Hanna Instruments HI 9210N - Manual (Page 6)

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If the batteries become weak, the meter will
display a "V" on the LCD to warn the user that
only a few hours of working life are left.
HI 9210N is also supplied with BEPS (Battery Error Prevention System),
that automatically shuts the meter off when the battery level is too low to
ensure reliable readings.
Battery replacement must only take place in a non hazardous area and
using the battery types specified in this instruction manual.
To replace the batteries, remove the rear cover of
the instrument and replace all four 1.5V AA
batteries with new ones, while paying attention
to the correct polarity. Replace the cover and
tighten the screws.
The meter is reset every time the batteries are
removed. In case of any functional problems, the
meter can be reset by removing and reinstalling
the batteries.
V
BATTERY REPLACEMENT
IMPORTANT: After performing any of the cleaning procedures, rinse the
electrode thoroughly with distilled water and soak it in HI 70300 storage
solution for at least 1 hour before taking measurements.
TROUBLESHOOTING
Evaluate your electrode performance based on the following.
• Noise (Readings fluctuate up and down) could be due to clogged/
dirty junction: Refer to the Cleaning Procedure above.
• Dry membrane/junction: Soak in HI 70300 storage solution for at
least one hour.
• Drifting: Soak the electrode tip in warm (approx. 50-60°C) HI 7082
solution for one hour and rinse the tip with distilled water.
• Low slope: Refer to the cleaning procedure above.
• No slope: Check the electrode for cracks in glass stem or bulb and
replace the electrode.
• Slow response/excessive drift: Soak the tip in HI 7061 solution for
30 minutes, rinse thoroughly in distilled water and then follow the
Cleaning Procedure above.
HI 1217D Amplified, gel filled pH electrode with built-in temperature
sensor, DIN connector and 1 m (3.3’) cable
HI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs
HI 70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs
HI 70010P pH 10.01 buffer solution, 20 mL sachet, 25 pcs
HI 7004L pH 4.01 buffer solution, 500 mL bottle
HI 7006L pH 6.86 buffer solution, 500 mL bottle
HI 7007L pH 7.01 buffer solution, 500 mL bottle
HI 7009L pH 9.18 buffer solution, 500 mL bottle
HI 7010L pH 10.01 buffer solution, 500 mL bottle
HI 8004L pH 4.01 buffer solution, 500 mL FDA bottle
HI 8006L pH 6.86 buffer solution, 500 mL FDA bottle
HI 8007L pH 7.01 buffer solution, 500 mL FDA bottle
HI 8009L pH 9.18 buffer solution, 500 mL FDA bottle
HI 8010L pH 10.01 buffer solution, 500 mL FDA bottle
HI 70300L Storage solution, 500 mL bottle
HI 70000P Electrode rinse solution, 20 mL sachet, 25 pcs
HI 7061L General cleaning solution, 500 mL bottle
HI 7073L Protein cleaning solution, 500 mL bottle
HI 7074L Inorganic cleaning solution, 500 mL bottle
HI 7077L Oil & Fat cleaning solution, 500 mL bottle
HI 80300L Storage solution, 500 mL FDA bottle
HI 8061L General cleaning solution, 500 mL FDA bottle
HI 8073L Protein cleaning solution, 500 mL FDA bottle
HI 8077L Oil & Fat cleaning solution, 500 mL FDA bottle
HI 721317 Rugged carrying case
HI 76405 Electrode holder
ACCESSORIES