Hanna Instruments hi 98140 User Manual
12
TAKING ORP MEASUREMENTS
(HI98150 ONLY)
Connect the ORP electrode to the meter and press the ON/OFF key.
The meter automatically sets the mV range.
If the ORP electrode is not connected the LCD will display the "no
probe" message and then dashed lines in place of the readings.
To take ORP measurements, simply submerge the bottom 4 cm (1½")
of the ORP electrode in the solution to be tested, stir gently and allow
for the reading to stabilize.
The meter automatically sets the mV range.
If the ORP electrode is not connected the LCD will display the "no
probe" message and then dashed lines in place of the readings.
To take ORP measurements, simply submerge the bottom 4 cm (1½")
of the ORP electrode in the solution to be tested, stir gently and allow
for the reading to stabilize.
Note: The ORP electrodes are not provided with the temperature
sensor.
By continuously pressing the RANGE key the following information will
be displayed on the upper LCD:
• Time
• Day - Month
• Year
Pressing RANGE again, the meter returns to mV reading.
be displayed on the upper LCD:
• Time
• Day - Month
• Year
Pressing RANGE again, the meter returns to mV reading.
Note: If measurements are taken successively in different samples, it
is recommended to rinse the electrode thoroughly with deion-
ized water or if not available tap water first and then with
some of the next sample to condition the electrode before
immersing it in the sample to be tested.
ized water or if not available tap water first and then with
some of the next sample to condition the electrode before
immersing it in the sample to be tested.
The temperature sensor is integrated in the pH electrode.
Immerse the pH electrode in the solution (allow a few minutes for the
temperature to stabilize) and press the ON/OFF key. The temperature
is displayed in the lower LCD.
Immerse the pH electrode in the solution (allow a few minutes for the
temperature to stabilize) and press the ON/OFF key. The temperature
is displayed in the lower LCD.
Note: If temperature measurement is out of range the LCD will
display " - - -".
TAKING TEMPERATURE MEASUREMENTS