KROHNE OPTIWAVE 7300 C Handbook page 12

Handbook OPTIWAVE 7300 C
Threaded process connections
The simplest and most economic way is to mount the level meter directly onto the tank with a GAS or NPT-
threaded connection.
Use a 50 mm or 2" open-end wrench or similar to screw the device onto the tank process fitting.
Nozzles
To measure the level, the horn antenna must project out of the nozzle by at least 10 mm or 0.4".
If the nozzle is too long, use antenna extensions. Please note, however, that these are only available for the
DN 80 horn antenna.
Installation relative to other tank components
Factors that influence RADAR waves
Install the process connection far from the tank wall and protruding objects such as heating tubes, sudden
changes in tank cross section, tank wall reinforcements and beams, weld lines, dip-stick pipes and build up
of product.
These objects create false reflections that superimpose on the level measurement reflection.
OPTIWAVE 7300 C 12