Sensor device, measuring arrangement, and method for assembling a sensor device

A measuring arrangement for a control valve of a process plant, the measuring arrangement comprising:

• a linearly movable control rod adapted to transmit a stroke movement from a control actuator of the control valve to an actuator of the control valve, wherein a reference point is defined on the control rod, the reference point being displaceable with the control rod by a stroke amplitude between a first reversal point, which corresponds to a closed position of the actuator, and a second reversal point, which corresponds to a maximum open position of the actuator,
• a support structure adapted to fasten the control actuator to a valve housing of the control valve which receives the actuator,
• a sensor device arranged in a stationary manner on the support structure and including a position sensor and a lever arm rotatable about a fixed pivot point of the sensor device and adapted to convert the linear stroke movement into a corresponding transmission movement mapped on the position sensor, wherein the pivot point is arranged offset in relation to a center point of a stroke amplitude in a direction of the first reversal point.