Level detection device for enclosed tanks
US4268753A · kind A · utility
5Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1979 |
| Grant date | May 19, 1981 |
| Priority date | — |
| Expiry date | Sep 13, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/288
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level detection system utilizing backscattered radiation in which a radiation source is vertically arranged between two radiation detectors along the exterior of a tank, the system automatically moving up or down along the height of the tank in response to radiation received by the detectors to indicate the level of material within the tank. Variations in wall thickness of the tank are automatically compensated for by comparing the electronic signals produced by the two detectors and using the differential signal to drive the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.