FPT-6140流量传感器 美国OMEGA FPT-6140流量计
FPT-6140
流量与液位 » 涡街流量计和皮托管 » 高精度皮托管 » FPT-6100, FPT-6200 and FPT-6300
高精度皮托管
FPT-6100, FPT-6200 and FPT-6300
Up to ±1% of Rate Accuracy
Easy Installation – Ideal for Retrofits
Very Low Pressure Drop
Low Maintenance
For Clean, Low Viscosity Liquids, Gases, and Steam
Valves Included as Standard
产品描述
The FPT-6000 is a highly accurate averaging pitot tube which generates a pressure differential between its upstream (stagnation) ports and its downstream (static) ports that is proportional to the flowrate squared (Q2 ). The differential pressure can then be measured by a differential pressure transducer (PX760 Series) to provide a 4-20 mA output which is proportional to the flowrate squared. This can then be read out as flowrate by devices with square root extraction, such as OMEGA’s DPF64-SQRT meter or FC-20 mass flow computer. The FPT-6000 can be used to measure clean, low viscosity liquids, gases and steam in a variety of piping systems and pipe sizes (to 72" and above on special order).
The FPT-6000 offers the following advantages over orifice plates: easy, low-cost installation (weld 1 small coupling into place vs. 2 large flanges); much lower permanent pressure loss; low maintenance (occasionally forcing gas through the pressure ports clears the sensing ports when dirt is a problem); and good resistance to wear. Bi-directional flow measurement capability is standard. And, with special double-mount construction, the flow ranges listed can be extended by to up to 4 times
Complete this questionnaire to size the Pitot tube for your application.
SPECIFICATIONS
Accuracy: Up to 1% of rate (see sizing). (Accuracy stated is for use in schedule 40 pipe. If used in schedule 80 pipe, add 1% to accuracy or request special construction)
Repeatability: ±0.1% of rate
Max Temperature:
FPT-6100: 93°C(200°F)
FPT-6200: 204°C (400°F)
Max Pressure:
FPT-6100: 150 psig FPT-6200: 1500 psig
Unrecoverable Pressure Drop (inches H2O): = DP x (CP/D)
where: DP = generated differential pressure (inches H2O)
CP = pressure loss coefficient
= 0.296 for 3⁄8" diameter probe
= 0.387 for ½"
= 0.757 for ¾"
= 0.945 for 1"
D = inside pipe diameter (inches)
Wetted Parts:
FPT-6100: 316SS shaft, brass packing and head, carbon steel weld coupling, ¼" SAE flair brass valve;
FPT-6200: 316SS shaft, packing and head, carbon steel weld coupling, ½ FNPT Carbon Steel block valves
Dimensions
For Model FPT-6100: Add 47⁄8" to line size to determine overall length without valves. Add 7½" to line size to determine clearance required to install unit.
For Model FPT-6300: Add 8¼" to line size to determine overall length without valves. Add 11½" to line size to determine clearance required to install unit
Sizing Equations
1. Any Liquid: ΔP (in. H2O) = Q2(GPM) x Sf / K2 x D41 x 32.14
2. Steam or Any Gas (steam requires min ΔP of 10" H2O): ΔP (in. H2O) = Q2(lb/hr) / K2 x D41 x ρ x 128,900
3. Any Gas: ΔP (in.H2O)= Q2 (scfm) x SS x (T + 460) / K2 x D41 x P x 16,590
Where:
ΔP = differential pressure (in inches H2O)
Q = flowrate
K = flow coefficient (see “how to order”)
D1 = inside diameter of line size (in inches for square and rectangular ducts use): D1 = √(4 x height x width / Π)
P = static line pressure (psia)
T = temperature (in °F)
ρ = density of medium (in pounds per cubic foot)
Sf = Sp. Gr. at flowing conditions
Ss = Sp. Gr. at 15°C (60°F)
NOTE: Use of these equations for liquids yields an accuracy of ±2% of rate. When used for steam, accuracy is ±10% of rate (when steam tables are used). Gas equation yields ±2% of rate accuracy from 21 to 204°C (70 to 400°F) and 0 to 150 psig (when gas is not near its critical point). A ±1% of rate accuracy requires the use of more precise equations which account for shift in K with change in flowrate, gas compressibility, etc. Request a precision flow calibration sheet and please supply the following data: name of fluid, specific gravity, pressure, temperature, inside pipe diameter, viscosity, steam quality, degrees superheat, and ratio of specific heat at constant pressure to that at constant volume (for gas velocities approaching 500 fps).
注: Max. differential pressure shown is for up to 150°C (300°F). Above 150°C (300°F), reduce value by 4% per 56°C (100°F). †
产品编号 产品描述
FPT-6110 1" Nominal Line Size
FPT-6112 1 1/4" Nominal Line Size
FPT-6115 1 1/2" Nominal Line Size
FPT-6120 2" Nominal Line Size
FPT-6125 2 1/2" Nominal Line Size
FPT-6130 3" Nominal Line Size
FPT-6135 3 1/2" Nominal Line Size
FPT-6140 4" Nominal Line Size
FPT-6160 6" Nominal Line Size
FPT-6180 8" Nominal Line Size
FPT-6181 10" Nominal Line Size
FPT-6182 12" Nominal Line Size
FPT-6220 2" Nominal Line Size
FPT-6225 2 1/2" Nominal Line Size
FPT-6230 3" Nominal Line Size
FPT-6235 3 1/2" Nominal Line Size
FPT-6240 4" Nominal Line Size
FPT-6260 6" Nominal Line Size
FPT-6280 8" Nominal Line Size
FPT-6281 10" Nominal Line Size
FPT-6282 12" Nominal Line Size
FPT-6283 14" Nominal Line Size
FPT-6284 16" Nominal Line Size
FPT-6285 18" Nominal Line Size
FPT-6286 20" Nominal Line Size
FPT-6287 24" Nominal Line Size
FPT-6288 36" Nominal Line Size
FPT-6110
FPT-6112
FPT-6115
FPT-6120
FPT-6125
FPT-6125-SS
FPT-6130
FPT-6135
FPT-6140
FPT-6140-SS
FPT-6160
FPT-6180
FPT-6181
FPT-6182
FPT-6220
FPT-6225
FPT-6230
FPT-6230-SS
FPT-6235
FPT-6240
FPT-6240-SS
FPT-6260
FPT-6260-SS
FPT-6280
FPT-6281
FPT-6282
FPT-6283
FPT-6284
FPT-6285
FPT-6286
FPT-6287
FPT-6288
FPT-6310
FPT-6312
FPT-6315
FPT-6320
FPT-6325
FPT-6330
FPT-6335
FPT-6340
FPT-6350
FPT-6360
FPT-6380
FPT-6381
FPT-6382
FPT-6383
FPT-6384
FPT-6385
FPT-6386
FPT-6387
FPT-6388
FPT-6140
FPT-6140流量传感器 美国OMEGA FPT-6140流量计衍生阅读
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