The Keyence LK-G155 is a high-performance laser displacement sensor head in the LK-G5000 Series, engineered for applications requiring both ultra-high precision and flexible response times. With its combination of outstanding accuracy, dual reflection capability, wide measuring range, and selectable sampling frequencies, the LK-G155 is a versatile solution for advanced industrial inspection and measurement tasks.

The sensor is optimised for a reference distance of 150 mm in diffuse reflection mode and 147.5 mm in specular reflection mode, providing flexibility to adapt to different surface conditions. This dual capability allows it to measure a wide range of materials, from matte and rough surfaces to glossy or reflective ones, ensuring stability in applications where surface properties vary.

The measuring range extends to ±40 mm in diffuse mode and ±39 mm in specular mode, offering engineers the ability to handle larger displacements while maintaining high resolution. This broad range makes the sensor particularly useful for applications such as thickness inspection, warpage detection, and component profiling in industries where precision is essential.

A key advantage of the LK-G155 is its superior accuracy, featuring linearity of ±0.05% of full scale and repeatability of 0.5 µm. These specifications make it ideal for micrometer-level inspection tasks, ensuring consistency even in environments where high precision is critical. Whether used in electronics assembly, semiconductor manufacturing, or automotive part inspection, the LK-G155 provides the confidence needed for strict quality control.

What sets the LK-G155 apart is its selectable sampling frequency, which can be set to 20, 50, 100, 200, 500, or 1,000 µs. This flexibility allows engineers to choose between maximum speed for high-throughput environments or longer sampling intervals for enhanced stability in challenging measurement conditions. At its fastest setting of 20 µs, the LK-G155 enables real-time measurements suitable for high-speed production lines without compromising accuracy.

The sensor’s ultra-fast response time, combined with its precision, ensures that even rapid changes in target height or surface features are captured accurately. This makes the LK-G155 highly effective in dynamic applications such as in-line inspection, defect detection, and process feedback control.

Built with Keyence’s commitment to durability, the LK-G155 is compact, robust, and designed to withstand the demands of industrial environments. Its reliability under continuous operation ensures long service life and consistent performance, even in challenging conditions.

Applications for the LK-G155 include automotive, aerospace, semiconductor, electronics, packaging, and precision machining, where accurate profiling, surface analysis, or dimensional verification are critical to maintaining product quality.

In summary, the Keyence LK-G155 Laser Displacement Sensor Head combines dual reflection versatility, wide measurement range, ultra-high accuracy, and selectable sampling speeds to deliver a powerful, adaptable measurement solution. Compact, precise, and flexible, it is an indispensable tool for engineers seeking both speed and accuracy in advanced automation environments.