This SMART transmitter power supply provides a 2-wire SMART transmitter with power in a hazardous area and transfers the analog signal from the hazardous area to the safe area.

Digital signals may be superimposed on the analog values in the hazardous or safe area, which are transferred bidirectionally. Handheld terminals can be connected as shown in the block diagram.

If the loop resistance is too low, internal resistors of z 274 7 between terminals 8 and 9 and between 11 and 12 are available, which may be used as the HART resistor. SMART transmitter power supplies are delivered standard with terminals KF-STP-BU and KF-STP-GN. Jacks are integrated in these terminals for the connection of the handheld units.