I need of a Geiger counter to do radiation measurements of x-ray
equipment, cabinets, etc. Since these are numbers going into FDA
reports the counter has to be calibrated and meet all requirements for
the US. Something like a Bicron Surveyor would work quite well. I
would like to get a digital unit that could be used for long term
measurement (downloadable to a computer), though. So the requirements
a

1) Constant real-time measurement, i.e. not just one measurement for
one button click plus quick response time.
2) Beeper that beeps quicker and/or louder depending on the mR/h
measured.
3) Digital read-out for long term measurement.

There are two units I have seen:

1) http://www.gammascout.com/
2) http://www.imagesco.com/geiger/digit...r-counter.html

Any input is highly appreciated.