4 Mounting
Tight installation of the
plastic horn antenna
Polarisation
12
Fig. 3: Adjustment of the angle of inclination
Fig. 4: Turning by fastening in the centre
4.4
Mounting instructions
For tight installation of the version with plastic horn antenna with com-
pression or adapter flange, the following conditions must be fulfilled:
1. Use suitable flat seal, e.g. of EPDM with Shore hardness 25 or 50
2. Make sure the number of flange screws corresponds to the num-
ber of flange holes
3. Tighten all screws with the torque stated in the technical data
The emitted radar impulses of the radar sensor are electromagnetic
waves. The polarisation is the direction of the electrical wave compo-
nent. By turning the instrument in the connection flange or mounting
boss, the polarisation can be used to reduce the effects of false
echoes.
The position of the polarisation is marked on the process fitting of the
instrument.
LEVEL TRANSMITTER 8136 • 4 ... 20 mA/HART - two-wire