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Subject: Re: Humidity sensor design

Date: 10/13/02 at 4:08 PM
Posted by: Brian Snell
E-mail: bsnell@lara.on.ca
Message Posted:

In Reply to: Humidity sensor design posted by fauzy on 10/11/02 at 6:12 AM:

Greetings.

Philips make a Humidity Sensor, P/No 691-90001, which you may be able to find through a Philips distributor in your area. My data book does not include this device, as it comes under an industrial OEM classification. Application notes should also be available through Philip's Website.
Be aware that it may be difficult, and expensive, to obtain this item in small quantities, as Philips usually markets this type of product against forward-orders for production-quantities -- with lead times being rather long.
I have seen this item used in consumer Humidity Indicators sold for domestic and Executive Desk accessories. I recall that the retail prices of these items was not excessive, considering that the package was extremely neat and featured an LCD display. I would have to be very enthusiastic to want to build such a device when considering the economies of scale enjoyed by the manufacturer.
However, Good Luck.

B.S.


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