A hand-held XRF analyzer including an x-ray source for emitting x-rays through a window to a sample. A detector behind the window is responsive to x-rays irradiated by the sample. A controlled volume about the x-ray source and the detector is maintained in a vacuum or a predetermined purge condition for a predetermined amount of time for increasing the sensitivity of the analyzer. A processor is responsive to the detector for analyzing the spectrum of irradiated x-rays and responsive to a pressure sensor for detecting a pressure change inside the controlled volume. The processor is configured to detect if the vacuum or the predetermined purge condition has been compromised.
申请公布号
US8064570(B2)
申请公布日期
2011.11.22
申请号
US20060642808
申请日期
2006.12.20
申请人
TANNIAN BRIDGET;HUBBARD-NELSON BRAD;OLERU ALFRED;INNOV-X-SYSTEMS, INC.