Ultrasonic Level Sensor Limitations: 7 Problems & How to Solve Them
Ultrasonic level sensors measure liquid level by emitting 20–200 kHz sound pulses and timing the echo return. They are non-contact, low-cost, and work well in most water and wastewater tanks — but they fail in 7 specific situations: blanking distance, foam, vapour, vacuum, high temperature, turbulence, and angled or coated surfaces. This guide explains each
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