The THC Sensor card is installed adjacent to the plasma unit and provides the interface for the Torch Switch, scaling, and filtering of the Tip Voltage. Also included (not shown) is the Current Sense Transformer designed for plasma machines that do not have an Arc Good (XFR) active signal. Circuitry is provided to adjust the sensitivity of the Arc Sensing and a front panel lamp indicates the Arc Good condition. Interface connection to the controller is with a standard DB9 shielded cable. And can be up to 25 ft in length.
Rev 15 is for older systems. If you are unsure about which revision you need, please call us.