Emerson FB1100 Data Sheet

FB1100 Product Data Sheet

D301781X012 January 2021

Remote Automation Solutions

FB1100 Flow Computer

The FB1100 is a cost-effective, low-power explosion-proof
flow computer that measures and monitors gas flow for a
single differential pressure meter run. As well as bringing a
new level of measurement confidence, the FB1100 can run
independently without external power, for up to one year,
making it an ideal replacement for chart recorders.

The FB1100 is part of Emerson’s new field mount flow
computer family that delivers a convenient approach to
remote oil and gas sites by addressing challenges to power,
safety, measurement reliability, and accuracy.

Designed for simple configuration and ease of use, the cost
effective FB1100 flow computer is focused on metering
applications where control is not required.

The FB1100 provides a full audit trail, including enhanced
history, alarm and event logs as well as providing a discrete
output that can be used to drive an odorizer.

The FB1100 includes power options for the most remote
sites and has flexible communication capabilities, including
FBxWifi™, for both remote and networked sites.

The new flow computers also come with the latest

Rosemount™ multivariable measurement sensor

technology, providing high accuracy differential pressure
and static pressure measurement with long term stability to
help improve measurement confidence and production
efficiency.

Features

The FB1100 flow computer includes the following key
features:

▪ Increased measurement confidence, reduced

measurement uncertainty

▪ Measurement and I/O capability focused on metering

applications

▪ Industry leading differential and static pressure

measurement including 5-year stability

▪ High accuracy temperature measurement including

curve matching via the Callendar-Van Dusen equation

▪ Reduced need to re-calibrate resulting in less time spent

on site

▪ Simplified configuration and set-up with the

FBxConnectTM configuration software tool

▪ Cost-effective alternative to chart recorders
▪ Flexible design with power and communication options

to meet site needs

▪ Standard firmware supports global calculations for DP

metering including orifice, cone, Venturi, nozzle, and
conditioning orifice

▪ Standard firmware supports Properties Calculations for

Natural Gas and Pure Gas

▪ Simple selection of engineering units to suit local

requirements

▪ Global Hazardous Area Approvals – Class 1 Div 1 & 2,

ATEX & IEC Ex d & Ex nA

▪ FBxWifi allows secure local wireless access from safe area
▪ Ease of integration with support for Modbus, ROC, BSAP

and DNP3 protocols

▪ Enhanced security helps prevent unauthorized access
▪ Enhanced alarming and historical data storage, improved

audit trail

▪ Superior performance gives better control of your

operations and maximizes profits

▪ API 21.1 compliant

FBxWifi™

The optional FBxWifi communications enables you to
connect your laptop or tablet to the flow computer through
a secure wireless connection. Once connected wirelessly,
you can use FBxConnect configuration software to view
process values, edit configuration parameters, and collect
logs stored in the flow computer – all from within the safe
area.

FB1100

Aluminum Housing

Stainless Steel Housing

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Power Options

The FB1100 has the following power options:

▪ External DC supply
▪ External DC supply with internal battery back-up
▪ Solar panel charging internal battery, FB1100 has

internal solar regulator

▪ Autonomous mode with internal battery powering the

FB1100 for 12 months

In "autonomous mode" the FB1100 runs from a single
battery for up to 12 months without recharging. The 12­month battery life is based on the FB1100 running in low
power mode on a typical remote application with a local
collection of history and the use of the optional display for
up to 30 minutes per month. This option is an ideal
replacement for chart recorders, significantly reducing
measurement uncertainty and providing a complete
electronic audit trail. The 12-month battery life is achieved
under an ambient temperature of 25˚C/77˚F; refer to the
table on page 10.

The solar powered option provides up to 25 days of
autonomous operation without charge.

Internal battery option is not available with ATEX and IEC
approvals.

Firmware

The base firmware in the FB1100 flow computer measures
static pressure, differential pressure, and temperature for a
single meter run. The flow computer performs gas flow
calculations based on those inputs in either U.S., metric, or
other user-selectable units based on the calculation type.

The firmware supports the following flow calculations:

▪ AGA 3 1992/2013 (volume, mass/density, and

mass/relative density)

▪ ISO 5167 1991/1998/2003 (orifice, Venturi, and nozzle)
▪ Rosemount 405C Compact Orifice and 1595

Conditioning Orifice Plate

▪ McCrometer V-Cone® and Wafer Cone®
▪ NUFLO™ Cone
▪ AGA 9 (Multipath Ultrasonic)

The firmware supports the following property calculations:

▪ AGA 8 1994 (Detailed, Gross 1 and Gross 2)
▪ AGA8 2017 Part 1 and Part 2 (GERG 2008)

Note: AGA8 Part 2 / GERG 2008 provides support for the

following pure gases: Nitrogen, Carbon Dioxide,
Hydrogen, Oxygen, Carbon Monoxide, Water
Vapor, Hydrogen Sulfide, Helium, and Argon

