KEYENCE LK-G502 Sensor Head: Ultra Long Distance, Small spot

Reference distance

Diffused reflection: 500 mm, Specular reflection: 497.5 mm

Measuring range

Diffused reflection: -250 to +500 mm, Specular reflection: -249 to +498 mm^*1*2

Light source

Type

Red semiconductor laser

Wavelength

655 nm (visible light)

Laser Class

Class II (FDA CDRH 21CFR Part 1040.10), Class 2 (IEC60825-1)

Output

0.95 mW

Spot diameter (at reference distance)

Approx. ø300 µm

Linearity

±0.05 % of F.S. (±250 µm)^*3 -250 to +250 mm
high-accuracy range: ±0.02 % of F.S. (±100 µm) -250 to -50 mm
long range: ±0.1 % of F.S. (±500 µm) -250 to +500 mm (F.S. = ±250 mm)^*4

Repeatability

2 µm^*5

Sampling frequency

20 / 50 / 100 / 200 / 500 / 1000 µs (Selectable from 6 levels)

LED display

Near the centre of the measurement: Green lights
Within the measurement area: Orange lights
Outside the measurement area: Orange flashing

Temperature characteristics

0.01 % of F.S./°C (F.S.= ±250 mm)

Environmental resistance

Enclosure rating

IP67 (IEC60529)

Ambient light

Incandescent lamp or Fluorescent lamp: 5,000 lux max.

Ambient temperature

0 to +50 °C

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

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

Material

Aluminium die-cast

Weight

Approx. 380 g (including the cable)

^*1 The range is obtained by measuring KEYENCE's standard target (ceramic).
^*2 When the sampling rate is 20 µs, the range becomes -230 (NEAR side) to -250 mm (NEAR side) for diffuse reflection.
When the sampling rate is 20 µs, the range becomes -230 (NEAR side) to -249 mm (NEAR side) for specular reflection.
When the sampling rate is 50 µs, the range becomes -125 (NEAR side) to -250 mm (NEAR side) for diffuse reflection.
When the sampling rate is 50 µs, the range becomes -125 (NEAR side) to -249 mm (NEAR side) for specular reflection.
^*3 All are calculated at F.S. = ±250 mm.
"High accuracy range" and "long range" refer to the linearity when those ranges are used.
^*4 The range is obtained by measuring KEYENCE's standard target (ceramic) with the Standard mode.
^*5 The range is obtained by measuring KEYENCE's standard (SUS) with 4,096 times of averaging at the reference distance.