FloBoss 103/104 Instruction Manual
2-4 Installation and Use Revised August-2017
o Group B – Atmosphere containing hydrogen, gases or vapors of
equivalent hazards.
o Group C – Atmosphere containing ethylene, gases, or vapors of
equivalent hazards.
o Group D – Atmosphere containing propane, gases, or vapors of
equivalent hazards.
For the FB100 to be approved for hazardous locations, install it
according to the National Electrical Code (NEC) Article 501, and any
local code requirements, if applicable.
When installing units in a hazardous area, make sure all installation
components selected are labeled for use in such areas. Installation and
maintenance must be performed only when the area is known to be non-
hazardous. Installation in a hazardous area could result in personal
injury or property damage.
2.3 Mounting
When choosing an installation site, be sure to check all clearances.
Provide adequate clearance for wiring and service. The optional LCD
should be visible and accessible for the on-site operator. When using a
solar panel, allow adequate clearance and do not obstruct the view of the
sun. Allow adequate clearance and an obstructed location for antennas
when using cellular phones or radios.
2.3.1 General Guidelines
You can mount the FB103 enclosure assembly directly to an orifice
plate using a 3- or 5-valve manifold or by using the standard Rosemount
2" pipe mounting kit with impulse tubing connecting the FloBoss 103 to
the meter run.
As shown in Figure 2-1, the DVS is factory-mounted directly on a flat
flange to the FB103 enclosure with four bolts. An adapter coupling
provides the mounting interface between the enclosure and the DVS
(see Chapter 4 for additional information).
If you order the FB103 without a DVS, the factory mounts an optional
blank plate to the flange. The blank plate mounts onto a pipe stand,
using the standard Rosemount 2-inch pipe mounting kit and 2 user-
supplied bolts (5/16 X 1 3/8) and lock washers.
You can mount the FB103 either of two ways:
▪ On a pipe stand:
The FloBoss 103 can mount to a 2-inch pipe stand. Ensure that the
pipe stand meets all weight requirements and installation conforms
to local building codes.
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