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TruSense Water Chemistry Analyzer | Owner's Manual
®
Section 5.
NOTE: To maintain accurate and reliable operation, the sensors must be
calibrated before the initial use. It is recommended to calibrate
sensors monthly and when the measurement seems inaccurate.
Buffer solution is included for checking calibration.
1.
NOTE: For calibration, you will need 20 mL of pH 4 buffer solution, 20mL
of pH 7 buffer solution and 20mL of ORP 470mV buffer solution. These are
available from Fluidra (pH & ORP R0952600, pH R0952500, ORP R0952800).
You can also use standard calibration buffer solutions available in your pool
store (pH 4, pH 7, ORP 460mV, ORP 468mV, ORP 470mV.
5.1
2 point pH Sensor Calibration
2 point calibration is the preferred and most accurate across range.
1.
Turn off pump and filtration system at the breaker. Automation System
needs to be in auto, NOT service mode.
2.
Close the valves if needed.
3.
Fill a glass with clean water and rinse the sensor storage tube. Keep the
clean water for rinsing.
4.
Fill the storage tube to the halfway point with pH 7 buffer solution, see
Figure 5.
Figure 5.
Fill storage tube halfway
Calibration
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