conversion
9 months 3 weeks ago #6850
by hong
conversion was created by hong
How to inquire about the conversion factors for different models of Geiger counters?
Please Log in or Create an account to join the conversation.
9 months 3 weeks ago - 9 months 3 weeks ago #6851
by Simomax
Replied by Simomax on topic conversion
The conversion factors are relevant to the type to Geiger Muller tube used, not the actual counter. I thought there was a list on this forum somewhere, but can't find it. I may be mistaken.
Generally in the past I have simply searched the internet and looked at various pages stating conversion factors for different tubes. It should be noted that the conversion factor for a specific tube will be different dependant on the radio isotope source, so to get a general conversion factor to cover a range of radio isotopes we generally look at both extremes (high and low) and use an average. For instance the conversion factor an SBM-20 tube would be different for Cs-137 (Caesium 137) and Co-60 (Cobalt 60), so we look at the highest number and the lowest number and take an average.
Below is a list I have been collating for some time now.
Generally in the past I have simply searched the internet and looked at various pages stating conversion factors for different tubes. It should be noted that the conversion factor for a specific tube will be different dependant on the radio isotope source, so to get a general conversion factor to cover a range of radio isotopes we generally look at both extremes (high and low) and use an average. For instance the conversion factor an SBM-20 tube would be different for Cs-137 (Caesium 137) and Co-60 (Cobalt 60), so we look at the highest number and the lowest number and take an average.
Below is a list I have been collating for some time now.
RH = values from RH Geiger
SBM20 0.006315;
SBM20 0.0057; - RH
SI29BG 0.010000;
SI29BG 0.0082; - RH
SBM19 0.001500;
SBM19 0.0021; - RH
STS5 0.006666;
STS5 0.0057; - RH
SI22G 0.001714; = 583.43
SI3BG 0.631578;
SBM21 0.048000;
LND712 0.005940;
SBT9 0.010900;
SBT9 0.0117; - RH
SI1G 0.006000;
SBM-20 - conversion factor 220 CPM -> 1uSv/h (working voltage- 400V)
SI22G - conversion factor 792 CPM -> 1uSv/h (working voltage- 400V)
SBT-9 - conversion factor 150 CPM -> 1uSv/h (working voltage- 400V)
SI-29BG - conversion factor 122 or 112 CPM -> 1uSv/h (depending on batch) (400V)
SBT11 - conversion factor 250 or 318 CPM -> 1uSv/h (depending on batch) (390V)
SBT11A - conversion factor 250 or 318 CPM -> 1uSv/h (depending on batch)(390V)
SBT10 - conversion factor 1250 CPM -> 1uSv/h (380V)
SBT10A - conversion factor 1250 CPM -> 1uSv/h (380V)
SI8B - conversion factor 1250 CPM -> 1uSv/h (380V)
M4011 = 153.8? = 0.0065
J305b = 0.00812037037037
Last edit: 9 months 3 weeks ago by Simomax.
Please Log in or Create an account to join the conversation.
9 months 3 weeks ago #6852
by hong
Replied by hong on topic conversion
Thank you very much for your reply
Please Log in or Create an account to join the conversation.
9 months 3 weeks ago #6853
by Simomax
Replied by Simomax on topic conversion
Most welcome, and welcome to radmon.org!
Please Log in or Create an account to join the conversation.
Moderators: Gamma-Man
Time to create page: 0.152 seconds