TI 01W03A51-01EN Aug. 07, 2015-00
FN110 must be installed in compliance with the following conditions. Otherwise, communication distances may
become shorter. In “pipe jungles”, dense with metal surfaces such as metal pipes and metal racks, the conditions
are somewhat different because it is difcult to secure a good line-of-sight in pipe jungles.
1) FN110 must be mounted where no obstacles around.
2) FN110 must be installed vertically.
3) FN110 must be at least 1 meter (3 feet) away from mounting piping or plumbing; in a pipe jungle, 30 centim-
eters (1 foot) away.
4) If the installation location is too close to walls and the above conditions cannot be met, use a remote antenna
cable to prevent obstacles from affecting wireless signals. Unlike other Yokogawa wireless eld devices,
FN110 does not suffer from signal attenuation by a remote antenna cable.
5) Install FN110 so that it has a good line-of-sight to other antennas in the communication area. Use a remote
antenna cable, if necessary. This is not essential in a pipe jungle because it is difcult to secure a good line-of-
sight only with a remote antenna cable.
6) When devices are installed at different heights, overlap their communication ranges in consideration of the
radiation patterns of respective antennas. FN110 can emit signals up to 45 degrees up or down from the
horizontal plane.
1.5 m or higher
1 m or more
1.5 m or higher
Horizontal
range
FN110
Vertical
range
45°
45°
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