Flow measuring in filling technology

In 1983 a completely new era started for filling technology!

BREITNER implemented a trend-setting idea … flow measuring in filling machines. Up to that time flow measuring was mainly used in process technology. The usage in fillling machines provides unimagined possibilities for filling liquid and paste-like media.

The entire product supply consists of a simple pipe system with smooth walls so that cleaning the parts coming into contact with the product can be conducted quickly, also under real CIP/SIP conditions.

High availability, absolutely no need for maintenance and the lack of typical wear and tear parts furthermore underline the advantages of this dosing system.

If filling 20 g or 20 l, if filling mayonnaise, shampoo or plant protecting agents, BREITNER filling machines are ideal for almost any requirements.

When filling liquids on a machine with flow measuring technology the amount of product flowing into the container via the filling pipe is registered by the flow meter, integrated in the pipe system. The data are then digitalized and signalled to the machine control by means of pulses.

The machine control processes the received pulses and compares them continuously to the set required value (set dose) and the current actual value (dose signalled by the flow meter). As soon as the set dose is reached the filling pipe is closed off automatically.

There are basically two different types of flow measuring:

Inductive flow measuring

An electric conductor of a fixed length (in our case the measuring pipe diameter) is moved through a magnetic field at a particular speed. An electric voltage is thus induced. This voltage is proportional to the movement speed of the conductor. Using this measurement signal and the diameter of the measuring pipe the device electronics calculate a flow rate.

Mass flow measuring

If a moving mass is subjected to vibrations lateral to its direction of movement this results in the occurrence of coriolis forces depending on the flow of the mass. The thus resulting vibrations of the measuring pipe (phase displacement) is evaluated by the measuring system.

Inductive flow measuring or mass flow measuring?

The measuring principle of inductive flow measuring is based on Faraday’s law of induction. The product to be measured must have a minimum conductivity of 50 µS/cm. If the conductance of the product is not sufficient, it can only be measured using the mass flow measuring principle. 

Mass flow measuring is based on the principle of the coriolis force. The product does not have to be conductive. Machines with mass flow measuring technology are also available with EEx or ATEX protection. The disadvantage of mass flow measuring is its higher price in comparison to the price of inductive flow meters.