6
INITIAL PREPARATION
The meter is supplied with rechargeable batteries (located inside the
meter - see page 14 for details).
To prepare the instrument for use, connect the pH electrode and the
temperature probe to the BNC and temperature sockets on the top of
the instrument. The temperature probe can be used independently to
take temperature measurements, or it can be used in conjunction
with the pH electrode to utilize Automatic Temperature Compensation
(ATC) mode. If the probe is disconnected, temperature can also be set
manually with the UP and DOWN arrow keys.
Turn the instrument ON by pressing ON/OFF.
At start-up the display will show the battery percentage and then all
LCD segments while the instrument performs a self check (or as long as
the button is held).
The meter automatically enters measurement mode.
After measurement switch the meter off. Clean the electrode and store
it with a few drops of HI 70300 storage solution in the protective cap.
To save batteries, the auto-off feature turns the meter off after 20
minutes with no button pressed. To disable this feature, see “Setup
Menu” section on page 13.
pH MEASUREMENTS
To take a pH measurement remove the electrode
protective cap and submerge the electrode and
the temperature probe 4cm (1½") into the
sample and stir gently.
If necessary, press the RANGE key until the display
shows pH mode (HI 9125 only).
Allow time for the reading to stabilize.
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OPERATIONAL GUIDE
23
pH ELECTRODES
All electrodes part numbers ending in B are supplied with a BNC
connector and 1 m (3.3') cable, as shown below:
HI 1043B
Glass-body, double junction, refillable, combination pH electrode.
Use: strong acid/alkali.
HI 1053B
Glass-body, triple ceramic, conic shape, refillable, combination pH
electrode.
Use: emulsions.
HI 1083B
Glass-body, micro, Viscolene, non-refillable, combination pH electrode.
Use: biotechnology, micro titration.
HI 1131B
Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.
120 mm
4.7"
12 mm
0.5"
9.5mm DIA
0.37"
"S" VERSION
HI 1043
120 mm
4.7"
12 mm
0.5"
"S" VERSION
HI 1053
120 mm
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