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 2.GQ Geiger Muller Counter
 GMC-320 and sun
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jjfr

France
2 Posts

Posted - 03/08/2014 :  01:54:00  Show Profile  Reply with Quote
Hello,

We buy near end december 3 GMC-320. Just to see the result I remove the cover and let CG under the sun (not really violent in this season in France). 2 CG don't move (20/25CPM) but the third give 600CPM and go back to normal few minutes after. Without this solar exposition this last CG give coherent values with the others.

Did you have and idea of the problem ? How can I solve it ?

Thanks.

JJ
Reply #1

ZLM

1261 Posts

Posted - 03/08/2014 :  15:01:58  Show Profile  Reply with Quote
This is tube related.
However, the GMC-320 is designed to work correctly with the cover, not direct sunlight on the tube.
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Reply #2

jjfr

France
2 Posts

Posted - 03/10/2014 :  06:38:14  Show Profile  Reply with Quote
Hi,
What do you mean by "tube related" ? the tube is dead ?

JJ
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Reply #3

ZLM

1261 Posts

Posted - 03/11/2014 :  22:09:11  Show Profile  Reply with Quote
"tube related" means this problem is caused by direct sunlight on the tube. Sorry, it is my own term. :)
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