Fox Thermal Model FT1 Thermal Mass Flow Meter

Award winning Model FT1

FT1 Flow Meter
The Model FT1 is a multiple award winner due to its innovative design elements such as the DDC-Sensor™ technology platform that allows it to operate using the Gas-SelectX® gas menu selection tool.

Key Features:

  • Insertion & Inline Styles
  • DDC-Sensor™ Technology
  • Gas-SelectX® Gas Selection Menu
  • CAL-V™ Calibration Validation
  • Scroll down for more features/benefits!

Industrial Applications:


ModbusView™ Software
ModbusView™ is Fox Thermal software for FT1 meters equipped with the Modbus RTU (RS485) communication option. It provides a streamlined way to connect to compatible FT1 meters through the Modbus interface, access meter information, and support commissioning and ongoing monitoring. Use ModbusView™ to:

  • Connect to compatible FT1 meters through Modbus RTU (RS485)
  • View available process and meter information
  • Access supported configuration and diagnostic functions
  • Support commissioning, troubleshooting, and field service workflows

Connection: Modbus RTU (RS485)
Compatibility: FT1 configured with the Modbus RTU communication option
Availability: Free download (see "Downloads")

FT1 View™ Software
FT1 View™ is Fox Thermal’s free PC-compatible software for connecting directly to an FT1 through its USB port. Use it to access and adjust meter settings in a clear visual interface, monitor data, troubleshoot meter operation, and document calibration-validation results. Use FT1 View™ to:

  • Access configuration parameters through pull-down menus and pop-up windows
  • Set measurement units, flow and temperature ranges, alarms, and other meter settings
  • Run CAL-V™ and save or print a Calibration Validation Certificate
  • Select or mix gases in Gas-SelectX® Menu
  • Use simulation mode to align the 4-20 mA output with PLC or DCS inputs
  • Review raw data for diagnosis and troubleshooting
  • Log data to an Excel® spreadsheet

Connection: USB to PC or laptop with working Microsoft Office and USB driver installed (see "Downloads"
Compatibility: FT1 flow meters
Availability: Free download (see "Downloads")

Flow Conditioners
Flow meter accuracy is often dependent on achieving a uniform flow profile near the center of the pipe. Distortion and swirl are disturbances in flow that can be remedied either by extending the length of space between the cause of the disturbance and the sensing element (increasing straight pipe runs) or by adding a flow conditioner to correct the disturbance. Flow conditioners installed upstream of flow meters reduce the need for long, straight pipe runs. Common Features for Fox Thermal FC20 Flow Conditioner:

  • For use with all Fox insertion style flow meters
  • Reduces the need for long straight pipe runs
  • Negligible pressure drop
  • Precision, laser-cut design
  • 316 stainless steel material

Calibration Validation
CAL-V™ is a Calibration Validation test feature available on the Model FT1 Thermal Mass Flow Meter. This test does the following:

  • Tests the functionality of the sensor and its associated signal processing circuitry
  • Checks for build-up on sensor that could affect calibration
  • Ensures that the meter still retains its original NIST-traceable calibration

Use this test according to the manufacturer’s instructions in order to validate the calibration of the meter.

CAL-V™ in FT1 available starting in firmware v6.0.

Gas-SelectX® Multi-Gas Flexibility
Gas-SelectX® allows FT1 users to select a pure gas or configure a custom gas mixture in the field. Powered by Fox Thermal’s DDC‑Sensor™ technology and advanced correlation algorithms, the feature gives operators flexibility to adapt the meter to changing process requirements without changing hardware.

Available pure gases
Acetone, air, ammonia, argon, butane, carbon dioxide, carbon monoxide, chlorine, ethane, helium, hydrogen, methane, natural gas*, nitrogen, oxygen, propane, and water.
*Natural gas refers to pipeline-quality, dry natural gas using the NAESB standard composition. For associated gas or other nonstandard natural-gas compositions, use the Gas-SelectX® custom gas-mix function or contact Fox Thermal for application support.

Custom gas mixtures
Create a custom gas mixture using up to five of the available gases. Gas composition is programmable in 0.000001% increments, giving users exceptional flexibility to configure the FT1 for their application. The Gas-SelectX® feature can be accessed through the front panel of the meter or by using Fox Thermal's ModbusView™ software or FT1 View™ software.

