Pepperl+Fuchs Pulscon LTC57, Руководство пользователя, Страница: 21 / 176

Pulscon LTC57 PROFIBUS PA
Mounting
2015
-0
3
21
Additional conditions
• When mounting in the open, a weather protection cover (1) may be installed to protect the
device against extreme weather conditions.
• In metallic vessels: Preferably do not mount the probe in the center of the vessel (2), as this
would lead to increased interference echoes.
If a central mounting position can not be avoided, it is crucial to perform an interference
echo suppression (mapping) after the commissioning of the device.
• Do not mount the probe in the filling curtain (3).
• Avoid buckling the rope probe during installation or operation (e. g. through product
movement against silo wall) by selecting a suitable mounting location.
• Check the probe regularly for defects.
Note!
With suspended rope probes (probe end not fixed at the bottom) the distance between the
probe rope and internal fittings in the tank must not fall below 300 mm (12 in) during the entire
process. A sporadic contact between the probe weight and the cone of the vessel, however,
does not influence the measurement as long as the dielectric constant of the medium is at least
DC = 1.8.
Note!
When mounting the electronics housing into a recess (e. g. in a concrete ceiling), observe a
minimum distance of 100 mm (4 in) between the cover of the terminal compartment/electronics
compartment and the wall. Otherwise the connection compartment/electronics compartment is
not accessible after installation.