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JW-0302E Field Calibrator of Multi-function Electric Energy Meter: without disconnection of current circuit. Display of the instrument is large screen color LED. Prompt message in English is provided for English operation interface. The LCD interface can display ...

JW-0301B AC Sampler & Transmitter Calibration Device: With frequency range of 40Hz～1kHz, the power amplifier has fine linearity; The current amplifier is a constant-current source and the voltage amplifier is also a constant-voltage source. Because of ...

JW-0301A Comprehensive Calibration Unit for Transmitter: of the current range, so the measurement of electrical energy accuracy can also guarantee for grade 0.05. So,the device, with high precision and stability, combines the testing functions ...

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JW-0302E Field Calibrator of Multi-function Electric Energy Meter