More Info

Common Features for Fox Thermal Model FT1 Flow Meter:

  • Measures process gas flow rate/total and temperature
  • Insertion probes (for 1.5" - 70" pipes); Inline flow bodies with NPT ends (¾" - 3" pipes); Inline 150 lb. Flanged flow bodies (¾" - 6" pipes)
  • Equipped with the DDC-Sensor™ (Direct Digitally Controlled)
  • 3/4-inch (standard) and 1/2-inch (optional) probe diameters
  • Gas-SelectX® gas selection menu. Choose from available list of gases/gas mixes to measure flow. NIST-traceable calibration
  • One standard 4-20mA output proportional to mass flow rate; HART communication option
  • One output is selectable for pulse/alarm, Modbus RTU (RS485), or BACnet MS/TP (RS485)
  • Optional on-board display and configuration panel
  • Click the Approvals tab for Model FT1 Agency Approvals.
  • Calibration Validation with the CAL-V™ feature.
  • A USB connection is standard (free FT1 View™ Software)
  • ModbusView™software for Modbus-equipped FT1 configurations
  • Wide measurement range
  • Flow Accuracy for air: ±1% R ±0.2% FS; Flow accuracy for other gases: ±1.5% R ±0.5% FS
  • 10-30 VDC in local enclosures

FT1 Flow Meter Specs

Technical Specifications
Fox Thermal Model FT1 Thermal Mass Flow Meter & Temperature Transmitter
Performance Specs
Type
Insertion
Inline
Flow Accuracy:
Air: ± 1% of reading ± 0.2% of full scale.
Other Gases: ± 1.5% of reading ± 0.5% of full scale.
Accuracy specification applies to customer's selected flow range
Straight, unobstructed pipe requirement:
15 diameters upstream; 10 downstream.
8 diameters upstream; 4 downstream.
 
 
 
Flow Repeatability:
± 0.2% of full scale
Flow Response Time:
0.8 seconds (one time constant)
Temperature Accuracy:
± 1° F (± 0.6° C)
Calibration:
Factory Calibration to NIST-traceable standards
CAL-V™: In situ, operator-initiated calibration validation
Operating Specs
Type
Insertion
Inline
Flow Units (field selectable):
SCFM, SCFH, NM3/M, NM3/H, NM3/D, NLPS, NLPM, NLPH, MCFD, MSCFD, SCFD, MMSCFD, MMSCFM, SM3/M, SM3/D, SM3/H, LB/S, LB/M, LB/H, LB/D, KG/S, KG/M, KG/HR, SLPM, MT/H
Flow Rates:
15 to 25,000 SFPM (0.07 to 120 NMPS)
Turndown:
up to 1000:1; 100:1 typical
Flow Ranges:
Pipe Size SCFM NM³/HR
1.5" (40mm) 0 - 354 0 - 558
2" (50mm) 0 - 583 0 - 920
2.5" (63mm) 0 - 830 0 - 1,200
3" (80mm) 0 - 1,280 0 - 2,020
4" (100mm) 0 - 2,210 0 - 3,480
6" (150mm) 0 - 5,010 0 - 7,910
8" (200mm) 0 - 8,680 0 - 13,700
10" (250mm) 0 - 13,600 0 - 21,450
12" (300mm) 0 - 19,400 0 - 30,600
Pipe Size SCFM NM³/HR
0.75" (20 mm) 0 - 93 0 - 146
1" (25 mm) 0 - 150 0 - 237
1.25" (32 mm) 0 - 260 0 - 410
1.5" (40 mm) 0 - 354 0 - 558
2" (50 mm) 0 - 583 0 - 920
2.5" (63 mm) 0 - 830 0 - 1,200
3" (80 mm) 0 - 1,280 0 - 2,020
4" (100 mm) 0 - 2,210 0 - 3,480
6" (150 mm) 0 - 2,500 0 - 3,950
Note: To determine if the FT4A will operate accurately in other pipe sizes, divide maximum flow rate by the pipe area. The application is acceptable if the resulting velocity is within the velocity range above.
Note: Consult factory for flow ranges above those listed. Inline meters above 5,000 SCFM (7,900 NM3/H) air may require third party calibration.
Gas Pressure (max):
740 psig (51 barg)
 
 
 
