>Product>Electrical Test Equipment>Power & Energy Reference Standard> High Precision Multifunction Ac Dc Digital Multimeter
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GF333 multifunction digital reference multimeter can be used as a calibration device standard meter, also as a testing calibrator in metrology test center of grid corporation, power company and measurement department in power plant, national levels of metrological service, quality inspection departments, research institutes, tertiary institutions, industrial and mining enterprises, electric energy meter and electrical instrument production enterprises etc. The model GF333 high precision reference multimeter can test three phase ac voltage, current, phase angle, power, reactive power, apparent power, energy, power factor, frequency, also test DC voltage, DC current and DC power and transducer. The reference multimeter fully meet ISO17025 standard in the electrical laboratory.
■ Power plant;
■ AMI design center;
■ Electrical laboratory;
■ Energy meter R & D;
■ Watt-hour meter factory;
■ Metrological service center;
■ Laboratories of power utilities;
■ Electricity meter manufacturers;
■ Meter test bench integrated factory;
■ National Metrology and testing department;
■ Electricity power bureau & power company;
■ Electrical Department of industrial and mining enterprises;
■ Transducer measurement;
■ Measure DC voltage and DC current;
■ Measure calibration device of the magnetic induction;
■ With RS232 interface, it can be controlled by PC operation;
■ Measure calibration device the standard deviation of estimate;
■ Measure calibration device of voltage, current, power stability;
■ Using 6.5 inch TFT color LCD screen, character display clear chart;
■ Measure the AC voltage, current 2-31 harmonic content and waveform distortion degree;
■ Measure the AC voltage, current, active power, reactive power, frequency, phase angle and power factor etc;
■ Measure active power energy error, reactive power energy error, the maximum output pulse frequency is to 2 MHz;
■ Measure the voltage of the calibration device three-phase symmetric degrees, the current of three three-phase symmetric degree;
■ Using the 32 bit DSP and 24 bit low power and high speed DAC consists of high accuracy AC collector;
■ Have the advantages of wide measuring range, high precision, stable and reliable operation, simple operation etc.
| Electrical parameters | |
|---|---|
| Accuracy class | 0.02%, 0.05% |
| Power supply | AC 220 V±10% or 110 V±10%, 50/60Hz |
| Power consumption | <30VA |
| Warming-up time | <30min |
| Voltage measurement | |
| U1, U2,U3 | 6.25V, 12.5V, 25V, 50V, 100V, 200V, 400V, 800V (switch automatically), max 1000V |
| Range | (0-120%)RG |
| Resolution | 0.01%RG |
| Accuracy | 0.02%RD or 0.05%RD |
| Current measurement | |
| I1, I2, I3 | 0.25, 0.5, 1, 2.5, 5, 10, 25, 50, 100A(switch automatically) |
| Range | (0-120%)RG |
| Resolution | 0.01%RG |
| Accuracy | 0.02%RD or 0.05%RD |
| Power measurement | |
| Active accuracy | 0.02%RD or 0.05%RD |
| Reactive accuracy | 0.05%RD or 0.1%RD |
| Apparent accuracy | 0.02%RD or 0.05%RD |
| Energy measurement | |
| Active accuracy | 0.02%RD or 0.05%RD |
| Reactive accuracy | 0.05%RD or 0.1%RD |
| Phase measurement | |
| Range | 0.00°-359.99° |
| Resolution | 0.001° |
| Accuracy | 0.02° (voltage ≥50V and current ≥250mA) |
| Frequency measurement | |
| Range | 45-65Hz |
| Resolution | 0.001Hz |
| Accuracy | 0.001Hz |
| Power Factor measurement | |
| Range | -1.00000 ~ 0 ~ +1.00000 |
| Resolution | 0.0001 |
| Accuracy | 0.0005 |
| Electric energy pulse output | |
| Pulse constant range | 1-2880000000 |
| Output frequency of max. pulse | 600 kHz |
| Load capacity | >2mA |
| Default pulse output frequency | 10kHz-600kHz |
| Energy pulse Input | |
| Input range of pulse constant | 600-700000 |
| Setting range of test pulse | 1-999999999 |
| Max. pulse receiving frequency | 2MHz |
| Pulse input level | 5V |
| Voltage/current harmonics measurement | |
| Times | 2-31 |
| Error | 0.05% |
| Distortion degree error | 0.05% |
| Transducer measurement | |
| DC voltage range | ±1, ±5, ±10, ±20 V |
| Accuracy | 0.01% |
| DC current range | ±1, ±2.5, ±5, ±10, ±20mA |
| Accuracy | 0.01% |
| Ripple error | 1% |
| DC measurements (option) | |
| DC voltage | 50V, 100V, 200V, 400V, 800V (switch automatically), max 1000V |
| Range | (0 -120%) RG |
| Resolution | 0.01% RG |
| Accuracy | 0.02% RD |
| DC current | 0.1A, 0.3A, 1A, 3A, 10A, 30 A(switch automatically) |
| Range | (0-120%) RG |
| Resolution | 0.01% RG |
| Accuracy | 0.02% RD |
| Function | |
| LCD Display | 6.5 inch color disply |
| Vector diagram | Yes |
| Waveform | Yes |
| Energy accumulation | Yes |
| Harmonics measurement | Yes |
| Distortion degree | Yes |
| Self-calibration | Yes |
| Data storage | Yes |
| PC software | Optional |
| Communication port | RS232 |
| Standard | |
| Standard | IEC 62053-21,22, 23; IEC 60736; ANSI C12.20-2002; JJG 597-2005; JJG596-2012; JJG 1085-2013; JJF 68-2019; DL/T 826-2002; DL/T 1478-2015; DL/T 448-2016 |
| Safety | |
| Isolation protection | IEC 61010-1:2001 |
| Measurement Category | 300 V CAT III, 600 V CAT II |
| Degree of protection | IP40 |
| Declaration of conformity | CE & CNAS certified |
| Mechanical parameters | |
| Dimensions (W×H×D) (mm) | 440×360×160 |
| Weight (kg) | 10 |
| Environmental conditions | |
| Operating temperature | 10°C to 30°C |
| Storage temperature | -20°C to 65°C |
| Relative humidity | ≤85% |
| Influence of external fields | ≤0.05 %/mT |
| Temperature coefficient | ≤0.0005% /℃ |
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