1) Convert RTD signal to 4-20mA by RTD converter WSPF-RTS-F11A-DX.

2) Input 2ch, Display A channel & B channel value in 1 display.

3) WPMZ-1 can Calculate difference of 2ch input (A channel - B channel).

If calculation result is below or over setpoints (4 setpoints setting available) when one of RTD broken etc., then Relay signal will output to detect.