Emerson FB2100 Data Sheet
FB2100 Product Data Sheet
D301791X012 January 2021
Remote Automation Solutions
FB2100 Flow Computer
The FB2100 is a cost-effective low-power field mount flow
computer that measures and monitors oil and gas flow for a
differential or linear meter run.
The FB2100 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 FB2100 flow computer focuses on metering
applications where control is not required. The FB2100
provides a full audit trail, including enhanced history, alarm
and event logs. The I/O options can be as simple as a single
discrete output (DO) for driving an odorizer or can be
expanded to give two user configurable analog (AI or AO)
channels and two user configurable discrete (DI, DO or PI)
channels. The FB2100 includes power options for remote
sites and flexible communication capabilities for both
remote and SCADA connected sites.
The new flow computers also come with the latest
RosemountTM multivariable measurement sensor
technology, providing high accuracy differential pressure
and static pressure measurement with long term stability to
help measurement confidence and production efficiency.
Features
The FB2100 flow computer includes the following key
features:
▪ Increased measurement confidence and 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
FBxConnect™ configuration software tool
▪ Flexible design with configurable I/O power and
communication options to meet site needs
▪ Standard firmware supports global calculations for
orifice, cone, Venturi, nozzle, conditioning orifice,
turbine, PD, Auto-Adjust, and Coriolis
▪ Standard firmware supports Properties Calculations for
Natural Gas, Pure Gas, and Crude Oil
▪ Simple selection of engineering units suits local
requirements
▪ Global Hazardous Area Approvals – Class 1 Div2, ATEX &
IECEx nA
▪ Corrosion resistant aluminum and fiberglass enclosure
options include radio mounting bracket and battery box
for solar use
▪ 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 and
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.
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Firmware
The base firmware in the FB2100 flow computer measures
static pressure, differential pressure or pulse frequency, 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 7 2006 (pulsed turbine, PD, and ultrasonic)
▪ AGA 11 2013 (Coriolis pulses)
▪ Auto-Adjust™ meter
▪ AGA 9 (Multipath Ultrasonic)
▪ API 20.1 Liquid Allocation Measurement
▪ API 12.2 Calculation of Petroleum Quantities
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 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., Alt1, Alt2, and Alt3)
▪ GPA 2172 2009 (including saturated vapor calculation)
▪ ISO 6976 1995 (superior and inferior, incorporating
Technical Corrigendum 2 [1997] and 3 [1999])
▪ API 11.1 Temperature and Pressure correction for Crude
Oils
The firmware accepts gas density, base density, and specific
gravity form any of the following sources:
▪ Fixed value
▪ Periodic download from SCADA
▪ An external signal, such as analog input
▪ Calculated based on gas composition
The firmware includes the following flow rates and totals for
gas DP and gas linear meters:
▪ Indicated volume
▪ Corrected (standard) volume
▪ Mass
▪ Energy
▪ Integral Value (DP meter) or Pulse Totals (linear meter)
The firmware includes the following flow rates and totals for
API 12.2 and API 20.1 (low water):
▪ Indicated Volume / Mass
▪ Gross Volume
▪ Gross Standard Volume
▪ Net Standard Volume
▪ Water Volume
▪ Mass
▪ Flow time
▪ Pulses
The firmware includes the following flow rates and totals for
API 20.1 (high water):
▪ Indicated volume / mass
▪ Gross Volume
▪ Oil (Unshrunk and Theoretical Production)
▪ Natural Gas Liquid
▪ Flashed Gas
▪ Water (Uncorrected and Corrected Volume)
▪ Flow Time
▪ Pulses
Note: The firmware can accept a water cut from an online analyzer or from an off-line analyser corrected to
metering conditions.
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, differential pressure or
frequency as well as meter run flow rates. In addition to
these standard alarms, the FB2100 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 FB2100 features expanded and flexible history capability
to ensure measurement confidence and meet the increasing
demands for secure data.
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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 FB2100 supports either flow weighted or flow
dependent which can be linear or formulaic.
For gas meter averages, you can choose between flowdependent linear per API Chapter 21.1 (2013) or flowdependent formulaic, flow-weighted linear, or flowweighted formulaic averages per API Chapter 21.1 (1993).
Liquid allocation meter averages are flow-weighted averages
per API Chapter 21.2 (2000).
The FB2100 can store the following:
▪ Hourly logs 62 days
▪ Daily logs 12 months
▪ Weekly logs 12 months
▪ Monthly logs 60 months
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-compliant .cfx files through the
FBxConnect tool as well as calibration reports which contain
U.S. Bureau of Land Management specific parameters.
Power Options
You can power the FB2100 with an external DC power supply
or from an internal rechargeable battery linked to a solar
system. The internal battery can power the device for up to
45 days depending on the application.
Note: The internal battery option is available only with Class
1 Div 2.
Housing Options
The FB2100 has two housing options both suitable for
hazardous area installation. The corrosion resistant
Aluminum and the Fiberglass enclosures each protect the
electronics from physical damage and harsh environments.
The enclosures include a battery box to house a
rechargeable battery for use with solar systems and an
optional radio mounting bracket. The lockable door also
provides a viewing window for the optional LCD. The door
can also be fitted with an optional security switch, to
generate an alarm each time the door is opened.
