Parker-Hannifin Corporation
REMOTE MEASURING LIQUID LEVEL SENSOR FOR INTERMEDIATE BULK CONTAINER APPLICATIONS
Last updated:
Abstract:
A sensor system is described that can be attached to the outside wall of a nonmetallic container located within an outer cage, and that measures with high resolution a level of liquid inside the container using capacitance changes at the sensor system. The sensor system includes a sensing element having a metal channel that houses a foam ribbon, and a conductive strip is applied to the foam ribbon oppositely from the metal channel to form a capacitor. Sensor electronics can determine capacitance changes from which the liquid level is determined, and can transmit sensor information wirelessly to an external electronic device. The sensor system further includes a compression assembly for fixing the sensing element to the cage while maintaining the sensing element applied against an outer surface of the container in a highly conformable manner. The compression assembly includes components for attachment to the cage bars, and one or more springs bias the sensing element against the container.
Utility
10 Jan 2022
14 Jul 2022