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OpenHumidistat: Humidity-controlled experiments for everyone
Humidity control is a crucial element for a wide variety of experiments. Yet, often naive methods are used that do not yield stable regulation of the humidity, are slow, or are inflexible. PID-based electropneumatic humidistats solve these problems, but commercial devices are not widespread, typical...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9058855/ https://www.ncbi.nlm.nih.gov/pubmed/35509938 http://dx.doi.org/10.1016/j.ohx.2022.e00288 |
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author | Veldscholte, Lars B. de Beer, Sissi |
author_facet | Veldscholte, Lars B. de Beer, Sissi |
author_sort | Veldscholte, Lars B. |
collection | PubMed |
description | Humidity control is a crucial element for a wide variety of experiments. Yet, often naive methods are used that do not yield stable regulation of the humidity, are slow, or are inflexible. PID-based electropneumatic humidistats solve these problems, but commercial devices are not widespread, typically proprietary and/or prohibitively expensive. Here we describe OpenHumidistat: a free and open-source humidistat for laboratory-scale humidity control that is affordable (€500) 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. |
format | Online Article Text |
id | pubmed-9058855 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-90588552022-05-03 OpenHumidistat: Humidity-controlled experiments for everyone Veldscholte, Lars B. de Beer, Sissi HardwareX Article Humidity control is a crucial element for a wide variety of experiments. Yet, often naive methods are used that do not yield stable regulation of the humidity, are slow, or are inflexible. PID-based electropneumatic humidistats solve these problems, but commercial devices are not widespread, typically proprietary and/or prohibitively expensive. Here we describe OpenHumidistat: a free and open-source humidistat for laboratory-scale humidity control that is affordable (€500) 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. Elsevier 2022-03-09 /pmc/articles/PMC9058855/ /pubmed/35509938 http://dx.doi.org/10.1016/j.ohx.2022.e00288 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Veldscholte, Lars B. de Beer, Sissi OpenHumidistat: Humidity-controlled experiments for everyone |
title | OpenHumidistat: Humidity-controlled experiments for everyone |
title_full | OpenHumidistat: Humidity-controlled experiments for everyone |
title_fullStr | OpenHumidistat: Humidity-controlled experiments for everyone |
title_full_unstemmed | OpenHumidistat: Humidity-controlled experiments for everyone |
title_short | OpenHumidistat: Humidity-controlled experiments for everyone |
title_sort | openhumidistat: humidity-controlled experiments for everyone |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9058855/ https://www.ncbi.nlm.nih.gov/pubmed/35509938 http://dx.doi.org/10.1016/j.ohx.2022.e00288 |
work_keys_str_mv | AT veldscholtelarsb openhumidistathumiditycontrolledexperimentsforeveryone AT debeersissi openhumidistathumiditycontrolledexperimentsforeveryone |