Figure 19. Functional Potentiometer Sensor.
Multi-turn potentiometer.
Convention al potentiometric sensors have a limited range of operation.
Its value is set by the geometric dimensions of the frame and the number of
turns of the winding. They cannot be increased indefinitely. Therefore, multi-
turn potentiometric sensors have found application, in which the resistive
element is twisted along a helix with several turns, their axis must be rotated
several times so that the motor moves from one end of the winding to the other,
i.e. the electrical range of such sensors is a multiple of 3600.
The main advantage of multi-turn potentiometers is high resolution and
accuracy, which is achieved due to the large length of the resistive element with
small overall dimensions.
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