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  1. #1
    Join Date
    Sep 2007
    Location
    Victoria BC, Canada
    Posts
    12

    Chlorine resistant humidity transducer.

    Hi all,

    I have had some problem finding a humidity tranducer that will stand up to the environment in a return air duct from a swimming pool. The standard "off the shelf" sensors only last a few months. I tried a Johnson HT-6703-0N00P that did last close to 2 years but it has now failed. Has anyone tried any others that seem to tolerate chlorine?

    Thanks

  2. #2
    Join Date
    Oct 2003
    Location
    Michigan
    Posts
    738
    I have had good luck with these from KELE.
    Beware of the prophet trying to make a profit.

    There is less oxygen from knee level to the floor! Check it out next time you tie your boots.

  3. #3
    Join Date
    Mar 2007
    Posts
    9
    Maybe your real issue is in the akalinity of the pool.............if your ph level is to low in the pool it can cause errosion and corrosion of metal. A chelating agent is what is used to metals such as copper in a pool for a HX ...........but im unsure if a RH% sensor have that good luck

  4. #4
    Join Date
    Jan 2003
    Location
    USA
    Posts
    1,763
    Pools will eat humidity sensors up eventually. I like the Veris and Kele units with replaceable tips. The tips are very cheap, and a simple install. Give the customer a handful and he will be set for a long time.

  5. #5
    Join Date
    Sep 2007
    Location
    Michigan
    Posts
    290
    Quote Originally Posted by eriks1954 View Post
    Hi all,

    I have had some problem finding a humidity tranducer that will stand up to the environment in a return air duct from a swimming pool. The standard "off the shelf" sensors only last a few months. I tried a Johnson HT-6703-0N00P that did last close to 2 years but it has now failed. Has anyone tried any others that seem to tolerate chlorine?

    Thanks
    3 years on JCI parts, send it back for a replacment
    "Yeah I can figure out whats wrong with it, but you were here first and there isn't room for two, plus it's cold up here, I'll be in the van"

  6. #6
    Join Date
    Nov 2007
    Posts
    388
    I would go to an industrial grade transmitter. Vaisala is one of the best transmitters http://www.vaisala.com. I know they make corrosion resistant ones.

  7. #7
    Join Date
    Aug 2006
    Location
    UK
    Posts
    336
    I would second Vaisala. Certainly worth the money.
    gnomethang
    _______________________________________________
    "Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them."
    - The Reverend Mother Gaius Helen Mohiam

  8. #8
    Join Date
    Sep 2007
    Location
    Victoria BC, Canada
    Posts
    12

    Thanks to all that replied.

    I will do some research on these products and go from there.

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