On site verification of multifunctional single-phase energy meterceremonyAlso known as a multifunctional electricity inspection device, it is currently used forDesigned for online detection of the accuracy of single-phase electricity meters. It is possible to verify the error of the electricity meter without cutting off the power or disconnecting the wires, and measure the electrical energy, power, current, voltage, frequency, power factor, phase, waveform, harmonics, and power consumption.On site verification of multifunctional single-phase energy meterceremonyIt is an ideal instrument for online detection of single-phase electricity meters due to its small and lightweight size, complete functions, convenient use, and beautiful appearance.

1、 Function Introduction

1. adopt3.4Inch colorLEDLCD screen displays the working status and testing parameters of the instrument in Chinese characters, making operation extremely convenient.

2. Direct function key operation, automatic range switching without shifting gears, measuring and displaying voltage, current, phase, real-time measurement of active power, reactive power, apparent power, frequency, and power factor.

3. Verify the errors of various mechanical turntable or electronic single-phase energy meters without power outage or changing the wiring conditions of the energy meter.

4. It has the function of accumulating electric energy and can be used for on-site reading test of electric energy meters. It can verify the reading of the meter and independently assess the electricity consumption of measuring electrical equipment.

5. matchHigh precision and wide limit clamp current transformer, can be in50mA-5Within 0A rangeaccuratemeasurementMeasurement error of electric energy meter.

6. testable2～32Sub harmonic data, real-time waveform display of current and voltage.

7. Equipped with standard pulse input and output terminals for easy self checking and inspection.

8. There are two pulse modes: photoelectric head and electronic watch pulse line, which are convenient for on-site verification.

9. Equipped with overvoltage protection function and buzzer alarm prompt.

10. Optional500AThe current clamp is used for measuring the ratio and angle difference of current transformers, and can also be used for comprehensive error testing of single-phase low-voltage measuring devices.

11. The instrument is equipped with a built-in clock chip that can accurately record the detection time for future reference.

12. Built in memory, capable of storing500Group measurement data can be accessed through the direct function keys on the panel to view saved data groups.

13. Instrument configurationUSB interface, directly export measurement data to the computer for management through a USB flash drive, and use electricity inspection data management software to browse, edit, and print measurement (harmonic) data(A4format)Standard format test report, backup and other functions.

14. OptionalThe on-site printing and testing data of VMP02 micro printer is used as the testing basis.

15. Handheld ultra small streamlined structure, anti drop wristband, small size, light weight.

16. Optional single-phase load box,Meter calibration can also be performed on site when there is no load or low load on the energy meter.

17. Scalable Bluetooth wireless+intelligenceAPPdedicatedsoftware，In the hands of AndroidImplement data collection, storageViewanalyzeAPPStorage data includes voltage, current, phase, power, power factor, vector diagramGeographic location, photoswaitA large number of on-site locationsTest data.

2、 Technical indicators

1. Reference working conditions

（a）RingEnvironmental temperature:（23±5）℃

（b) Environmental humidity: (45-75)% RH

（c) Tested signal waveform: sine wave β=0.02

（d) Tested signal frequency: (50 ± 0.2) Hz

（e) Position of the tested current carrying wire in the clamp: centered

（f) External reference frequency electromagnetic field interference: should be avoided

2. basic error

1)Voltage measurement:30V～500V (battery powered) accuracy±0.2%

2)Current measurement: terminals5A（0.05Ib～2.0Ib） accuracy±0.2%

Clamp table50A（0.02Ib～1.0Ib） accuracy±0.2%

3)Active electrical energy:220V 5Aterminal accuracy±0.2%

220V 50AClamp table accuracy±0.2%

4)Reactive energy:220V 5Aterminal accuracy±0.5%

220V 50AClamp table accuracy±0.5%

5)active power：220V 5Aterminal accuracy±0.2%

220V 50AClamp table accuracy±0.2%

6)Harmonic measurement range:2Next time~32time

7)Frequency measurement:45-65Hzresolution0.001Hzerror±0.02Hz

8)Phase measurement:0～360° Resolution0.1° error±1.0°

9)Pulse output（6KHz TTLlevel=5V）：

10)Pulse input:1～99999 imp/kwh

11)Working power supply: measuring terminal power supplyAC80V～450V 50Hz

Lithium battery power supply2200mAh/7.4V

Power adapter for power supply AC220V/DC12V

12)Working environment: Temperature -15℃～40℃

altitude <1500 meters