Disposable sensor
US5017875A · kind A · utility
18Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two lead wires for each, connected to opposite ends of a heat generating element are secured to a holder. These lead wires form four-point-terminals at their other ends and thereby a disposable sensor is provided. A current source and a voltmeter are connected to the terminal and changes in various properties of fluid are determined on the basis of a value of current supplied from the current source and a value of voltage measured by the voltmeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.