ATI
Q45D-ODO Optical D.O. System
Part 3– Optical D.O. Sensor
O & M Manual
Revision C (7/09)
17 -
3.3
Submersion Mounting
Most applications for D.O. monitoring are done using a submersible sensor.
Optical oxygen sensor can be used in stagnant water conditions, as they do not
need sample flow for measurement. Most aeration tank applications in
wastewater treatment plants can for biologically active coatings on the face of the
sensor, resulting in low readings. ATI’s Auto-Clean version of this product is
preferred in these applications.
Submersible sensors are mounted to a 1" pipe using a special sensor adapter
that screws to the top of the sensor. The mounting pipe can be secured to
standard 1½” or 2” pipe rail using a mounting bracket kit available from ATI (part
number 00-0624) as shown in Figure 3-1. For standard applications, the air line
fitting may be removed as it is used only for Auto-Clean installations.
Figure 3-3 Submersible Sensor Mounting Assembly (ATI-0872)
Flexible Air Line applicable for
Auto-Clean Option Only!
