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Calibrating a Sencor ??

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Mark2727

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Joined 2009
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I have a Sencor TC-109 tube checker.

I'd like some help calibrating it. There appears to be a means to adjust this under the top plate. There's a tube there "under the hood" and a screw so I'd assume you get a VOM and make an adjustment to the Sencor to have it accurate.

I realize that on top there's a "CAL" setting and you turn a screw there to zero out the needle. I know how to do that.

Thank you guys,
Mark
 
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