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AC and DC Voltmeter/Ammeter with Digital Display
Digital display meters include voltmeters, ammeters, frequency meters, 4~20mA passive meters, temperature controllers, and teaching instruments for measuring the electrical signals.
Program overview
This product series is designed for digital display header. The IC integrated T-RMS calculator, display driver and DSP unit and it is a solution in the application of AC and DC meter. It can realize high precision measurement of industrial electrical signals such as AC and DC voltage, AC and DC current, frequency, and expansion of the alarm output function. The internal integration of advanced calibration algorithms can save the calibration time when the measurement accuracy is met. The calibration coefficients can be stored for saving external memory.
Program advantages

  • High measurement accuracy. Integrated 24-bit ADC up to 0.1 leve

  • Integrated TRMS does not require an external rectifier device for AC measurement

  • The IC is highly integrated resulting in a single chip solution

  • Internal integrated DSP unit supports digital calibration

High measurement accuracy. Integrated 24-bit ADC up to 0.1 leve

Integrated TRMS does not require an external rectifier device for AC measurement

The IC is highly integrated resulting in a single chip solution

Internal integrated DSP unit supports digital calibration

Features

  • Measurement accuracy: up to 0.1 level

  • Display range: 3.5, 4, 4.5 digit

  • Conversion rate: 3-4 times per second

  • Display mode: LCD/LED driver

  • AC bandwidth: Maximum support is 400Hz

  • Alarm output supports 2 independent alarm output and flexible configuration

  • Operating voltage range: 2.4~3.6V

  • Calibration method: Digital calibration. Internal memory can be used

Application diagram
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