Proper mounting is critical for an ultrasonic sensor. Mounting mistakes are one of the most common installation pitfalls with ultrasonics. We’ve consulted with our experts at Automation Product Group, Inc. (APG) to create this handy guide on installing ultrasonic level sensors.
Here are a few practical guidelines that can help ensure trouble free installation for your ultrasonic level sensors.
- Make sure the face of the sensor is perpendicular to the target surface. If the sensor is a few degrees off perpendicular, the target may not be detected.
- Mount the sensor in a location that provides an unobstructed column of air from the sensor to the target. Generally speaking, you need a 3–4 foot diameter unobstructed column even at longer ranges. Stilling wells provide a good solution for liquid level applications where an unobstructed path to the target is difficult.
- Always mount the sensor above the highest anticipated target level by at least the minimum blanking distance. The blanking distance is usually between 4–12 inches, depending on the model sensor you are using.
- Mount the sensor away from any fill spouts. Mounting too close to the spout could result in false readings. White noise can also be a problem, as it can interrupt the sound wave.
- Avoid mounting the sensor in the direct center of a tank if there’s a domed top. The shape of the top could amplify small undesired signals inside the tank.
- Mount the sensor away from tank walls, especially if the walls are corrugated or if there will be product buildup on tank walls.
- If the sensor will be mounted outdoors, try to shade the sensor from direct sunlight. This can harm the sensor housing and cause overcompensation for temperature as the sensor heats up.
Following these simple guidelines can help your ultrasonic level sensor perform to its maximum capabilities and provide you with worry free readings.
If you have any questions, please feel free to reach out to our Sales Team. They’ll be happy to provide you any assistance you need.
WRITTEN BY
Sami T.
Sami Thompson is APG’s Marketing Technical Writer and has been with the company since 2022. With a master’s degree in English from Utah State University and a 40-page thesis publication under her belt, Sami has a demonstrated strong writing background. In her free time, Sami enjoys reading and birdwatching.