Dry box hydrometer reading


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ChongK

Senior Member
Nov 15, 2007
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#1
Hi all,


i would like to know if the hydrometer reading goes below 45%,lets say around 20%.

will there be any damages done to the lense?:dunno:
 

adiknaim

New Member
Feb 9, 2008
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Choa Chu Kang
#2
if its 20%, its too dry, and if im not wrong, the lubricants might get dried up (focus/zoom ring)...
 

Jan 12, 2007
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Woodlands
#3
45% - 50% is the recommended humidity level for cameras and lenses.. below that will cause drying out of lubricants in your lenses... but of course it will happen gradually....

and i dont think dry box can go lower than 20%... i used to have one, my lowest was 55%...
:bsmilie: :bsmilie: :bsmilie:
 

ChongK

Senior Member
Nov 15, 2007
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#4
ok thanks for the replies all!

however,my dry box was at 18% the last time ;p

but after opening and closing a few times,it went up to 30%..haha
 

ChongK

Senior Member
Nov 15, 2007
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#6
By taking out some of the celica gel beads?

haha okay thanks for the advice.. :D
 

Mar 13, 2005
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Hobbitshire
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#9
depends on whether you left the silica beads in the container or spread them out... And to be honest, there's no need for silica beads in a dry-box - you'll only need silica beads when you've got a normal container with no dehumidifying function. ;) And after some time, they stop functioning as well (when they change colour). =)
 

ChongK

Senior Member
Nov 15, 2007
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#10
oh i see..

But from what i noe the hydrometer does not go down if u dont have any seilica beads in the box.

Mine is both spreaded out and in the container..haha :sweatsm:
 

Mar 13, 2005
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Hobbitshire
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#11
oh i see..

But from what i noe the hydrometer does not go down if u dont have any seilica beads in the box.

Mine is both spreaded out and in the container..haha :sweatsm:
hey Chong, when you it doesn't go down, what was the reading at? it takes up to 12 hours sometimes especially when u start using it before it responds (since the stuff you put in could have lots of moisture on their surface for example).

hope that helps!
 

artyboy

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Jul 26, 2003
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#12
i have an old Toshiba electronic drybox which runs below 30, prob is that i can't find any switch/levers to adjust (maybe don't have) and i've lost the manual. as someone mentioned, i also resort to opening/closing the door once in a while to let the gauge go up higher than 30 :D
 

Mar 15, 2008
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Singapore
#14
Hi all,

I did not know that at 20%, the lubricants in the lens will dry up. Learnt something new today. :)
I have already tune my Value dry cabinet to mid-range rate of drying, but the meter still goes down to 20% overnight (no sliica beads in cabinet). Hmmmm...think I better set the meter to low rate of drying.

Thanks guys! Lucky I bumped into this thread.
Rgds,
 

ChongK

Senior Member
Nov 15, 2007
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#15
okay thanks all for the helpful information..

now my dry box is at around 35% after opening and closing for a couple of time..

thanks :D
 

JavaBeanz

New Member
Jul 11, 2006
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#16
I think it is good to invest in a electric powered dry box instead of silica gel to protect your precious equipment ;)
 

Feb 3, 2008
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#17
mine's electronic.

lowest was 22%.

had some silica gel insides well.

didnt abt the lubricants drying up.

Will re-adjust.

;p
 

#18
hmm my dry box can never go below 45% and once it open it will shoot up to 55% and it will takes about 1 night to go back down to 48%, to get 45% i cannot open the box for a least 3 days. Never know that it can do below 20%.
 

ChongK

Senior Member
Nov 15, 2007
511
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16
West Side
#19
haha then i guess its the celica gel beads that are making that happen..
u could try to reheat them in the microwave to let them absorb more moisture..:D
 

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