Hanna Instruments HI8424 User Manual

Page 12

While in normal measurement mode, press and hold the CFM/SETUP key for about
5 seconds until the meter enters the menu selection mode.
The following parameters can be set from the menu:
1. Auto-off feature: 20 minutes (default setting) or disabled;
2. Acoustic signal: enabled (default setting) or disabled;
3. Temperature unit: °C (default setting) or °F.
When entering the menu mode, the auto-off selection is entered. The LCD shows
in three subsequent screens "Auto", "OFF" and "20" to indicate that the 20
minutes selection is active, or "Auto", "OFF" and "no" if the feature is disabled.

The user can toggle the selection by pressing CAL/SELECT or move to the next
step with CFM/SETUP.
The following selection is the acoustic signal, which is displayed on two
subsequent screens: "bEEP", "OFF" when the feature is disabled, and "bEEP",
"On" when the feature is enabled.

Press CAL/SELECT to toggle the selection and CFM/SETUP to move to next step.
At this point it is possible to set the temperature unit, by selecting "Unit", "°C"
or "Unit", "°F".

Press CAL/SELECT to toggle the selection and CFM/SETUP to exit the menu
selection mode and return to normal measurement mode.

M E N U S E L E C T I O N

ELECTRODE CONDITIONING & MAINTENANCE

PREPARATION PROCEDURE
Remove the electrode protective cap.
DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal with
electrodes and they will disappear when rinsed with water.
During transport tiny bubbles of air may have formed inside the glass bulb. The
electrode cannot function properly under these conditions. These bubbles can be
removed by "shaking down" the electrode as you would do with a glass
thermometer.
If the bulb and/or junction are dry, soak the electrode in

HI 70300 storage

solution for at least one hour.

Only for refillable electrodes; must be open while measuring.