New temp probe for multimeter

Discussion in 'General Electronics Chat' started by electronis whiz, Feb 8, 2015.

  1. electronis whiz

    Thread Starter Well-Known Member

    Jul 29, 2010
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    A friend gave me an old amprobe AM-1A analog multimeter. It has a temperature function which is shared with one of the DC MA ranges. It plugs in with what looks like a normal size earphone jack. I have not seen any probes like that. I thought i'd make my own with an old thermister and an old earphone cord and solder it up. I tried a temp setup, which did nothing.

    Based on it shares a MA range i'm wondering if maybe those probes are thermocouple based rather than using thermistors. Any ideas? I have an IR thermometer already, but think this could be better in some cases.
     
  2. Lundwall_Paul

    Member

    Oct 18, 2011
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    Perhaps Amprobe could tell you something.
     
  3. paulktreg

    Distinguished Member

    Jun 2, 2008
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    Could possibly use a Type K thermocouple?
     
  4. Lundwall_Paul

    Member

    Oct 18, 2011
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    I do see the AM-1A on Ebay not sure what they come with.
     
  5. Lundwall_Paul

    Member

    Oct 18, 2011
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  6. Denesius

    Member

    Feb 5, 2014
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    Why the milliamp scale? I would think it would display on the milli-volt scale, since they put out voltage based on junction temperature?
     
  7. electronis whiz

    Thread Starter Well-Known Member

    Jul 29, 2010
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    I looked around on google and amprobe for any info on this. I find some selling them, or using them, but no manuals or anything. Seems maybe it was discontinued by amprobe.

    I searched that probe model, plug looks right so would probably work. I'm not sure if because it fits it is the intended one though. because I always thought these were model specific things due to range, calibration, etc. I've not dealt with this before so very possible i'm wrong there.
     
  8. electronis whiz

    Thread Starter Well-Known Member

    Jul 29, 2010
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    Ok my mistake it's not MA its MV. shares the 60MV range.
     
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