Four-Wire Transmitters; 3-Wire With External Power; 4-Wire With Data Logger Power - Campbell CURS100 Product Manual

CURS100 100 Ohm Current Shunt Terminal Input Module
FIGURE 4-5. 3-wire with external power
4.3

Four-Wire Transmitters

A four-wire transmitter has separate wires for power input and ground and for
signal output and ground. The signal ground may or may not be internally tied
to the power ground. Some transmitters have completely isolated outputs.
FIGURE 4-6. 4-wire with data logger power
FIGURE 4-7. 4-wire with external power
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