Hazardous Area Certifications
The FB2100 has the following Global Hazardous Area
Approvals:
▪ North American certification for Class I Division 2 Groups
A, B, C and D.
▪ ATEX and IECEx certification for Ex nA, 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 FB2100 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).
Security
To secure your valuable process and data, the FB2100
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.
Monitor Screen
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DP Meter
Integral Pressure Sensor Options
The flow computer can be supplied with one of three sensor
options to suit your metering needs:
▪ Integral Multivariable Sensor (MVS) measuring both
Static Pressure and Differential Pressure (DP)
▪ Integral inline static pressure sensor
▪ NO integral pressure sensor – external transmitters are
used
The NO integral sensor option is typically used at locations
where regulations classify the location of the pressure
measurement sensor as either C1 D1 or ATEX/IEC Exd Zone
1. In this instance, the FB2100 without an integral sensor
can be mounted in the C1 D2 / Zone 2 area and be
connected via a serial port to a remote 4088B MVT
transmitter.
Enabled by superior sensor technology and engineered for
optimal flow performance, the integral pressure sensor on
the flow computer delivers unparalleled accuracy, over a
wide range of operating conditions, and industry leading
stability to ensure you meet standards and regulations.
Pressure sensors on the flow computer can measure DPs of
up to 1000” of water / 2500 mBar and static pressures up to
4000 psi / 275 Bar in either gauge or absolute with
accuracies up to 0.075%.
Temperature Input (RTD/PRT)
With industry leading measurement accuracy the
temperature measurement of the FB2100 ensures that you
minimize your measurement uncertainty in all operating
conditions. The input accepts 2-, 3-, or 4- 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 FB2100 flow computer’s superior static 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.
Inputs and Outputs
Base I/O
In addition to the integral pressure sensor, the FB2100
includes the following I/O points in the base unit:
▪ One discrete output (DO)
▪ One RTD/PRT (2-, 3-, or 4-wire)
The DO can be software configured as scaled pulse output,
latched, toggled, momentary, or timed duration output. The
solid state, normally open switch is rated at 500mA and is
often used to drive an odorizer.
Expansion I/O
The FB2100 can also be supplied with the following
expanded I/O:
▪ Integral pressure sensor
▪ Two analog channels – individually software selectable as
analog inputs (AI) or analog outputs (AO)
▪ Two discrete channels – individually software selectable
as either discreet inputs (DI), discrete outputs (AO) or
pulsed inputs (PI)
▪ One PRT/RTD (2-, 3-, or 4-wire)
▪ Two optional relays allow for additional loads up to
30Vdc at 6A. 24 Vdc power is required to energize the
relays.
Note: This option is available only with Class 1 Div 2
approval.
Analog Inputs (AI) are individually software configurable for
either 4 to 20mA or 1 to 5 Vdc operation.
To keep measurement uncertainty at a minimum when
external transmitters are being used, both the AI and AO
channels have industry-leading measurement accuracy with
an excellent performance over a wide ambient temperature
range.
Each Discrete Input (DI) channel can also be software
configured to function as a latched DI.
The Discrete Output (DO) channels are solid-state, normally
open switches rated at 500 mA, enough to directly drive
most samplers. Each channel can be software configured as
a latched, toggled, momentary, timed duration output
(TDO), or scaled pulse output.
The PI channels are most commonly used to interface with
turbine meters, Coriolis meters, ultrasonic meters, and
Positive Displacement (PD) meters. The high-speed input
supports signal up to 10.5 KHz.
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Communications
The FB2100 has three user selectable serial communications
ports with support for RS-232, RS-422, and/or RS-485
operation and one optional port that provides FBxWifi
(802.11 b/g) communications using DNP3 protocol:
▪ 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 (802.11 b/g) communications (optional)
The FB2100 supports DNP3, Modbus slave (ASCII and RTU),
BSAP and ROC protocols on all serial ports.
Mounting Options
The FB2100 supports either direct mount to a manifold on
the pipeline, simple wall mounting or mounted on a twoinch pipe with the stainless steel pipe mounting kit.
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FB2100 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 variablesand 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.
Can communicate to 4088B transmitters
COM4
FBxWifi (optional) (802.11 b/g)
Protocols
Serial ports support DNP3, Modbus slave (ASCII or RTU), BSAP, and ROC.
Wi-Fi supports DNP3
DNP3 includes level 3 protocol subset
Base I/O
The base FB2100 includes the following I/O:
▪ 1 multivariable or static pressure sensor
▪ 1 process temperature input (PRT/RTD)
▪ 1 discrete output (DO)
Expansion I/O (optional)
When the FB2100 is supplied with the expanded I/O option, the following options are available:
▪ 2 channels that are individually software selectable as either analog inputs or analog outputs
▪ 2 channels that are individually software selectable as either discrete inputs, discrete outputs, or pulse inputs
▪ 1 process temperature input (RTD/PRT)
Temperature Input
(RTD/PRT)
Type
2-wire, 3-wire, or 4-wire (software selectable)
Measuring Range
-200 to +850 °C (-328 to 1562 °F)
Reference
Accuracy
+/- 0.07 °C from -30 to 60 °C (±0.126 °F from -22 to +140 °F)
+/- 0.1 °C from -60 to 200 °C (±0.18 °F from -76 to 392 °F)
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