Performance Specs
Flow Accuracy:
±1% of reading ±0.2% of full scale
Accuracy specification applies to customer's selected flow range
Maximum range: 15 to 60,000 SFPM (0.07 to 280 NMPS)
Minimum range: 15 to 500 SFPM (0.07 to 2.4 NMPS)
Straight, unobstructed pipe requirement
Insertion Meters: 15 diameters upstream; 10 downstream
Inline Meters (1/2" size): 6" (152mm) upstream and downstream
Inline Meters (all other sizes): 8 diameters upstream; 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 250º F (-40 to 121º 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
Units of Measurement (field selectable):
SCFM, SCFH, NMPS, NM3/M, NM3/H, NM3/D, NLPS, NLPM, NLPH, SCFD, MSCFD, MMSCFD,
MMSCFM, SMPS, SM3/D, SM3/H, SM3/M, LB/S, LB/M, LB/H, LB/D, KG/S, KG/M, KG/H, SLPM, SFPM,
MT/H, MCFD
Gas Pressure (maximum at 100º F):
Insertion meter: 500 psig (34.5 barg)
316 SS inline meter with NPT ends: 500 psig (34.5 barg)
316 SS inline meter with 150 lb. flanges: 230 psig (15.86 barg)
Carbon steel inline meter with NPT ends: 500 psig (34.5 barg)
Carbon steel inline meter with 150 lb. flanges: 285 psig (19.65 barg)
Hot Tap/Retractor Assembly: 125 psig (8.62 barg)
NOTE! Check with factory for higher pressure options.
NOTE! When Teflon ferrule option ordered, gas pressure is 60 psig (4.1 barg) maximum
NOTE! The EU Pressure Equipment Directive (PED) requires that the minimum ambient and uid
temperature rating for carbon steel ow bodies not be below -29°C.
Relative Humidity: 90% RH maximum; non-condensing
NOTE! Condensing liquids contacting the sensor can cause erratic flow indication.
Appendix | 122
Model FT3
Appendix