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Making a temperature sensor

Discussion in 'Sensors and Actuators' started by NateNewThread, Aug 12, 2013.

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  1. NateNewThread

    NateNewThread

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    Sep 17, 2012
    Hi All,

    I had a temperature sensor on a laboratory centrifuge fail on me and the manufacturer doesn't sell parts for the unit anymore because its a bit old. I DID however determine the manufacturer of the temp probe and ordered 2. I'm up to the task of soldering the new probe to the connector wires but what would I use to ensure that the leads don't brush against one another and short something. Do they sell really low ID shrink wrap or is there a putty I could use? Also, if I did use shrink wrap, wouldnt it be not advisable to use heat that close to the temperature sensor?
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  2. BobK

    BobK

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    Jan 5, 2010
    I don't see any problem using heat-shrink on it. The soldering temp is going to higher than that needed for the heat-shrink.

    Bob
     
  3. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,384
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    Jan 21, 2010
    You can get heatshrink tubing with an ID down to 1.5mm (and probably smaller).

    It starts shrinking at pretty low temperatures (soldering-wise) so make sure you push it at least a couple of cm along the wire away from where you're soldering.

    I use a hot air gun set to between 120C and 150C to shrink the tubing, but there are plenty of other things you can use.
     
  4. BobK

    BobK

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    Jan 5, 2010
    Yes, I use a match.

    Bob
     
  5. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    May 8, 2012
    A good hair dryer will work. Admittedly the one I use is over 30 years old.

    Chris
     
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