I watched the short movie. I can see the procedure you are using.
Are you connected directly to the terminals on the meter with the meter
disconnected from the rest of the instrument? I am sorry if this seems
obvious but with something this puzzling you must check everything. I
can't help but think the problem is not the meter movement. If you are
sure of the full scale current then it could be the meter but I strongly
suggest taking the meter out of the case and looking to see if there is
a shunt inside. If there is it may be bad although I would expect the
value to go up rather than down. If you intend to replace the meter
anyway you can do no harm this way. Now, another thing to look at. I
assume you have looked at the zero reading. If not make sure the pointer
is zeroed. Adjust the zero screw to make sure. Sometimes the stop at
the zero end is right at zero so if the zero adjustment can't bring the
pointer below zero and it looks correct. Bring it above zero a little
and then back. Somehow I really do not want you to give up on this thing.
On 4/16/2016 6:36 PM, christopherlarwood@gmail.com [Amateur-repairs] wrote:
> I really appreciate all the comments and help. I've forked out nearly $300 on the meter, elements and peak kit and postage to Australia, so not going to give up on it without having a good crack at it. The meter in question is a Dielectric 1000A - the Coaxial Dynamics 81000A looks to be the same instrument but they all are thruline type meters as is the Bird 43.
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> But it has a rectangular meter and a bird meter wont fit.
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> I have tested 3 different elements in the meter. 2 x HF which both read low in my meter but correctly in another Bird meter. Satisfied with the HF elements, haven't compared the VHF one.
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>
> Here is the clip showing the FSD test - a variable bench power supply is on my buy list. Funny how everytime I put something on my fix list, this invariably means adding several items to my need to buy list!
> Wattmeter FSD test https://www.youtube.com/watch?v=S1Ew8wQwSI4
>
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> https://www.youtube.com/watch?v=S1Ew8wQwSI4
>
> Wattmeter FSD test https://www.youtube.com/watch?v=S1Ew8wQwSI4 Using simple test method, I check the FSD current of my wattmeter. It is rated as 30 uA. My test shows 30.3 uA were required for FSD Just under 40 uA was...
>
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> View on www.youtube.com https://www.youtube.com/watch?v=S1Ew8wQwSI4
> Preview by Yahoo
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> [Non-text portions of this message have been removed]
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> ------------------------------------
> Posted by: christopherlarwood@gmail.com
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>
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--
Richard Knoppow
1oldlens1@ix.netcom.com
WB6KBL
[Non-text portions of this message have been removed]
Posted by: Richard Knoppow <1oldlens1@ix.netcom.com>
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