Olympus BIX III, Руководство пользователя

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10-015490-01EN, Rev. 2, June 2020
Safety Information 33
2.3 Radiation Dose Measurements
Radiation dose measurements were made to document any possible ionizing
radiation dose to a typical operator of the BTX III XRD analyzer. The measurements
were made using a calibrated Ludlum Model 9-3 Radiation Ion Chamber. This
chamber is capable of measuring low energy X-ray fields to within plus or minus 20 %
of true value above 10 keV, with a typical counting range of 0 µC/kg to 51.6 µC/kg .
During testing, the BTX III analyzer was operated at X-ray tube conditions that are
standard for all testing materials (30 kV, 330 µA). Radiation dose measurements were
made at specific locations at the base, back, front, and sides of the system.
Radiation dose measurements around the perimeter of the system, at a distance of less
than 2 cm, yielded no measurable radiation levels (less than 0.2 mR/h). This level is
well within acceptable levels of exposure to the general public. When properly set up
and operated, there is no exposure in excess of the typical dosage to the general public
of naturally occurring sources of ionizing radiation.
Figure 2-3 on page 34 shows the radiation dose measurement points. The radiation
levels measured at these points are reported in Table 7 on page 34. All measurements
were made at a maximum power setting of 30 kV, 330 µA.
Table 6 LED behavior
Case High voltage X-ray LED 1 (red) LED 2 (amber)
1 On On On Off
2 Off Off LED FAIL (Off) Off
3 Off Off Off Off
4
a
a. A current drop during a measurement can be related to a filament failure. In such a case, please
contact the Olympus After-Sales Service. If the filament fails, the X-ray automatically turns off
while the high voltage remains active. The X-ray tube is specifically designed to withstand such
a breakdown and the electrical safety is maintained.
On FILAMENT FAILURE
(Off)
On Off
5 Off INTERLOCKS OPEN
(Off)
Off On