Multifunctional Single-Phase Electricity Meter Field Calibrator

Product Introduction

The handheld single-phase electricity meter field calibrator, also known as a multifunctional electricity inspection instrument, is designed for on-site online accuracy testing of single-phase electricity meters. It calibrates meter errors without power interruption or disconnection, measuring energy, power, current, voltage, frequency, power factor, phase, waveform, harmonics, and cumulative energy. This instrument features a compact and lightweight design, comprehensive functionality, user-friendly operation, and an aesthetically pleasing appearance, making it the ideal tool for online testing of single-phase electricity meters.

Product Parameter (specification)

Reference working conditions

(a) Ambient temperature: (23±5)℃

(b) Ambient humidity: (45–75)% RH

(d) Frequency of the signal being measured: (50±0.2) Hz

(e) Position of the current-carrying conductor under test in the clamp: centered

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

Basic error

Voltage measurement: 30V ~ 500V ( battery powered) Accuracy ± 0.2%
Current measurement: Terminal 5A ( 0.05 Ib ~ 2.0 Ib ) Accuracy ± 0.2%
Clamp meter 50A ( 0.02Ib ~ 1.0Ib ) Accuracy ± 0.2 %
Active electrical energy: 220V 5A terminal Accuracy ± 0.2%
220V 50A clamp meter Accuracy ± 0.2%
Reactive power: 220V 5A terminal Accuracy ± 0.5%
220V 50A clamp meter Accuracy ± 0.5%
Active power : 220V 5A terminal Accuracy ± 0.2%
220V 50A clamp meter Accuracy ± 0.2%
Harmonic measurement range: 2nd to 32nd order
Frequency measurement: 45-65 Hz, resolution 0.001 Hz , error ± 0.02 Hz
Phase measurement: 0–360 ° , resolution 0.1 ° Error ± 1.0 °

Pulse output ( 6kHz TTL level = 5V):

Voltage (V)	Current (A)	constant imp/kwh
2 2 0V	5A	21600000
2 2 0V	20A	10800000
2 2 0V	50A	4320000
2 2 0V	100A	2160000
2 2 0V	500A	432000

Pulse input: 1～99999 imp/kwh

Operating power supply: AC 80V ~ 450V 50Hz, powered by the measuring terminals.

Power adapter supplied AC220V/DC12V

Operating environment: Temperature -15 ℃～40℃

Humidity <85% RH

Altitude <1500 meters

External dimensions

Main unit dimensions: 200 × 126 × 45mm Weight 560g

50A clamp meter dimensions: 142 × 42 × 21mm Weight 210g/piece

Overall dimensions: 280 × 235 × 130 mm Weight 2500g/set

Product feature and application

1. Features a 3.4-inch color LED LCD display with English characters indicating instrument status and test parameters for highly convenient operation.

2. Direct function key operation with automatic range switching-no manual shifting required. Measures and displays voltage, current, and phase, while simultaneously monitoring active power, reactive power, apparent power, frequency, and power factor in real time.

3. Calibrates errors in various mechanical rotary or electronic single-phase electricity meters without power interruption or altering meter wiring.

4. Features cumulative energy measurement, enabling on-site meter reading tests and verifying counter readings. Can independently assess electricity consumption of metered equipment.

5. Equipped with a high-precision, wide-range clamp-on current transformer for accurate measurement of meter metering errors within the 50mA-50A range.

6. Tests 2nd to 32nd harmonic data with real-time waveform display of current and voltage.

7. Features standard pulse input/output terminals for convenient self-testing and calibration submission.

8. Offers two pulse transmission methods-optical sensor and electronic meter pulse line-for field calibration flexibility.

9. Features overvoltage protection with audible buzzer alarm.

10. Optional 500A current clamp enables measurement of current transformer ratio error and phase angle error, as well as comprehensive error testing for single-phase low-voltage metering devices.