316 SS inline w/NPT ends: 500 psig (34.5 barg)
316 SS inline w/150lb flanges: 230 psig (16 barg)
CS inline w/NPT ends: 500 psig (34.5 barg)
CS inline w/150lb flanges: 285 psig (20 barg)
Check with factory for higher pressure options.
NOTE: When teflon ferrule option ordered, gas pressure is 60psig (4.1 barg) maximum.
Relative Humidity:
90% RH maximum; non-condensing
Temperature:
DDC-Sensor™: -40 to 250°F (-40 to 121°C)
Enclosure: -40 to 158°F (-40 to 70°C)
*Note: Display dims below -4°F (-20°C); function returns once temperature rises again.
Input Power:
12 to 24VDC, 6 watts
Full input power input range: 10 to 30VDC
A 20 Watt or greater power supply is recommended to power the FT1 to ensure the power supply can provide enough current under all temperature, ventilation, and power on conditions.
Inputs/Outputs
  • All outputs and communication circuits are galvanically isolated.
  • Standard 4-20mA output proportional to the flow rate; fault indication per NAMUR NE43; HART communication option.
  • Second output for pulse, Modbus RTU (RS485), or BACnet MS/TP (RS485).
  • Isolated pulse output: 5 to 24VDC, 20mA max, 0 to 100Hz for flow.
  • The pulse output can be used as an isolated sold state output for alarms.
Port:
Mini USB communication port is standard.
Software:
The free PC-based software tool - FT1 View™ - provides complete configuration, remote process monitoring, and data logging functions.
Optional serial communication:
Modbus RTU (RS485), BACnet MS/TP (RS485) or HART (when no pulse output has been ordered).
4-20mA and Pulse Verification:
Simulation mode used to align 4-20mA output and pulse output (if ordered) with the input to customer’s PLC/DCS.
Physical Specs
Type
Insertion
Inline
Sensor Material:
316 stainless steel standard.
Probe Diameter:
3/4” probe diameter standard with 1” MNPT compression fitting (3/4” fitting optional). 1/2” probe diameter optional with 3/4” compression fitting.
Enclosure:
NEMA 4X, Aluminum, dual conduit entries with ¾" FNPT.
Retractor Assemblies:
150 psig (10.3 barg) max.
 
N/A
Installation:
Fox Thermal-supplied compression fitting connects to customer-supplied branch outlet welded to pipe.
Compression fitting included with flow body.

FT1 Approvals

CE: Approved

  • EMC Directive; 2014/30/EU
  • Emissions and Immunity Testing: EN61326-1:2013

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

  • Class I, Div. 1, Gps B, C, D;
  • Class II, Div. 1, Gps E, F, G;
  • Class III, Div. 1; T4, Ta = -40°C to 70°C;
  • Class I, Zone 1, AEx/Ex db IIB+H2 T4; Gb Ta = -40°C to 70°C; Type 4X, IP66/67

ATEX (FM16ATEX0013X): Approved

  • II 2 G Ex db IIB+H2 T4; Gb Ta = -40°C to 70°C; IP66/67
  • II 2 D Ex tb IIIC T135°C; Db Ta = -40°C to 70°C; IP66/67

IECEx (IECEx FMG 16.0010X): Approved

  • Ex db IIB+H2 T4; Gb Ta = -40°C to 70°C; IP66/67
  • Ex tb IIIC T135°C; Db Ta = -40°C to 70°C; IP66/67

ATEX and IECEx Standards:

EN 60079-0:2012 + A11:2013
EN 60079-1:2014
EN 60079-31:2014
EN 60529:1991 + A1:2000

IEC 60079-0:2011
IEC 60079-1:2014
IEC 60079-31:2013
IEC 60529:2001

Fox Certifications

Optional items available for the Model FT1 Flow Meter:

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

  • FC20 Flow Conditioner for use with insertion style FT1
  • AC to 24VDC power converter with DIN mounting rail
  • ModbusView™ software license for remote connectivity
  • USB remote connectivity kit (ModbusView RS485-to-USB converter)
  • RJ45 remote connectivity kit (ModbusView RS485-to-RJ45 converter)
  • Flow meter cleaned and bagged for Oxygen service
  • M20x1.5 wiring connection adapters (qty. 2 per meter)
  • Certificate of Conformance
  • Certificate of Origin
  • Material certificates for wetted parts
  • Extra Instruction Manual
  • USB Cable, A-male/mini USB-B male, 6' length
  • Teflon Ferrule Kits (for 3/4" or 1/2" probe sizes), 60 psi max. pressure
  • 3/4" MNPT compression fitting for probe process connection with 3/4" probe diameter
  • 1/2" MNPT compression fitting for probe process connection with 1/2" probe diameter
  • Stainless Steel Tags
  • Retractors
  • Sun shade accessory
  • Retractors

