19 February 2013
Designed for measuring fluid or granular material in non-metallic containers, the sensor electrode design and configurable software are said to provide higher accuracy with lower hardware cost and easier installation.“Many factors go into customer selection of fluid-monitoring equipment for industrial and commercial processes,” expalined Steve Fulton, engineering manager at Molex. “Capacitive fluid-level sensors solve the challenge of detecting substances in containers for continuous and threshold measurement without directly contacting the materials.”Custom designed capacitive fluid-level sensors are optimised for medical intravenous (IV) drip-feed bags, automotive fuel tanks, agricultural fluid tanks, hydraulic fluid and pump controls, beverage dispensing systems and other industry applications. Featuring multiple output interface options the sensors offer a customised interface for virtually any application requirement. They promise to deliver accuracies of 95% in auto mode and 98% when calibrated manually. The embedded software can be configured for maintenance-free auto-calibration or manual calibration to maximise sensor accuracy.Equipped with flexible circuitry, which conforms to the container shape via pressure-sensitive adhesive, the capacitive sensors are simply mounted to the outside of a container allowing measurement of caustic fluids, in addition to granular and pulverised materials. They can measure through almost any non-metallic material. Featuring solid-state capacitive technology with no moving parts, they can eliminate problems of mechanical wear. The new fluid-level capacitive sensors can be mated with virtually any Molex interconnect or cable assembly. They are fully compatible with integrated designs using Molex customised user interfaces, including membrane switches and capacitive touch technology.
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