DC 0-100V Voltage Current Meter Digital Voltmeter Ammeter Amp Volt Tester For Sale
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DC 0-100V Voltage Current Meter Digital Voltmeter Ammeter Amp Volt Tester:
DC 0-100V Voltage Current Meter Digital Voltmeter Ammeter Amp Volt Tester
External shunt specifications:75 milliohms
Current test range: 0-10A, 0-50A, 0-100A
Current resolution (A): 0.01A
Display color:Red + Red, Red + Blue
Voltage resolution (V): 0.1V
Voltage measurement range:0.0V-100V
Display method:Double three 0.28" LED digital tube
Refresh rate:About 300mS once
Working voltage of Meter itself:DC 4 - 30V(The maximum input voltage can not exceed 30V. Otherwise the meter will be burned)
Working current of Meter itself:20mA
3 Styles For Optional: 10A Voltmeter & Ammeter/ 50A Voltmeter & Ammeter with 50A Current Shunt/ 100A Voltmeter & Ammeter with 100A Current Shunt
Notice: Only 50A and 100A Voltmeter & Ammeter Set come with Current Shunt, the 10A set does not have!
Package Included: 1 x Voltmeter & Ammeter
Note: The meter with a range of 50A or 100A must be connected to the shunt to measure the current no matter whether the measured current is less than 10A! Otherwise it will burn the header.
Voltage display normal, current display 0.00 or 0.0
Make sure that the thick black wire is connected to the negative pole of the battery, and the thick red wire is connected to the negative pole of the load. (Note that the discharge is not the same as the charging connection, see the concept of load and power supply.) (The header uses the original imported chip, after the factory passed very strict testing and calibration, to ensure that no quality problems before leaving the factory. The current display shows 0 99.99% is the wiring is not right, please be patient and carefully check the wiring)
Current display is not accurate:
If it is a direct power supply or an independent power supply and device power supply are common ground, as long as the fine black line can be disconnected accurately.
Connecting to power does not appear:
All AC power rectified power must be filtered by an electrolytic capacitor above 1000uF to supply power to the meter.
Judging the quality of the header (the following are two cases of normal headers)
Without shunt, connect the thin red line and the thin black line to the power supply. The meter current of 50A shows 50.0~59.9, and the meter of 100A shows 100~109.
Connect the shunt, connect the thin red line and the fine black line to the power supply. The meter current with a range of 50A shows 0.00, and the meter with a range of 100A shows 0.0;
The current can only be measured on the negative side of the power supply and on the negative side of the load.
Voltage range: The power supply voltage range of the 5 line header is 4~28V, that is, the voltage of the thin red line cannot exceed 28V.
About the concept of load and power
During discharge: The battery, switching power supply, and transformer are power supplies, and the resistors, lamps, motors, and power devices are the loads.
When charging: The charger, generator, and solar energy are power supplies. The rechargeable battery and the battery are the loads.
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