| FHT 770 GR is an automatic sample changer for
samples up to 200 mm diameter. Alpha/beta radioactivity in samples is measured with large
area proportional counters. It is especially useful for the automatic, unattended
evaluation of radioactivity on filters from aerosol samplers or dried water samples on 200
mm planchets.
Due to the very low alpha background of proportional detectors extremely low detection
limits for alpha emitters, such as e.g. Plutonium or Uranium, are obtained.
Using ABPD evaluation techniques artificial alpha/beta radioactivity can be effectively
discriminated against natural Radon/Thoron progeny.
For low level beta measurement an optional 50 mm lead shielding is available.
As measuring instrument a FHT 8000 with embedded PC and special modules is used.
Comprehensive Windows software is available for measurements, reports, calibration and
functional test. |
