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What humidity sensor do you recommend for 85+% humidity fruiting chamber?


notplants
(@notplants)
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Joined: 1 month ago
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I've searched and found some related questions, but haven't found any list of humidity sensors that are reliable with high-humidity environments.

It would be great to have a list of these sensors somewhere. I'm cultivating grey oyster mushrooms, so looking for 85%+ rh.

Here are the relevant posts I found so far:

Here @not_5 noted the BME680 can work in high-humidity.

Here @kylegabriel recommends the HTU21DF, SHT31, BME280/680, and AM2315 (but were you recommending these all for 85+ rH high-humidity environments, or are some better suited for high-humidity?)

Here @gossen mentions they had difficulties with the DHT22 and the AM2315 in high-humidity environments.

Also appreciate in the manual that it lists all the supported sensors, but would still be helpful to see a list of which ones work well with high humidity.

This topic was modified 1 month ago 2 times by notplants

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Kyle Gabriel
(@kylegabriel)
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Take a look at their datasheets. They will list the recommended ranges. That being said, 85% is not that high as far as the ranges I typically see for these kinds of sensors, which typically have a high of ~90% relative humidity. For prolonged very high humidity (90+%), you might want to consider using two temperature sensors with the wet/dry-bulb function.

Mycodo Developer


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Kyle Gabriel
(@kylegabriel)
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The supported device sections of the manual are generated from the metadata within each input/output/function module. I've been slowly expanding the metadata these contain to make the manual pages informative. The next step may be to add a short specifications entry to list the general characteristics of any device(s) associated with the module. Though, this becomes tricky if a module supports multiple devices (e.g. SHT3x).

Mycodo Developer


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notplants
(@notplants)
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Joined: 1 month ago
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@kylegabriel thanks! The datasheets are helpful, I just imagine it could also help others getting started to see a quick list. Or a list from people who've actually used the sensors in a mushroom chamber and had good results. Not your responsibility to make it of course just imagining it would be nice, and what you described with the auto-generation sounds like it would be great to have those specs right there.


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