Processing Magazine

Unit continually measures milk protein content in the dairy process

November 10, 2009
The unit makes it possible to measure the protein content of milk and other milk products directly in the process line. It can be easily integrated into control loops as it continually determines the current protein content and provides that information to the control system. The unit features non-contact measurement of protein content in the process, extremely accurate measurement every second, up to four optical sensors in one device, including scatter, fluorescence, refraction and transmission, and up to 12 different wavelengths from ultraviolet to infrared. Plus it requires no daily cleaning or recalibration. The unit is ideal for use in control loops and process monitoring. Typical applications include strategic increase in protein content in kettle milk by adding protein concentrate as retentate from an ultrafiltration (UF) plant, protein standardization of kettle milk by setting a constant fat to protein ratio, and measurement and control of protein content in UF membrane plants when concentrating whey. The unit has a number of innovative design features that enhance its performance. Its hygienic process connection is easy to clean, and the measuring section is certified to both 3-A Sanitary Standards, Inc. (3-A SSI) and European Hygienic Engineering Design Group (EHEDG) standards, and also conforms to FDA regulations. The compact electronic unit is extremely flexible and can be installed anywhere, thanks to a serial interface – either in its own stainless steel housing or integrated into a control cabinet on site.