Keyence LR-ZH490CB M18 CMOS Laser Sensor 25-490mm

M18 threaded CMOS laser sensor

The Keyence LR-ZH490CB is a self-contained M18 threaded CMOS laser sensor designed for precise distance detection in industrial automation. It offers a detectable range of 25 to 490 mm with a spot diameter of approximately ø3 mm. The sensor features selectable NPN or PNP output and connects via a 4-pin M12 connector. Three response time settings of 1.5 ms, 10 ms, and 50 ms provide flexibility for different application speeds.

Suits discrete presence detection on conveyors

This sensor suits engineers who need a compact threaded-mount device for discrete presence detection on conveyors or small-part verification. The selectable Light-ON and Dark-ON operation plus OFF-delay, ON-delay, and one-shot timer modes cover common logic requirements. Buyers who need analogue distance output or a longer sensing range should look at alternative sensor types. The unit operates from -10 to +50 °C and withstands vibration at 10 to 55 Hz with 1.5 mm double amplitude.

Detectable distance 25 to 490 mm

The single specification that decides fit is the detectable distance of 25 to 490 mm. Confirm that the target distance and the approximate ø3 mm spot size at that range match the application geometry. The sensor also requires a 1,000 VAC withstand voltage rating for 1 minute at 50 or 60 Hz. Relative humidity must stay between 35 and 85 % RH with no condensation. Storage temperature ranges from -25 to +75 °C.