hygrometer salt test in progress but...

[mommanessy247]

i have this model...



does anyone else have this one & already know what the +/- % difference is on it for the humidity?

also i've read here to do the salt test for 4 hours before checking it but i've read elsewhere its 12 hours...thats a huge difference and i dont wanna leave the humidity in the terrarium unmonitored for 12 hours.
so which is it? 4 or 12 hours?

[mommanessy247]

ok so 4 hrs after beginning the salt test i got a reading of 63%, which is 12% lower then the correct level which should've been 75%.
does that mean all of the humidity readings i've gotten since december have been off by 12%?!

[kitedemon]

Likely. Digital hygrometers take longer to respond than analogue, a few hours but the time needed is also to get the humidity in the bag up to the correct amount. I usually leave mine in over night for at least 8 hours. The snakes will be fine, just do what you usually do and it will be the same or close.

[TheWinWizard]

I usually go 12 to 24 minimum.

[mommanessy247]

oh ok so i didnt run the test for long enough?
thats actually comforting knowing i might've messed up rather then the thought that all my logged readings have been 12 % off for the last 8 months...yikes .
ok so i'll re-do the test tonight...
will 12 hrs be sufficient? if the humidity gets over 90% the accurite will read it as "HI" & then i wont know exactly what it is at that point...so...
does the salt in the soda cap only create 75% humidity even after 24 hrs?

[kitedemon]

yup saturated salt solutions only produce a constant humidity. It varies a little with temps but slightly (less than 1%)

I looked around for specs sheets on the accurite you have (I had the same one) I can no longer find it. Chaney no longer lists any probed accurate products I could find (wireless only) So I have no idea the specs are, but an educated guess is the same as all the competitors that have the same functions 2ºF +/- and 10% humidity +/-.

The three I had 2 out of the box failed the test by 20% or greater and failed temps too being over the 2ºF so they were returned and replaced under warranty. The third passed just under the specs (I am sure temp is 2º+/- I think 10%) I gave it to my dad for his house. I stupidly paid 35$ for it and still feel burned.

[mommanessy247]

wheres a good spot for the baggy while the test is being done? i need to keep it out of reach of my overly curious son...is the top of the fridge a bad spot?
i know its a little warm up there but...hey since the baggy is sealed up nice & tight can i put the whole thing up in a cabinet?
i just cant leave it out on a counter or anywhere in plain sight...

[mommanessy247]

heres a link to something that i think shows specs for this model...

http://www.partshelf.com/acu00891.html

[mommanessy247]

alright...
the salt test went for 26 hrs & i got a final humidity reading of 66%.
9% lower then the targeted 75%.
better then the 12% difference i got before.
so from now on i'll just figure in that 9% difference when i log the humidity readings i take daily.

[kitedemon]

Should work the very best temp would be 30ºC it has only 0.2∞ variation but ther whole thing is still with in 1% at most temps. It sounds like yours is fairly good much better than mine ever was. I check mine every 6 months because I am OCD and a spaz. Normal people would likely be fine with yearly checks.