T7-LVDT Valves position transducer 

Transducer T7-LVDT is used for measuring, through the position transducer system with linear variable differential transformer (LVDT), the OPENING POSITION of steam VALVES in a turbine; the measurement is performed by keying the transducer shaft integrally with the valve opening control device in order to measure the rotation of such device. The signal picked up should be sent to a measuring channel CEMB /T7 units for processing.

PRINCIPLE OF OPERATION:

T7-LVDT allows transforming the rotational movement of the valve control device into a linear movement measured by a magnetic core which is displaced within a fixed coil in the transducer body. The coil has one primary winding and two secondary windings connected in opposing phase; the output signal (secondary winding) is proportional to the mechanical displacement of the core and, therefore, to the angle of rotation performed by the valve control device.