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portable reference meter
portable reference meter


GF312V2S portable three phase reference meter on-site is the newest product produced by our company by widely visiting users and referring to the advantages of the same kind of products home and abroad. The measured part of the product adopts high speed 24bit A/D transmission to send DSP to conduct digital processing, unique power compensation algorithm with patented technology, which largely improves measured degree of accuracy and stability. Central processing part adopts 32-bit ARM embedded technology to make instrument interface novel, function abundant, operation distinct and easy, and performance steady. Class of accuracy: Class 0.02 or 0.05, range from 3×12A/3×600V or 3×120A/3×600V, with comfort portable design and light weight. The model GF312V2S portable reference meter is suit for electricity power utilities metrogical departments, Industrial and mining enterprises departments and electric lab to field use.


■ CT PT burden testing;

■ Screen capture function;

■ Measurement U & I wave;

■ With smart optical sampler;

■ Self adjusted clamp-on CTs;

■ 7 inch color TFT touch LCD;

■ BT port and android APP optional;

■ RS232 port for PC software control;

■ Accuracy class: 0.02%, 0.05%, 0.1%;

■ USB and RS232 communication ports;

■ Measurement for energy register error;

■ Measurement of clock error of energy meter;

■ Measurement of turn ratio & phase error for CT;

■ Large capacity storage device for mass memory;

■ Measurement of all kinds of energy meter errors;

■ Power supply (lithium battery)/ 85-265V AC /U1Un (40-450V);

■ Check wiring failures and calculation of electricity compensation;

■ Display of vector diagram, phase sequence, waveform oscilloscoper;

■ Measurement of U, I, P, Q, S, phase angle, power factor, frequency etc;

■ Input two pulse signal for master and slave meter synchronously calibration;

■ 5A, 20A, 100A, 200A, 500A, 1000A, 2000A, 3000A, 6000A current clamp optional;

■ Measurement U & I of harmonics of 2nd to 63rd, harmonics spectrum bar and trend charts;


■ Power plant;

■ Electrical laboratory;

■ Energy meter factory;

■ Electricity power utilities;

■ Metrological service center;

■ Power engineering company;

■ Distribution power corporation;

■ Electrical engineering service company;

■ National Metrology and testing department;

■ Electricity power bureau & power company;

■ Electrical Department of industrial and mining enterprises;


Electrical parameters
Accuracy class 0.02%, 0.05%, 0.1%
Power Supply External power, 85-265V, 45-65Hz
Phase voltage supply 40-450V, 45-65Hz
Li-Battery supply optional
Voltage measurement
Range 0-600V
Error ±0.05%; ±0.02%
Harmonic 2nd - 63rd
Input impedance range 245kΩ@ 250V; 10MΩ @5V
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Current measurement
Range (direct connection) 1mA-12A or 1mA-120A
Range (clamp on CTs) 1mA-120A
Clamp on CTs Optional 5A, 20A, 100A, 200A, 500A, 1000A, 2000A, 3000A
Error (direct connection) ±0.05% or ±0.02%
Error (clamp on CTs) ±0.1% (1mA-120A )
±0.2% (other)
Harmonic 2nd - 63rd
Clamp diameter 18mm or others
Input impedance range 0.04Ω@ 0.05A-12A
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Power measure error
Active power (direct connection) ±0.05% or ±0.02%
Active power (clamp on CTs) ±0.1% (1mA-120A)
Reactive power (direct connection) ±0.1% or ±0.05%
Reactive power (clamp on CTs) ±0.2% (1mA-120A)
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Energy measure error
Active energy (direct connection) ±0.05% or ±0.02%
Active energy (clamp on CTs) ±0.1% (1mA-120A)
Reactive energy (direct connection) ±0.1% or ±0.05%
Reactive energy (clamp on CTs) ±0.2% (5mA-120A)
Stability 0.01%/minute
Long term stability <100× 10E -6 /Year
Phase angle
Range 0°-360°
Resolution 0.001°
Error ±0.015°
Range 15Hz-70Hz
Resolution 0.0005Hz
Error 0.001Hz
Reference Meter
Measuring modes 2WA / 2WR / 2WAP
4WA /4WAb / 4WR /4WRb /4WAP /4WAPb /4WRC
Brandwidth 3000Hz
Sampling 16 bit 504 samplers/ period
Pulse output
Energy constant 250000
Pulse ratio 1:1
Output level 5V
Pulse output constant programmable 1-250000 when f=60KHz
Pulse input
Input channel 3
Input level 3-12V
Input frequency Max. 2MHz
Resolution 800×480
LCD 7" TFT color touch
Vector diagram Yes
Waveform Yes
Energy accumulation Yes
CT ratio test Yes
CT PT programmable Yes
Local parameter input Yes
Wiring emulation Yes
Self-calibration Yes
Recorder check Yes
Data storage Yes
GPS Yes, Optional
Data storage qty 10000
External extend memory Yes
Screen printing Yes
Communication port USB/RS232/BT
Communication with PC Yes
Upload data Yes
External mini printer Yes, Optional
External keyboard Yes, 26pcs keys
IP class according to DIN EN 60529 IP65
Declaration of conformity CE & CNAS conform
Protection class according to DIN EN 61140 II
Overvoltage category voltage measurement CAT III 600V
Overvoltage category current CAT III 600V
Mechanical parameters
Dimensions (W×H×D) (mm) 365×269×151
Weight (kg) 4.5
Environmental conditions
Ambient temperature -25°C to +50°C
Storage temperature -30°C to +65°C
Relative humidity 30%-95%
Power Consumstion ≤13VA