7
Maintenance and Care of Sensors
Foulants can lead to inaccurate sensor readings.
Sensors should be cleaned and calibrated
regularly using the following procedures.
Cleaning of Flow/Conductivity/Temp Sensor
Isolate the flow to the manifold.
Remove the locking nut from the Flow/
Conductivity/Temp sensor.
Abrade the sensor surface with 300–400 grade
wet–and–dry paper until the surface is clean,
the two carbon electrode surfaces are clearly
visible, and the surface wets out freely.
Ensure flow paddle is free from debris. Rinse
the sensor in fresh water and replace it in the
manifold.
Cleaning of pH/ORP sensor
Isolate flow to the manifold.
Remove the sensors from the manifold by
loosening the lock nut and withdrawing the
sensor from the manifold.
Rinse the sensors in fresh tap water and
remove any visible fouling. This should be done
carefully by lightly scrubbing with a tooth brush
or similar.
Place the sensors in the Electrode Cleaner
solution (AS9500) for about 5 minutes to
completely dissolve any trace of inorganic
foulants.
Remove and rinse thoroughly in fresh water
before replacing it in the manifold.
Proceed to calibration or verification of sensors
as outlined in the commissioning section.
Accessories and Spare Parts
Reagents
AS1413 -1413 uS/cm conductivity solution
AS7004 - pH 4 buffer solution
AS7007 - pH 7 buffer solution
AS5250 - 250 mV ORP solution
AS5475 - 475 mV ORP solution
AS4250 - pH 4.01/250 mV combo solution
AS7086 - pH 7.01/86 mV combo solution
Sensors
PR_FCT – Combination Conductivity, Flow and
Temperature Sensor.
PR_pHORP – Combination pH, ORP and
Ground reference Sensor
Peristaltic Pumps
AP_PERI_S_KIT – AP PERI SERVICE KIT
(Maximum service interval - 12 mths)
Included in this Kit are the following
• AP_TUBE4824 (1)
• AP_INJECT (1)
• TUBESUCTION(2)
• TUBEDISCHARGE (2)
AP_PERI_O_KIT – AP PERI OVERHAUL KIT
(Maximum service interval - 2 years)
Included in this Kit are the following
• AP_TUBE4824 (1)
• AP_INJECT (1)
• AP_ROLLBACK (1)
• AP_DWEIGHT (1)
• AP_LID (1)
• TUBESUCTION (2
• TUBEDISCHARGE (2)
Test Meters required
HI9813 Portable pH/cond meter
HI8314 Portable pH/ORP meter
Routine Testing
The use of an Aquarius control system will
automatically vary the dosages and maintain
good conductivity, pH, ORP and disinfection
control, even where there are wide fluctuations
in system load or demand.
The principles of “Best Practice” and “Duty of
Care” that are the responsibility of the system
owner dictate that all systems should be
routinely serviced and tested chemically and
the results logged.
Installation Guidelines
1
1
Installation Guidelines
Installation Guidelines
