Lars Veldscholte mail
OSHWA UIDNL000006 Project Website
December 08, 2021
OpenHumidistat is a free and open-source humidistat for laboratory-scale humidity control that is affordable (=€400) and easy to build. The design is based around mixing a humid and dry air flow in varying proportions, using proportional solenoid valves and flow sensors to control flow rates. The mixed flow is led into a measurement chamber, which contains a humidity sensor to provide feedback to the controller, to achieve closed-loop humidity control.
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