Extech AC/DC Clamp Meter Offset

Not just extraneous pickup from building wiring maybe ? Probably not, but just a thought ...

Arfa

The op should be lucky its down that low on AC.

I have an extech my self (different model), that seems to have a undocumented feature that appears to calibrate the AC mode of the clamp when I hold down one of the buttons for like 4 secs or more.

This is a pretty basic model, no buttons, only 3 slide switches.

And to Arfa's question, no not stray fields. :)

Thanks!

-- sam | Sci.Electronics.Repair FAQ:

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But looking at the spec of that one, it's +/- 1.2%FS

Don't know if this is relevant but my original Amp Clamp will have an offset if the two ends that clamp together aren't perfectly clean.

If it were the clamp-on DC range, it would be good. But the AC clamp-on is just a transformer secondary. It SHOULD read 0 with nothing there! :)

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If it were just a plain winding that might be so. But it has to open to allow fitting round a cable.

Same offest open or closed. This meter is in mint condition, no visible damage anywhere.

-- sam | Sci.Electronics.Repair FAQ:

Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.