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Screening alarm
22
22.1 General
The screening alarm can be used, for example, at airports to detect passengers with ele-
vated body temperatures, which may indicate the presence of a fever.
The screening alarm can also be used to detect temperature anomalies in a series of in-
spected objects in a similar/fixed setup.
Activating the screening alarm will turn on a measurement box and screening data in the
result table.
The sampled average temperature.
The alarm temperature.
The measured temperature.
The alarm will trigger when the measurement box measures a temperature higher than the
alarm temperature. The alarm temperature is, in turn, the sum of a specified allowed devia-
tion and a sampled average value.
22.2 Procedure
Follow this procedure:
1. Enable the screening mode by selecting
(Settings) > Device settings > User inter-
face options > Screening mode = On.
2. Push the joystick to display the menu system.
3. Use the joystick to go to
(Recording mode).
4. Push the joystick. This displays a submenu.
5. Select
(Screening).
6. Push the joystick. This displays a dialog box where you can define the settings for the
alarm.
Allowed deviation: The allowed deviation from the sampled average.
Alarm sound: Applicable values are Beep or No sound.
7. Push the joystick. This closes the dialog box.
8. Aim the camera toward a point of interest. The object should be within the frame of the
measurement box.
9. Push and hold the programmable button
to reset the sampled average.
10. Push the programmable button
to sample.
11. Aim the camera toward more points of interest. Sample 10 times to build up a sample
base by pushing the programmable button
.
The alarm is now set up and ready to use. Occasionally record a few samples if the
alarm is used for a long time or if the conditions change.
Note
The algorithm has a memory of the last 10 samples. It discriminates between the high-
est and lowest values, and calculates an average of the remaining values.
Do not modify the measurement setup or activate another alarm because this will deac-
tivate the screening alarm.
#T559954; r. AL/37426/37426; en-US
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