G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 25/68 (2006.01)
Patent
CA 2066765
2066765 9201926 PCTABS00010 Dew point hygrometers are either very precise and very expensive, for example mirror dew point hygrometers, or less costly but relatively imprecise, for example electrode arrangements for measuring electrical resistance. The disclosed appliance should be low-priced and at the same time have a measuring accuracy that corresponds to the measuring accuracy of mirror dew point hygrometers. A moisture sensor (8) is spatially separated from but adjacent to a condensate collector (1). The condensate collector (1) is cooled down by a determined temperature difference by a cooling/heating device (2). When during the cooling process the sought dew point temperature is crossed, liquid deposits on the condensate collector. In the following heating phase, the condensate evaporates again and the resulting increase in the vapour content is detected by the moisture sensor (8) arranged above the condensate collector (1). By varying the temperature difference during the cooling phase, the sought dew temperature is iteratively determined. The invention has applications in industrial processes in general, in measurement techniques in general, and for monitoring compressed air installations.
Jasny Werner
Laumen Michael
Fetherstonhaugh & Co.
Jasny Werner
Kww Gesellschaft Fuer Thermotechnik Mbh
Laumen Michael
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