Continuous level measurement is a very important process variable either for control, inventory or safety applications is vital information needed for your plant operation.

There are two main types of products to measure level liquids or bulks, with many different characteristics, water base, hydrocarbons, chemicals, powders, granulates, with foam presence, turbulence surface or dusty atmosphere so the selection of the correct level measurement instrument need the assistance of an expert to get the best result for your process.


Measurement Principle

It is based on the principle of time of flight. A sensor emits ultrasonic pulses, the surface of the product reflects them, providing a signal and the sensor detects it. The return time of the reflected ultrasonic signal is directly proportional to the distance traveled. This allows the level to be calculated knowing the geometric shape of the tank.


Applicable for the measurement of liquids and solids. Insensitive to product properties

Non-contact measurement that does not require maintenance. Easy installation and commissioning.

Measurement accuracy ± 2mm + 0.17% of the measured distance

Temperature: -40 to +80 ° C or +150 ° C (-40 to +176 ° F or +302 ° F), Pressure: +0.7 to +1.5 bar (+10 to +22 psi) Range Maximum measurement for solids: 45 m (148 Ft)

Self-cleaning effect thanks to the vibrating diaphragm of the sensor.


Prosonic FMU30
Basic model for level measurement in liquid applications.

Prosonic FMU40
Level applications up to 5 m in liquids or granulated solids.

Prosonic FMU41
Level applications up to 8 m in liquids or granulated solids.

Prosonic FMU42
Level applications up to 10 m in coarse-grained solids and liquids.

Prosonic FMU43
Level applications up to 15 m in coarse-grained solids and liquids.

Prosonic FMU44
Level applications up to 20 m in coarse-grained solids and liquids.

Prosonic FDU90 / 91/92
Sensors for continuous and non-contact level measurement in liquids and solids up to 25 m.

Prosonic FDU91F
Hygienic level sensor in liquids or solids up to 10 m.

Prosonic FMU90
Field mount DIN rail transmitter with connection of up to 2 level or flow sensors in open channel.

ECN Automation
offers comprehensive solutions.

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