KROHNE OPTISWITCH 3300 C Handbook page 13

OPTISWITCH 3300 C • Transistor (NPN/PNP)
The tuning fork must be mounted in a way that takes the arrangement
of the filling and emptying apertures into account.
To compensate measurement errors caused by the material cone in
cylindrical vessels, the sensor must be mounted at a distance of d/6
from the vessel wall.
d
6
d
Fig. 4: Filling and emptying centred
4 Mounting
d
6
d
13