Multiple process product interface detection for a low power radar level transmitter
US6198424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a low power time domain reflectometry radar (LPTDRR) level transmitter for calculating levels of first and second products in a tank. A termination extends into the first and second products in the tank. A pulse generator transmits a pulse along the termination into the first and second products. A pulse receiver receives first and second reflected wave pulses corresponding to reflection of a first portion of the transmit pulse at a first product interface and reflection of a second portion of the transmit pulse at a second product interface, respectively. A threshold controller generates a first threshold for detection of the first reflected wave pulse and a second threshold for detection of the second reflected wave pulse. A dielectric constant calculator determines a dielectric constant of the first product as a function of the first reflected wave pulse. A level computer calculates levels of the first and second products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.