Application

Level Measurement and Inventory Control in Food Plants

Answer in brief

In a food plant the level sensor is a surface in contact with the product.

That makes mounting and cleanability part of the specification, alongside the measurement itself.

Choose hygienic, flush mounting.
Expect dust during pneumatic filling.
Keep overfill protection independent.

Reviewed October 21, 2026 · Updated October 21, 2026

The problem

Ingredient silos are filled pneumatically, which fills the headspace with dust, and any sensor intruding into the vessel is a cleaning problem.

Desired outcome

A measurement that works during filling, can be cleaned with the vessel and supports both operation and stock planning.

Process approach

Radar performs through the dust of pneumatic filling, with hygienic flush mountings that do not create a ledge inside the silo.

Independent point level switches provide overfill protection and empty indication.

For stock planning, weighing or scanning gives a figure that a single-point level cannot.

Hygienic flush mounting without internal ledges.
Radar for measurement during filling.
Independent overfill and empty protection.

Selection factors

Dust conditions during filling.
Hygienic mounting and cleaning method.
Accuracy needed for stock planning.
Allergen segregation between silos.
Explosion characteristics of the powder.

Common failure modes

Sensor mounting creating a ledge inside the silo
Ultrasonic reading lost during pneumatic filling
Stock figures taken from a single-point level
Overfill protection shared with the continuous measurement

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