Model: LK-80 length measurement sensor Structure, working principle and use: LK series length measurement sensors, by measuring a long drive wheel length measuring signal reception and signal input circuits, drive wheel with the measured object (such as textiles, plastic belt) of the reverse rolling friction, or with the production host EUT Spindle reverse scroll through the sensor inside the gear ratio and signal combining to reflect on the actual length of the unit of measurement signal output to the counter (total length instrument), from the counter (total length instrument) recorded a cumulative length.