4 5 6
→
7 8 9
• Press «SELECT», the screen 3 appears on the display, where you choose the type of
radiation, in our example - «BETA» for which the alarm threshold is set.
• Press the button « » once, the cursor is directed to the appropriate line (screen 4);
• Press «SELECT». The screen for setting the threshold for beta radiation (screen 5)
appears on the display.
• Double-press of the button « » makes the cursor move to the line of the threshold
value setting.
• Press the button «CHANGE» to confirm the selection (screen 6), which is accompa-
nied by the installation of a tick « » in front of the selected line.
• When setting the threshold, its value is set by pressing «+5» and «-5» (screen 6),
each pressing of these buttons increases (decreases) the set value by 5. By pressing
«+5» for 8 times we set the threshold value equal to 50 1/ cm
2
*min (screen 8). Starting
from the threshold value 50, a change step increases to 10, and the button icon changes
to «+10» (screen 7). By pressing the «+10» for 2 times we set the threshold value equal to
70 1/ cm
2
* min (screen 8).
• To memorize the set value press the button «SAVE».
When you press «SAVE», the set threshold value is memorized and you return to the
screen of thresholds control (screen 9).
Twofold pressing the button «RETURN» returns you to the «MENU».
c) Section «BACKGROUND»
In this section you can control the options of the mode «MEASURE»: taking the
background into account or not and determine the value of the background dose rate and
the flux density of the background.
In the mode «MEASURE» the background values are calculated for both gamma - and
beta-radiation, in the mode «SEARCH» the background value is calculated for the
cumulative effect of gamma - and beta-radiation. To set up a mode «MEASURE» taking
the background into account, you must first carry out the background level evaluation.
•
To enable the evaluation of the background level you should switch from
«MEASURE» to «MENU», to do this press the «MENU» button (screen 1). The display
shows the «main screen» menu - the screen 2.
GAMMA
►
BETA
●
SELECT RETURN
●
●
▼
OFF
√
ON
►
10 1/cm
2
*min
●
CHANGE RETURN
●
●
▼
OFF
ON
√
10
1/cm
2
*min
●
+ 5 SAVE
●
●
- 5
OFF
ON
√
50
1/cm
2
*min
●
+ 10 SAVE
●
●
- 5
OFF
ON
√
70
1/cm
2
*min
●
+ 10 SAVE
●
●
- 10
►
OFF
√
ON
70
1/cm
2
*min
●
CHANGE RETURN
●
●
▼
16
