Fox Model FT2A Thermal Gas Mass Flow Meter

The Fox Model FT2A, winner of both the 2014 Flow Control Innovation Award and the Processing Breakthrough Product Award, is the most widely versatile Thermal Gas Mass Flow Meter on the market today.

The Model FT2A has a large selection of communication protocol options available intrinsically (without any other equipment). Options include: BACnet MS/TP, RS485 Modbus RTU, Profibus-DP, DeviceNet, or Ethernet Modbus TCP.

The Model FT2A measures gas flow rate in standard units (SCFM, NM³/hr, LBS/HR, KG/HR & many more) without the need for temperature and pressure compensation. See the Features/Benefits section below to explore all that the FT2A can offer your application.

A free software tool – FT2A View™ - is available for the Model FT2A that allows the user to connect to and configure the FT2A using a PC or laptop.

The free FT2A View™ software from Fox is a great way to connect your PC or laptop to the FT2A in order to access the meter settings in a quick and easy way. This software offers:

  • Quick access to all configuration parameters using pop-up windows and pull down menus
  • Selection of measurement units, flow and temperature ranges, alarm settings, and more
  • Data Logging to a Microsoft® Excel spreadsheet
  • Display of alarm codes
  • Storage of meter configurations to a file that can be archived
  • View raw data that can be used to diagnose or troubleshoot your meter

Note: For FT2A View™ software to function properly, please be sure to have a working version of Microsoft® Office installed on the PC before installing FT2A View™.

USB Driver and the Fox FT2A View™ Software
A USB driver is needed for FT2A View™ to run. If the USB drive does not install automatically, you will need to download it by following this link. Instructions are included on how to install it correctly.


More Info

Common Features for Fox Model FT2A Flow Meter:

  • Measures process gas flow rate/total and temperature
  • Standard USB port, optional BACnet MS/TP, RS485 Modbus, Profibus-DP, DeviceNet, or Ethernet Modbus TCP
  • Standard on-board display and configuration panel
  • Equipped with the Power Pro™ thermal mass flow sensor
  • One discrete output is programmable for either pulse (for totalizing flow) or alarms
  • One discrete input to reset total or select a different calibration on 2 gas curves
  • 4-20mA output proportional to mass flow rate
  • FM and FMc approved for Class I, II, III, Div 2, Groups A, B, C, D, E, F, G, T4 hazardous locations; NEMA 4X approved; Remote NEMA 4X electronics enclosure with explosion proof sensor j-box.
  • CE Approved
  • NIST traceable calibration
  • Wide measurement range
  • 1% R + 0.2% FS flow accuracy
  • 24 VDC or optional 100 to 240VAC in local or remote enclosures

