wtw TetraCon 700-...Ex Series, Руководство по эксплуатации

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10 ba77055e01 05/2014
Measurement / operation TetraCon
®
700-...Ex
4 Measurement / operation
4.1 Measuring
Minimum immersion
depth
Please observe the minimum immersion depth of the conductivity
measuring cell (> 30 mm).
Spacing
Please make sure that the conductivity measuring cell is surrounded by
a free space of at least 5 cm at the base and sides (boundary fields)
during measurement.
Measuring at a narrow
location
If the free space 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
.
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.).
> 30 mm
TetraCon 700
> 50 mm
> 50 mm
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 war-
ranty claims can be made for mechanical damage or any
failure caused by these types of measuring media.