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How to Test a Heating Element

YYD

who can give me some advices?!

  • 0

    1\ assuming that a visual inspection of the element has been done or isnot possible

    2\first we need to know what the resistance of the element should be this can calculated using known values

    3\R=(V*V)/P[where V is the voltage powering the element,P is the power the element uses and Ris the resistance.]

    4\nwo we know what resistance we are looking for we can check the element

    5\set the multimeter to the resistance setting with an appropriate measuring scale selected.

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    6\with the power off ,Unplugged or by other means disconnected form the mains

    7\if the reading is the same or very close to that of the calculated value then the element is OK and the fault lies elsewhere

    8\if the reading is a lot higher than the calculated value the emelment is failing and wont be heating fully

    9\if the reading is a lot lower than the calculated value the element is failing and will be heating to much or not at all if part of the element has exploded.

  • 0

    A clamp type of ammeter is useful, if you can apply one, as a drop in the rated power usually indicates a hot spot and a likely failure in the near future. Very useful for flow solder baths with two sets of elements, if one has already failed and not been noticed, the second one going creates a very large lump of solder with dead elements inside to trya and change.