FT2A Flow Meter Specs

Technical Specifications
Fox Model FT2A Thermal Mass Flow Meter & Temperature Transmitter
Performance Specs
Type Insertion Inline
Flow Accuracy: ± 1% of reading ± 0.2% of full scale.
15 diameters of straight, unobstructed pipe upstream and 10 downstream.
± 1% of reading ± 0.2% of full scale.
8 diameters of straight, unobstructed pipe upstream and 4 downstream.
Flow Repeatability: ± 0.2% of full scale
Flow Response Time: 0.9 seconds (one time constant)
Temperature Accuracy: ± 1.8°F (± 1.0°C) -40 to 250°F (-40 to 121°C); ± 3.6°F (± 2.0°C), 250 to 650°F (121 to 343°C); 60 SFPM minimum.
Calibration: Factory Calibration to NIST-traceable standards
Operating Specs
Type Insertion Inline
Flow Units (field selectable): SCFM, SCFH, NMPS, NM3/M, NM3/H, NM3/D, NLPS, NLPM, NLPH, MCFD, MSCFD, SCFD, MMSCFD, MMSCFM, SMPS, SM3/H, LB/S, LB/M, LB/H, LB/D, KG/S, KG/M, KG/H, SLPM, SFPM, MT/H, SM3/M
Flow Rates: 15 to 60,000 SFPM (0.07 to 280 NMPS) - Air at 70°F (20°C) & 1 ATM
Turndown: up to 1000:1; 100:1 typical
Flow Ranges:
Pipe Size SCFM NM³/HR
1.5" (40mm) 0 - 450 0 - 760
2" (50mm) 0 - 750 0 - 1,280
3" (80mm) 0 - 1,600 0 - 2,720
4" (100mm) 0 - 5,300 0 - 8,360
6" (150mm) 0 - 6,400 0 - 10,870
8" (200mm) 0 - 11,100 0 - 18,860
10" (250mm) 0 - 18,200 0 - 30,920
12" (300mm) 0 - 24,900 0 - 42,300
Pipe Size SCFM NM³/HR
0.25" 0 - 20 0 - 32
0.5" 0 - 68 0 - 107
0.75" 0 - 120 0 - 204
1" 0 - 192 0 - 326
1.25" 0 - 332 0 - 564
1.5" 0 - 450 0 - 760
2" 0 - 750 0 - 1,280
2.5" 0 - 1,090 0 - 1,855
3" 0 - 1,600 0 - 2,720
4" 0 - 2,880 0 - 4,893
6" 0 - 6,400 0 - 10,870
Note: Standard conditions of air at 70°F and one atmosphere.
Consult factory for other gases, pipe sizes, and flow ranges other than those listed.
Gas Pressure (max): 500 psig (34.5 barg)
NPT(0.25" - 6"):
500 psig (34.5 barg)
150# flange:
230 psig (16 barg)
Check with factory for higher pressure options.
Note: Pressure ratings stated for temperature of 100°F (38°C).
Relative Humidity: 90% RH maximum; non-condensing
Temperature by Sensor Type: ST Sensor: -40 to 250°F (-40 to 121°C)
HT Sensor: -40 to 650°F (-40 to 343°C)
Temperature by Enclosure: DC Power: -40 to 158°F (-40 to 70°C)
AC Power: -4 to 158°F (-20 to 70°C)
Inputs Power (Power Consumption):
  • Input Power (without the Anybus serial communication option): 24VDC, (±10%), 0.4 Amps (standard DC Power) 100 to 240VAC ~(+10%-15%), 50-60Hz, 0.2 Amps (with AC power option).
  • Input Power (with Anybus serial communication option): 24VDC, (±10%), 0.7 Amps (standard DC Power) 100 to 240VAC ~(+10%-15%), 50-60Hz, 0.2 Amps (with AC power option).
Note: Fluctuations of AC and DC power supply are not to exceed ±10% of rating.
Outputs:
  • Two isolated 4-20mA outputs (one for flow rate & a second is programmable for flow rate or temperature); fault indication per NAMUR NE43.
  • Isolated pulse output 0 to 100Hz, 5 to 24 volts p/p for flow (the pulse output can be used as an isolated solid state output for alarms); 10mA max.
  • USB connector for connecting to a laptop or computer is standard; free PC-based software tool - FT2A View™ - provides complete configuration, remote process monitoring and data logging functions.
  • Optional isolated communication outputs: RS485-Modbus, BACnet MS/TP, Profibus-DP, DeviceNet or Ethernet Modbus TCP.
Port: Standard USB port for connecting to a computer.
Software: The free PC-based software tool - FT2A View™ - provides complete configuration, remote process monitoring, and data logging functions.
Optional serial communication: RS485 Modbus, BACnet MS/TP, Profibus-DP, DeviceNet or Ethernet Modbus TCP.
4-20mA Loop Verification: Simulation mode used to align 4-20mA output with the input to customer’s PLC/DCS.
Physical Specs
Type Insertion Inline
Sensor Material: 316 stainless steel standard. Hastelloy C276 optional.
Enclosure: FM (U.S.) & FMc (Canadian) approved for Class I, II, III, Division 2, Groups A, B, C, D, E, F, G, T4A hazardous locations. NEMA 4X and CE approved. Options: Remote NEMA 4X electronics enclosure with explosion-proof sensor j-box.
Cabling to remote enclosure: 5-conductor, 18 AWG, twisted, shielded, 100 feet maximum.
Retractor Assemblies: Packing gland assembly: 125 psig (8.6 barg ) max. High pressure (crank) retractor: NPT 600 psig (41.4 barg), ANSI 150 flange & ANSI 300 flange, no valve supplied.
Installation: Fox-supplied compression fitting connects to customer-supplied ¾" female coupling welded to pipe. Compression fitting included with flow body

FT2A Approvals

CE: Approved

  • EMC Directive; 2014/108/EC
  • Emissions and Immunity Testing: EN61326-1:2008
  • Pressure Equipment Directive: 97/23/EC
  • Weld Testing: EN ISO 15614-1 and EN ISO 9606-1, ASME B31.3

Note: the EU Pressure Equipment Directive (PED) requires that the minimum abient and fluid temperature rating for carbon steel flow bodies not be below -29°C.

FM (U.S.) and FMc (Canada): Approved

  • Class I, II, III, Division 2, Groups A, B, C, D, E, F, G, T4A hazardous locations.
  • Remote NEMA 4X electronics enclosure with explosion-proof sensor j-box.

