Subsea Valve Position Sensors

The Subsea Valve Position Sensor measures the direction of the magnetic field generated by external magnets. The system can be divided into two main mechanical components, the magnetic drivehead assembly and the sensor body assembly.

The magnetic drivehead assembly is attached to the output shaft of the valve actuator. When the valve moves, the magnetic drivehead assembly rotates around four magnetic sensors built inside the nose of the sensor body assembly. The angle of the magnetic field relative to the sensor body assembly is determined by measuring two components of the field at right angles to each other.

These magnetic resolutes are processed by the electronics inside the magnetic sensor assembly, resulting in a closed loop signal of between4mA and 20mA.

The RMSpumptools manufacture a range of 2 wire, 4-20mA current loop output, non-contacting magnetic Subsea Valve Position Sensors.