ORTEC
®
Detective-EX/DX
®
-100T Portable HPGe Spectrometer — User’s Manual 931040P / 1014
30
Figure 23. The Survey Mode
Screen.
Fig. 24. The factory-set alarm limits are 10000 µSv/h for the Gamma Dose Rate and 500 cps for
the Neutron Count Rate bar. To set lower limits, see Section 5.2.7.
When the gamma dose rate goes above the limit, the
WARNING!!! High Gamma Dose Rate!
message is displayed in the Instrument Status Area and an alarm sounds. You can optionally
choose to set lower gamma dose rate and neutron count rate alarms using the Dose Alarm setup
feature under the Advanced Settings screen (Section 5.2.7).
! Tap Identify to start the Identification Mode Section 3.2).
! Tap Monitor to start the Monitor Mode (Section 3.4).
! Tap Search to start the Search Mode (Section 3.3).
! Tap SNM to use the SNM Mode (Section 3.5).
! Tap Advanced to display the Advanced Setup dialog (Chapter 5).
NOTE If a blue simulated LED ( ) is displayed in the upper left, beside the screen title, the
instrument is in the LCX radiation detection mode, which we strongly recommend for
use only by experienced gamma spectroscopists. Be sure to read Section 5.2.3.3 and/or
refer to your organization’s operating procedures before using LCX Mode.
Figure 24. The Gamma Count-
Rate Meter As Count Rate
Increases.
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