To set the threshold enter the «MENU», select the section of «Threshold» (screen 1),
choose the type of radiation, for which the set threshold (screens 2, 3), and enter the
screen setup of the threshold value (screen 4).
The threshold is set by pressing «5» and «-5» (screen 6). Each press of the respective
button increases or decreases the set value by 5. Starting from the threshold value 50, a
change step increases to 10, and buttons icons are changed to «+10» (screen 7).
When the maximum threshold value (120 1/cm
2
*min) is set, the button
A
icon is
changed to «RESET» (screen 8). Pressing the «RESET» resets the threshold to 0, and
buttons icons are changed to «+5» and «MAX» (screen 9).
Pressing the «MAX» sets the maximum threshold of 120.
When you press «SAVE» the set threshold value is saved and you return to the
threshold control screen (screen 4).
The setting of the alarm threshold for gamma radiation can be executed in the same
way. The difference lies in the fact that, in accordance with the maximum possible value of
a threshold equal to 1,20 µSv/h, a threshold change step is 0,05 µSv/h or 0,10 µSv/h, and
button icons« +5 », « -5 »,« +10 »,« -10 » remain unchanged.
Double pressing «RETURN» executes a return to «main screen» menu.
To exit the «MENU» press the button «RETURN». The «screen RD1008» appears,
after the first cycle the screen «MEASURE» or «SEARCH» appear with the set icons and
thresholds values.
In the mode «SEARCH» (see art.1.3.3.2) the alarm threshold value can be set inde-
pendently of the thresholds set in the «MEASURE» mode. When switching the profiles the
set threshold values are saved and used when re-activate the selected profile.
The selection of alarms: a call and / or a vibrating alert is carried out in
«SETTINGS» (see art.1.3.9.4). If the dose or flux density rate recorded during one
monitoring exceed the set alarm threshold, one of two things or both alarms are switched
on:
- If AUDIO is on, the registration of each of the next gamma-ray will be accompanied
with a single beep that signals the threshold excess, when the threshold is exceeded for
beta-radiation there will be one beep at the end of the measurement cycle.
- If the VIBRO-CALL is on, then the registration of each of the next gamma-ray will be
accompanied with a vibrating alert, which signals the threshold excess, when the threshold
is exceeded for beta-radiation there will be one vibra signal at the end of the measurement
cycle.
If the threshold is off the sound call or vibra signal accompanies each detected
gamma quantum. Detection of the beta particles is accompanied by a call or vibra signal at
the end of the measurement cycle.
The example of changing the alarm threshold for the beta - radiation from
10 1/cm
2
* min to 70 1/cm
2
* min is shown below.
• To change the threshold from the «MEASURE» switch to the «MENU». The display
shows «main screen» of the menu - (screen 1).
• Press « », cursor moves to the line «THRESHOLD» (screen 2).
1 2 3
►
MODE
THRESHOLD
BACKGROUND
SETTINGS
CALIBRATION
●
SELECT RETURN
●
●
▼
MODE
►
THRESHOLD
BACKGROUND
SETTINGS
CALIBRATION
●
SELECT RETURN
●
●
▼
►
GAMMA
BETA
●
SELECT RETURN
●
●
▼
15
