ORTEC Micro-Detective-HX, Operation Manual

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5. MONITORING AND MEASURING WITH THE
MICRO-DETECTIVE-HX
Once the Home screen reads
Status: Ready
, the radiation threshold limits have been set for your
site, and a suitable background measurement has been performed, the instrument is ready for
use. This chapter steps tells how to conduct radiation surveys with the HX. Section 5.6 steps
through a hypothetical Survey measurement as an example.
Before using the HX, we strongly recommend you review the following:
!
Quick-reference menu tree — All navigation and selection operations refer to the HX
master menu diagram and instructions in Chapter 4, which starts on page 33.
!
Overview on using the HX — For introductory information on data acquisition, analysis,
and display, see Section 2.4.
!
Alarm handling — Read Section 2.5 for detailed information on alarm types, displays, and
acknowledging.
!
Configuring the HX software application — For information on setting alarm limits,
changing which nuclides are reported as threats or innocents, taking background
measurements, displaying or hiding the survey spectra, adjusting the audio and vibratory
alarm volume, and other software setup topics, see Section 3.4.
!
Cautions and operation limits — To ensure you know the HX hardware’s operating limits,
read Section 2.7.
!
Gamma detector performance checking (HPRDS-qualified units only) — If your site will
be using the GammaVision quality assurance module to track detector performance, follow
the instructions in the HX Performance Check Guide to implement this feature before the HX
is used for monitoring and surveying.
As described in Section 2.4, the HX monitors and analyzes for radiation at all times and on all
screens (even if radiation alarms are suppressed on the Home screen). All identifications are
transitory; that is, they are reported on the real-time ID section of the screen for as long as the
source is present and identified, then they are removed from the screen.
When radiation is detected and identified, the corresponding alarm(s) is posted in the message
area at the bottom of the screen. You must press or tap the S button once to acknowledge (and
silent) each alarm before you can perform the next operation.