Hach 2100Qis, Руководство пользователя

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• Measure samples immediately to prevent temperature changes and
settling. Before a measurement is taken, always make sure that the
sample is homogeneous throughout.
• Avoid sample dilution when possible.
• Avoid operation in direct sunlight.
Turbidity measurement procedure
Note: Before a measurement is taken, always make sure that the sample is
homogeneous throughout.
1. Collect a
representative sample
in a clean container. Fill
a sample cell to the line
(about 15 mL). Take
care to handle the
sample cell by the top.
Cap the cell.
2. Wipe the cell with a
soft, lint-free cloth to
remove water spots and
fingerprints.
3. Apply a thin film of
silicone oil. Wipe with a
soft cloth to obtain an
even film over the entire
surface (
Apply silicone
oil to a sample cell
on page 17).
4. Push the Power key
to turn the meter on.
Place the instrument on
a flat, sturdy surface.
Note: Do not hold the
instrument while
making measurements.
5. Gently invert and
then insert the sample
cell in the instrument
cell compartment so the
diamond or orientation
mark aligns with the
raised orientation mark
in front of the cell
compartment. Close the
lid.
6. Push Read . The
display shows
Stabilizing then the
turbidity in NTU (FNU).
The result is shown and
stored automatically.
Additional information is
available on the
manufacturer's website.
Data management
About stored data
The following types of data are stored in the data log:
• Reading Log: stores automatically each time a sample reading is
taken (500 records).
• Calibration Log: stores only when Store is selected at the end of a
calibration (25 records).
• Verify Cal Log: stores only after Done is selected at the end of a
verification calibration (250 records).
When the data log becomes full, the oldest data point is deleted when
more data is added to the log.
View data log
The data log contains Reading Log, Calibration Log and Verify Cal log.
All logs can be sorted by date.
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