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Water Tank Level Monitoring with an Ultrasonic Sensor — China

A customer needed to measure the water level in a tank continuously, without putting an instrument into the water. Contact-type devices — floats and immersed probes — foul, corrode, or jam over time, and any of these turns into a maintenance call. The requirement was therefore a non-contact measurement of the water surface, mounted above the tank.

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Ultrasonic Level Sensor Reading Inaccurate on a Water Tank — China

A customer installed a KUS640 integrated ultrasonic level sensor on a water tank. After installation, the instrument did not read the correct level: it displayed a plausible-looking number, but the value did not agree with the actual water level in the tank. A reading that looks reasonable is harder to spot than an obvious fault, which is what made this case worth recording.

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KLD803 80GHz radar level meter installed on the top flange cover

KLD803 80GHz | Radar Level Meter in Polyurethane Mixer

Why is polyurethane mixing with an agitator a difficult level measurement environment? Polyurethane mixing vessels combine three measurement challenges simultaneously: high viscosity (800–3,000 mPa·s depending on formulation), mechanical agitation creating turbulent surface conditions, and vapor condensation that coats any probe or antenna surface. The polyurethane batch in this case study is processed in a 2,000L

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