Bi-Strip Hygrometer: Difference between revisions

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back to [[Air Humidity Measurement|Air Humidity Measurement]] <br>  
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== Abstract  ==
== Abstract  ==
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These hygrometers are simple spiral springs made of a metal spring strip, which is covered with a hygroscopic gel layer on one side. They work similarly to the bi-metal springs, i.e. the hygroscopic side expands due to water absorption and a signal is transmitted proportional to the relative humidity. There are now hygrometer springs that do not even yield at a permanent exposure of 100% RH. These metal springs and their absorptive layer have been specially adjusted to reach a low hygroscopic hysteresis and the same accuracy as the [[Hygrometric Measuring Methods|hair hygrometer]].
These hygrometers are simple spiral springs made of a metal spring strip, which is covered with a hygroscopic gel layer on one side. They work similarly to the bi-metal springs, i.e. the hygroscopic side expands due to water absorption and a signal is transmitted proportional to the relative humidity. There are now hygrometer springs that do not even yield at a permanent exposure of 100% RH. These metal springs and their absorptive layer have been specially adjusted to reach a low hygroscopic hysteresis and the same accuracy as the [[Hygrometric Measuring Methods|hair hygrometer]].
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[[Category:Humidity Measurement]] [[Category:Schwarz,Hans-Jürgen]] [[Category:R-SLaue]] [[Category:inProgress]]
[[Category:Humidity Measurement]] [[Category:Schwarz,Hans-Jürgen]] [[Category:R-SLaue]] [[Category:inProgress]]

Latest revision as of 09:42, 4 November 2012

Author: Hans-Jürgen Schwarz

English Translation by Sandra Leithäuser
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Abstract[edit]

These hygrometers are simple spiral springs made of a metal spring strip, which is covered with a hygroscopic gel layer on one side. They work similarly to the bi-metal springs, i.e. the hygroscopic side expands due to water absorption and a signal is transmitted proportional to the relative humidity. There are now hygrometer springs that do not even yield at a permanent exposure of 100% RH. These metal springs and their absorptive layer have been specially adjusted to reach a low hygroscopic hysteresis and the same accuracy as the hair hygrometer.