Series CD19 digital display measurement meters can bematched with transformer,bleeder,current shunt divider,electricalparameters transmitter to measure electric parameters such asvoltage,current,power,power factor,phase angle,frequency,anddisplay in form of numeral Or LED bar.Some of products contain 4-20mA or 0-5V analog output.This series products has advantagesof high accuracy,better isolation,stable performance,anti-vibration,so it can directly replace previous pointer instruments.It meeets the requirements of National standard GB/T13978-1992。