▪ Speed of Sound calculated via AGA 10 and AGA 8 2017

Part 2

▪ NX-19 1962, MOD, VDI/VDE 2040
▪ ISO 12213 2009 (parts 2 and 3)
▪ SGERG 1991 (Std., Alt 1, Alt 2 and Alt 3)
▪ GPA 2172 2009 (including saturated vapor calculation)

▪ ISO 6976 1995 (superior and inferior, incorporating

Technical Corrigendum 2 [1997] and 3 [1999])

Regarding gas composition, the flow computer can:

▪ Receive updated gas composition from SCADA;
▪ Receive manual updates for gas composition through

FBxConnect; or

▪ Use a fixed gas composition

The firmware includes the following flow rates and totals:

▪ Indicated volume
▪ Corrected (standard) volume
▪ Mass
▪ Energy

The firmware supports a fallback mode when a process
variable's value is questionable. The fallback options can be
one of the following:

▪ Use last good value
▪ Use a fixed fallback value

Alarms and Events

The flow computer supports extensive alarming capability to
enhance operational efficiency and improve the audit trail.
Alarms are pre-allocated to meter runs for standard values
such as pressure, temperature, and differential pressure as
well as meter run flow rates. In addition to these standard
alarms, the FB1100 provides a number of user alarms that
you can assign to other database parameters simply by

“filling in the blanks” in user alarm templates in the

FBxConnect configuration tool. Storage is provided for the
most recent 1000 alarms in the alarm log.

The event log stores the significant events during operation
and can be configured to either store all events in a single log
of 2000 events or the user can select to store the
metrology/legal events in a separate log from the
operational events. With the latter option the event log
capacity is 1000 metrology events and 1000 operation
events.

History

The FB1100 features expanded and flexible history capability
to ensure measurement confidence and meet the increasing
demands for secure data.

The flow computer has four standard periodic logs available
providing hourly, daily, weekly, and monthly history. These
logs can contain up to 35 variables including flow weighted
average data, totals, and gas composition. For averaging,
the FB1100 supports either flow weighted or flow
dependent which can be linear or formulaic.

The FB1100 can store the following:

▪ Hourly logs 62 days
▪ Daily logs 12 months
▪ Weekly logs 12 months
▪ Monthly logs 60 months

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The flow computer also supports two user periodic logs, the
duration or period of each is user selectable between 1
minute and 200 hours. The first user periodic logs include 10
parameters over 4,000 periods and the second contains 20
parameters over 500 periods.

The flow computer with FBxConnect provides pre-formatted
EFM reports for hours and days. The format of the reports
can be .csv, .pdf or secure pdf.

In addition to the above reports, the flow computers can
produce FLOWCAL-complaint. cfx files through the
FBxConnect tool as well as calibration reports which contain
U.S. Bureau of Land Management specific parameters.

Housing

The FB1100 includes an explosion-proof and flame-proof
enclosure made of die-cast aluminum or stainless steel that
can operate in an unprotected outdoor environment. Wiring
for I/O, communications, and power enters the enclosure
through the four conduit fittings. The front end cap provides
a viewing window for the optional LCD. The rear end cap
provides access to the screw terminals. The end caps can
also be fitted with wire security seals.

Hazardous Area Certifications

The FB1100 has the following Global Hazardous Area
Approvals:

▪ North American certification for Class I Division 1 Groups

C and D (explosion proof) and Class I Division 2 Groups A,
B, C and D

▪ ATEX and IECEx certification for Exd Zone 1 (flame proof)

and Exn Zone 2 hazardous locations

Configuration Software

Emerson’s new FBxConnect tool is a Microsoft® Windows®-
based tool that enables you to easily monitor, configure,
service, and calibrate the FB1100 flow computer. Designed
for ease of use, FBxConnect provides at-a-glance monitoring,
quick access to commonly performed tasks, and a guided
configuration process to quickly get your measurement up
and running.

The wizard-driven approach simplifies configuration and
ensures that you only need to enter the required data once.
Whether you are an experienced engineer or a new
technician, you can be confident configuration is done
correctly the first time.

FBxConnect runs on a Windows PC or tablet. You connect
securely to the flow computer using one of its serial ports or
optionally through the FBxWifi wireless connection. For
more information, refer to product data sheet FBxConnect
(D301789X012).

Multivariable Sensor

Enabled by superior sensor technology and engineered for
optimal flow performance, the MVS on the FB1100 delivers
unparalleled accuracy over a wide range of operating

conditions and industry leading stability. Pressure inputs on
the sensor are used to measure differential (up to 1000” of
water) and static (absolute or gauge) pressure with an
operating range of up to 3600 psi and accuracies of up to

0.075%.

