How LVDT position transmitter works on DC supply(24vdc) from DCS, whereas transformer operates on AC supply? pls help..



How LVDT position transmitter works on DC supply(24vdc) from DCS, whereas transformer operates on AC..

Answer / bongani

the linear variable differential transmitter or transformer has a potentiometer(varrying resistance) when it stretched the resistance changes. With the 24vdc supply, the ohms law is completed to give a linear 4-20mA output to your controller or indicator. same storry applies on the RVDT

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