Moisture content measuring system
US4964734A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 5, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | May 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N5/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to make it possible to measure the moisture content of coal on an on-line basis with a high degree of precision, a moisture content measuring system including a sample container for holding a sample, a weighing instrument having a turntable adapted to rotate with the sample container placed thereon, an A/D converter responsive to a signal from the weighing instrument, a calculator responsive to a signal from the A/D converter for calculating the moisture content of the sample, an indicator responsive to a signal from the calculator and a microwave generating and irradiating apparatus for heating the sample, is improved. The improvements reside in that the system includes a hot gas generator for heating the sample with hot gas at a low temperature, and a dehumidified dry air circulating means for removing moisture from the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.