What Are Current Transducers?
In general terms, transducers convert electrical energy into other forms of energy, as in the case of audio loudspeakers, or from other forms of energy into electrical signals, such as with pressure transducers. The term current transducers, however, is usually used to describe devices that convert alternating current (AC) or direct current (DC) electrical current signals into analog instrumentation signals used in industrial control systems. Here they would convert the measured AC or DC current value, perhaps the power supply to a motor or pump, into either a 4-20 milliamp (mA) DC analog process value, or a 3-15 psi pneumatic signal for pneumatic control systems.
