Siemens SIMATIC RF610T ATEX System Manual page 280

Antennas
6.4 SIMATIC RF640A
Figure 6-25
280
Pattern of the vertical plane of the antenna
Pattern of the horizontal plane of the antenna
The RF640A directional radiation pattern in the ETSI frequency band, polarization axis of
the transponder, and axis of symmetry of the antenna are parallel to each other.
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600