Massecuite supersaturation monitor
US4875940A · kind A · utility
1Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides an apparatus for controlling both the supersaturation of the mother liquor and the crystal content of massecuite by measuring di-electric constant and electrical conductivity at radio frequencies by means of a probe which is included in a circuit which may be tuned to a fixed setting or may be variably tuned, the combined impedance is measured as a function of the tuning and the measurements are compared with predetermined desired values. By suitable combination of the two signals, measurement of crystal content and mother liquor supersaturation can be controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.