Fusor Forums

Bob Reite wrote:You can send it to a calibration lab that has the necessary source. It should not cost more than $200.00 plus shipping both ways. The calibration should be good for several years as long as the instrument is treated gently.

I find that the sodium iodide detector part of the Quantrad Ranger needs calibrating frequently, and daily testing. There's a backdoor manual way to do it with Cs-137 but you have to take the cover off to do it. I wrote that up maybe 10 years ago, it should still be on the web.

The He3 neutron detector is a good one and fairly sensitive, as the whole design was done at LANL and licensed out for manufacture to the private sector (no longer made or supported evidently).

The isotope identification program is superb and adjusts it's time factor depending on the strength of the signal, and statistical confidence levels. A typical check source can be identified in 10 seconds, as long as it is in the library.

Overall not as good detecting Gammas or Neutrons as the SAM 935, which can be used with standard software control.
Quantrad Ranger Plus info:
http://www.qsl.net/k0ff/01%20Manuals/Qu ... er%20Plus/

George Dowell wrote:I'll have to look it up, it's been maybe 10 years since my work with that.

Meantime do a gamma scan of Cs-137 and show me the screen. Specifically where does the 661.7 peak show up?

Thanks

richardmeek wrote:

George Dowell wrote:I'll have to look it up, it's been maybe 10 years since my work with that.

Meantime do a gamma scan of Cs-137 and show me the screen. Specifically where does the 661.7 peak show up?

Thanks