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Posted by Mike E. Fullerton on October 31, 2006, 1:37 pm
On Mon, 30 Oct 2006 20:27:38 -0500, Jeff Wisnia
>Mike E. Fullerton wrote:
>>
>>
>>>
>>>>I am trying to install a SunTouch spot warming mat. To check for
>>>>damage you need to test the resistance of the wires using a digital
>>>>ohm meter. Trouble is I have no idea what to set the meter at. If the
>>>>Reistance Range of the mat is 70-86 what setting would I use on the
>>>>meter? The meter is a Sperry DM-350A if that matters.
>>>>
>>>>Thanks in advance.
>>>
>>>200 OHM scale.
>>
>>
>> Setting it to 200 on the OHM section always says 1__. no matter which
>> wire combination I touch the leads with.
>
>The leads plug into the "common" and "ohms (omega symbol) meter jack holes.
>
>Sounds like you've got a wide open mat.
>
>Tell us, if you touch the two meter leads to each other, do you get a
>reading of (or near) zero? If you do, the meter and leads are OK and you
>need a new mat.
Touching the two leads together I get a reading of 00.2 sometimes
00.1. Not sure if this is considered near zero. When I touch the leads
to the White/Black wires I get oscillating values between 78 and 80
which is withing the range of 70-86. White/Green and Black/Green wires
give 1__. Hopefully that means "infinite" ohms (no continuity) and
that would mean my mat is fine. Switching the leads in the terminals
gives the same readings.
_______
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