This digital panel voltmeter is applicable for electric power grid and automation control systems, mainly used to measure various electrical parameters in power grid. According to the additional functions, the meters can be divided into X, K, D and S four series.
X series digital display intelligent voltmeters adopt direct AC sampling, use algorithm of True RMS to measure the voltage, and employ direct display of LED tube.
K series digital display intelligent meters are designed on the basis of X series, have an increase of one channel of analog transmitting output (4-20mA, etc) and one channel of RS-485 communication interface output (Modbus-RTU protocol) that is convenient for network building.
D series digital display intelligent transmitting meters are designed on the basis of X series, have an increase of three channels of analog transmitting output (4-20mA, etc.) and one channel of RS-485 communication interface (Modbus-RTU protocol), with direct three-row nixie tube display or single-row nixie tube display.
S series digital alarm measurement and control meters are designed on the basis of X series, have an increase of one channel of RS-485 communication interface (Modbus-RTU protocol), four channels of digital input measuring function (realizing “remote signaling”) and 1~2 channels of relay alarm output function (realizing “remote control”).
The meters also can be divided into single-phase voltmeter and three-phase voltmeter according to the measured power network, display mode of single-phase voltmeter is single-row nixie tube display, display mode of three-phase voltmeter is three-row nixie tube display. detailed technical specifications refer to the technical indexes of digital display meter.