All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  GQ GMC-800 error bought on Amazon Belgium

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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 mikecbb18[/i] [br]The Geiger counter I bought from Amazon Belgium(received on 18,Dec,2025), a GQ GMC-800, shows a CPM to #956;sv/h ratio of 100 on its display, instead of around 154. For example, In the Dose Rate Options of the screen,0.14 #956;sv/h = 14 CPM. However, after connecting the Geiger counter to my computer via USB, the downloaded CSV file did not have this incorrect conversion relationship: Date Time Type uSv/h CPM 2025/12/9 11:04 Every Second 0.078 12 2025/12/9 11:05 Every Second 0.091 14 2025/12/9 11:06 Every Second 0.123 19 2025/12/9 11:07 Every Second 0.123 19 2025/12/9 11:08 Every Second 0.104 16 2025/12/9 11:09 Every Second 0.097 15 2025/12/9 11:10 Every Second 0.045 7 2025/12/18 4:30 Every Second 0.117 18 2025/12/18 4:31 Every Second 0.091 14 2025/12/18 4:32 Every Second 0.058 9 I then bought the same model from Amazon Belgium and found that it had the same problem. So, my question is: 1.In the European version of the GMC-800, is the relationship between CPM and uSv/h on the Geiger counter instrument display incorrect? Should I actually be looking at the data exported from the computer? 2. Or is it that the European version of the GMC-800 is not calibrated and therefore unusable? [/quote]    Insert an Image File Check here to include your profile signature.