Hanna Instruments HI8424 User Manual

Page 14

B A T T E R Y R E P L A C E M E N T

The meter displays the remaining battery per-
centage when turned on. When the level is
below 5%, the battery symbol on the bottom
left of the LCD blinks to indicate a low battery condition.
If the battery level is low enough to cause erroneous readings, the Battery
Error Prevention System (BEPS) turns the meter off. When the battery
needs to be replaced, remove the cover on the rear of the meter and replace
the rundown battery with a new
one, while paying attention to
the correct polarity. Reattach
the back making sure that the
gasket is in place and tighten
the 3 screws to ensure a good
seal.

Replacement should take
place in a non-hazardous area
using a 9V alkaline battery.

L C D M E S S A G E S & T R O U B L E S H O O T I N G

TAGS & SYMBOLS
• pH, mV, °C, °F

Measurement unit of the selected mode

• ATC

Indicates Automatic Temperature Compensation (in pH
or temperature mode)

• MTC

Indicates Manual Temperature Compensation (in pH
or temperature mode)

• HOLD

Blinks when in Hold mode. Reading frozen on LCD.
The user can scroll through the three ranges by
pressing RANGE

• CAL

In pH calibration mode, or in pH mode when the
meter is calibrated

• CFM

Blinks in pH calibration mode when the meter is ready
to confirm a value

• WRONG

During pH calibration, when the meter does not
recognize the pH buffer

• %

At startup, when showing the percentage of the
remaining battery life

•

In pH mode, when meter was calibrated with pH 7.01
buffer

•

In pH mode, when meter was calibrated with pH 4.01
buffer

•

In pH mode, when meter was calibrated with pH
10.01 buffer

•

(hourglass symbol): When reading is not stable

•

(battery symbol):

At startup, if remaining battery life is below 5%