FT1 Downloads

Model FT1 Information to View and/or Download
Model FT1 Datasheet
FT1 Model Codes
FT1 Flowmeter Features
FT1 Procurement Specifications
.pdf / .docx
FT1 Instruction Manual
Troubleshooting Guide
CAL-V™ Certificate
Gas-SelectX® Datasheet
FT1 Power Supply Datasheet
Modbus View Information to View and/or Download
Modbus View Software
Modbus View Datasheet
Modbus View Manual

Model FT1 View™ Information to View and/or Download
FT1 View™ Software
FT1 View™ Datasheet
FT1 View™ Manual
VCP Driver (for FT1 View™ Software)

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.

USB Driver and the Fox Thermal FT1 View™ Software
A USB driver is needed for FT1 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.

Other Downloads

FT1 Dimensional Drawings

FT1 Insertion Models
Local electronics, probe without retractor
Local electronics, probe with retractor
FT1 Inline Models
Local electronics, NPT end connections
Local electronics, 150# flange end connections
Fox 3D Viewer

FT1 Awards

Winner of the Flow Control Innovation Award

Winner of Flow Control’s 2015 Innovation Award!

The Fox Model FT1, winner of the 2015 Flow Control Innovation Awards, is the newest Thermal Gas Mass Flow Meter offered from Fox Thermal.

The Model FT1 has won this award due to its innovative design elements such as the DDC-Sensor™ technology platform that allows it to operate using the Gas-SelectX® gas menu selection tool. The Model FT1 measures gas flow rate in standard units without the need for temperature and pressure compensation.

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

Winner of the 2015 Processing Breakthrough Award

Winner of the Processing Magazine’s 2015 Breakthrough Product Award!

Among all thermal mass flow meters on the market today, the Model FT1 from Fox is the only Breakthrough Product celebrated by Processing Magazine in 2015. The Model FT1 has garnered attention due to its Direct Digitally Controlled sensor technology – a digital sensor technology unique to the Model FT1. The DDC Sensor™ provides the platform for a revolutionary new gas selection feature: Gas-SelectX®. Each FT1 is programmed with the Gas‑SelectX® gas-selection menu, which includes selectable pure gases and custom gas-mixture capability. Configure a custom mixture using up to five available gases, with composition programmable in 0.000001% increments.

Read the Digital Issue of Processing's Announcement...

Fox Thermal Model FT1 Flow Meter

The Fox Thermal Model FT1, winner of the 2015 Flow Control Innovation Award, is the newest Thermal Gas Mass Flow Meter offered from Fox Thermal.

The Model FT1 won this award due to its innovative design elements such as the DDC-Sensor™ technology platform that allows it to operate using the Gas-SelectX® gas menu selection tool.

The Model FT1 measures gas flow rate in standard units (SCFM, NM³/hr, LBS/HR, Kg/Hr & many more) without the need for temperature and pressure compensation.

A free software tool – FT1 View™ - is available for the Model FT1 that allows the user to connect to and configure the FT1 using a PC or laptop.

Common Features for Fox Thermal Model FT1 Flow Meter:

  • Measures process gas flow rate/total and temperature
  • Insertion probes: for 1.5" to 70" pipes
  • Equipped with the DDC-Sensor™ (Direct Digitally Controlled)
  • Gas-SelectX® gas selection menu. Choose from available list of gases/gas mixes to measure flow. NIST-traceable calibration
  • One standard 4-20mA output proportional to mass flow rate
  • One output is selectable for pulse/alarm, RS485 Modbus RTU, or BACnet MS/TP
  • Optional on-board display and configuration panel
  • Click the Approvals tab for Model FT1 Agency Approvals.
  • Calibration Validation with the CAL-V™ feature.
  • A USB connection is standard (free FT1 View™ Software)
  • Wide measurement range
  • Flow Accuracy for air: ±1% R ±0.5% FS; Flow accuracy for other gases: ±1.5% R ±0.5% FS
  • 10-30 VDC in local enclosures

For complete specs please see the Fox Thermal Model FT1 Flow Meter Datasheet.

Asking the right questions
for over 25 years.



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