Food and Beverage
Sensors for use in food applications that can withstand CIP cleaning and deliver accurate, reliable measurements.

Bottle Wash Process

The cleaning of casks, kegs, and bottles varies depending on the material, the beer type, the machine type and the cleaning philosophy in the brewery. Cleaning ranges from cold and hot water sprays with a final steam disinfection to complex cleaning sequences including cold and hot rinses, hot alkaline cleaning (75 – 85°C) and hot acid cleaning (60 – 70°C). The efficiency of the final steam disinfection can be increased by injection of suitable disinfectants. Finally cleaned containers are visually inspected for cleanliness.

A specific problem in cleaning can be residual carbon dioxide that reacts with alkaline cleaning solutions by converting sodium hydroxide of the washing solution to sodium carbonate or bicarbonate. CO2-purging systems have often been not as effective as intended. In many cases, it was possible to introduce a single stage acid cleaning to solve the CO2-problem.

Sensors and Conditions

pH Sensors for Bottle Washing Process

Goal of Measurement:
Detect acid or caustic washing solutions.

Range: Resolution: Interference: Sensor Type: Armatures:
pH 1 to pH 14 0.1 pH None POLILYTE PLUS
Other Conditions: Applications: Benefit of Sensor:
None N/A Long sensor life time.

Part Number
Polilyte Plus Arc 425
Polilyte Plus Arc 325
Polilyte Plus Arc 225
Polilyte Plus Arc 120
FlexiFit Bio
FlexiFit U Bio
Polilyte Plus VP 120
Polilyte Plus VP 225
Polilyte Plus 120
Polilyte Plus 225
Polilyte Plus 325
Polilyte Plus 360
Polilyte Plus 425
Polilyte Plus VP 325
Polilyte Plus VP 360
Polilyte Plus VP 425
Hygienic Socket DIN 1.4404
Hygienic Socket DIN 1.4435
Hygienic Socket DIN 1.4571
Hygienic Socket DIN 2.4602
Polilyte Plus MS 120
Polilyte Plus MS 225
Polilyte Plus MS 325
Polilyte Plus MS 360
Polilyte Plus MS 425
Polilyte Plus HF MS 120
Polilyte Plus HF MS 225
Polilyte Plus VP 120 (Pt100)