ORTEC Micro-Detective-HX, Руководство по эксплуатации

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ORTEC Micro-Detective
®
-HX Human Portable Radiation Detection System — Operation Manual
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The soft buttons on the screen are also a reminder that the left button on the handle (as you hold the HX) is S and
the right button is N.
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Battery charge and discharge times — The HX internal battery charges in approximately
3 hours and provides approximately >3 hours of operation. To reduce current draw during
charging, the battery does not begin to charge until the HPGe detector has cooled down. For
additional information about startup and charging the battery, see Section 3.3.
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Background measurement — Periodic background measurements minimize false positive
alarms for K-40 and other naturally occurring radioisotopes from building materials such as
concrete. A user with password access can choose the number of days between required
background checks. If you allow the interval to expire without updating the background
measurement, the HX lets you perform unlimited passive monitoring (Section 5.1) but will
not enter Survey mode (Section 5.2). However, even with an expired background, the HX
provides proper, real-time identifications of SNM, RDD, and other threats. See Section 3.3.4
for more information.
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Advanced features and power-off are password-protected — A password is required to
access the Advanced and Comm menus, and to power off the HX. For instructions on
entering the password, see Numerical Entries (page 7).
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No daily startup/shutdown routine — The HX is designed for continuous duty. It self-
calibrates on the 1460 keV peak of naturally occurring K-40, and recalibration is not needed.
Between uses, the unit will typically be connected to an external power source with the
cooler running.
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Gamma detector performance checks (HPRDS-qualified unit only) — If you purchased
the HPRDS-qualified HX, it is bundled with our PC-based GammaVision program, which
has a quality assurance module to measure and track the performance of the HPGe detector.
If your site will be using this feature, it must be implemented for each HX in your system
before the instruments are used for monitoring and surveying, according to the HX
Performance Check Guide.
2.3. User Interface
The user interface consists of:
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Control Buttons — Two buttons on the front of the handle, Select (S) and Navigate (N),
mirrored by S and N soft buttons on the bottom of the screen.
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These handle buttons and soft
buttons allow you to operate all menus and perform all survey and sampling operations
except text entry. See Menus (page 6) and Numerical Entries (page 7).