter 99)A/verification regulation (50~60)Hz of cosφ=1 Urel=0.10% 35 AC Power meter Urel=0.15% № Instrument Parameter Title, Code of Calibration Method Range Uncertainty (k=2) Limitation Note Voltage(1~300) Current(0.9~2.9999)A/(50~60)Hz cosφ=1 Urel=0.13% 35 AC Power meter Voltage(1~30JJG 780-1992 V.R of AC digital 0)V Current(3~10.9999AC Power power meter verification regulation )A/(50~60)of Hz cosφ=1 Urel=0.15% Voltage(1~300)V Current(11~20)A/(50~60)Hz cosφ=1 Urel=0.20% 36 DC standard voltage source JJG 445-1986Verification (0.01~1000DC Voltage Regulation of DC )V Standard Voltage Source Urel=0.01% on side service (1~100)mV/(10Hz~20kHz) JJG 410-1994 (1~100) V.R of Precise AC mV/(20~50)AC Voltage Voltage Calibration kHz Source (0.1~1)V/(10Hz~20kHz) Urel=0.10% Urel=0.12% 37 AC standard voltage source Urel=0.20% on side service № Instrument Parameter Title, Code of Calibration Method Range (0.1~1)V/(20~50)kHz (1~10)V/(10Hz~20kHz) (1~10)V/(20~50)kHz (10~100)V/(10Hz~20kHz) (10~100)V/(20~50)Uncertainty (k=2) Limitation Note Urel=0.18% Urel=0.10% Urel=0.18% Urel=0.10% Urel=0.18% on side service 37 AC standard voltage source JJG 410-1994 kHz V.R of Precise AC AC Voltage Voltage Calibration (100~1000)Source V/(10Hz~20kHz) (100~1000)V/(20~50)kHz Urel=0.10% Urel=0.20% 10μA~100mA JJG (Aerospace)38-1987 (0.1~1)A DC Current V.R of Direct Current Standard Source Urel=0.10% 38 DC standard current source Urel=0.15% on side service (1~10)A Urel=0.25% JJG(Aerospace)51-19(0.1~1)mA/99 (10Hz~1kH39 AC current source AC Current V.R ofAC standard z) current source Urel=0.15% on side service № Instrument Parameter Title, Code of Calibration Method Range (1~10)mA/(10Hz~1kHz) (10~100)mA/(10Hz~1kHz) (100~400)mA/(10Hz~1kHz) (0.4~1)A/(10Hz~1kHz) (1~3)A/(10Hz~1kHz) (3~10)A/(10Hz~1kHz) Uncertainty (k=2) Limitation Note Urel=0.20% Urel=0.15% Urel=0.20% Urel=0.15% Urel=0.25% Urel=0.36% JJG 982-2003 DC V.R of D.C.Resistance (0.1~10)? 40 DC resistance box Resistance Box Urel=0.05% on side service (10~100)? Urel=0.02% (100~1000)? JJG 982-2003 DC V.R of D.C.Resistance (1~10)k? 40 DC resistance box Resistance Box (10~100)k? (0.1~10)M? Urel=0.01% Urel=0.01% on side service Urel=0.01% Urel=0.05% № Instrument Parameter Title, Code of Calibration Method Range (10~100)M? (0.1~1)G? Uncertainty (k=2) Urel=0.10% Limitation Note Urel=2.4% 41 Grounding resistance meter Resistance JJG 366-2004 V.R of Earth Resistance Meters (0.1~1)? Urel=0.50% on side service (1~1000)? Urel=0.30% 10m?~1? Urel=1.0% (1~10)? JJG 837-2003 ? V.R of D.C. low (10~100)Resistance Meters (100~1000)? Urel=0.5% 42 Low DC resistance tester DC Resistance Urel=0.1% on side service Urel=0.1% (1~10)k? Urel=0.1% 500kΩ~10MJJF(Electronics)31502-2010 Threshold C.S.for Electrostatic resistance bracelet, foot wheel tester (10 ~100 )MΩ Ω Urel=0.3% on side service 43 Anti-static wrist tester Urel=0.6% 1mV~300V/Voltage LF Eleceronic Volt Meter Voltage and frequency response (55Hz、400Hz、1000Hz) JJG 782-1992 V.R of LF Eleceronic Volt Meter 5Hz~20Hz/1V Urel=1.0% Urel=0.5% 44
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