YOKOGAWA FN110 Guide
Guidelines
for Using F9092EY
(FN110 Attachment)
TI 01W03A51-01EN
TI 01W03A51-01EN
© Copyright Aug. 2015 (KP)
1st Edition Aug. 2015 (KP)
Yokogawa Electric Corporation
2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 Japan
Tel.: 81-422-52-5634 Fax.: 81-422-52-9802
TI 01W03A51-01EN Aug. 07, 2015-00
This guideline explains how to improve communication quality of FN110 Field Wireless Communication Module
(hereafter simply referred to as FN110) by attaching F9092EY (FN110 Attachment). This guideline also explains
the effect of F9092EY.
• The contents of this manual are subject to change without prior notice if there are future performance and/
or function improvements.
• If any question arises or errors are found, or if any information is missing from this manual, please inform
the nearest Yokogawa Sales ofce.
• All rights reserved. No part of this manual may be reproduced in any from without Yokogawa’s written per-
mission.
• For details on installing eld wireless devices in a system with the YFGW410 eld wireless management
station and YFGW510 eld wireless access point, refer to Guidelines for Layout and Installation of Field
Wireless Devices (TI 01W01A51-12EN).
• For the usage of FN110, refer to FN110 User’s Manual (IM 01W03B01-01EN) and F9092EY User’s Manual
(IM 01W03B01-02EN).
1st August 2015 - New Issue
All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
TI 01W03A51-01EN Aug. 07, 2015-00
All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
To make full use of eld wireless devices, the optimal installation layout is required. FN110 is more sensitive to the
surrounding environment than other Yokogawa eld wireless devices because it has a built-in antenna.
F9092EY reduces the effects of the surrounding environment to the communication quality, making an installa-
tion easier. Therefore, F9092EY offers the same communication quality and allows the same installation point
optimization as other Yokogawa eld wireless devices.
• Using F9092EY is recommended.
• If communication quality has been satisfactory, F9092EY is not necessary.
• When communication quality is not good (i.e. PER is high), use of F9092EY may improve communication
quality.
• Even if the old FN110 does not use F9092EY, using F9092EY is recommended because the replacement
may affect the communication quality.
• If the old FN110 uses F9092EY, continue to use F9092EY.
• Using F9092EY is recommended. If a site survey is carried out using F9092EY, be sure to use F9092EY at
the actual installation.
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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TI 01W03A51-01EN Aug. 07, 2015-00
If the improvement by applying F9092EY is not satisfactory, further improvement is possible by adjusting the posi-
tion and angle of the bracket.
Follow the steps below for adjusting the bracket.
l
Rotate the bracket to nd the position with the lowest PER.
Adjust the bracket up or down.
2-inch pipe
Bracket
FN110
2-inch pipe
Bracket
FN110
l
Adjust the bracket right or left to nd the position with the lowest PER.
Rotate the bracket upside down.
Bracket
2-inch pipe
2-inch pipe
Bracket
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TI 01W03A51-01EN Aug. 07, 2015-00
The radiation pattern of FN110 without F9092EY has weaker areas compared to the ideal. If the communication
partner is located in the direction of a weaker area, the communication quality can be unsatisfactory, and can
result in additional time for the optimization of the installation position. Attaching F9092EY reduces the weaker
areas of radiation pattern and increases the chance of improving communication quality.
Figure 2 illustrates the radiation pattern of FN110 before and after F9092EY applied; using F9092EY smoothens
the radiation pattern.
0°
90°
180°
270°
0°
90°
180°
270°
45°
45°
45°
45°
Before
After
FN110
Radiation pattern
FN110
Radiation pattern
Horizontal
Vertical
Ideal radiation pattern
F9092EY is less effective in “pipe jungles”. In the pipe jungles, the effect of the refl ections from the surrounding
environment is dominant.
All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
TI 01W03A51-01EN Aug. 07, 2015-00
Attachment *1
Holder 2
Holder 1
Bolt (5 pieces)
*1: Attachment side cutout is to support remote FN110 placement, position does not matter for FN110 directly attached to adapters.
1 Attachment
Dimension: Ø50 mm × H24 mm
Material: 316 SST (t=1.0 mm)
Weight: 34 g
2 Holder 1
Dimension: W35 mm × D28.1 mm × H18 mm
Material: 316 SST (t=1.5 mm)
Weight: 12 g
3 Holder 2
Dimension: W35 mm × D1.5 mm × H18 mm
Material: 316 SST (t=1.5 mm)
Weight: 7 g
4 Bolt *2
Type: Hexagon socket head cap screw
Nominal diameter: M2.5
Thread length: 5 mm
Material: 316 SST or 316L SST
Weight: 0.4 g
Applicable standard:
JIS B 1176
and
ISO 4762-2004
*2: Bolts meeting the specication and the standards can be used for replacement.
All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
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