GF112B Single-phase kwh meter calibrator

kWh Meter Calibrator

GF112B Single-Phase kWh Meter Calibrator is suitable to test various types single phase meters on site and also can be used to test alternating current parameters.



  • It combine the current clamp and the meter together, displayed by colorful and touch-screen.
  • The AAA Li-battery can work 4 hours continuously.
  • With wide voltage measuring range 15-300V and current measuring range 0.005-120A.
  • 4It can display all the measuring parameters in one screen.
  • The current clamp has automatic compensation and calibration function with accuracy class 0.2%
  • The meter and clamp have Integration design.
  • 16 bit high accuracy AD switch 32 bit ARM processor core.
  • Automatically record and save 999 groups calibrate data.
  • Micro-multifunction optic sample.
  • Manually/automatically test inductive single phase meters.
  • Manually/automatically test electric single phase meters.
  • It can measure virtual value of alternating voltage.
  • It can measure virtual value of alternating current.
  • Testing parameters: active power, phase angle of voltage/current and frequency etc.
  • Automatically store testing data, it can save 999 group test results.


Electrical parameters 
Accuracy class  0.2%
Active power measurement accuracy 0.2%, 0.5%
Energy measurement accuracy 0.2%, 0.5%
Power supply AAA type, Li rechargeable battery, 750mAh, 3.6V
it can work 8 hours continuously
Warming-up time <5 min
Voltage measurement 
U Range 15-300V
Accuracy 0.2%
Current measurement 
I Range 5mA-120A
Accuracy 0.2%
Phase measurement 
Range 0.00°-359.99°
Resolution 0.01°
Accuracy 0.05° 
Frequency measurement 
Range 45-65Hz
Resolution 0. 001Hz
Accuracy 0.005Hz
Power Factor Measurement 
Range -1 ~ 0  ~ 1
Resolution 0.001
Accuracy 0.005
Energy pulse output  
Pulse constant 25000
Energy Pulse Input 
Input range of pulse constant 1-25000
Pulse input level 5V
Mechanical parameters 
Dimensions (W×D×H) (mm) 215×60×30
Aperture of current clamp: 20mm
Weight (kg) 0.25 (mains)
0.8 (accessory and box)
Environmental conditions 
Working temperature -10°C to 55°C
Working humidity 5%-85%RHD
Storage temperature -25°C to 70°C
Storage humidity 5%-95%RHD

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