Optional items available for the Model FT2A Flow Meter:

Talk with our application specialist or a rep near you for sizing and materials requirements

  • Insertion probe or inline models
  • AC or DC power options
  • Remote models available with remote J-box
  • Cable for remote
  • Remote Mounting Kit for remote enclosures
  • Enclosure elbow kit (for use in vertical pipe installations)
  • Retractors
  • Non-resettable Totalizer
  • Extra Instruction Manual
  • USB Cable
  • Teflon Ferrule Kit
  • Stainless Steel Tags
  • Certificate of Conformance
  • Certificate of Origin
  • Flow meter cleaned and bagged for Oxygen service

FT2A Downloads

Additional Model FT2A Information to View and/or Download
Model FT2A Datasheet
Model FT2A Datasheet (Spanish)
FT2A Model Codes
FT2A Display Configuration Codes
FT2A Flowmeter Features
FT2A Procurement Specifications (.pdf)
FT2A Procurement Specifications (.docx)
FT2A Application Data Sheet (.pdf)
FT2A Application Data Sheet (.xlsx)
FT2A Instruction Manual
FT2A Troubleshooting Guide
FT2A Modbus & BACnet Manual
FT2A Profibus, DeviceNet, Ethernet Manual

Note regarding VCP Driver: If the PC is connected to the Internet and running Windows® 7, 8, or 10, the PC will try to automatically load the VCP driver. If the driver does not load automatically, we have supplied a link above.

Other Downloads

FT2A Dimensional Drawings

FT2A Insertion Models
Local electronics, probe without retractor
Local electronics, probe with retractor
Remote electronics, probe without retractor
Remote electronics, probe with retractor
FT2A Inline Models
Local electronics, NPT end connections
Local electronics, 150# flange end connections
Remote electronics, NPT end connections
Remote electronics, 150# flange end connections
Retractors
Crank Retractor (model codes R1 - R5)
Crank Retractor (model codes R6 - R9)

FT2A Awards

Winner of Processing's Breakthrough Products Award

Winner of 2014 Processing's Breakthrough Products Award!

Processing Magazine has awarded Fox Thermal Instruments’ Model FT2A Thermal Mass Flowmeter & Temperature Transmitter the Breakthrough Products of the Year award for 2014. These awards recognize products, technologies and services that made significant contributions in the process industries within the last year and are expected to impact the industry for years to come.

Read the article describing the FT2A’s point of use in natural gas applications.


Winner of the 2014 Flow Control Innovation Award

Winner of Flow Control’s 2014 Innovation Award!

The votes have been tallied! The Fox Model FT2A Thermal Mass Flowmeter and Temperature Transmitter has won the Flow Control 2014 Innovation Awards. The great variety of on-board communication options - including the addition of BACnet MS/TP - available on the FT2A has led to this win! Fox is very pleased and would like to thank all who have voted for this outstanding product.

Read the Digital Issue of Flow Control's Announcement...

Fox Model FT2A Flow Meter

The Fox Model FT2A, winner of both the 2014 Flow Control Innovation Award and the Processing Breakthrough Product Award, is the most widely versatile Thermal Gas Mass Flow Meter on the market today.

The Model FT2A has a large selection of communication protocol options available intrinsically (without any other equipment). Options include: BACnet MS/TP, RS485 Modbus RTU, Profibus-DP, DeviceNet, or Ethernet Modbus TCP.

The Model FT2A measures gas flow rate in standard units (SCFM, NM³/hr, LBS/HR, KG/HR & many more) without the need for temperature and pressure compensation. See the Features/Benefits section below to explore all that the FT2A can offer your application.

Common Features for Fox Model FT2A Flow Meter:

  • Measures process gas flow rate/total and temperature
  • Standard USB port, optional BACnet MS/TP, RS485 Modbus, Profibus-DP, DeviceNet, or Ethernet Modbus TCP
  • Standard on-board display and configuration panel
  • Equipped with the Power Pro™ thermal mass flow sensor
  • One discrete output is programmable for either pulse (for totalizing flow) or alarms
  • One discrete input to reset total or select a different calibration on 2 gas curves
  • 4-20mA output proportional to mass flow rate
  • FM and FMc approved for Class I, II, III, Div 2, Groups A, B, C, D, E, F, G, T4 hazardous locations; NEMA 4X approved; Remote NEMA 4X electronics enclosure with explosion proof sensor j-box.
  • CE Approved
  • NIST traceable calibration
  • Wide measurement range
  • 1% R + 0.2% FS flow accuracy
  • 24 VDC or optional 100 to 240VAC in local or remote enclosures

For complete specs please see the Fox Model FT2A Flow Meter Datasheet.

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