Fox Thermal FT3 - Page 123

Operating Specs (cont'd)
Temperature:
ST sensor: -40 to 250°F (-40 to 121°C)
HT sensor: -40 to 650°F (-40 to 343°C)
Enclosure (without display or AC power supply): -40 to 158°F (-40 to 70°C)
Enclosure (with display and/or AC power supply): -4 to 158°F (-20 to 70°C)*
Remote Sensor Enclosure: -40 to 212ºF (-40 to 100°C)
*NOTE! Display dims below -4˚F (-20˚C), function returns once temperature rises again.
Flow Velocity Range:
15 to 60,000 SFPM (0.07 to 280 NMPS)
Turndown: up to 1000:1; 100:1 typical
Maximum Flow Ranges for Insertion Flow Meters
Pipe Diameter SCFM MSCFD NM
3
/hr
1.5" (40mm) 0-840 0-1,220 0-1,325
2" (50mm) 0-1,400 0-2,020 0-2,210
2.5" (63mm) 0-2,000 0-2,880 0-3,150
3" (80mm) 0-3,100 0-4,440 0-4,890
4" (100mm) 0-5,300 0-7,650 0-8,360
6" (150mm) 0-12,000 0-17,340 0-18,930
8" (200mm) 0-20,840 0-30,020 0-32,870
10" (250mm) 0-32,800 0-47,250 0-51,740
12" (300mm) 0-46,600 0-67,180 0-73,500
NOTE! To determine if the FT3 will operate accurately in other pipe sizes, divide the maximum flow rate by the pipe area.
The application is acceptable if the resulting velocity is within the velocity range above. Check Fox Thermal website for
velocity calculator.
Maximum Flow Ranges for Inline Flow Meters
Size SCFM MSCFD NM
3
/hr
0.5" 0-125 0-180 0-200
0.75" 0-220 0-320 0-350
1" 0-360 0-520 0-570
1.25" 0-625 0-900 0-990
1.5" 0-840 0-1,220 0-1,325
2" 0-1,400 0-2,020 0-2,210
2.5" 0-2,000 0-2,880 0-3,150
3" 0-3,100 0-4,440 0-4,890
4" 0-5,300 0-7,650 0-8,360
6" 0-12,000 0-17,340 0-18,930
NOTE! Standard conditions of air at 70°F and one atmosphere. Consult factory for other gases and for flow ranges above
those listed. Inline meters above 2,500 SCFM (7,900 NM3/H) air may require third party calibration. Contact Fox Thermal.
Appendix | 123
Model FT3
Appendix