All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  steps for testing/detecting radiation on GMC-200

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by ZLM[/i] [br]Here are the steps for testing/detecting radiation on a particular item: Remove your test item from GNMC-200, wait for at least one 1-3 minutes after software started. When you see a CPM around 10-20, then that is the background radiation noise. If you see the Total: 0, means the software not start to count yet. The total is not important, the important value is CPM. Not the mR/h, uSv/h. Both mR/h and uSv/h are calculated from CPM. Once you have some relatively stable reading of your background CPM, then place your test item beside the GMC-200 top edge, where the Geiger Counter tube installed. Check if the CPM changes after at least 1 minute. If no change, then the testing source has no radiation. If the CPM goes higher, the source has radiation. [/quote]    Insert an Image File Check here to include your profile signature.