- 5 -
6.
Mounting the sensor
The O2X is mounted on a telescopic fibreglass rod and placed in a mounting bracket
that fastens to a handrail, please refer to the Appendix 1 for further details. As an
alternative way of mounting the sensor, an adjustable slide rail holder is available,
please refer to the Appendix 2 for further details.
For best measurement, the rod shall be mounted in an angle, 5 – 30 degrees from
vertical.
Cable Connections
Connect the sensor to the BB2 control box using the attached connector on the end of
the sensor cable. In the event that two sensors are to be connected to the same BB2
control box, use the Y-splitter (P/N 21505534).
NOTE!
Never try to turn the connector housing to fasten or remove the connector, only
the fluted ring at the top of the connector shall be turned.
Installation Tips
•
Adjust the rod so that the sensor is at least 12” below the liquid surface or the
lowest water level in decant applications (SBRs) to prevent the sensor from
coming out of the liquid.
•
In an aeration tank, ensure that the sensor is not directly above a diffuser head.
To obtain the most representative dissolved oxygen level, the sensor should be
installed on the backside of the rolling diffuser effect.
•
In an aeration basin, flushing may not be required if the tank is well agitated. To
verify the need for flushing, remove the sensor from the liquid after it has been
in the liquid for several days. If the sensor is coated with solids, flushing with
water or compressed air is recommended.
NOTE!
The transmitter is delivered with the
electrode uninstalled. A yellow plastic cap
protects the electrode connection plug and the
flushing nozzle in the transmitter. The plastic
cap must be removed and the electrode must be
installed and calibrated before the transmitter
is subme rged into water (refer to Section 7).
Retain the yellow cap as it may be used as
protection later. Do not press on the top of the
cap if the electrode is installed.
