Laser gaugeLG series


Main Unit

[Discontinued model]

This model has been discontinued.

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LG-81 - Main Unit


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Reference distance

80 mm

Measurement range

±20 mm

Light source


Red semiconductor laser


670 nm (visible light), Class 2

Control output

1.4 mW maximum (0.24 mW average)

Spot diameter

1 × 2 mm*1

Indication system

±0.1 mm or less (with white mat paper)

Display resolution

0.1 mm*2

Display range

-99.9 to +99.9

Display speed

40 times/ms, 80 times/ms, 160 times/ms, 640 times/ms*3

Display power

2-Colour, 7-segment LED (character height: 10 mm)

Control input

Timing input

NPN open-collector or non-voltage contact signal

Auto-zero input

Tolerance selector input

Control output


100 mA max. (40 V max.) Residual voltage: 1 V max.

Alarm output

Maximum NPN open-collector output: 100 mA (40 V or less), residual voltage: 1 V or less (N.C.)

Response time

10 ms minimum (switchable between 4 levels)

Temperature characteristics

0.03% of F.S./°C

Main functions

Auto zero, scaling, tolerance memory


Power voltage

12 VDC ± 10%, ripple (P-P): 10% or less

Current consumption

200 mA or less

Environmental resistance

Operating ambientluminance

Incandescent lamp or fluorescent lamp: 2,500 lux or less

Operating ambient temperature

0 to 40°C (32 to 104°F)

Operating ambient humidity

35 to 85%RH (no condensation)


10 to 55 Hz, 1.5 mm double amplitude for 2 hours in each of the X, Y, and Z directions

Case material

Glass reinforced plastic


Approx 300 g (including 2-m 6.6' cable)

*1 At the reference distance
*2 With white mat paper at the reference distance
*3 This varies according to the set number of averaging measurements.


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