Subassembly 34: Ambient Air Monitoring - Xylem WEDECO SMOevo PLUS Series Original Manual

5.3.5 Subassembly 34: Ambient air Monitoring

34.1.10 Ozone
sensor
Manual_SMOevoPLUS_eng_01.2019.doc
Manual Ozone Generating System SMOevo
The safety equipment of the ozone system includes the
ambient air monitor 34.1.10. The ambient air sensor is
installed at a place where the highest ozone concentration is
expected in case of a malfunction.
The ambient air sensor has a built in self test function for daily
checking the functionality of the sensor. Sensor replacement
is recommended every six months.
Maintenance Schedule and the Appentix
Default limit values are as follows
0.1ppm: the PLC generates a warning message.
0.3 ppm: alarm message. The PLC shuts down the system, a
visual and acoustic alarm is triggered, and the ventilation
system is activated.
0.5 ppm: shutdown via relay contact.
Refer to Chapter Safety.
System Description
Refer to Chapter
page 56 of 179
PLUS