GF6018A Clamp Type Multimeter Calibrator

multimeter calibrator

This GF6018A high precision multimeter calibrator is compliance with national verification regulation: JJG124-2005 "Ammeter, voltmeter, power meter and resistance meter verification rules" and related national standards. 0.05% single-phase standard AC/DC voltage and current source, can verify level 0.2 and the following AC/DC voltmeter, ammeter, frequency meter, resistance meter & clamp meter. The power source signals by using DSP and 16-bit high-speed A/D converters of controllable sine wave, the distorted wave signal source. It can as standard AC voltage and current source, also as standard DC voltage and current source. Multifunction calibrator GF6018A is designed as universal calibration tool for electrical calibration laboratories.


The GF6018A clamp type multimeter calibrator with RS-232 port, it can be connected with PC to control, become automatic verification system. It has precise interface and multi-functions including verification, storage and query. The GF6018A multimeter calibrator adopts color LCD screen, chart character display is clear, with high precision, stable and reliable, convenient operation and flexible characteristics. It fully meets ISO17025 laboratory standards and is a good ideal test equipment for electrical engineers.


  • The instrument stability 0.005%/min;
  • With 200A, 600A, 1000A calibration coil;
  • Meeting ISO17025 electrical laboratory standard;
  • High precision 0.05% AC/DC voltage source & current source;
  • Voltage and current range 0-1050VAC/DC and 0-24A AC/0-22A DC;
  • Because of light weight, this device is more suitable for field use;
  • With RS-232 interface, this calibrator is controlled by PC software(optional;
  • Automatic or manual inspection, and the results are processing and management;
  • Has a non-volatile memory, Storage 500groups of the test data, for access and upload;
  • With 1kHz, 5kHz, 10kHz, 50kHz, 100kHz, 200kHz, 1000kHz dot frequency square wave output;
  • It can be semi-automatic or manual inspection of analog multimeter, clamp type current meter;
  • Calibration all kinds of electric meter (voltmeter, ammeter, frequency meters, resistance meter) basic error;
  • Power amplifier working frequency range is 40Hz-1KHZ, has a good linear. Current amplifier is constant current source; voltage amplifier is constant voltage source; 
  • The multi-product calibrator can be generated with 2-31 harmonic wave, harmonic number, order, amplitude and harmonic phase of fundamental wave can be programmed;


  • Power plant;
  • Universities;
  • Panel manufacturer;
  • Research institutes;
  • Multimeter manufacturers;
  • Clamp meter manufacturers;
  • Oscilloscope manufacturer;
  • Electrical testing center;
  • Digital meter manufacturers;
  • ISO17025 Electrical laboratory;
  • Power engineering commissioning company;
  • Electricity power bureau & power company;
  • Electrical Department of industrial and mining enterprises;


Electrical parameters  
Power supply Single phase AC 220V±10% or 110V±10%, 50/60HzAC
AC Voltage output  
range 200mV, 400mV, 2000mV, 4000mV,
20V, 100V, 200V, 500V, 1000V; max 1050V
Range 20V-1000V Accuracy ±(0.03%RD+0.02%FS)
Stability ≤0.01% FS /60s
Range 200mV-4000mV Accuracy ±(0.3%RD+0.2%FS)
Stability ≤0.04% FS /60s
Load capacity 20VA
Waveform distortion ≤0.3%
Adjustable Range 0-120% FS (1000V not included)
Fineness 5×10-5
AC Current Output  
Range 2mA, 4mA, 20mA, 40mA, 0.2A, 0.5A, 2A, 5A, 10A, 20A; max 24A
Range 0.2A-20A  Accuracy ±(0.03%RD+0.02%FS)
Stability ≤0.01% FS /60s
Range 2mA-40mA   Accuracy ±(0.3%RD+0.2%FS)
Stability ≤0.04% FS /60s
Load capacity 20VA
Waveform distortion ≤0.3%
Adjustable Range 0-120% FS
Fineness 5×10-5
Frequency Output  
Range 45-65Hz
Fineness 0.001Hz
Accuracy 0.002Hz
Harmonic Wave  
Times 2-31
Extent 0-20%
Each harmonic phase fineness  0.01·N (N is harmonic order)
DC voltage output  
Range 200mV, 400mV, 2000mV, 4000mV,
20V, 40V, 100V, 200V, 400V, 1000V; max 1050V
Load capacity 20W
Adjustable range 0-110% FS (1000V not included)
Adjustable fineness 5×10-5
Stability ≤0.01% FS /60s (peak-peak value)
Accuracy ±(0.03%RD+0.02%FS)
Ripple wave ≤1% FS
DC current output  
Range 20uA, 40uA, 200uA, 400uA, 2mA, 4mA,
20mA, 40mA, 0.2A, 1A, 2.5A, 5A, 10A, 20A; max 22A
Load capacity 20W
Adjustable Range 0-110% FS (1000V not included)
Adjustable Fineness 5×10-5
Stability ≤0.01% FS /60s (peak-peak value)
Accuracy ±(0.06%RD+0.04%FS)
Ripple wave ≤1% FS
Resistance box  
Range 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10 kΩ, 20kΩ, 50KΩ, 100kΩ, 200kΩ, 500kΩ, 1MΩ, 2MΩ, 5MΩ, 10MΩ, 20MΩ
Fineness 0.02%
Adjustable Range 0-100%FS
Accuracy ±(0.3%RD+0.2%FS)
Clamp meter range 
200A Accuracy ±0.2%
600A Accuracy ±0.5%
1000A Accuracy ±1%
Dot frequency square wave output 
Range 1kHz, 5kHz, 10kHz, 50kHz, 100kHz, 200kHz, 1000kHz
Square wave amplitude 4.5V
Setting accuracy 5×10-5
Communication Port  
Communication Port RS232, USB
PC control software Yes, Optional
Standard JJG124-2005; JJF1587-2016; JJF 1075-2015; IEC61010, IEC 61000, IEC 61326
Isolation protection IEC 61010-1:2001
Measurement Category 300 V CAT III, 600 V CAT II
Degree of protection IP20
Declaration of conformity CE, CNAS certified
Mechanical parameters  
Dimension (L×W×H) (mm) 440x360x160
Weight (kg) 12
Environmental conditions 
Operating temperature 20°C±10°C
Storage conditions -30°C to 60°C
Relative humidity ≤85%RH
(1) FS means range, the same as below;
(2) RD means the setted harmonic content, harmonic can be a single output, also multiple output.

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