Instrument for the continuous measurement of viscosity, especially of bitumens
US4165631A · kind A · utility
5Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1978 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Apr 28, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The instrument comprises a viscometer for a product such as bitumen and a pump for transferring the product to a flat wall-type heat exchanger. A channel formed in the heat exchanger wall is brought to an adjustable temperature and the channel output is connected to the viscometer. A probe for measuring the temperature of the product is placed within the viscometer, the temperature being adjusted to an index value within a predetermined range by means of a regulator for varying the pump output and controlling the temperature of the heat-exchanger wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.