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What is a turbidity meter and how does it work?

Turbidity, a measure of suspended solids in a liquid, is used as a measure of water quality and can be used as a way for processors to cut waste, improve sustainability and control consumables. Turbidimeters detect the moment a liquid medium reaches predetermined specifications.

How to use a turbidimeter?

With growing concerns about industry's impact on the environment, turbidity sensors are a desirable way to reduce waste and increase product yield. In-line turbidimeters should be installed at vantage points in the process to facilitate immediate detection of liquid media. Examples of applications for turbidimeters include:

  • Phase separation of products (e.g. whey – cream – milk)

  • Phase change, product to product, product to water and water to detergent

  • CIP return line (monitoring of pre-flush water)

  • Brewery Yeast Harvest

  • QC

  • Leak detection of filters and gaskets

  • raw material bin

What is a Turbidity Meter and How Does It Work?  Picture 1

How does a turbidimeter work? What can a turbidimeter measure?

By using an LED light source, a Turbidity Meter determines the level of particulate matter in water or other fluids. Our turbidity partner, Anderson-Negele, defines turbidity as "a phenomenon in which a specific portion of a light beam passing through a liquid medium is reflected by undissolved particles. Sensors measure the light reflected by these particles to determine their presence in the liquid. concentration.” For example, pure water has almost zero undissolved particles, while ice cream mixes have a high concentration.

Measuring principle of relative turbidimeter

Infrared diodes shine infrared light into the medium. Particles in the medium reflect the radiated light which is detected by the receiving diode (backscatter principle). The electronics calculate the relative turbidity of the medium from the received signal.

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