Method for measuring the moisture content of a web of goods on a through-flow dryer and device for working the method
US5625962A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1994 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Aug 31, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D22/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The position of the exhaust air flap of a through-flow dryer, for example, a screen drum dryer, is adjusted to determine the moisture content of the exhaust air. This is advantageously accomplished as a function of the desired drying temperature of the goods or their moisture content when the good leaves the dryer. Provision is made according to the invention to measure the temperature of the air after passing though the web, at least in the vicinity of the outlet of the dryer, to relate it to the temperature of the ambient air and thus to determine the temperature of the goods and hence their moisture content, since in the residual drying range, the moisture content of the goods is a function of the temperature of the goods. The exhaust air moisture content can then be regulated with this measured value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.