Quick Start Guide
7
August 2014
Remote antenna (optional)
The remote antenna option provides flexibility for mounting the Rosemount 705
Totalizer based on wireless connectivity, lightning protection, and current work
practices.
The remote mount antenna kit includes coaxial sealant for the cable connections
for the lightning arrestor and antenna.
Find a location where the remote antenna has optimal wireless performance.
Ideally this will be 15-25 ft. (4.6 - 7.6 m) above the ground or 6 ft. (2 m) above
obstructions or major infrastructure. To install the remote antenna, use one of
the following procedures. The WN option is 25 ft. (7.6 m) and the WJ option is 10
ft. (3 m).
WN/WJ remote antenna option
1. Mount the antenna on a 1.5-2 in. pipe mast using the supplied mounting
equipment.
2. Connect the lightning arrestor directly to the top of the Rosemount 705
Totalizer.
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.
6. Ensure the mounting mast and lightning arrestor are grounded according to
local/national electrical code.
Note
Any spare lengths of coaxial cable should be placed in 12 in. (0.3 m) coils.
When installing remote mount antennas for the transmitter, always use established safety
procedures to avoid falling or contact with high-power electrical lines.
Install remote antenna components for the 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 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
Process Management is not responsible for wireless performance or non-compliance with
spectrum regulations.
00825-0200-4705_RevAA.fm Page 7 Monday, August 4, 2014 3:48 PM
