Foldable and intrinsically safe plate capacitive sensors for sensing depth of solids in liquids and sensing depth of two different types of liquids in hazardous locations
US11474066B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 29, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention comprises a novel foldable and intrinsically safe plate capacitive sensor to measure liquid depths, solids in liquid depths, and two different liquids depths. This invention is used in onsite wastewater management systems (OWTS) to monitor depths of solids, oil, and effluent in a wastewater tank. The plates are configured to allow for solids, liquids and gases to surround the plates. A number of plates are hung in series from near the OWTS tank lid to at least 18 inches below the output baffle to measure the different materials at different depths in the OWTS tank. The capacitive sensors are capable of use with various materials to measure solids, oil, and effluent depths in an OWTS tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.