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美国omega FTB-938流量计
带外螺纹NPT接头的滚珠轴承气体涡轮机流量计
FTB-930
带外螺纹NPT接头的滚珠轴承气体涡轮机流量计
±1% of Reading Accuracy
Ball Bearing Design for Economy
440C Bearing Retainers for Durability
Ball Bearings Field Replaceable Without Loss of Calibration
Deflector Cones Stabilize Low Mass Rotor for Increased Bearing Life
NIST Certificate Supplied Standard
The OMEGA? FTB-930 & FTB-940 Series turbine meters have male NPT end fittings for easy connections. They are suitable for use with gases with a minimum density of 0.025 lb/ft 3 (air at STP is 0.0752 lb/ft 3 ).These units come supplied with a mating 2-wire connector and can be supplied with integrally mounted FLSC-60 Series signal conditioners to provide 4-20 mA, 0-5 V, or amplified pulse outputs. These turbine gas meters are intended for clean service only; where there is any doubt about the fluid, strainers are recommended.
OMEGA? precision turbine gas flowmeters are designed to measure actual cubic feet or actual volume passing through the meter. Before sizing a flowmeter, it is necessary to convert flow units (i.e., SCFM, LPM, etc.) to actual units. To convert to actual measured volume (ACFM) from standard volume (SCFM), use the following formula:
ACFM = SCFM x 14.7/Pa x Ta/530
where:
ACFM = Actual cubic feet per minute of measured gas flow
SCFM = Standard cubic feet per minute gas flow
Pa = Operating pressure (psia) in = (psig + 14.7)
Ta = Temperature in degrees, Rankine = (°F + 460)
SPECIFICATIONS
Accuracy: ±1.0% of reading
Repeatability: ±0.25%
Materials of Construction:
Body: 304/316 stainless steel
Rotor: 17-4 PH SS
Bearings: 440C stainless steel
Output: 30 mV p-p sinewave min.
产品型号/产品描述
FTB-931B 0.35-3.5 Max Linear Range (AFCM); 1/2 End Connections MNPT (in)
FTB-932 .75-5 Max Linear Range (ACFM); 1/2 End Connections MNPT (in)
FTB-933 1-10 Max Linear Range (ACFM); 1/2 End Connections MNPT (in)
FTB-934 2-20 Max Linear Range (ACFM); 1/2 End Connections MNPT (in)
FTB-935 2.5-28 Max Linear Range (ACFM); 3/4 End Connections MNPT (in)
FTB-936 4-60 Max Linear Range (ACFM); 1 End Connections MNPT (in)
FTB-937 6-100 Max Linear Range (ACFM); 1 1/4 End Connections MNPT (in)
FTB-938 8-130 Max Linear Range (ACFM); 1 1/2 End Connections MNPT (in)
FTB-939 15-250 Max Linear Range (ACFM); 2 End Connections MNPT (in)
FTB-940 25-450 Max Linear Range (ACFM); 2 1/2 End Connections MNPT (in)
FTB-941 40-650 Max Linear Range (ACFM); 3 End Connections MNPT (in)
Signal Conditioners (Order as a System for factory Scaling on FLSC-61 and FLSC-62, For Example: SYS/FTB-931/FLSC-62)
FLSC-61 0-5/0-10 Volt output
FLSC-62A 4-20 mA output
FLSC-64 Amplifier (Squarewave Output)
Accessories
PSR-24S Regulated power supply, US plug, 90-264 Vac input, 24 Vdc output, 400 mA, screw terminals, UL
注释: Comes complete with operator’s manual and NIST Certificate for air.
To order turbine meters with integral signal conditioners, specify model as a system such as : SYS/FTB-932/FLSC-62A. Omega will scale the signal conditioner with the appropriate calibration information from the turbine meter specified.
No other calibrations are available.
Compatible Meters: DPF701, DPF402, DPF70 with FLSC-AMP, DPF10, DPF500, FC20, 21, 22
Contact Flow Engineering Dept
美国omega FTB-938流量计
