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Reference Manual
00809-0100-4832, Rev AA
October 2004
2-3
Rosemount 3095FC
9. Calibrate the 3095FC (see “Calibrate” on page 4-1).
10. Connect the 3095FC unit to any other external communication
devices or networks.
11. Place the meter run in service and monitor with Rosemount User
Interface Software for proper operation.
Solar Panels Solar panels generate electrical power for the 3095FC from solar radiation.
They are the optimal choice for locations where a DC voltage source is not
available. The size of solar panels required for a particular installation
depends on several factors, including the power consumption of all devices
connected to the solar array and the geographic location of the installation. An
8-volt solar panel can provide charging power for the backup batteries (see
“Solar Panel Sizing” for information on how to determine the appropriate
panel size required for an application).
An external solar panel typically mounts to the same 2-in. pipe that supports
the 3095FC (see “Mounting” on page 2-1). The panel wiring terminates at the
charge (CHG+ / CHG-) power terminals on the termination board.
NOTE:
Solar panel size may violate certain CSA Class I, Division 1 ratings. Use
approved 3095FC enclosure connectors for routing the power wiring.
The optional solar panel is adequate for support of API Chapter 21.1
compliant measurement and the retrieval of the historical logs once a day
using the internal communication methods.
Solar Panel Sizing
To determine solar panel output requirements, first determine the solar
insolation for the geographic area. The map in Figure 2-1 shows solar
insolation (in hours) for the United States during winter months. Contact an
Emerson Process Management representative for a map detailing a specific
geographic area.
Insolation (from map) = _____ hours
Next, calculate the amount of current required from the solar array per day
using the following equation. I
SF
is the system current requirement.
I
array
= [I
SF
(amps) ´ 24 (hrs)]/Insolation (hrs) = _____ amps
Finally, the number of solar panels can be determined using the following
equation:
Number of Panels = I
array
amps/(I
panel
amps/panel) = _____ panels
NOTE:
The “I
panel
“value varies depending on the type of solar panel installed. Refer
to the vendor's specifications for the solar panel being used.
The current accepted by the Rosemount 3095FC is limited by its charging
circuit to around 1 Amp. Therefore, it is not practical to install a solar array that