Hello Hann,
nice to hear from you.
Would like something to click on place, or put on like a stamp or fasten with any simple method on inside of an aluminium cabinet. Equipment size about half cub feet. Mast oriented, diff heights from some feet to hundreds of feet up. Global placement. Long exposure to >80RH should change this indicator so one could open the box regularly and see what happens on inside. Electronic indicators too expensive for placeing in hundreds of such boxes.
Cheers
Ingemar
-----Original Message-----
From: Hann Pang [mailto:[log in to unmask]]
Sent: den 30 maj 2001 16:48
To: [log in to unmask]
Subject: Re: [TN] Permanent Moisture Sensitivity Indicators?
Ingemar,
You mentioned an interest in an indicator that shows levels of humidity??
What sort of humidity levels are we talking about? what kind of
application? a diecut tape?
Hann
3M
Brian Ellis <[log in to unmask]> on 05/24/2001 08:09:24 AM
Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
to Brian Ellis <[log in to unmask]>
To: [log in to unmask]
cc: (bcc: Hann Pang/US-Corporate/3M/US)
Subject: Re: [TN] Permanent Moisture Sensitivity Indicators?
Bev
Would there be a commercial market for such indicators (say 1 M
units/year)? If so, would you want it to show a dunking in water (how
long reaction time at what temperature?) or exposure to high humidity
(what RH threshold at what temperature and reaction time?). I can
envisage several types of, say, 1210 pseudo-components with a colour
band which would change permanently (short of deliberate tampering).
They might not like aqueous cleaning though :-( Also, would you prefer
them to operate only in power-on conditions or at all times (service or
storage)?
Brian
Bev Christian wrote:
>
> TechNetters,
> Hann asked this same sort of question May 9th and I am not aware of any
> answers being posted. Certainly not with the same title (searched
> archives).
>
> Ever have clients dunk your hard work in water and then claim that you
> couldn't make good product? Do any of you know of any really small,
> moisture indicator strips that permanently changed color when they are
> dunked in liquid water, as opposed to just being exposed to high humidity
> for long periods of time? I know, I know a tall order. Any help would
be
> appreciated. Thanks.
>
> Bev Christian
> Research in Motion
>
>
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