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          7. Sensor Head, Small Spot, Laser Class 2

          CCD Laser Displacement SensorLK series

          Sensor Head, Small Spot, Laser Class 2


          [Discontinued model]

          This model has been discontinued.

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          Sensor head Long-distance *1 Sensor head

          Measurement mode

          High-precision mode,Long-range mode

          Reference distance

          350 mm 13.78" (High-precision mode), 500 mm 19.69" (Long-range mode)

          Measuring range

          ±100 mm ±3.94" (High-precision mode), ±250 mm ±9.84" (Long-range mode)

          Light source


          Red semiconductor laser


          690 nm (visible light), Class 2


          0.95 mW maximum

          Spot diameter (at standard distance)

          Approx. 0.7 mm (high-precision mode), approx. 0.3 mm (long mode)


          ±0.1% of F.S.


          10 µm (high-precision mode), 50 µm (long mode)

          Analog output

          Voltage output

          ±10 V (10 µm 0.000394"/mV) *2 (High-precision mode),
          ±5 V (50 µm 0.001969"/mV) *2 (Long-range mode)


          100 Ω

          Current output

          4 to 20 mA (350 Ω maximum)*3

          Alarm output

          NPN: 100 mA max. (40 V max.) (N.C.), Residual voltage: 1 V max.

          Sampling cycle

          1,024 µs

          Other functions

          Auto-zero, analog output holding when an alarm occurs, gain switching, response switching, span and shift adjustment

          Temperature characteristics

          0.02% of F.S./°C


          Power voltage

          24 VDC ±10 %, Ripple (P-P) 10 % or less

          Maximum current consumption

          400 mA max.

          Environmental resistance

          Enclosure rating


          Ambient light

          Incandescent or fl uorescent lamp: 10,000 lux max.

          Ambient temperature

          0 to +50 °C 32 to 122 °F (No condensation)

          Relative humidity

          35 to 85 % RH (No condensation)

          Vibration resistance

          10 to 55 Hz, Double amplitude 1.5 mm 0.06", 2 hours in each of the X, Y, and Z directions


          Aluminum die-cast


          Approx. 700 g (including cable)

          *1 The LK-503 can both be used in High-precision mode or Long-range mode.
          *2 When measurement is impossible, 12 V (31.2 mA) is output.
          *3 The ±5 V analog voltage output range (the ±10 V range on the LK-010) becomes the 4 to 20 mA analog current output.

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          Measurement Sensors