Siemens SIMATIC RF610T ATEX System Manual page 262

Antennas
6.3 SIMATIC RF620A
D D irectional radiation pattern ETSI on non-metallic mounting surface
Figure 6-18
262
Pattern of the vertical plane of the antenna
Pattern of the horizontal plane of the antenna
Directional radiation pattern RF620A ETSI on non-metallic mounting surface
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600