Quote:
Originally Posted by riffwraith
But the timer turns the humidifier on and off based on time - I need it to turn the humidifier on and off based on RH.
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Sigh...the timer can still work but it will take some trial and error on your part to figure out how to make it work. You'll need a watch, a hygrometer, and the humidifier.
Scenario: Your room naturally sits at let's say 20% RH without any type of humidifier at all. Let's say you prefer the room to hover around 40%.
Turn the humidifier ON and note the time.
You also start watching the hygrometer readings and continue watching until the room registers 40%. Turn the humidifier OFF.
Note the time. Let's say the elapsed time was 1 hour.
Voila! Now you know
how long your timer cycles need to be under normal circumstances: 1 hour.
The next step is to figure out how
often the humidifier needs to cycle in order to maintain that higher RH level over time.
Note the time you turned the humidifier OFF.
Then keep track of how long it takes the room to drop back down to that 20% RH level.
Let's say it takes 3 hours.
Voila! Now you have a good idea how long it takes the room to get too dry again. That sets the time interval
between humidifier cycles.
It is more work to figure this out but it can be done with relatively simple tools.