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Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

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Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

China Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam supplier
Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam supplier Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam supplier

Large Image :  Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

Product Details:

Place of Origin: China
Brand Name: Iflow
Certification: ISO9001, CE
Model Number: LZ50

Payment & Shipping Terms:

Minimum Order Quantity: negotiable
Price: negotiable
Packaging Details: carton
Delivery Time: 2-4 weeks
Payment Terms: T/T, L/C, Western Union
Supply Ability: 500 sets per month
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Detailed Product Description
Name: Variable Metal Rota Flow Meters Line Diameter: DN15 - DN100
Accuracy: 0.5% At Liquid, 1% At Gas, 1.5% At Steam Compensation: Temperature / Pressure / Temp. & Pressure
Connect: Quick Connect Flange Pressure Rating: PN1.0 Mpa To PN40 Mpa
Option: Weight Flow Or Cubic Flow Flow Direction: Horizontal

Metal rota high pressure air flow meters for lubrication oil, variable area type flow meters Pipe size DN15-100

 

Operation principle

The variable area, also called metal flowmeter's flow sensing element consists of a vertical tapered tube expanding from bottom to top and a float set moving up and down along the tapered tube axis. Working principle shown in Figure 1, the measured fluid from the bottom up through the conical tube 1 and the float 2 formed ring gap 3, the upper and lower ends of the float to produce differential pressure to form the floating force of the float when the lift is greater than the submerged fluid The weight of the float, the float will rise, the ring gap area increases, the annular gap at the immediate decline in fluid flow velocity, the float lower differential pressure decreases, the role of the buoy lift force also decreases until the lifting force is equal to immersed in the fluid In the float weight, the float will be stable at a certain height. The height of the float in the conical tube and the flow through the corresponding relationship.

 

The basic equation of volume flow Q is:

Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

When the float is non-solid hollow structure (put the weight adjustment), then

Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

Where α - instrument flow coefficient, due to float shape varies;
Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam  

ε - gas expansion coefficient measured gas is gas, usually due to the small coefficient of this correction is ignored, and has been included in the flow coefficient through the calibration, such as liquid, then ε = 1;
△ F - Circulation area, m2;
g - local acceleration of gravity, m / s2;
Vf - float volume, if extended body should also include, m3;
ρf - float material density, kg / m3;
ρ - measured fluid density, such as gas is the density of the upstream cross-section of the float, kg / m3;
Ff - working area of ​​the float (maximum diameter) cross-sectional area, m2;
Gf - float quality, kg.
Circulation area and the relationship between the height of the float as shown in equation (3), when the structural design has been set, then d, β are constant. There is a quadratic term in h, we can not ignore this nonlinear relationship. Only when the cone angle is small, can we regard it as approximate linearity.
m2 (3)
Where d - maximum diameter of the float (ie, working diameter), m;
h - float from the cone diameter equal to the maximum diameter of the float rise height, m;
β - taper cone angle;
a, b - constant.

 

Model selection

LZ-□-□-□-□-□-□

Code Description
Type code LZ metal rota flow meter
Display Z local display
D remote reading
Diameter 15 DN 15mm
25 DN 25mm
40 DN 40mm
50 DN 50mm
80 DN 80mm
100 DN 100mm
150 DN150mm
Special function N normal
F anti corrosion
Media to be tested L liquid
G air

 

Metal Rota Variable Area Flow Meter Horizontal High Pressure For Steam

Data sheet

Diameter(mm) Flow range Pressure loss
Anticorrosion Normal air(m3/h at 0.1013Mpa) water L/h air water
15 15 0.07-0.7 2.5-25 7.1 6.5
0.11-1.1 4.0-40 7.2 6.5
0.18-1.8 6.3-63 7.3 6.6
0.28-2.8 10-100 7.5 6.6
0.4-4.0 16-160 8.0 6.8
0.7-7.0 25-250 10.8 7.2
1.0-10 40-400 10 8.6
25 1.6-16 63-630 14 11.1
25 3.0-30 100-1000 7.7 7
4.5-45 160-1600 8.8 8
7.0-70 250-2500 12 10.8
50 11-110 400-4000 19 15.8
50 18-180 630-6300 8.6 8.1
25-250 1000-10000 10.4 11
80 40-400 1600-16000 15.5 17
80 60-600 2500-25000 8.0 8.1
100 100-1000 4000-40000 13.0 9.5
  100 200-2000 6300-63000 11.0 10

 

 

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