Thermo Scientific AquaSensors
™
AnalogPlus
™
Dissolved Oxygen Sensor (ppm) User Guide
14
3.5.
Immersion Mount with Ball Float
Standard immersion mounting hardware with a ball float is used to position a sensor at a fixed level below the
surface of the water. The swivel hardware is left unlocked so that it can move up or down as the level of the
water changes. The ball float is inflated with air. There is a 45-degree angle at the end of the extension pipe
to maintain the proper positioning of the float in the water.
To remove the sensor, the swivel is unlocked and the pole swings up as shown in the illustration on the next
page. The pole protects the sensor cable from damage. The junction box is used to connect the sensor cable
in the pipe and to take an extension cable to the AV88 analyzer. When automatic cleaning of the sensor is
needed an AV88 universal analyzer relay can be configured to activate a solenoid valve to release air or water
on the sensor head.
Figure 3.6: Immersion Mount Hardware with Ball Float – In measurement position.
