The Keyence LK-G502 is a long-range laser displacement sensor head from the LK-G Series, developed to provide high-precision measurement across large targets and extended ranges. Combining an expansive measuring window, excellent repeatability, and fast sampling capabilities, the LK-G502 is a robust solution for industries that require accuracy and stability in demanding production environments.

The sensor is optimised for a reference distance of 500 mm in diffuse reflection mode and 497.5 mm in specular reflection mode, ensuring flexibility when working with both matte and reflective surfaces. This adaptability allows the LK-G502 to maintain stable performance across a wide variety of materials, including metals, plastics, composites, and coated products.

One of its standout features is the wide measuring range, covering -250 to +500 mm in diffuse mode and -249 to +498 mm in specular mode. This extended span makes the LK-G502 especially valuable for applications that involve large parts, sheet materials, or significant displacement monitoring. Its ability to handle both negative and positive displacements ensures versatility in measuring complex surfaces or varying component dimensions.

Despite this large measurement capability, the LK-G502 maintains excellent accuracy with a repeatability of 2 µm. This precision allows the sensor to detect small variations and defects even when measuring across long distances. Combined with its fine spot diameter of approximately 300 µm, it delivers detailed profiling and stable detection of critical features.

The sensor also incorporates six selectable sampling frequencies, ranging from 20 µs to 1,000 µs. At the fastest rate of 20 µs, it can capture rapid changes in target profiles, making it suitable for real-time monitoring on high-speed production lines. Alternatively, longer sampling intervals enhance stability and reliability in applications where absolute precision over slower cycles is required. This flexibility ensures that the LK-G502 can adapt to both high-speed and high-accuracy environments.

Engineered for industrial robustness, the LK-G502 is built to withstand continuous use in challenging environments. Its compact and durable design allows seamless integration into automated systems, minimising installation complexity while ensuring long-term performance.

The LK-G502 is widely applicable in industries such as automotive, aerospace, heavy machinery, electronics, packaging, and construction materials, where large-scale displacement and profile measurement are critical. Typical applications include thickness inspection of sheet materials, warpage and flatness analysis, dimensional verification of large components, and monitoring of long-stroke movements.

In summary, the Keyence LK-G502 Laser Displacement Sensor Head offers a unique balance of extended range, fine spot precision, micrometer-level repeatability, and high-speed sampling options. It provides engineers with a versatile and reliable tool for capturing accurate measurements across large targets, ensuring efficiency and quality in advanced industrial automation.