Monitor Screen

DP Meter

Temperature Input (RTD/PRT)

With industry-leading measurement accuracy, the
temperature measurement of the FB1100 will ensure that
you minimize your measurement uncertainty in all operating
conditions. The input accepts two-, three-, or four-wire
connections reducing any field wiring induced errors and
also supports sensor curve matching utilizing the optional
Callendar Van-Dusen constants to define the unique
characteristics of the RTD/PRT to further improve process
temperature measurement uncertainty.

The FB1100 flow computer’s superior static pressure,

differential pressure (DP) and temperature measurement
performance and stability ensures you meet standards and
regulations so you can avoid fines, penalties, leaseholder
disputes, and lost revenue. With the advanced

measurement, you’re getting the most accurate flow

reading to ensure you meet your company and regulatory
performance requirements.

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Discrete Output

The FB1100 includes a single discrete output (DO) which
provides the ability to control various discrete output field
devices. The DO channel is a solid-state, normally open
switch rated at 500 mA, enough to directly drive most
odorizers or samplers. The DO channel can be software
configured as a latched, toggled, momentary, timed
duration output (TDO), or scaled pulse output.

Communications

The FB1100 has three serial communications ports with
support for RS-232, RS-422, and/or RS-485 operation, and
one port that supports optional FBxWifi (802.11 b/g)
communications using DNP3 protocol.

▪ COM1 – 4-wire serial communications. Software

selectable for EIA-232 (RS-232), EIA-422 (RS-422), or EIA­485 (RS-485) operation.

▪ COM2 – 2-wire serial communications. Software

selectable for EIA-232 (RS-232) or EIA-485 (RS-485)
operation.

▪ COM3 – 2-wire serial communications. Software

selectable for EIA-232 (RS-232) or EIA-485 (RS-485)
operation.

▪ COM4 –FBxWifi (802.11 b/g) communications

(optional).

The FB1100 supports DNP3, Modbus slave (ASCII and RTU),
BSAP, and ROC protocols on the three serial ports and DNP3
on the FBxWifi port.

Mounting Options

The flow computer supports either direct mount to a
manifold on the pipeline or indirect mounting on a two-inch
pipe or pole. A mounting bracket and bolts are available for
use with a traditional flange or coplanar flange.

Security

To secure your valuable process and data, the FB1100
provides multi-level role-based access, user account
authentication, and password encryption.

The system administrator can set a minimum password
length (up to 20 characters) that accommodates lower case,
upper case, numbers, and symbols, as well as configure a
user lock-out feature that locks out invalid users after a
defined number of failed login attempts.

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FB1100 Flow Computer

CPU Module

Processor

The central processing unit (CPU) of the flow computer is an NXP® Kinetis® K61 series CPU with an
ARM® Cortex® M4 processor.

Memory

SRAM

8 MB, holds current states of all variables and historical archives.

Flash

128 MB, holds firmware image and configuration files.

Clock

Type

Real-time clock

Accuracy

0 °C to 40 °C

60 seconds/year

−40 °C to 80 °C

110 seconds/year

Watchdog Timer

1175 milliseconds

Diagnostics

Battery voltage monitor, external voltage monitor, SRAM battery status

Communications

Ports

COM1

4-wire serial communications.
Software selectable for RS-232, RS-422, or RS-485 operation.

COM2

2-wire serial communications.
Software selectable for RS-232 or RS-485 operation.

COM3

2-wire serial communications.
Software selectable for RS-232 or RS-485 operation.

COM4

FBxWifi (optional) 802.11 b/g

Protocols

Serial ports support DNP3, Modbus slave (ASCII and RTU), BSAP, and ROC
Wi-Fi supports DNP3
DNP3 includes level 3 protocol subset

Inputs/Outputs

The base FB1100 includes the following I/O:

▪ 1 multivariable sensor, measures differential pressure and static pressure
▪ 1 process temperature input (PRT/RTD)
▪ 1 discrete output (DO)

The I/O of the FB1100 is focused on a standard metering application with a DO that is typically used to drive an odorizer.

Multivariable Sensor

The standard Rosemount™ MultiVariable™ sensor has a stainless steel coplanar flange, a stainless steel (316L) diaphragm, and
silicone fill fluid. Optional versions include:

▪ A Hastelloy

®

C-276 sensor diaphragm, a Hastelloy C-276 coplanar flange, with either NACE MRO175/ISO 15156 or MRO103

certification

▪ Stainless steel traditional flange, a stainless steel diaphragm, and silicon fill fluid.

Differential Pressure
Input

DP Range 1

−25 to 25 Inches H2O (−62.16 to 62.16 mbar)

Reference
Accuracy

± 0.1% span;
For spans less than 5:1, ± (0.025+0.015 [USL/Span]) % span

Stability

±0.2% USL for 1 year