Notes On Battery Life; Connecting Power; Connecting Dc Power - Emerson FB2100 Instruction Manual

Emerson FB2100 Flow Computer Instruction Manual
D301783X012
March 2019

Notes on Battery Life

Battery life varies based on numerous factors including temperature, communication usage, and
various load options. To achieve the maximum battery life noted in the product data sheet requires
that you:
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2.10

Connecting Power

Power can come from an external DC supply or a lead acid battery pack with a solar panel.

Connecting DC Power

DANGER
EXPLOSION HAZARD: Never remove end cap(s) in a hazardous location. Removing end cap(s) in a
hazardous location could result in an explosion.
When power comes from an external DC supply, connect using the +DCIN and –DCIN terminals.
Use standard copper wire (#18 AWG minimum). The device supports both 12V and 24V power
supplies. It accepts DC voltage from 10.5 to 30V; the amount of power required varies depending
upon the options used.
Important
If your installation uses DC power for main power, do not wire battery power as a secondary (back
up) power source. Certification only allows a single main power source; wiring both sources will
void your certification.
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Limit use of the display, backlight, and FBxWifi options.
Limit communication activity.
Disable power to all I/O (except for the MV or static pressure sensor, or RTD). To do this, click
Configure > I/O Setup > I/O Configuration > Properties and select Disable for each I/O
module.
Figure 2-21. Module Power Control
Installation