Note: Please contact the customer service for the color you want, we have 99.9V red + green; 99.9V red + blue; 99.9V red (monochrome); 33.00V red (monochrome); 33.00V red + blue; 33.00V red + green, totally 6 style, otherwise we will send at ramdom. Hope you can understand.
Description
Digital DC Dual Display High Voltage Ammeter High Precision 4 Digit Multimeter Dual LED Digital Volt Amp Meter
Product Description
Features
• The function is perfect. The voltage and current meter are integrated. When measuring current, the power supply is taken from the measurement line. It does not need isolated power supply for separate power supply, which is convenient to use. • Small size (48mm*29mm*22mm) is believed to be a small voltage and current meter on the market. • High-precision voltage measurement with measurement line voltage drop compensation, which can automatically compensate the line voltage drop according to the current level (for detailed operation, please refer to the instruction manual).
Product Paramenters
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Opening size: 45mm*26mm (the opening directly snaps the watch into the panel)
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Dimensions : 48mm * 29mm * 21mm
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Supply voltage: DC3.5-28V (fine red line positive thin black line negative)
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Weight: 22 g / only
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Display mode: double 4-digit 0.28 inch LED digital tube
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Display color: red + red / red + blue / red + green
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Refresh rate: about 200ms / time
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Measurement accuracy: ± (0.3% + 2 words)
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Internal resistance: 25 milliohms
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1. Voltmeter range: DC 0.00-33.00V (resolution 0.01V) power supply, DC3.5-28V do not overvoltage
2. Voltmeter range: DC 0.0-99.0V (resolution 0.1V) power supply, DC3.5-28V do not overvoltage
Ammeter range: DC 0-999.9mA-3.000A Automatic variable accuracy, minimum resolution of 0.1MA below 1A, minimum resolution 1MA of 1-3A. High precision and absolute price/performance ratio.
Display instructions: • The digital tube above the meter head shows the measured voltage, four fixed display accuracy, the measurement range is 0-33.00V, and the minimum resolution is 10mV. • The digital tube below the meter head shows the measured current, four-digit variable display accuracy, measuring range 0-3.000A, when the measuring current is greater than 1A, the display accuracy is 1mA; when the measuring current is less than 1A, the display accuracy is 0.1mA . Voltage compensation function description: (Note that this function is not available in 0-99.9V version) When the load on the system is large, there will be a certain voltage drop on the connection line. At this time, the voltage measured at the meter will not correctly characterize the output voltage of the system power supply. Using the voltage compensation function, the voltage loss on the connection line is performed. Moderate compensation can accurately measure the output voltage of the system power supply. • When using this voltage compensation function, you must prepare a four-and-a-half-digit multimeter, connect it to the output of the system power supply, power off our meter, press and hold the button on the back of the meter, and power on the meter. At this time, the digital tube below the head will display [**], the value inside indicates the voltage compensation level already stored (the default 00 level compensation when the meter is shipped from the factory, ie no voltage compensation), then release the button, it will display - -**. • At this time, when --** is displayed, enter the voltage compensation level setting, and connect the large load into the circuit (the recommended load current is above 2A, the compensation will be more accurate), and observe the display voltage value of the digital tube above the meter head. Short press the button, the compensation level is automatically increased by one, and the maximum compensation is 99 levels until the display voltage of the digital tube above the meter head is consistent with the measured voltage of the multimeter. • Press and hold the button for more than two seconds to store the compensation level. After that, the meter will display the measured voltage in voltage compensation mode. If you want to turn off the voltage compensation function, you only need to store the 00 level compensation. Onboard wire function description: Fine red line (VCC): power supply input positive (3.5-28V) Note: If the measurement signal is lower than 28V and the power supply is sufficient, it can be directly used as the power supply for the module (use the thin yellow line and the thin red line in parallel) Thin black line (GND): power supply input negative (3.5-28V) and measurement signal Fine yellow line (VIN): measuring voltage signal positive (0-33.00V) Thick red line (I+): measuring device negative (must be connected in series between the negative pole of the power supply and the negative pole of the load) Thick black line (I-): negative power supply (must be connected in series between the negative pole of the power supply and the negative pole of the load) Reminder: When measuring current needs to be connected in series, be sure to connect to the negative circuit current. Otherwise, it will be directly damaged. The meter can only measure the forward current. It can't measure two-way and divide the positive and negative current.
Details Images