| Technical Specifications |
| Fox Thermal Model FT3 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
CAL-V™ and Zero CAL-CHECK®: In situ, operator-initiated calibration validation |
| 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" - 3"):
500 psig (34.5 barg)
150# flange: (½" - 6")
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: (see Approvals tab) |
ST Sensor: -40 to 250°F (-40 to 121°C)
HT Sensor: -40 to 650°F (-40 to 343°C) |
| Temperature by Enclosure: (see Approvals tab) |
Without display or AC power supply: -40 to 158°F (-40 to 70°C)
With display and/or AC power supply: -4 to 158°F (-20 to 70°C)
Remote sensor junction box: -40 to 212°F (-40 to 100°C) |
| Inputs Power: |
- 24 VDC (±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.
Class I Equipment (Electrical Grounding Required for Safety).
Installation (Over-voltage) Category II for trnasient over-voltages.
|
| Inputs/Outputs: |
- All outputs and communication circuits are galvanically isolated.
- 4-20mA output one is proportional to the measured flow rate.
- Fault indication per NAMUR NE43.
- 4-20mA output two is programmable for temperature or flow rate.
- Digital output one is programmable for either pulse (for totalizing flow) or alarms.
- Output is open collector type, operating voltage 5V to 24V, maximum sinking current: 10mA.
- The pulse output is proportional to flow rate with a range of 0 to 100Hz.
- When configured for alarm, the digital output generates an on or off signal.
- Remote switch input can be configured to reset elapsed time, flow totalizer or switch between gas curves when the 2 gas curve option is ordered.
|
| Port: |
Mini USB communication port is standard. |
| Software: |
The free PC-based software tool - FT3 View™ - provides complete configuration, remote process monitoring, and data logging functions. |
| Optional serial communication: |
HART or RS485 Modbus. |
| 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: |
NEMA 4X (IP68), Aluminum, dual conduit entries with ¾" NPT or optional M20 x 1.5mm.
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. |