VWR International 89231-656, Руководство пользователя

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Measurement procedure
1. Connect the probe
to the meter. Turn the
meter on.
Note: Before dissolved
oxygen measurement,
polarize the probe if the
probe is not polarized.
2. Rinse the probe with
deionized water. Blot
dry with a lint-free cloth.
3. Put the probe in the
sample and stir gently
at a constant rate to
prevent the formation of
a vortex.
4. Push Read . Select
the channel for the
parameter to be
measured if applicable.
5. Stir gently. The
display shows "Stable"
when the reading is
stable.
6. If the folder icon is
shown, push the folder
icon to save the data.
Note: Data is
automatically saved if
the folder icon is not
shown.
7. Do steps 2 – 6 again
for additional
measurements.
8. When
measurements are
done, prepare the
probe for storage. Refer
to
Storage
on page 12.
Maintenance
Clean the probe
N O T I C E
Do not rub or touch the tip of the pH or dissolved oxygen sensors.
Clean the probe when there is contamination on the sensor(s). Symptoms of contamination are:
• Readings are not accurate or consistent.
• The stabilization time is slow.
• A calibration error occurs.
• Contamination is visible on the probe (i.e., dirt).
To clean the dissolved oxygen probe of the multisensor probe, refer to Dissolved oxygen probe
(89231-660 multisensor) on page 11.
1. For general contaminants, rinse the probe with deionized water. Blot dry with a lint-free cloth.
2. For other contaminants:
a. Soak the pH and/or conductivity sensors of the probe in the applicable cleaning agent. Refer
to
Table 2 .
b. Rinse or soak the sensors for 1 minute in deionized water. Blot dry with a lint-free cloth.
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