| T O P I C R E V I E W |
| shell |
Posted - 06/29/2023 : 00:17:26
Hello!
My idea: is there way to change information on the map from CPM into uSv/h? CPM is "device depended" - in the same condition it depends of the device, tube, sensitivity etc. uSv/h are more convinient to use and more science-valued than raw CPM.
Regards! |
| 2 L A T E S T R E P L I E S (Newest First) |
| shell |
Posted - 06/29/2023 : 05:16:58
OK, thanks for answer!
But anyway, µSv/h gives kind of information about radiation level, which is converted from lamp pulses. Different lamps has different sensitivity, but using conversion formulas it returns less or more comparable values. And CPM never will be comparable :-) |
| ullix |
Posted - 06/29/2023 : 03:58:09
You introduced yourself as a newcomer, and obviously were able to immediately see the flaw in this construct: when you post data from different devices, or different tubes, any "CPM" (or "CPS") is inadequate for comparison; only µSv/h will do!
But then there is another catch: the conversion from CPM to µSv/h is valid ONLYfor a gamma source, and only one which is close to the source, by which the device had been calibrated for.
Now, as the GMC counters have never been calibrated, you are free to do whatever you like ;-))
Measuring background may pass as an acceptable spectrum pattern to the spectrum used for calibration, but if any source has a strong beta component, any report in units of µSv/h is invalid, as this has never even been claimed to be used for calibration!
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