Getting reliable measurements no matter the weather
Most facilities, including this northern California municipality, use ultrasonic sensors to track the water levels’ rise and fall multiple times a day. In most municipalities across the country, filtration bays are located indoors to protect the process from outside influences, like freezing in the winter. However, freezing isn't a concern in northern California, so this municipality kept their filtration bays outside. While northern California doesn’t need to worry about freezing water, they do see their share of sunshine throughout the year as well as rain in the winter and fog in the summer – all of which can cause errors for ultrasonic devices.
Measurement errors became routine for operators when fog rolled in or it began to rain. They needed a cost-effective solution to accurately measure the water level in all types of weather – sunshine, rain, and fog. After discussing their ongoing issue with their VEGA representative, it became clear the VEGAPULS WL S 61 would be the solution they needed. That’s because radar signals are unaffected by temperature, rain, and fog. With a price point similar to the ultrasonic transmitters they had been using, the VEGAPULS WL S 61 was the ideal, economical replacement.
Since installation, the water treatment plant has seen a lot of sunshine, a number of rain events, and its fair share of fog without a single measurement error in all that time. All five VEGAPULS WL S 61 sensors are reliably monitoring the ups and downs of the water levels in each filtration bay, giving operators the control they need for their filtration process.