14
OPERATIONAL GUIDE
TAKING PH MEASUREMENTS
Connect the instrument to the 12VDC adapter (HI710005 or
HI710006). Plug the adapter into the mains.
Make sure that the instrument has been calibrated for pH before
taking pH measurements (see page 18).
For HI8519 only:
• Connect the pH electrode to the meter and switch
the instrument on by pressing the ON/OFF key.
• Immerse the electrode tip (4 cm/1½") into the sample and shake
briefly.
• Take the temperature of the solution with a
ChecktempC or a glass thermometer (e.g.25°C).
• Press the °C key to display temperature settings on
the LCD.
• Adjust the Temperature °C knob to display the
temperature of the sample.
• Press the pH key to display the pH measurement.
• The display shows the pH value of the test solution
compensated for temperature.
For HI8417, HI8520, HI8521 only:
• Connect the electrode and the temperature
probe (if automatic temperature compensa-
tion is desired).
• Press the ON/OFF key to turn the meter on. The
meter will automatically default to the pH measure-
ment mode.
• Immerse the electrode and the temperature probe
in the sample and shake briefly. Wait for 30 sec-
onds before taking readings.
• The display shows the pH reading compensated for
temperature.
ON
OFF
°C
°
C
pH
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