ProFoss™ Dairy

The ProFoss™ in-line dairy analyser offers a range of applications for optimising your dairy production, from butter to cheese and dairy powders, using near infrared technology.

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Run production closer to specified targets. Consistent product quality. Optimise for key parameters. Reduced rework.
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Sample type

Butter, fresh cheese, mozzarella, WPC/MPC, dairy powders and cream.
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Fat, protein, moisture, total solids, solids non fat and protein-total solids ratio.

Are you ready to improve your process variation?

Get in touch with our specialists to discuss profit and quality improvement opportunities for your specific production. Get a quote Let's talk

“It gave us so much more control over the process”

In this video Lake Country Dairy explains how they achieved optimal control of moisture levels in their Mascarpone Cheese production with the ProFoss™ in-line cheese analyser.


  • ProFoss Dairy - Dairy powder
    ProFoss Dairy - Dairy powder

    High resolution near infrared technology

    High resolution diode array technology ensures accurate and continuous analysis, giving you a clearer picture of your process. A high number of pixels (diode sensors) in the spectrum secures a more detailed (accurate) and uniform (repeatable) analysis result. 
  • ProFoss Dairy - Dairy powder
    ProFoss Dairy - Dairy powder

    ProFoss™ probes

    Dairy powder probe for in-line analysis of fine powder like dairy powders etc. The powder probe interface can easily be installed into a hopper or pipe with free falling product. The probe has no moving parts. The probe is automatically cleaned with compressed air before each analysis.

    Lateral transmission probe for in-line analysis of slurries and viscous products such as WPC, cream cheese, mozarella etc. The lateral transmittance probe can easily be installed in the production line using a standard GEA Tuchenhagen flow¬cell for installation in a pipe. 
  • ProFoss integration
    ProFoss integration

    Easy integration

  • FossConnect


    FossConnect™ is a centralised networking management solution for ProFoss™ that helps you reduce your production costs and secure the quality of your products. With FossConnect™, you can manage, configure and monitor your instruments remotely from any internet-enabled computer and safeguard your data for whenever you need it.

Webinar: Would you like to reduce your process variation by 50%?

Learn how to reduce your process variation and move your target significantly closer to specification with in-line analysis. For example, a WPC production can use real-time data to reduce process variation by up to 50%. In order to watch this webinar you need to submit the requested information and join our FOSS knowledge community. We will process your personal data in accordance with our Privacy Policy.

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Technical specification

ProFoss Transmittance
Analysis time                                                         Average time per result 15 - 30 seconds
Measurement mode Transmittance (lateral transmittance)
Wavelength range 850 – 1050 nm
Detector Si diode array
Spectral dispersion  1.0 nm / pixel
Light source lifetime Dual lamp system = 17500 h
Software package ISIscan™ for instrument control; ISIcal™ for calibration development
Wavelength accuracy 0.5 nm
Wavelength precision < 0.02 nm 
Wavelength stability < 0.01 nm/°C
Noise < 60 micro AU
Random vibrations
0.4 grms at 10 – 150 Hz according to IEC 60068-2-64
0.4 grms at 10 – 1250 Hz according to FOSS internal standard
(more information available on request)

-5 – 40°C (23 – 104°F). With purge -5 – 65°C (23 – 149°F)
Purge air Flow rate minimum 5 l/min, > 99.9% water free, > 99.9% free of oil and fine particles down to 0.3μm
Ambient humidity 10 – 90 % relative
Dimensions (w × h × d): 42 × 42 × 13.5 cm (16.5 × 16.5 × 5.3 inches) + brackets to hold the unit
Weight 25 kg / 55 lbs
Cabinet 1.5 mm (lid 2.5mm) Stainless Steel EN 1.4301 (SS2333)
Protection IP69K* according to IEC 60529 and DIN 40050 part 9, NT ELEC 023 
Communication Ethernet, OPC “4 - 20 mA, Profibus, RINA
Power supply Recommended isolated or conditioned line power 100 – 240 VAC, 50 – 60 Hz, 2.0 A, 150W
*) IP6x is the highest protection for dust entering the unit. IPx9K means protected against the effect of high-pressure water and/or steam cleaning at high temperature.

Brochures and papers

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