Product Introduction
The Double Clamps Digital Phase Meter is a portable, high-precision instrument for on-site voltage, current, and phase measurements. It enables safe, non-intrusive testing (no need to disconnect lines) and can measure phase differences (U-U, I-I, U-I), phase sequence, transformer wiring groups, differential protection systems, and meter connections. With fully insulated dual-channel inputs, it prevents short circuits and equipment damage. The high-contrast LCD (up to 25mm characters) features a 70° adjustable viewing angle for optimal readability. Ideal for field diagnostics with reliability and ease of use.
Product Features
1、Compact & Handheld Design – Portable and user-friendly.
2、Wide Measurement Range – Measures current (10mA–10A) and voltage (3V–500V) without breaking the circuit.
3、High-Contrast LCD – 25mm-tall characters with 70° adjustable tilt for optimal visibility.
4、Intuitive Function Switch – Quickly toggle between voltage, current, and phase measurements.
5、High-Precision Clamp Sensors – 0.1mA current & 0.1V resolution (patented technology).
6、Low Power Consumption – Energy-efficient design with battery voltage monitoring.
Product Parameters
Reference to working conditions
| Environment temperature | (23±5)℃ |
| Environmental humidity | (45～75)% RH |
| Measured signal waveform | Sine wave、β=0.02 |
| Measured signal frequency | (50±0.2)Hz |
| The position of the measured current- carrying conductor at the clamp mouth | any |
| The amplitude of The measured signal when measuring The phase | 100～220V、0.5～1.5A |
| External reference frequency electromagnetic field interference | Should be avoided |
Measurement error of AC voltage
| Limit of quantity | Resolution | Basic error limit |
| 20V | 0.01V | ±（0.3% reading +0.2% range) |
| 200V | 0.1V | |
| 500V | 1V |
Measurement error of ac current
| Limit of quantity | Resolution | Basic error limit |
| 200mA | 0.1mA | ±（0.3% reading +0.2% range) |
| 2A | 1mA | |
| 10A | 10mA |
Voltage input circuit impedance when u1-u2 phase is measured：40KΩ
| Range | Resolution | Basic error limit |
| 0～360° | 1° | ±2° |
Rated working condition
| Environment temperature | (0～40)℃ | |
| Environmental humidity | (20～80)% RH | |
| Measured signal waveform | Sine wave、β=0.05 | |
| Measured signal frequency | (50±0.5)Hz | |
| The position of the measured current- carrying conductor at the clamp mouth | any | |
| The amplitude of The measured signal when measuring The phase | U1-U2 phase: 30V ~ 500V | |
| I1-I2 phase: 10mA ~ 10.00A | ||
| U1-I2 phase or I1-U2 phase: 10V ~ 500V, 10mA ~ 10.00A | ||
| External reference frequency electromagnetic field interference | Should be avoided | |
| Limit of rated operating error | Under the above rated working conditions, the rated working error limit of each measured shall not exceed twice the corresponding basic error limit | |
Other technical features
| Display digit | Three and a half | |
| Sampling rate | 3 times per second | |
| The power supply | Single 9V laminated battery, The power supply current is less than 5mA | |
| Overall dimensions | Case size | 192×95×55mm3 |
| Clamp shell size | 140×42×20mm3 | |
| Jaw size | Φ7mm×9mm | |
| Weight | Body | 280g |
| Test forceps | 2×200g | |
| Storage conditions | The temperature | －10℃～50℃ |
