Method and apparatus for measuring concentration of solution or suspension using electrically heating method
US5225334A · kind A · utility
3Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Nov 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q1/06
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
There is provided a circulating line branched from a solution or suspension tank and returning again to this tank through a pump (15) used to control the flow velocity at a constant level. A fluid temperature is measured by a sensor (16) in said tank or said circulating line (14) while a temperature of a heating sensor (17) employing so-called electrically heating method and placed in said circulating line is measured. Concentration of a given subject in solution or suspension is determined based on a temperature of the heating sensor or a difference between a temperature of the heating sensor and a temperature of the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.