Talk:Bi-Strip Hygrometer

From Saltwiki
Jump to navigation Jump to search

Author: Hans-Jürgen Schwarz



back to Air Humidity Measurement

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 bimetal 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.

SLeithaeuser 12:39, 28 October 2012 (CET)