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 Station ID 1:B05A1FCB.3 Redding, CA, US 
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Joined: Tue Dec 02, 2014 12:13 pm
Posts: 23
Restarted the Redding, CA monitoring station formerly ID 1:54503030.3 which had an issue with cross-linked data with another station with the same ID.

Using a GQ200 Geiger counter which is mounted indoors about 2' from an outside wall and is monitoring the outside air through a 1/2" diameter duct and low velocity 1" fan attached to a clear plastic outer case/shroud that encloses the Geiger counter.


Mon Jan 12, 2015 6:01 pm
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Joined: Mon Jan 28, 2013 7:40 pm
Posts: 2879
Location: Illinois
Have you considered using a filter to suck the air through? This would trap radiation and allow for easier detection of rises.

_________________
MY OUTSIDE RADIATION MONITORING STATION:
South Beloit, Illinois - GMC200 Outside on HEPA air purifier, ground level, facing West.
http://netc.com/chart/view.php?n=1%3AEB5A139C


Thu Jan 15, 2015 12:45 pm
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Hi KC, I am currently using Ionic Breeze type filters, 4 in my repair shop and 3 in the living room. They are cleaned once per week using a damp paper towel. After cleaning I expose them to my Radalert Inspector and almost always the response is at least double the normal background of 15 CPM. Is there a type of filter that you would recommend? Please see the attached photo of my counter which sits on my desk right in back of my workstation monitor. I have the cover removed in order to catch any alpha emitters that come down the pipe.


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Thu Jan 15, 2015 3:54 pm
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Location: Illinois
Your filters might work great, I use HEPA filters. As for leaving your cover off to detect alpha radiation, the GMC-200 does not detect alpha. The great thing about the radiation we will likely detect will be all types alpha, beta & gamma.

_________________
MY OUTSIDE RADIATION MONITORING STATION:
South Beloit, Illinois - GMC200 Outside on HEPA air purifier, ground level, facing West.
http://netc.com/chart/view.php?n=1%3AEB5A139C


Fri Jan 16, 2015 12:08 pm
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