10 11
OPERATIONAL GUIDE
INITIAL PREPARATION
Each meter is supplied complete with a 9V battery. Slide off the
battery compartment cover on the back of the meter, install the
battery while paying attention to its polarity.
Always remove the electrode protective cap before taking any mea-
surements. If the electrode has been left dry, soak the tip (bottom
4 cm / 1½") in pH7 or pH4 buffer solution for a few hours or
overnight to reactivate it.
For HI 8014:
Connect the pH electrode to the BNC socket on the top of the meter.
Switch the meter on by turning the rotary knob to the °C, pH or mV
position.
For HI 8915:
Connect the pH electrode to the BNC socket on
the top of the instrument. Connect the tem-
perature probe to the other socket. The
temperature probe can be used independently
to take temperature measurements, or it can
be used in conjunction with the pH electrode to
utilize the meter's ATC capability.
Turn the meter on by pressing ON/OFF.
For HI 931000:
Attach the pH/°C electrode to the DIN socket on the top of the meter,
tighten the retainer ring and turn the meter on by pressing ON/OFF.
ON
OFF
TOP VIEW
BNC
electrode
connector
OFF
mV
°C
pH
TOP VIEW OF HI 8915
ins
rumn s
CFM
°C
CAL
OFF
ON
pH
HI 931000
ON
OFF
pH MEASUREMENTS
For HI 8014:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and a
ChecktempC (or another accurate thermom-
eter) in the sample to be tested.
Turn the rotary knob to the °C position to
display temperature setting on the LCD.
Using the provided screwdriver, turn the tem-
perature trimmer to display the temperature
measured by ChecktempC, e.g. 25°C..
Turn the rotary knob to the pH position to
display the pH measurement.
Shake the electrode briefly and allow a couple
of minutes for the electrode to adjust and
stabilize. The display will show the pH value
compensated for the manually adjusted tem-
perature.
For HI 8915:
To take a pH measurement simply submerge
the tip (4cm/1½") of the electrode and the
temperature probe in the sample to be tested.
For HI 931000:
Simply submerge the tip (4cm/1½") of the
combination pH/temperature electrode in the
sample.
Turn the instrument ON, shake the electrode
briefly and wait until the stability indicator
"∆" stops blinking. The display will show the
pH value compensated for temperature.
°C
4 cm
(1½")
OFF
mV
°C
pH
OFF
mV
°C
pH
pH
4 cm
(1½")
°C
ºC
∆
4 cm
(1½")
