Electronic – Sensor For Continuous Water Level Measurement

levelsensorwater

I am designing water level controller for water tank and want to show the water level in LED bar Graph

I know how to transmit data to MCU and show level to LED bar graph but my problem is to find the sensor for continuous level measurement i searched in google and find out that there are floating switch type device which track discrete level.
But that will not measure the continuous level of water and i also came across ultrasonic sensors that measure the level continuously

Is ultrasound sensors are reliable and efficient method?

My other question is what type of other sensor are available that can measure water level continuously and efficiently?

Best Answer

A bit of googling helped:

With some liquid media, however, these ultrasonic waves are absorbed rather than reflected. If you’re thinking about using an ultrasonic level sensor, be sure that your liquid medium reflects ultrasonic sound rather than absorbing it.

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Agitated liquids, turbulent liquids, foaming, sloshing, and other activity can hamper the performance of ultrasonic sensors. In applications where liquid agitation is common, ultrasonic sensors may therefore be a poor choice.

Alternatives mentioned: submersible pressure sensors (hydrostatic pressure level sensor), optical liquid level sensors

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