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[Completed] Humidity meter

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Mix
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89935BBF 553A 4090 8F70 82FB06AC2329
0DF2F44E 8B02 4457 B4EC 6D732B552AFD

I have 3 different cheep humidity meters that all read different so I went to look for a decent one & found this witch I scored for £12.50 in a bid or best offer sale. 
there was no bids no I offered that thinking he/she would counter offer but accepted it .. bonus

 

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he’s yet to dispatch & it’s due Monday 🙄 if it alls go south are either of the top ones pictured good names.

 

 

 
Posted : October 14, 2022 6:58 pm
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trout
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I haven't seen humidity meters like that before. Do you have to take manual readings or can you just leave it on in the grow space like most others?

 
Posted : October 15, 2022 1:54 pm
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im_sparky
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I'm not sure about the meter, but wanted to say it is good to you back, bro!

To see a World in a Grain of Sand, And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand, And Eternity in an hour.
― William Blake

 
Posted : October 15, 2022 2:04 pm
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Mix
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Thanks sparky 😋👍

 

it’s manual bud. 
I’ve not found a meter yet you can leave in your grow room thats accurate. This will let me know how much +\- out each one is plus I can use it to spot check. 
Kinda like the difference between a blu lab ph pen & one that cost a fiver if you kwim 

 
Posted : October 15, 2022 6:45 pm
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Sevans
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Most humidity meters I’ve ran across (including my Kestrel weather meter that was over $500) spec. +/- 3% RH. So two different meters could be almost 6% different from each other, but both be within their advertised spec.! For that matter, you could have two of the same reading different, but within spec.

Honor is simply the morality of superior men.

 
Posted : October 15, 2022 7:07 pm
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Sevans
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Wonder why growers don’t focus on dew point, verses humidity ? Dew point is a more accurate measure of moisture in the air !

And could that be why humidity isn’t as accurate, because Temp influences the humidity calculation (Dew point and temp are used to calculate humidity)?

@macky, HOHG question ?

Honor is simply the morality of superior men.

 
Posted : October 15, 2022 7:17 pm
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Mix
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I just noticed something I didn’t before doh I think he’s sold me a sound meter ! 
it was listed as a humidity meter 

either the pics the wrong pic or more lightly it was advertised wrong bah.

i can get my money back easily enough but 🙁

so your saying it’s lightly cheeper versions of the handheld is going to be as much out as the cheep ones we use in the tents.

Both the above are within the £30 range one claims it’s milltery grade but from what you say I am wondering if it’s worth it.

i really do need a meter that reads right 

 
Posted : October 15, 2022 7:21 pm
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@sevans1965 what’s dew point, I’ve seen it Mentioned before somewhere else but I thought they was talking about outside like morning dew

 
Posted : October 15, 2022 7:26 pm
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The reason I’m concerned is because one of the meters read 70% another 63% and the last 53% daytime.

I’ve a new tent set up that I can put a de humidifier in but I don’t want to use it just yet as I’ve got spider mites.

really bothered about the humidity as 70% is danger area esp as it would be higher at night. 

 
Posted : October 15, 2022 7:46 pm
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@mix dew point is the point at which air is cooled enough to be saturated with water vapor, when cooled past a certain point it reduces the ability for that air to hold liquid and will then form condensation droplets or "dew" on surfaces.

I feel like a, like a slice of butter... melting on top of a big-ol' pile of flapjacks... yeah.

 
Posted : October 16, 2022 1:28 am
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