Liquid measurement can be a demanding application therefore selecting the most effective sensor technology is imperative. Ultrasonic sensors are the ideal solution for distance measurement or position detection of granules, fluids and powders. They measure fill levels, heights and sag without making contact as well as count and monitor the presence of objects. They are extremely versatile, operate independently of color and surface finish, and are not affected by transparent objects that generate strong reflections. And because they are not affected by dust, dirt and steam, they are the ideal choice for critical applications.
Ultrasonic Sensors operate with propagation of sound waves providing a reliable detection source for level detection applications where liquid measurement monitoring is necessary. They will enhance the flexibility of the application with additional advantages of being a non-contact sensor so there are no mechanical floats or arms that can retain residual liquid build up. This residual material can cause machine application downtime as interruption of production is needed to maintain and clean the mechanical monitoring system. Because the distance to the object is determined via a sound transit time, ultrasonic sensors have excellent background suppression. With their transit time measurement, ultrasonic sensors can record the measured value with highly precise resolution (some sensors to even 0.025 mm). Ultrasonic Sensors can monitor
and detect nearly any liquid.
An ultrasonic sensor is not affected by the color, transparency or glossiness of a surface. They can reliably detect bulk materials, liquids and material surfaces. Good reflective materials include:
- Hard foam rubber
Additional advantages ultrasonic sensors provide when monitoring liquid is their ability to have two independent outputs programmed into one sensor. This is a great way to monitor upper and lower liquid levels with one sensor. This sensor feature allows one independent output setting to indicate a minimum level and the second output to indicate a maximum level concurrently providing constant feedback along with a voltage or current output.