High-Speed Laser Sensors Enable 2D Measurement


The new versatile KEYENCE high-speed LJ-G Series 2D laser sensors accurately measure the surface profile of targets in the X and Z directions. Considered the fastest in its class with a high-speed sampling of 3.8 ms and high-accuracy of ±0.1% F.S. in the Z-Axis, the LJ-G can perform 8-point measurements, making 100% inspections possible. Five sensor-head types ranging from 15 mm to 200 mm can handle tight specifications for many applications in a wide range of industries. The all-in-one controller allows easy setup on screen or using the LJ-G Navigator software (optional). Also available is the capability to connect two sensor heads to one controller. Designed for intuitive operation and user-friendly setup, programming and troubleshooting are simple. The LJ-G achieves a high-speed of 3.8 ms with the Quatro link system that enables accurate measurements on fast production lines or moving targets. Equipped with the E3-CMOS image sensor that provides stability, the LJ-G can measure virtually any targets ranging from black rubber (weak reflection) to metals (strong reflection). In addition, a 2D Ernostar lens is used to provide the optical system with optimal accuracy. Measurements of width, profile and distance can be accomplished using 28 modes at 8 different points simultaneously: peak height, bottom height, average height, gap, width/position, section area, angle/intersection, profile comparison. A wide area coverage enables fast measurement without moving the sensor or the target. IP67 rating ensures that the LJ-G will operate safely in a water spray environment. A multifunctional controller satisfies any need. It provides dual independent analog and discrete outputs, RS-232 port, Ethernet port, a 2-sensor head capability. A high-capacity internal memory can potentially store up to 160 programs, 1034 profiles or 65,000 data points. Simple setting, data storage and analysis can be performed with the optional LJ-Navigator software.


• The value obtained after 64 times Averaging at the reference distance. • The target is KEYENCE standard object. (White diffusing material). The value is the average of the widths in the Height mode. • The target is ø10 mm pin gauge. The value is the edge in the Position mode after 16 times of the Smoothing . • When the measuring range is the minimum in the initial setting. • The illumination on the receiver of the sensor head when targeting an illuminated white paper.
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