Emerson FB1100, Instruction Manual

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Emerson FB1100 Flow Computer Instruction Manual
D301752X012
August 2020
28 Installation
Table 2-5: Typical Power Usage — Standard Power Mode at room temperature
Description
Power Usage
(mW) at 6Vdc
Power Usage
(mW) at 12Vdc
Power Usage
(mW) at 24Vdc
Base flow computer with integral
multivariable DP and pressure sensor and
temperature measurement for a single
meter run
209 224 265
Additional Load Options:
Display and backlight active 162 168 178
FBxWifi 189 185 200
FBxWifi and display active 204 207 221
DO active (1 Hz, 50:50 duty cycle, no
load)
21 23 20
2.10.3 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:
 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.
Refer to the product data sheet FB1100 Flow Computer (D301781X012) for information on the
additional power load of various options.
2.11 Connecting Power
Power can come from an external DC supply, a lead acid battery pack with a solar panel, or a
lithium battery pack.
Power connections are made through conduit fittings to the terminal plate. Remove the rear cover
for access to the terminal plate.
For solar power connections, refer to Section 2.12.4 .