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Wedge flowmeter
Part III: SP wedge flowmeter (SAMPLE WEDGE FLOWMETER)
　　SP wedge flowmeter can meet the measurement requirements of most liquids, such as clean liquid, gas, steam, air, etc. It can be widely used in petroleum, chemical, electricity, light industry and other industries.
Operating principle 　　 SP Series wedge flowmeter principle based Bernoulli (energy conservation and continuous) equations, differential pressure produced by the throttle, the differential pressure is proportional to the mass flow or volume flow. Different pipe diameter D and the height H ratio (a wedge ratio H / D) to determine the different flow ranges, Sample wedge meter can solve your most difficult flow measurement applications, and to ensure accurate and reliable measurement results.

Flow equation

In the formula: qv: volumetric flow, m3/s   C: discharge coefficient; Ɛ: expansibility factor;
m: throttle area ratio, m=S1/   S1: arch flow area m2;
D: Internal diameter of the pipeline m; △p: differential pressure Pa; ρ: density of the measured medium; kg/m3.

S1 calculation:

 Performance features Precision: ±0.5%FS  ±1%FS Repeatability: ±0.2%  Range ratio: 10: 1
Low Reynolds number measurement (mini RE#300)
High viscosity measurement (500, 1000, 3000 CP or higher)
Mini straight pipe requirement: ≥ front 5D rear 2D
Range of pipe diameter: 1"～12" (DN25～300mm) or larger
Long service life, maintenance-free, wear resistance;
Low loss of pressure, reduce pump loss.
Keep stable wedge ratio (H/D), and accurate measurement.
Diameter of measurement pipe: DN25-1200mm;
Wedge ratio (H/D)0.2  0.3  0.4  0.5
Manufacturing standard: API  ASME  ANSI  B31.1  GSA-Z299.3, etc.;
Long service life, maintenance-free, wear resistance;
Low loss of pressure, reduce pump loss.
Keep stable wedge ratio (H/D), and accurate measurement.
Diameter of measurement pipe: DN25-1200mm;
Wedge ratio (H/D): 0.2 0.3 0.4 0.5
Manufacturing standard: API  ASME  ANSI  B31.1  GSA-Z299.3, etc.;
Long service life, maintenance-free, wear resistance;
Low loss of pressure, reduce pump loss.
Keep stable wedge ratio (H/D), and accurate measurement.
Diameter of measurement pipe: DN25-1200mm;
Wedge ratio (H/D): 0.2 0.3 0.4 0.5
Manufacturing standard: API  ASME  ANSI  B31.1  GSA-Z299.3, etc.;
　　Criteria for SP wedge flowmeter selection
Brand Medium type Test standard Internal diameter of the pipeline Material of body Material of wedge Pressure range Temperature standard Product type Accessories
SPWD-     -   -       -
  W: liquid
G: gas
S: steam		 G: national level
S: provincial research institute
Q: enterprise level		 25
32
40
50
65
80
100
125
150
200
250
300
square pipeline
XX*XX8*X		 C: carbon steel
F: 304 steel
M: 316L
Q: other materials		 C: carbon steel
F: 304 steel
M: 316L
Q: other materials		 1:
0.25MPa
2:
0.6MPa
3:
1.0MPa
4:
1.6MPa
5:
2.5MPa
6:
4.0MPa
7:
5.0MPa
8:
6.3MPa
9:
10.0MPa
10:
CL150
11:
CL300
12:
CL600
13:
CL900		 T1:
≤100 ℃
T2:
≤200 ℃
T3:
≤300 ℃		 F: pipe section type flange connection
H: pipe sectin type welded connection
L1: integrated intelligent type(multivariable type with temperature and pressure compensation)
L2: integrated intelligent type (multivariable type)
L3: integrated intelligent type (standard type)
B1: split type
B2: two-way type
T: horizontal type
I: vertical type		 F: with companion mounting flange (set)
G: disposable valve
N: condenser
S: three-valve manifold
D: multivariable transmitter
P: differential pressure transmitter
T: thermometer
(pt100)
E: integrating instrument
X: instrument box
Q: trade measure assembly
For example: SPWD-WS-100-F-M4T1FL3-GSPTEX
(SP wedge flow sensor; medium: liquid; provincial certificate of authenticity; pipe diameter: DN1000mm material of sensor pipeline 304#; Material of wedge 316L stainless steel; pressure grade: 1.6MPa; temperature: ≤100℃; pipe section type flange connection; integrated connection mode of differential pressure transmitter and sensor; accessory range: disposable valve, three-valve manifold, differential pressure transmitter, thermometer, integrating instrument and instrument box Note: samples are manufactured with the best materials if no special requirements