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Thread: Dry Cabinet Temperature

  1. #1

    Default Dry Cabinet Temperature

    Hi, would like to find out whether the surrounding temperature will affect the humidity?
    I placed my dry cabinet in my bedroom, day time temperature a bit high (~31C), but in the night around 23C due to air-cond on. My cabinet currently running at around 50%.

    Thanks in advance.

  2. #2

    Default Re: Dry Cabinet Temperature

    shouldnt be a problem. maybe can off the power at night since you have the air-con on.

  3. #3

    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by shunzi View Post
    shouldnt be a problem. maybe can off the power at night since you have the air-con on.
    Thx a lot bro, i will leave it on all the time, affraid if 1 fine day forgot to turn it on, my gear will die leh....

  4. #4

    Default Re: Dry Cabinet Temperature

    i rmb someone post something like this: a photo a day keep the fungus away

    use your gear often and fungus wont have the chance to grow on the lens, even if u leave it outside the cabinet..

  5. #5
    Senior Member zac08's Avatar
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    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by Submarine71 View Post
    Hi, would like to find out whether the surrounding temperature will affect the humidity?
    I placed my dry cabinet in my bedroom, day time temperature a bit high (~31C), but in the night around 23C due to air-cond on. My cabinet currently running at around 50%.

    Thanks in advance.
    No issues... at all...
    Michael Lim
    My Flickr Site

  6. #6
    Senior Member Big Kahuna's Avatar
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    Default Re: Dry Cabinet Temperature

    I have the same environment as you. You should left the device run all the time, it will stop dehumidifying once it reach the 50% setting that you set and it will kick in if the moist goes higher, that's how it keeps gears dry consistently.....Also, as it's air tight, the temperature changes in the room will not affect it's performance unless you frequently sleepwalking at night to open the cabinet

  7. #7

    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by Submarine71 View Post
    Hi, would like to find out whether the surrounding temperature will affect the humidity?
    I placed my dry cabinet in my bedroom, day time temperature a bit high (~31C), but in the night around 23C due to air-cond on. My cabinet currently running at around 50%.

    Thanks in advance.
    as the temperature drops (if it drops that fast in the dry cabinet) the relative humidity (RH) increases, which makes the cabinet work harder, but once the temperature increases again during the day the RH drops further hence the dry cabinet does not need to work at all... so if at all you should turn off the cabinet during the day and not at night.

    at 31deg and 50% RH you have about 15g of water per kg of air, that amount of water at 23deg is probably a RH of 80% or so... so now your cabinet works hard to bring the RH down to 50% which is less than 10g of water... and the next day when it warms up these 10g water at 31deg will be a RH of much less than 50%
    Never forget rule 5
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  8. #8

    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by Big Kahuna View Post
    .......unless you frequently sleepwalking at night to open the cabinet
    Haha, if that's the case, i should have taken some great pic, coz i can only take great pic in my dream, for now...

  9. #9

    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by Michael View Post
    as the temperature drops (if it drops that fast in the dry cabinet) the relative humidity (RH) increases, which makes the cabinet work harder, but once the temperature increases again during the day the RH drops further hence the dry cabinet does not need to work at all... so if at all you should turn off the cabinet during the day and not at night.

    at 31deg and 50% RH you have about 15g of water per kg of air, that amount of water at 23deg is probably a RH of 80% or so... so now your cabinet works hard to bring the RH down to 50% which is less than 10g of water... and the next day when it warms up these 10g water at 31deg will be a RH of much less than 50%
    Wow, sounds complicated to me, anyway, will let the cabinet work as hard as me, so that can test out 5 years warranty is really worth the money. Thanks for your info anyway.

  10. #10

    Default Re: Dry Cabinet Temperature

    Quote Originally Posted by Michael View Post
    as the temperature drops (if it drops that fast in the dry cabinet) the relative humidity (RH) increases, which makes the cabinet work harder, but once the temperature increases again during the day the RH drops further hence the dry cabinet does not need to work at all... so if at all you should turn off the cabinet during the day and not at night.

    at 31deg and 50% RH you have about 15g of water per kg of air, that amount of water at 23deg is probably a RH of 80% or so... so now your cabinet works hard to bring the RH down to 50% which is less than 10g of water... and the next day when it warms up these 10g water at 31deg will be a RH of much less than 50%
    Great answer.

    Yep, temp affects the ability of the "air" to hold water.

    Not too sure about the saying of a photo a day keeps the fungus away though cos in my line, constant exposure leads to hazing (Another term for organic/inorganic crystallisation which roughly translates to fungus on lenses) on the lens systems used in wafer fabs' lithography section. Those lenses are kept at 1 part per billion H2O..... But, it'd be silly to keep your camera constantly in the dry cab for fear of fungus cos the purpose really is to snap photos ! So perhaps many photos everyday is in order ! Haaha.....

    I guess the only reason why I don't crank up my dry cabinet to like 10% RH setting is the fear of having the plastic parts dehumidify excessively and crack or embrittle.

    Cheers guys. Keep your stuff safe whichever way !
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