wtw TetraCon 700, Руководство по эксплуатации

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Measuring / Operation TetraCon 700
28 ba55320e05 11/2009
4 Measuring / Operation
4.1 Measuring
Warning
Contact with the sample can lead to danger to the user!
Depending on the type of sample, suitable protective measures
must be taken (protective clothing, protective goggles, etc.).
Minimum immersion
depth
Please observe the minimum immersion depth of the conductivity
measuring cell (> 30 mm).
Spacing Please make sure that at the electrodes, the conductivity measuring
cell is surrounded by a clearance of at least 5 cm at the base and sides
(boundary fields).
Measuring at a narrow
location
If the clearance is less than that, the cell constant changes. This leads
to inexact measurement results. Normally, measuring transmitters
have a correction function that can compensate for this influence. This
procedure determines a new cell constant for the system consisting of
conductivity measuring cell + measuring environment. For more
detailed information, refer to section 4.2 A
PPLICATION
-
DEPENDENT
SETTINGS
.
Note
Normally, the conductivity measuring cell does not age. Special
measuring media (e.g. strong acids and bases, organic solvents) or
temperatures that are too high may considerably reduce its lifetime or
lead to damage. No warranty claims can be made for mechanical
damage or any failure caused by these types of measuring media.
> 30 mm
TetraCon 700
> 50 mm
> 50 mm