SAIC Exploranium – GR-135 System Manual page: 40
e) ALARM LEVEL -
This sets the DOSE Alarm Level in micro units. Once set, if the Dose exceeds this level the audio will
alarm to warn the user. Note that this setting changes depending on the units selected, as follows :
- R - OFF, 10, 20, 50, 100, 200, 500, 1000,
2000u, 4000, 5000, 9000 uR/h
- Sv - OFF, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 40.0, 50.0, 90.0 uSv/h
- Gy - OFF, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 40.0, 50.0, 90.0 uGy/h
Note that a factor of 100 is maintained between R and Gy/Sv that approximates the relationship.
Thus if you set 2000u in the R setting this means a threshold of 2000uR/h – if the units are changed
from R to Sv – this value will automatically change to 20.0uSv/h. Thus the parameter setting is
always in micro (u) units
whether R, Gy or Sv.
In AUTOMATIC mode this parameter sets the upper (right hand) limit of the bar graph.
In both modes, if this level is exceeded, a pop-up data box warns of HIGH DOSE and warns users
to MOVE AWAY.
10.5 DATE/TIME
This selection permits the user to set up the local Date and Time. Since all stored data is date
stamped it is important to set this up correctly as an aid in locating data for data analysis
Use LEFT/RIGHT cursor to select the digit to change then UP/DOWN to change it
Ensure you follow the displayed conventions for Year, Month etc. to set the data correctly.
10.6 ROIS
This selection permits the user to select 3 ROIs to whatever channel range in the spectrum is
required.
Default settings are :
ROI#1 – 15-30 – centered on Americium-241
ROI#2 – 210-230 – centered on Cesium-137
ROI#3 – 320-470 – centered on Cobalt-60
ROI#0 – fixed at 20keV - 3000keV = TOTAL COUNT
ROIs are used in various ways:
a) SEARCH DATA – some users need the ability to search only for a specific isotope so setting the
appropriate ROI in this menu then selecting the appropriate ROI in the SEARCH menu permits this.
b) In the SEE SPECTRUM mode (see later) the ROI contents can be displayed for special applications
10.7 MISCELLANEOUS
a) LANGUAGE – selects the language for the displays. In this release, selections are
ENG (English),
DEU (German), FRA (French), POL (Polish), ESP (Spanish), SVE (Swedish), NOR (Norwegian, or
CZ (Czech). Future releases will support RUS (Russian) and JAP (Japanese).
b) BATTERY – sets the battery type. Current selections are
NICD (Nickel Cadmium) and ALK
(Alkaline).
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