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 Analogue meter
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 Return to top of page · Post #: 1 · Written at 4:01:07 PM on 7 July 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 645

Hi all if anyone has a 120 mm x 100 mm meter with 0.5 Ma fsd. and a resistance of 100 ohms I would be interested in buying it or swapping it for a valve or two. The meter in my University valve tester is crook.
Regards Jimb.


 
 Return to top of page · Post #: 2 · Written at 7:34:20 PM on 12 July 2020.
Kakadumh's Gravatar
 Location: Darlington, WA
 Member since 30 March 2016
 Member #: 1897
 Postcount: 151

Jimb,

I have a collection of various meters I have salvaged from gear being tossed out and have one exactly that size but it is NOT 100 ohm coil value...more like around 10 ohms or less.
It is a Master Instruments voltmeter from an ex PMG test rack and has 3 terminals on the rear wired to two multipliers inside giving an 8V FSD and 80V FSD range on either terminal and the Common terminal.

If you would like I can photograph it and submit to Brad...with a bit of luck you might be able to adapt it OR maybe you can find a remaining Instrument fitter who still has the skills to fix em... Have a really a good one here in WA I have used many times and he is based in Welshpool just near Perth airport. His name is Les Cook Instruments contact on 08 93621266.

Lindsay


 
 Return to top of page · Post #: 3 · Written at 8:04:19 PM on 12 July 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 645

Thanks for your offer Lindsay, however I do not think I could adapt it, but Inappreciate your offer.


 
 Return to top of page · Post #: 4 · Written at 5:23:17 PM on 13 July 2020.
Kakadumh's Gravatar
 Location: Darlington, WA
 Member since 30 March 2016
 Member #: 1897
 Postcount: 151

Jimb,

Actually the meter resistance is 200 ohms and NOT 10 as I initially said... Thought it was tad low and double checked with a better quality Ohmmeter... looks like my analogue meter is telling fibs on one range..back to Less Cook I think with that one.

Lindsay


 
 Return to top of page · Post #: 5 · Written at 8:56:19 PM on 13 July 2020.
Jimb's Gravatar
 Location: Kanahooka, NSW
 Member since 18 November 2016
 Member #: 2012
 Postcount: 645

Hi Lindsay.
I dought if I can adapt it. It needs to have an FSD of 500 micro amps ( 0.5 Ma ) most are 1 Ma FSD.
thanks anyway.


 
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