Emerson FB1100 - Connecting Power

FB1100 Flow Computer Instruction Manual
D301752X012
November 2023
30 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.