Good measurement, good yogurt

Florian Burgert

The yogurt producer La Fageda has found success in its 25 year history by hiring a diverse team of people from all backgrounds and abilities. Their own personal recipe has been a mix of solid personal commitment, locally-sourced ingredients, and a clever marketing concept.

The goal: Produce the tastiest yogurt. And you do that by charting your own course, even it it means veering from the production methods used by the market leaders in the food industry. La Fageda is located in the Garrotxa district, and it's one of the region's largest employers. The company has seen regular growth every year, and they've expanded their portfolio to include ice cream, jam, and desserts.

Guided wave radar measurement for strict hygiene requirements

La Fageda professionalized its production and marketing at an early stage, solidifying their success from the start. La Fageda's production has always been subject to the same standards of productivity and hygiene commonly found in the food industry.
VEGA sensors control the level to keep the yogurt filling process running smoothly.

Strict requirements are placed on the filling equipment, which has to function like clockwork. This is where the yogurt is fed into the filling machine. As yogurt and various dessert varieties fill the small feed container, the level is continuously measured. A constant level measurement ensures the filling machine does not come to a standstill. Every hour, 12,000 yogurt cups are filled in the one machine, and another 20,000 in two other machines.

Until recently, there was no continuous level measurement here. They only had capacitive sensors, which only provided operators with high and low point level measurements. The company wanted to optimize the filling process, and an engineering company recommended the VEGAFLEX 81 guided wave radar sensor, which is used in many industries because of its reliability and versatility. VEGAFLEX guided wave radars can output accurate measurements regardless of temperature, pressure, and vacuum.

VEGAFLEX is immune to foam, buildup, pressure, vacuum, and high temperatures

Inside the filling vessel, the yogurt passes through a funnel and into a container with a small agitator at the bottom, and all of this combined results in a challenging situation for level measurement instrumentation. Only a small amount of the yogurt sticks to the probe of the VEGAFLEX 81, but because of the self-cleaning system inside, this never causes any issues. The small agitator can also lead to inaccurate measurements because it causes foam to form. Fortunately, the VEGAFLEX 81 is immune to the foam, and it can still deliver reliable measuring results, which ensures the filling system runs smoothly.

La Fageda gets its name from the huge beech forests that surround the property.

The strong focusing and wide dynamic range of VEGAPULS 64 ensure reliable measured values

CIP systems are essential for hygienic production. VEGA sensors continuously measure the level of the cleaning agent for the cleaning and sterilization of the production equipment.
At another measuring point, the non-contact radar level sensor VEGAPULS 64 was used. These instruments are located in two CIP return tanks in another part of the facility. One of them contains water and soda (3% Na2CO3) and the other holds water and 3% acid to ensure CIP cleanliness. In the two tanks, VEGAPULS 64 continuously measures the level of the cleaning agent used for cleaning and sterilizing the system. The foam generated by the soda and the constant circulation of the liquid became a challenge. It can have an adverse effect on the level measurement.

The extremely tight focusing and high dynamics of the sensor enable precise, reliable measurements in the cleaning fluid tanks. Similar to the previous application, the company never had a continuous level measuring device − only capacitive sensors that signaled the minimum and maximum level. After the installation of the VEGAPULS 64 radar sensors, these are now used as alarm sensors. Now, the company can optimize the process flow here and utilize the advantages of continuous level measurement.
 

One of La Fageda’s special features – company-owned cows deliver the milk for the yogurt.
La Fageda was impressed by the reliability of the measuring instruments, as well as the partner-like collaboration with VEGA. Thanks to the equipment and sophisticated technology with solvents, La Fageda’s employees can concentrate on their main task – producing the tastiest yogurt in Catalonia.

Related articles

Topics

Comments

Write a comment

Share this article

VEGA Americas, Inc., 3877 Mason Research Pkwy, 45036 Mason, OH
americas@vega.com · +1 513-272-0131