S1 TI
TAN, T
RACER
5, and CTX
User Manual
030.0112.04.0
24 of 67
2.2. Radiation Profile – T
RACER
5
standa
rds
The radiation profile reflects the radiological conditions during normal and non-normal
instru
ment operational conditions.
To establish radiation profiles –
IEC 62495 (2011), Nuclear instrumentation – Portable X-ray fluorescence analysis
equipment utilizing a miniature X-ray tube was used as a guide.
The analyzer was set at three conditions established for normal analysis and two worst-
case conditions with and without a sample over the examination window. For eas
e in
viewing
, three of the settings are shown below.
Per the guide, measurement of stray radiation (leakage and scatter) was conducted at 1
0,
30, a
nd 100 centimeter distances from the surface, as well as at 5cm.
The geometric size of the X-ray beam and the open beam radiation dose equivalent rates
were recorded at 5, 10, 30, and 100cm and extrapolated back to the surface.
testing
cond
itions
Radiation
measurements were conducted
–
Using a
Thermo RadEye B20-ER meter.
With the survey meter calibrated by the survey meter manufacturer.
The instru
ment
stray radi
ation profile
was c
ollected
–
Operating without a filter.
With the larger 8mm spot size collimator.
At its effective maximum power (40keV and 99uA in the appendix) and maximum voltag
e
(50keV and 39uA).
At distances of 5, 10, 30, and 100c
m.
W
ith and without a sample covering the opening at the nose of the instrument.
Using a duplex (3mm thick) check sample.
Operating at commonly used setting and corresponding filters for 50 (in the appendix)
,
40, a
nd 15 keV.
Locations for the stray radiation profiles and results are shown in the figures and tables below,
and the appendix. Correction factors to agree with results from 80 pkV, 2.9mm Al HVL NanoDots
(TLD dosimeters) from Landauer were applied.
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Testing Equipment
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