11. Built-in perpetual clock chip accurately records test times for future reference.

12. Built-in memory stores up to 500 measurement sets, accessible via dedicated function keys on the front panel.

13. Equipped with a USB port for direct export of measurement data to a computer via flash drive. Utilizing power inspection data management software enables browsing, editing, printing (A4 format) of standard test reports, and backup functions for measurement (harmonic) data.

14. Optional VMP02 micro printer for on-site printing of test data as verification documentation.

15. Ultra-compact, streamlined handheld design with anti-drop wrist strap, featuring small size and lightweight construction.

16. Optional single-phase load box enables meter calibration even when the field electricity meter has no load or low load.

17. Supports Bluetooth wireless expansion + dedicated smart app software for data collection, storage, viewing, and analysis on Android handheld terminals. The app stores extensive field test data including voltage, current, phase, power, power factor, vector diagrams, geographic location, photos, and more.

Prodection details

Suitable for power operation and maintenance, as well as electricity meter verification scenarios, this device enables error calibration of single-phase mechanical/electronic energy meters without power interruption or disconnection. It measures electrical parameters including voltage, current, power, and 2nd to 32nd harmonics, while supporting data storage, export, and on-site printing.

Company Qualifications

FAQ

1)What pulse sampling methods does the MEDX-W1K multifunctional single-phase electricity meter field calibrator support, and what scenarios are they respectively applicable to?

Answer:
Three pulse sampling methods are available, each suited for distinct scenarios:
1. Photoelectric Sampling: Applicable to both mechanical rotary-disc meters and electronic meters. A photoelectric sampler attached to the meter captures the disc rotation or electronic pulse signals. A lit red light indicates mechanical meter mode, while an unlit red light indicates electronic meter mode.
2. Pulse Signal Line: Exclusive to electronic meters. Connect the pulse input line's pulse input and GND terminals to the high and low ends of the electronic meter's pulse output, respectively. Plug the other end into the instrument's six-pin socket to initiate sampling.
3. Manual Control: Used when no photoelectric sampler is available. Press the M manual control key on the calibration interface. When the meter's rotor completes the preset number of revolutions, press the M key again. The instrument will manually calculate one error measurement.

2) What types of operating power sources does the MEDX-W1K Multifunction Single-Phase Electricity Meter Field Calibrator support, and what are their respective features?

Answer:
The instrument supports three operating power types with the following characteristics:
1. Measurement Terminal Power Supply: Connecting an AC 80V–450V voltage signal directly powers on the instrument and enters operational mode without additional steps. Suitable for field scenarios with stable voltage signals.
2. Lithium Battery Power: Equipped with a built-in 2200mAh/7.4V lithium battery, it can operate continuously for 8 hours without an external power source. When the battery is low, the battery capacity indicator in the upper right corner will alert the user. Recharging requires the dedicated AC220V/DC12V power adapter.
3. Power Adapter Supply: Connect the adapter to AC220V mains power to output DC12V voltage. This can directly power the instrument or charge the built-in lithium battery. When fully charged, the battery capacity indicator displays "IIIII" without flashing.

3)What precautions should be taken when using the MEDX-W1K Multifunction Single-Phase Energy Meter Field Calibrator with a clamp-on current transformer?

Answer:
Five key points for using the clamp-on current transformer:
1. Wipe any contaminants from the core end face of the jaw before use to prevent measurement inaccuracies.
2. Position the current-carrying conductor at the geometric center of the jaws to minimize measurement errors in current amplitude.
3. During field measurements (especially with low currents), maintain distance from power transformers, other current-carrying conductors, and magnetic interference sources.
4. Ensure correct current direction: current flows into the colored side of the clamp and out through the gray side.
5. Before measurement, connect the clamp-on current transformer to the meter port first, then turn on the meter's power switch. Finally, clamp the jaws onto the current-carrying conductor. Avoid clamping the meter first and then connecting the instrument port, as this may cause a secondary open circuit in the transformer.

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