Level Measurement

Measuring the level of a medium in a tank is a fundamental requirement in many industrial processes/ automation. For liquid applications, accurate level measurement is essential for safe and efficient operation. and level measurement commonly used for process control and safety interlocks

Continuous Level Measurement

Several technologies are used to continuously monitor liquid levels:

Reed Chain Technology: Uses a magnet-equipped float to activate reed switches along a chain.
Magneto strictive Level Measurement: Very accurate method using a float and probe to detect position changes.
Hydrostatic Level Measurement: Determines level based on liquid pressure at the tank bottom.

These methods typically use floats, level probes, or level sensors.

Point Level (Limit Level) Detection

For detecting high or low levels, level limit switches are used. A proven approach includes:

Capacitive Level Measurement: Measures changes in capacitance caused by the presence of the medium.

Modern Measurement Trends

Ultrasonic level measurement has become increasingly popular due to its advantages:

Non-contact measurement
Suitable for various liquids and some solids
Low maintenance due to no moving parts
Reliable performance in many industrial environments

Ultrasonic sensors calculate distance by sending sound waves to the liquid surface and measuring the echo time.