Page 16 - Industrial Technology EXTRA 20th July 2020

FOOD AND BEVERAGE...

Retrofitted inductive sensors

watch over dairy’s valves

During the manufacture of dairy products, raw milk travels between successive

processes through stainless-steel pipework. Rotary-shaft control valves ensure that
no cross-contamination occurs during CIP cleaning after each batch is completed.
Robust washdown rated inductive sensors from Contrinex, mounted on existing
rotary actuators, enable monitoring of the control-valves around the clock
t a dairy-processing plant, milk products, electrical, hydraulic or pneumatic actuators.
made from pasteurized or raw milk, Multiple rotary-shaft valves deliver raw milk from
require hygienic transportation between holding tanks to each process station in sequence,
Asuccessive operations. Process engineers maintaining specified flow rates and volumetric
use stainless-steel pipework to transport liquid limits. Once processing of each batch is completed
ingredients from one operation to the next. Fluid and all process vessels are drained, closed-loop CIP
flow is managed using control valves fitted with cleaning commences. Accurate, repeatable valve
sequencing is essential to prevent any chance of
cross-contamination between processing and
cleaning sequences.
A robust, highly reliable sensor system,
capable of withstanding the harsh washdown
regimes in force, is needed to monitor control-
valve positions during processing. Where