Ultrasonic sensors emit short bursts of very high frequency sound waves. When the sound waves strike an object, an echo is reflected back to the ultrasonic sensor. The time it takes for the sound to travel to the object and back is measured and converted into a distance. This information may be used for both position and level sensing applications. Ability to solve challenging applications Ultrasonic sensors are similar to photoelectric sensors in their ability to detect targets at long ranges. Since they operate by sensing sound, ultrasonic sensors are not subject to interference from light sources such as UV or direct sunlight. Ultrasonic sensors are capable of sensing irregular-shaped targets including objects with holes. They are particularly well suited for sensing sound-reflecting targets regardless of their color, transparency or surface reflectivity. The solution for a wide variety of position applications Features:

Ideal for sensing clear objects and diffuse sensing of targets at long ranges (up to 2.2 meters), such as automobile windshields.

Detects full or empty positions in stack height control applications.

Senses position of the material loop so the roller speed can be adjusted as required for non- contact web loop control.

Detection of roll diameters to determine when the material will run out; or for stamping applications where shiny metal surfaces can be challenging to detect with photoelectric sensors.

Well suited for level applications with liquids and materials with uneven surfaces such as granules and powders.

Very large detection range

Intuitive setting of the detection range via push button

Clearly visible LED for indicating switching status and echo

Output function normally open / normally closed programmable

Non-contact detection independent of color, transparency or surface characteristics of the object