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D.2 Checking the Proper Function of the System
2. System boot-up and welcome screen
a) Self-checking routines run in the background of the boot process. If a self-check
fails, a corresponding error message will appear on the device and give you fur-
ther advice.
b) Once started, the system should welcome you in dose rate mode. If no source
is around, the ambient dose rate is expected to be between 0.01 µSv/h and
0.08 µSv/h.
c) The count rate in cps should be greater than 0. There are always natural radia-
tion counts.
d) If you have a neutron detector, the neutron cps should be close to 0.00 cps.
Sometimes values of about 0.05 might occur. If you observe a neutron count
rate of 0.5 cps or greater, it is likely that a neutron source is nearby.
e) If the battery was charged, the battery status bar should indicate fully charged
status
f) If the bar shows a low battery, this might point towards a problem with the bat-
teries. Try charging the battery again.
3. Specific checks in spectrum mode
a) Enter spectrum mode. Without a source, start a spectrum acquisition and ob-
serve the area around 1460 keV. After a few minutes, the natural potassium
peak should appear at 1460 keV. You can use this peak to verify the correct po-
sitioning of the instrument even if no cesium calibration source is available. After
fresh startup, the instrument should have at least a precision of around ±0.5 %
of the line energy or a maximum deviation of ±7 keV around the 1460 keV line.
b) After calibration, the instrument should have the potassium 1460 keV line well
within ±0.25 (between 1457 keV and 1463 keV).
c) Using an external cesium calibration source: Place the source in front of the de-
tector at a minimum distance of 10 cm. Enter calibration check and wait for the
threshold sum of the peak counts to be collected. The system will then show
you the report of the peak properties. The resolution should not be greater
than 7.3 %. The peak position deviation should not be greater than 0.5 % af-
ter startup, corresponding to a shift of ±3.3 keV around the target value of
661.6 keV.
d) If the peak position deviates, press
the acquisition of the cesium reference in calibration mode and wait until new val-
ues for the peak assessment appear. The peak should be positioned well within
0.2 %, ±1.7 keV of the target peak position of 661.6 keV.
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Cal
Software 3.2.12r • Document 3.3.3b4o
radEAGLET-R User Manual
to calibrate the instrument. Repeat
© innoRIID GmbH • 2020-11-18
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