Three-purpose meter calibrator|DO30 Huaguang Hi-Tech launched a new product, HG30-IIB upgrade product HG30-IIB digital three-purpose meter calibrator, digital multi-function calibrator, meter calibration device, multi-purpose meter calibrator HG30-IIB type digital multi-function calibrator\\ Multifunctional three-meter calibrator is suitable for testing and testing various AC currents and voltmeters below 0.2 level, among which, DC The voltage is 0 ~ 1000 V; the AC and DC current is 0 ~ 20A; and it is equipped with an eleven gear × 2 median resistor. The instrument adopts digital oscillation technology, the output current and voltage are more stable and reliable; the overload protection safety measures are adopted, and the output protection equipment can be automatically stopped when the worker makes a mistake in operation; the output is adjusted by panel and numeric keypad, and the output can be fixed step output, and the staff is more convenient to operate. Therefore, in addition to high accuracy, stability and reliability, easy to use, etc., the operation is safer and more convenient. It is mainly used to test various meters, ammeter heads, and voltage meter heads with corresponding accuracy. It is suitable for metering and testing, instrument production and maintenance, and quality inspection departments. The AC and DC clamp meter can be verified by purchasing the standard coil of the clamp meter; online operation with the computer can be realized by purchasing computer software. Main technical performance parameters: This instrument is suitable for ambient temperature 0℃~40℃; relative humidity below 80%, use AC 220V± 10% power supply, power frequency 50Hz±5Hz, large power consumption is not greater than 150W. Output range and accuracy as shown in the table waveform distortion is not greater than 0.5% Ripple coefficient is not more than 0.1% Working time: Continuous stability: