1. 0.05% accuracy 2. Ideal reference standard for the testing of meter installation 3. Intuitive user interface
DFM-2 Portable Three-phase Reference Meter
I. Introduction
DFM-2 is suitable for three phase electrical energy meter testing equipments and metrical instruments. It can measure all kinds of parameters, including RMS of current, RMS of voltage, DC component, power factor of all the phases, phase angle between voltage and current, phase angle between one voltage and another, active power, apparent power, frequency, harmonics and distortion.
II. Features
1. High accuracy and multiple function.
2. Convenient operating menu and interface.
3. Auto range for voltage and current.
4. Calibrating the meter testing equipments and measuring magnetic induction intensity.
5. Adopt large-scale programmable logic circuit, complete digital sampling DSP technique, and minimize affectability form environment.
III. Specifications
1. Voltage range:30V~750V, accuracy:0.02%
2. Current range:25mA~100A, accuracy:0.02%
3. Accuracy of active power: 0.02%
4. Accuracy of reactive power: 0.04%/0.1%
5. Accuracy of apparent power: 0.04%/0.1%
6. Accuracy of active electric energy: 0.02%
7. Phase range:0°~359.9°, accuracy: 0.02%
8. Frequency range:45Hz~65Hz, accuracy: 0.02%
9. Harmonic range:0~31, accuracy: ±0.5%
IV. Working Environment
1. Rated temperature: 23°C±2°C
2. Working temperature: 10°C~30°C
3. Max. working temperature: 0°C~40°C
4. Working humidity: 45~80%R.H
5. Power supply voltage: 220V±10% 50Hz±1%
6. Power consumption: ≤50VA
Portable Reference Standard Meter
