Method for measuring the moisture content of a web of goods on a

Details Method for measuring the moisture content of a web of goods on a Method for measuring the moisture content of a web of goods on a

1994-08-31

1997-05-06

Lopez, F. Daniel

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34491, 34495, 34528, F26B 300

Patent

active

056259620

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.

REFERENCES:
patent: 3338411 (1967-08-01), Von der Gathen et al.
patent: 3363326 (1968-01-01), Weeks
patent: 4204337 (1980-05-01), Roos et al.

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