Designed for fluid measurement and monitoring, non-contact ultrasonic liquid level sensors deliver continuous and more detailed detection for semiconductor applications. Here, the sensor uses reflected sound to estimate the objects in front. In doing so, it emits sonic waves out, which then get reflected back.
Common Uses
For continuous-level use, the ultrasonic sensor is mounted to the top of the tank, where it then transmits high-frequency sound waves. These waves travel away from the sensor, where they hit the liquid’s surface and then return back to the sensor. Through this application, the sensor offers a greater level of resolution for the semiconductor or high-purity chemicals. In practical usage, this type of sensor may be added to a car or truck, where it measures diesel exhaust fluids to reduce emissions.
As another option, an ultrasonic sensor may utilize what’s called a gap-tipped probe. Here, pulses from ultrasonic sound waves pass around the probe’s gap without interruption, ignoring the attenuated signals transmitted through the air and only recording the stronger ones received when it’s submerged in a liquid. To measure, it references the speed of sound in the air to calculate the distance the sensor is from the liquid surface.
Benefits
Why use an ultrasonic sensor with a semiconductor?
- The device provides accurate readings in spite of variations in transparency, color, dielectric, and viscosity.
- It adapts to a greater range of tank sizes and materials.
- The non-intrusive design prevents direct contact with potentially hazardous fluids.
Think you may need an ultrasonic sensor for one of these applications? Strain Measurement Device presents a few choices: The FL50, a plastic ultrasonic liquid level sensor, offers a cost-effective, general use solution designed to withstand corrosive liquids, and the FL-LL and the FL5K, both stainless steel ultrasonic gap sensors, offer very precise point-level sensing for several specific applications.