Emerson Rosemount 702 Quick Start Manual page 12

Quick Start Guide
WARNING!
When installing remote mount antennas for the Rosemount 702 Transmitter,
always use established safety procedures to avoid falling or contact with
high-power electrical lines.
Install remote antenna components for the Rosemount 702 Transmitter in
compliance with local and national electrical codes and use best practices for
lightning protection.
Before installing, consult with the local area electrical inspector, electrical
officer, and work area supervisor.
The Rosemount 702 Transmitter remote antenna option is specifically
engineered to provide installation flexibility while optimizing wireless
performance and local spectrum approvals. To maintain wireless
performance and avoid non-compliance with spectrum regulations, do not
change the length of cable or the antenna type.
If the supplied remote mount antenna kit is not installed per these
instructions, Emerson is not responsible for wireless performance or non-
compliance with spectrum regulations.
Procedure
1. Mount the antenna on a 1.5 to 2-in. pipe mast using the supplied
mounting equipment.
2. Connect the lightning arrestor directly to the top of the Rosemount 702
Transmitter.
3. Install the grounding lug, lock washer, and nut on top of lightning
arrestor.
4. Connect the antenna to the lightning arrestor using the supplied
LMR-400 coaxial cable ensuring the drip loop is not closer than 1 ft. (0.3
m) from the lightning arrestor.
5. Use the coaxial sealant to seal each connection between the wireless field
device, lightning arrestor, cable, and antenna.
Note
The remote mount antenna kit includes coaxial sealant for
weatherproofing the cable connections for the lightning arrestor,
antenna, and Rosemount 702 Transmitter. Coaxial sealant must be
applied to guarantee performance of the wireless field network. See
Figure 2‐4
12
for details on how to apply coaxial sealant.
Rosemount 702 Wireless Discrete Transmitter
April 2018