Ultrasonic Sensors

Ultrasonic sensors measure distance with sound pulses, so they detect objects regardless of colour, transparency or surface finish, and work in dust and mist that blind optical sensors. Seven Star LLC, an independent supplier in Muscat, supplies ultrasonic sensors from SICK, Turck and Banner Engineering to machine builders, water and process plants in Oman and the GCC.

Types of ultrasonic sensor in this category

Cylindrical M12, M18 and M30 sensors such as the SICK UM12, UM18 and UM30 and the Turck RU series cover ranges from a few centimetres to several metres. Versions with switching outputs detect presence and level points; versions with 4 to 20 mA or 0 to 10 V outputs give a continuous distance signal, for example tank level or roll diameter. Compact rectangular sensors like the SICK UC4 fit tight machine spaces, retro-reflective ultrasonic sensors check a gap against a fixed reflector, and the SICK UF fork sensor detects labels on a carrier web, including clear labels on clear film.

How to select an ultrasonic sensor

Start with the measuring range, including the blind zone close to the sensor face, and the beam angle, which sets how wide an area the sensor sees. Choose the output: PNP or NPN switching, analogue current or voltage, or IO-Link. Check the response time for moving objects and the resolution needed. Temperature affects the speed of sound, so sensors with compensation give better accuracy in hot GCC plant rooms. Soft materials such as foam absorb sound and reduce the range.

Data needed for a quotation

Send the full part number for a replacement, or the target, required range, output, housing size, connection and quantity. We confirm each item against the manufacturer data.