Calibration; Chlorine Calibration - Blue I HydroGuard HG-302 Manual De Uso

Note: The (Scroll) button displays the next parameter in the list, so that the operator can check
every parameter in the menu. There is no scroll-back option. To view or change a previous
parameter in the menu, you must exit the menu by pressing
procedure from the beginning.
4.4

Calibration

Parameters must be calibrated with measurements taken with external testing devices. Always use digital
calibration devices, not the less accurate visual test kits. Alternatively, standard solutions may be used.
Make sure the standard solution is not expired or contaminated prior to using. Follow the procedures below
EXACTLY as instructed.
ALWAYS take water for calibration from the sampling valve, NOT from pool.
The controller should always be calibrated with water from the same source.
Note Calibration is only required every 6 to 12 months. Minor deviations will exist between all testing
equipment. These minor differences do not warrant the calibration of the colorimeter.

4.4.1 Chlorine Calibration

1. Open the water sampling valve. Let water flow while observing the colorimeter countdown
timer in the LCD display.
2. Fill the sampling container when the countdown timer reaches zero (0).
3. Test the water sample for chlorine using a digital photometer.
4. Press
The top line will display "Cl Calibrated To" and a number. The number displayed is the last value someone
entered for the calibration. The bottom line will display "Cl Sensor Was" and a number. This number is the
sensor reading without any calibration at the time of the last calibration. If there is a large discrepancy
between these two numbers, the sensor was calibrated improperly or the sensor needs to be replaced. The
value displayed normally on the main screen and the value the controller uses to determine dosing rates is
the calibrated value.
CL SET POINT 1
Figure 15: Changing a Parameter
(Scroll) three (3) times until Cl Calibrated to appears in the LCD display.
Esc
(Esc), and start the above
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