BUBBLE-DETECTING SENSORS PROTECT PUMPS FROM UNWANTED DOWNTIME

HELPING TO PROTECT PUMPS FROM running dry and detecting even the tiniest bubbles in flow control applications is a good example of how system engineers can prevent unwanted and expensive downtime due to pump malfunction caused by unwanted gas inclusions.

The PAD20 sensor from Baumer, a finalist in two categories at the recent Pump Industry Awards, is a ‘smart’ sensor that not only protects pumps from running dry but also ensures maximum system performance and optimum resource use.

The PAD20 sensors are an effective, robust solution for detecting air and gas bubbles in any liquid or viscous media, such as fruit preparations and cooling agents (DC>1.5), particularly in harsh ambient conditions. Switching outputs are individually adjustable with IO-Link for definition of switching range, or two-stage alarms (early warning), and they provide optional multi-colour process visualisation through 360º of switching state.

The sensor can reliably and quickly measure air in all types of liquids, regardless of whether they are pasty or viscous.

The PAD20, initially developed for a German dairy company, proved its worth by solving their decades-old problem of containers not being fully emptied. This sensor is not just about protecting pumps; its reliable detection of gas bubbles also optimises the energy efficiency of cooling and heating systems in various industrial applications, making it a valuable asset for any flow control setup.