Telemecanique SM552A173NI Dual Level Ultrasonic Sensor

The Telemecanique SM552A173NI dual level ultrasonic sensor delivers non-contact, dual-level detection for two liquids or materials in industrial automation. It is designed for storage tanks, pumping stations, water treatment systems, process equipment, and other industrial fluid-handling applications that require reliable dual-level monitoring. With an OEM direct replacement footprint, it operates on 12–24 V DC (range 10–28 V DC) and offers a selectable PNP/NPN discrete output for PLC integration. Sensing is non-contact ultrasonic, and the unit uses a model-specific industrial connection. The enclosure is ULTEM plastic, and the front is silicone rubber, with an IP67 rating for protection against dust and water. Part of the Hyde Park Superprox 500 series, this sensor is commonly used in water and wastewater treatment, chemical processing, storage tank monitoring, and pump control systems to improve overflow protection and automate process control. The SM552A173NI is an OEM direct replacement and is End of commercialisation.