Reducing product loss in food and beverage processing

In food and beverage manufacturing, maximising product yield remains a key operational priority. While many processors have successfully deployed optical sensors to optimise Clean-in-Place (CIP) procedures, product losses during process transitions remain a significant, often overlooked source of inefficiency.

Transitions between product and water, water and product, or between different products are frequently managed using time-based or volume-based phase separation methods. Although these approaches offer a degree of process security, they rely on estimated rather than actual process conditions. The result can be unnecessary product losses to drain, or conversely, the risk of water or residual product contaminating the final product stream.

By introducing real-time optical measurement, manufacturers can gain direct visibility into the composition of liquids flowing through process lines. Rather than relying on predetermined switching points, operators can make control decisions based on real-time process data, improving both accuracy and efficiency.

Understanding the cost of the mixed phase

Every product changeover creates a transient mixed phase between two liquids. This occurs when product is displaced with water, when production switches between recipes, or when a line is prepared for packaging operations.

Without clear visibility of what is happening inside the pipe, automation systems are typically configured with conservative switching delays to reduce the risk of contamination or dilution. While these delays may appear insignificant on an individual cycle basis, their cumulative impact can be considerable. Product loss, increased wastewater volumes, higher treatment costs and additional reprocessing requirements can all erode profitability.

For dairy producers, breweries, beverage manufacturers and other hygienic processing operations, even modest improvements in phase separation efficiency can deliver measurable operational benefits.

Real-time turbidity measurement

Optical turbidity measurement provides continuous monitoring of liquid characteristics within the process line, enabling accurate detection of changes between different process phases. This allows manufacturers to identify the precise interface between product and water, or between two distinct products, rather than relying solely on fixed timing sequences.

The technology can support a number of critical process applications:

Product-to-water and water-to-product transitions - During product recovery and line cleaning operations, optical sensors can accurately identify when product gives way to water and when product flow resumes. This enables automated valve control at precisely the right moment, helping to maximise product recovery while minimising losses to drain.

Product-to-product changeovers - In facilities that produce multiple recipes or product variants, optical measurement can accurately detect differences between products. This supports faster, more efficient changeovers, reduces the risk of cross-contamination, and contributes to more consistent product quality.

Packaging line protection - Maintaining product integrity at the filling stage is essential. Real-time monitoring helps ensure that only the correct product reaches packaging equipment, reducing the likelihood of diluted or mixed product entering the filling process and safeguarding both quality standards and brand reputation.

Extending the benefits beyond CIP

Although optical sensors are widely recognised for their role in CIP optimisation, their value extends far beyond cleaning applications. The same measurement principles can be applied to product recovery, phase separation, quality assurance, wastewater monitoring and overall process optimisation.

Replacing estimated process control with real-time measurement data allows manufacturers to improve both sustainability and operational performance. Less product is wasted, wastewater volumes are reduced, and operators gain greater confidence in managing critical process transitions.

Designed to detect changes in liquid properties in real time, Satron LUMINA sensors enable production and automation teams to optimise phase separation based on actual operating conditions. Available with a variety of hygienic process connections, the sensors can be integrated into a wide range of food and beverage applications.

Combining robust hygienic design, maintenance-free operation and continuous real-time measurement, the technology supports improved process control, increased plant availability and consistent product quality.

A data-driven approach to product recovery

Reducing product losses is no longer solely a sustainability initiative. It is increasingly recognised as a key contributor to manufacturing performance and profitability.

By adopting real-time optical measurement, food and beverage manufacturers can move beyond estimated phase transitions and towards data-driven process control. The result is improved product recovery, enhanced quality assurance, reduced wastewater loads and more efficient production operations.

For processors looking to identify hidden losses and optimise process performance, greater visibility into transition phases may reveal one of the most significant opportunities for improvement. Through technologies such as Satron's LUMINA optical sensors, manufacturers can gain the process insight needed to recover more product, reduce waste and improve overall operational efficiency.