Campbell CURS100 Manuel d'utilisateur télécharger pdf (Page 14)

CURS100 100 Ohm Current Shunt Terminal Input Module

4.2 Three-Wire Transducers

A three-wire current loop transducer has the power supply connected directly to

the transducer. The voltage of the power supply is the voltage applied to the

transducer. The current output returns to power ground. Datalogger ground is

connected to sensor ground and the current output by the sensor must pass through

the resistor before going to ground.

Figure 4-4. 3-wire with datalogger power

Figure 4-5. 3-wire with external power

4.3 Four-Wire Transducers

A four-wire transducer 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 transducers have completely isolated outputs.

Figure 4-6. 4-wire with datalogger power

1 2 ... 9 10 11 12 13 14 15 16 17 18

Pas de commentaire

Campbell CURS100 Manuel d'utilisateur Page 14