Справочник Пользователя для Hanna Instruments hi 93732

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This indicates that the meter is in a ready state
and zeroing can be performed.
Sampling in Progress. This prompt appears each
time the meter is performing a measurement.
This indicates that the meter has been zeroed
and measurement can be performed.
A zero reading was not taken. Insert a sample
before adding reagent and press ZERO.
Under range. A blinking "0.00" indicates that the
sample has absorbed less light than the zero
reference. Check the procedure and make sure you
use the same cuvet for reference (zero) and mea-
surement.
Over range. A flashing value higher than the
maximum concentration of the meter (see specifica-
tions) indicates that the sample has absorbed less
light than the zero reference. Check the procedure
and make sure you use the same cuvet for refer-
ence (zero) and measurement.
Light over range. The cuvet is not inserted correctly
and an excess ambient light is reaching the
detector. If the cover is properly installed, then
contact your dealer or the nearest Hanna Customer
Service Center.
Light under range. The zero sample is too dark for
proper zeroing. If this is not the case, contact your
dealer or the nearest Hanna Customer Service
Center.
The "V" indicates that the battery voltage is
getting low and the battery needs to be replaced.
This indicates that the battery is dead and must
be replaced.
Note: once this indication is displayed, the meter
 will lockup. Change the battery to restart.

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• Press READ and "SIP" will appear during measurement.

• The instrument will then directly display the concentration of dis-

solved oxygen in mg/L.

INTERFERENCES

Interferences may be caused by reducing and oxidizing materials.
NaN

3  

(Sodium azide) is added to prevent interferences from NO

2

–

.

V

ON

OFF

9V

To prolong the battery life, switch your meter off after use. The meter
also has an auto-shut off feature that will turn itself off after 10
minutes of non-use.
A "V" on the LCD indicates low voltage and, when
it appears, the battery should be replaced.
If the battery is not replaced, "-BA-" is displayed
soon afterwards. This is to prevent erroneous read-
ings due to low voltage. The meter will then
lockup and will not accept any commands. The
display will also go blank.
Battery replacement must only take place in a non-hazardous area
using a 9 V alkaline battery.
Simply slide off the battery cover on the
back of the meter. Detach the battery from
the terminals and attach a fresh 9 V
battery while paying attention to the cor-
rect polarity. Replace the battery and the
cover.
The meter will turn on automatically when a new
battery is connected. You can turn it off by pressing
ON/OFF.