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 2.GQ Geiger Muller Counter
 Sensitivity of GMC-320 Plus
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uladz

USA
2 Posts

Posted - 03/08/2019 :  17:26:13  Show Profile  Reply with Quote
Seems like I can not find any reference to sensitivity of GMC-320 Plus. What's the resolution in terms of CPM per 1 uSv/h or 1 mR/h? And how it is calibrated at factory? I've seen the sticky thread about calibration of this device, looks like out of the box with the factory tube it gets something around 150 CPM per 1 uSv/h, am I correct? Thank you!
Reply #1

EmfDev

644 Posts

Posted - 03/08/2019 :  19:26:05  Show Profile  Reply with Quote
Hi ulads, you can see the calibration value under Init Settings in the menu. I think it's 0.0065 uSv/h per CPM so its's about 153.846153846 CPM per uSv/h. You can also modify this value if you want to.
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Reply #2

uladz

USA
2 Posts

Posted - 03/08/2019 :  22:40:11  Show Profile  Reply with Quote
Okay, that's close to what I was thinking, i.e ~1540 cpm ver 1 mR/hr. Thanks!
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