SpotCheck Product for Hygienic Pigging Systems
A SpotCheck Wash for Well-Known Shampoo

Shampoo packaging line cleaning system relies on SpotCheck for accurate control

When Hygienic Pigging Systems wanted to know when the pipes on a customer's packaging lines for a cosmetic product were empty, the company contacted Canongate Technology Ltd. with a view to using the SpotCheck non-invasive liquid level switch. Hygienic Pigging Systems began trials of the system on a well-known brand of shampoo.

SpotCheck is an ultrasonic level switch designed for use in liquid applications where avoiding contact with the product is vital. Its non-invasive nature ensures that breaking into tanks or pipes is no longer necessary. The transducer is simply mounted outside of the vessel using special adhesive or clamps. The non-invasive transducer differentiates between the different acoustic coupling effects produced by liquid and air and a controller detects a difference in the sonic 'footprint' when the area immediately behind the sensor is covered or uncovered by the liquid. This difference causes an LED warning lamp to illuminate and the relay to change state. SpotCheck is tolerant of suspended solids and gas bubbles and does not trigger on surface foam.

After successful trials on the system, Hygienic Pigging Systems adopted the SpotCheck as the standard product detector for its product recovery system. Since then, the company has been a regular SpotCheck customer.