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digital thermometer - cheap small fast wide range?

Discussion in 'General Electronics' started by wle, Mar 2, 2005.

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  1. wle

    wle Guest

    is there such a thing as
    a digital thermometer - that is cheap small fast and wide range?

    what would be perfect is a regular medical type -
    if it would ONLY read from 0F to 200F.

    is there such a thing?


    < $20

    long form factor : up to ball-point pen size,
    or short form factor: diameter of a quarter, 3/8 thick

    +/- 2F

    -40F to 300F nice
    0F to 140F necessary

    reads air temp within 10 sec
    this is the least important spec, it can take up to 60 sec
    if everything else is within specs.

    also i would like it to be on all the time, not have to press
    a button.

    battery life should be one year or more.

  2. Robert Baer

    Robert Baer Guest

    National semiconductor makes ICs, one calibrated in Centigrade, one
    in Farenheit; both are capable of erpeatable and accurate measurements
    to 185C.
  3. I don't know if it meets all your specs but have you considered an electronic
    cooking/meat thermometer from your local grocery store? The one I have reads
    from -45C to +200C, cost about $15 and has a 4.5" stainless steel probe. The
    trademark is Good Cook.

    Hope this helps.
  4. wle

    wle Guest

    oh yeah!

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