| Technical Specifications |
| Fox Thermal 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 - 840 |
0 - 1,325 |
| 2" (50mm) |
0 - 1,400 |
0 - 2,210 |
| 2.5" (63mm) |
0 - 2,000 |
0 - 3,150 |
| 3" (80mm) |
0 - 3,100 |
0 - 4,890 |
| 4" (100mm) |
0 - 5,300 |
0 - 8,360 |
| 6" (150mm) |
0 - 12,000 |
0 - 18,930 |
| 8" (200mm) |
0 - 20,840 |
0 - 32,870 |
| 10" (250mm) |
0 - 32,800 |
0 - 51,740 |
| 12" (300mm) |
0 - 46,600 |
0 - 73,500 |
|
| Pipe Size |
SCFM |
NM³/Hr |
| 0.25" |
0 - 7.5 |
0 - 11.8 |
| 0.5" |
0 - 125 |
0 - 200 |
| 0.75" |
0 - 220 |
0 - 350 |
| 1" |
0 - 360 |
0 - 570 |
| 1.25" |
0 - 625 |
0 - 990 |
| 1.5" |
0 - 840 |
0 - 1,325 |
| 2" |
0 - 1,400 |
0 - 2,210 |
| 2.5" |
0 - 2,000 |
0 - 3,150 |
| 3" |
0 - 3,100 |
0 - 4,890 |
| 4" |
0 - 5,300 |
0 - 8,360 |
| 6" |
0 - 12,000 |
0 - 18,930 |
|
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: |
Mini USB communication port is standard. |
| 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 Thermal-supplied compression fitting connects to customer-supplied ¾" female coupling welded to pipe. |
Compression fitting included with flow body |