DC 300V ± 0-500A Hall Voltmeter ammeter Digital LED Voltage AMP Meter Charge Discharge Current 10A 20A 50A 100A 200A 12V 24V

DC 10A 20A 50A 100A

Threading hole ------ aperture 8.5mm

Transformer L 23.3*W23*T93MM

DC 200A 300A 500A

Threading hole ------ aperture 20mm

Transformer L 68*W57*T20MM

Measure Voltage range: 0-100V 0-300V 0-600V

Measure Current Range: ±10A ±20A ±50A ±100A ±200A ±500A

Power supply voltage: DC 4~30V(Note: the max voltage input should not be larger than 30V, or it will burn out)

Working current: <30mA

Display color: RED+BLUE/ RED+RED

Testing rate: ≥500mS/per time

Measuring accuracy: 1%(+/-2 words)

Extreme working conditions:

Lowest power supply voltage: +4.0V

Max power supply voltage: +30V

Working temperature: -10 to 65 Celsius

Operating humidity: 10 to 80%(No condensation)

Working pressure: 80 to 106kPa

Direct sunshine: NO(please prevent direct sunshine)

Wring connection:

Red wire: connect to positive pole of power supply(Note: voltage between red and black wire should

not be larger than 30V)

Yellow wire: connect to the positive pole of measured voltage

Black wire: connect to the negative pole of power supply, negative pole of measured voltage(common ground terminal )

Product Features:

The wide power supply range, with reverse polarity protection.

Display voltage and current on the screen at the same time.

Use the SMT technology, so consistency is very good.

With a voltage calibration potentiometer, current calibration potentiometer, you can calibrate by yourself. The tolerance is absolutely exit.

CT adopts the design of perforation type wire through the hole, without having to cut wires, without damage, without changing the original electric current wire can be achieved current measurements.

Since CT and measured wire is isolated completely, this meter can be measured the current of the power positive, negative and any devices, dont need to worry about the ammeter "common ground".

The positive and backward current can be measured, and the "positive" current is shown in the positive direction (the decimal point is always bright or not bright), and the "negative" current is shown in the reverse direction (the decimal point flashes slowly.

It can be tested two "completely isolated" devices. The voltage of A device, and the current of the B device. Or the voltage of device B, the current of A device.

The withstand voltage value up to 2KV between the tested conductor.

High reliability, high resistance to current shock, no current impact damage ammeter.

With three wires, connection is convenient, easy connect to solar system/car/electric vehicle/motorcycle interior wires. It is used to monitor the battery voltage and can be also used for other products.

Calibration Method:

The relative error between the instrument and the instrument, or after long-term use, due to component aging or environmental temperature changes caused by the error can be calibrated by the following methods, in order to get more accurate measurements, it is recommended to energize and then preheat more than 5 minutes before recalibration.

Current calibration

In the condition of the half of actual measured current value, adjust the "amplitude modulation (or A)" potentiometer by the side of the transformer until it is consistent with the standard meter.

In the condition of without current, use a screwdriver to adjust the "zero(or 0)" potentiometer that behind the transformer until the decimal point of the ammeter flashes fast to the best; always bright or no light shows positive current, slow flashing shows negative current

If the test accuracy is very high, you can repeat the above two steps to get higher accuracy

Voltage calibration:

In the condition of the half of actual measured voltage value, adjust the voltage calibration potentiometer of the meter with the screwdriver until it is consistent with the standard meter.