Baumer IFRH 18P3501/L Proximity Sensor

The IFRH 18P3501/L: 10153535 from Baumer delivers reliable detection with a 5 mm nominal sensing distance and a flush-mounted cylindrical form factor. It uses a PNP break function (Normally Closed) output that’s highly suitable for fail-safe applications—automatically breaking the circuit when the target is absent or if the sensor fails. This output configuration makes it a go-to choice for safety-critical systems, including emergency interlocks and conveyor stops.

Operating within a wide 6–30 VDC voltage supply range, the sensor consumes just 12 mA under no-load conditions, making it energy-efficient. The 1 kHz switching frequency allows fast and stable signal processing, even in dynamic automation settings. The housing is made from corrosion-resistant stainless steel with a PBT sensing face, ensuring long-term durability in the presence of oil, vibration, or mechanical impact. The sensor has a standard 18 mm diameter and a 71 mm housing length, with a 2-meter cable that provides flexibility for control panel or inline mounting.

Its rugged design supports an extended operating temperature range of -25°C to +180°C and is rated at IP67, offering excellent protection against dust and water ingress. Trusted across multiple industries, the Baumer IFRH 18P3501/L is ideal for engineers seeking robust, fail-safe inductive sensing in challenging environments. The Baumer IFRH 18P3501/L is ideal for applications that demand fail-safe sensing. Its PNP NC output is particularly beneficial in systems where safety and status monitoring are critical—such as in automated conveyor belts, tool position sensors, and safety guards. If the sensor or cable is damaged, the output will default to an open state, triggering a safety alert.

In packaging machinery and robotic arms, this sensor can be used to verify part presence before initiating mechanical actions. The flush mounting design reduces the risk of physical damage, and the stainless steel housing allows it to be installed in washdown or oily environments. Because of its 5 mm sensing distance, it can detect targets even when a protective cover or shield is present.

Whether you're installing new automation lines or upgrading outdated sensors, the IFRH 18P3501/L provides a balanced combination of speed, safety, and endurance. It’s trusted by automation engineers and maintenance teams across manufacturing, food processing, and assembly systems—especially where reliable detection and protection are equally important.