User Guide

1514
PROBE MAINTENANCEPROBE MAINTENANCE
PROBE MAINTENANCEPROBE MAINTENANCE
PROBE MAINTENANCE
Rinse the probe with clean water after measurements. If a more
thorough cleaning is required, remove the probe sleeve and clean the
probe with a cloth or a nonabrasive detergent.
Make sure to reinsert the sleeve onto the probe properly and in the
right direction.
After cleaning the probe, recalibrate the instrument.
When the batteries are inserted and no power adapter is connected,
the meter can recognize the following battery charge levels:
• Low battery - "LOBAT" indication is displayed on the LCD. Back-
light is automatically disabled and it is not possible to enable it
until new batteries are inserted or an external power adapter is
used. When "LOBAT" appears, batteries have typically 10% of
their life left and the meter is still measuring properly.
• Very weak battery - The meter shuts off to avoid erroneous
operations.
Note: If the meter is not powered for several minutes (e.g. in dead
battery condition), the current date and time are lost.
Battery replacement must only take place in a non-hazardous area
using 1.5V alkaline AA type batteries.
In order to replace run down batteries, simply
remove the two screws on the rear cover of the
instrument and replace the four 1.5V AA bat-
teries with new ones, paying attention to the
correct polarity.
New batteries allow 150 hours approx. of continuous use (with 2700
mA/h batteries and without backlight)
A 12VDC power adapter can also be used. It is recommended to use
the Hanna voltage adapters that use the proper polarity configuration.
However, other adapters can be used. In
this case, check the polarity of your adapter
before connecting it to the meter.
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENT
Item Description Valid values Default
tc Temp. compensation coeff. 0.00 to 6.00 %/C 1.90
tcE Temp. compensation mode Atc, Mtc, notc Atc
tdS TDS factor 0.40 to 0.80 0.50
CEL Cell constant (K) 0.500 to 1.700 1.000
Aof Auto-Off enable On, OFF On
vEr Firmware release
Chr Battery level test
Notes
I Once enabled, the Auto Off time is fixed at 5 minutes.
II When the battery level test is selected (Chr), LCD will display the
remaining percentage of battery charge. 100% means fully charged
battery and 0% corresponds to the minimum battery level that
allows the meter to operate.
The battery charge level calculation is based on a typical alkaline
battery discharge curve.
If the meter is connected to an external power adapter and "Chr"
is selected, the LCD will display "LINE".