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 2.GQ Geiger Muller Counter
 GMC 320 Plus V4 temperature below 0 Celsius
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GER_aki75

Germany
16 Posts

Posted - 02/05/2019 :  10:50:45  Show Profile  Reply with Quote
Hello,
I had some high CPM countings last days up to 273 CPM in front of my house (and up to 150 inside my house). The temperature was slightly below zero. The Geiger counter was in my jacket pocket, so I dont think it was below zero itself.
Is it possible that the high countings are affected by the low temperature ?

GMC 320 Plus V4 & GMC Geiger Counter Looger Pro V 5.56
Geigermap Location: 48.348745928343035,10.899212072585215

Edited by - GER_aki75 on 02/05/2019 10:56:41
Reply #1

EmfDev

855 Posts

Posted - 02/05/2019 :  11:01:32  Show Profile  Reply with Quote
Hi GET_aki75, is it always that high? have you check to other places that have similar temperature? It shouldn't be affected by it.
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Reply #2

GER_aki75

Germany
16 Posts

Posted - 02/05/2019 :  11:27:15  Show Profile  Reply with Quote
The average CPM in my house is about 35 to 45 CPM with peaks up to about 100 (sometimes 120) CPM.
I measured these high CPMs (up to 200-270 CPM) in front of my house three times now.
The countings inside of my house seem to increase lately from 35 to 45 and higher in average.
I will test it in other cold places to see if the temperature is a factor.

My Geigercounter on the geigermap gmcmap.com is in location 48.348745928343035,10.899212072585215 in Germany, Bavaria, Augsburg
The CPM countings there on the map are inside my house.

GMC 320 Plus V4 & GMC Geiger Counter Looger Pro V 5.56
Geigermap Location: 48.348745928343035,10.899212072585215

Edited by - GER_aki75 on 02/05/2019 11:42:28
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Reply #3

EmfDev

855 Posts

Posted - 02/05/2019 :  12:07:00  Show Profile  Reply with Quote
The counter is not guaranteed to work below 0 or above 40. There's a possibility that the low temperature could have affected the counter.
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Reply #4

GER_aki75

Germany
16 Posts

Posted - 02/05/2019 :  13:06:00  Show Profile  Reply with Quote
ok, thanks for the info

GMC 320 Plus V4 & GMC Geiger Counter Looger Pro V 5.56
Geigermap Location: 48.348745928343035,10.899212072585215
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