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Aspirating Smoke Detector
7.2.2
Air-Pressure-Dependent Calibration
Air-pressure-dependent calibration of the airflow sensor
A barometer (recommended: GPB 1300 digital precision pocket barometer from Greisinger
electronic GmbH) and a multimeter are required to calibrate the airflow sensor dependent on
air-pressure. The following steps are required:
1.
2.
3.
4.
5.
6.
7.3
Testing the Detector Module and Alarm Transfer
Notice!
In order to accelerate alarm evaluation while testing with the test gas, LOGIC · SENS must be
set to "off". On completion of the test, reset LOGIC·SENS to "on".
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Bosch Sicherheitssysteme GmbH
1
Make sure that the aspirating smoke detector has been operating for at least 30 minutes.
Determine the height above sea level, air pressure, and ambient temperature of the
installation location and enter these values in the test log.
Use the air pressure correction tables to bring the calibration value in line with that of the
airflow sensor. Also enter these values into the test report. When selecting the air-
pressure-correction table, take the pipe planning into account
Remove the "X6 ext. Display" connection terminal from the motherboard. Connect the
multimeter to the measuring points MP2 (+) and MP3 (-). Note the polarity. On the
measuring device, select the "V-DC" range. The default voltage at the measuring points is
1.2 V.
Using the trimming potentiometer, set R53 to the calibration value from the air-pressure-
correction table with the help of a small screwdriver. Reinsert the "X6 ext. Display"
connection terminal into the motherboard.
Connect the FCS-320 housing and check that it is correctly positioned.
Detach the detector module using test aerosol. Spray the test aerosol either into the first
air sampling opening or into the test adapter on the pipe system.
Use the table below to check the transmission line to the fire panel.
X6 ext. Display
2
3
1 2
JU1
Operation Guide
Commissioning | en 105
1
Detector module
2
Connection terminal
"X6 ext. Display"
3
Trimming
potentiometer R53
MP2/MP3 Measuring points
MP2 (+) and MP3 (-)
2018.04 | 2.0 | F.01U.130.926
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