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CCD Laser Displacement SensorLK series

Sensor Head, Small Spot

LK-031

[Discontinued model]

This model has been discontinued.

Compliance with the certification standard is ensured as of the time of shipment from our company.

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SPECIFICATIONS

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Model

LK-031

Type

Sensor head High-precision Sensor head

Reference distance

30 mm 1.18"

Measuring range

±5 mm ±0.20"

Light source

Type

Visible red semiconductor laser

Wavelength

670 nm

Output

0.95 mW

Laser
Class

FDA (CDRH) 21CFR Part 1040.10

Class 2 Laser Product

IEC 60825-1

Spot diameter (at standard distance)

Approx. 30 µm
0.001181"

Linearity

±0.1% of F.S. *1

Repeatability

1 µm *2 0.000040"

Analog output

Voltage output

±5 V
(1 µm 0.000040"/mV) *3

Impedance

100 Ω

Current output

4 to 20 mA (Applicable load: 350 Ωmax.)

Alarm output

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

Sampling cycle

512 µs

Other functions

Auto-zero, analog output holding when an alarm occurs, gain switching, response switching, span and shift adjustment of mirror surface measurement mode, changing the sampling cycle

Temperature characteristics

0.01% of F.S./°C

Rating

Power voltage

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

Maximum current consumption

400 mA max.

Environmental resistance

Enclosure rating

IP67

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

Material

Aluminum die-cast

Weight

Approx. 260 g (including cable)

*1 Linearity was obtained using KEYENCE's standard target (Zirconia block gauge: LK-031/036, LK-081/086, LK-011, White ceramic block gauge: LK-503).
*2 Repeatability was obtained using KEYENCE's analog sensor controller (RD-50) with the number of averaging measurements set to 64.
Note: The ripple of the analog output may be 1 mV or more due to common mode noise when observed with an oscilloscope or a high-speed A/D conversion board.
*3 When measurement is impossible, 12 V (31.2 mA) is output.

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Measurement Sensors