Emerson FloBoss 103 Manual De Instrucciones página 5

2. Find a suitable location for the FloBoss 103. 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. See
3. Mounting of the FloBoss 103 can be accomplished
using one of the following methods:
Pipestand mounted to a 2-inch pipestand. Use the
▪
standard Rosemount 2" (50mm NB) pipe mounting kit
(with impulse tubing connecting the FloBoss 103 to the
meter run). Ensure that the pipestand meets all weight
requirements and installation conforms to local building
codes. See Figure 9.
Note: The Rosemount pipe mounting kit is not suitable for
the stainless steel housing. Customers must provide
an appropriate mounting.
Orifice Plate mounted to an orifice plate via a 3-or 5-
▪
valve manifold. See Figure
At the factory, the Dual-Variable Sensor's connector is
mounted to a coupler, which is mounted directly on a flat
flange to the FloBoss enclosure with a 4-bolt pattern.
The optional blank plate is available when the FloBoss 103
is ordered without a DVS sensor. At the factory, the blank
plate is mounted directly on a flat flange to the FloBoss
enclosure with a 4-bolt pattern. The blank plate mounts
onto a pipestand, using the standard Rosemount 2-inch
pipe mounting kit and 2 user-supplied bolts (5/16 X 1 3/8)
and lock washers.
With either mounting method, the pressure inputs must
be piped to the process connections on the DVS sensor.
Both the static and differential pressures are piped to
female ¼-18 NPT connections on the base of the DVS
sensor. For the manifold startup/shutdown procedure, refer to the FloBoss 103 and 104 Flow Manager Instruction
Manual (Part D301153X012).
The DVS sensor is an upstream device, meaning that the
static pressure line normally connects to the high pressure
side (labeled H on the sensor body).
4. The FloBoss must be properly grounded. The FloBoss
103 has one grounding screw outside the enclosure and
two grounding screws inside the enclosure. See
www.Emerson.com/RemoteAutomation
Figure 8.
9.
Figure 3
Safe Use Instructions – Emerson FloBoss 103
B
A Internal Grounding Screws
B External Grounding Screw
Figure 3. Back End of FloBoss 103 (with Termination Board)
Proper grounding of the FloBoss 103 helps to reduce the
effects of electrical noise on the unit's operation and
protects against lightning. The FloBoss provides lightning
protection for built-in field wiring inputs and outputs.
Install a surge protection device at the service disconnect on DC voltage source systems to protect against lightning and
power surges for the installed equipment. You may also
consider a telephone surge protector for the optional dial-up
modem communications card.
All earth grounds must have an earth to ground rod or grid
impedance of 25 ohms or less, as measured with a ground
system tester. The grounding conductor should have a
resistance of 1 ohm or less between the FloBoss enclosure
ground and the earth ground rod or grid.
If the pipeline to earth impedance is greater than 2 ohms,
the FloBoss installation should be electrically isolated and
a ground rod or grid grounding system installed.
The recommended cable for I/O signal wiring is an
insulated, shielded, twisted-pair. The twisted pair and the
shielding minimize signal errors caused by EMI
(electromagnetic interference), RFI (radio frequency
interference), and transients.
5. The FloBoss must be connected to power, I/O devices,
and communication devices. The external connections, or
field terminals, are all located on the termination board.
The terminal block accepts wires up to 1.29 mm (16 AWG)
in size.
Part D301194X012
February 2018
A
3