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| Product Name: |
Gas flowmeter
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| Supply Ability: |
100000000000000000 |
| Related proudcts |
flowmeter, instrument, gas flowmeter, |
| Specifications |
DN65 |
| Price Term: |
FOB |
| Port of loading: |
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| Minimum Order |
1 |
| Unit Price: |
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gas vortex flowmeter series is mainly used for medium industrial pipe fluid flow measurement of steam, steam vortex flowmeter features low pressure loss, measuring range, high precision in the measurement conditions are not nearly the volume density of the fluid flow , Pressure, temperature, viscosity and other parameters. No moving mechanical parts, so high reliability and little maintenance. Long-term stability of the instrument parameters. Gas flowmeter using piezoelectric stress sensors, high reliability, can be -20 ℃ ~ +250 ℃ operating temperature range. With analog standard signal, but also digital pulse signal output, easily supporting the use of computers and other digital systems is a more advanced and ideal flow meter¡£
1¡¢Works
Triangle set in the steam flow cylindrical bluff body, alternately from both sides of the bluff body to generate a regular vortex, this vortex is called Carmen vortex, as shown, the vortex downstream of the bluff body listed in the non-symmetrically Order¡£
The occurrence frequency of the vortex set f, the average flow rate of the measured medium, the bluff body surface facing the flow width d, the body of the path to D, you can get the following relation£º
¡¡f=SrU1/d=SrU/md ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡£¨1£©
Where U1 - the average velocity on both sides of the bluff body£¬m/s£»
Sr--Strouhal number£»
m--Segment Area on both sides of the bluff body and the pipe cross-sectional area ratio
¡¡Pipe volume flowqvΪ
qv=¦ÐD2U/4=¦ÐD2mdf/4Sr ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡(2)
K=f/qv=[¦ÐD2md/4Sr]-1 ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ (3)
Where K - the instrument flow coefficient, the number of pulses / m3£¨P/m3£©¡£
K addition to the bluff body, the relevant geometry of the pipeline, but also with the Strouhal number related. Strouhal number of dimensionless parameters, it is with the bluff body shape and Reynolds number on Figure 2 shows the cylindrical bluff body of the Strouhal number and the pipe Reynolds number diagram. The figure shows that in ReD = 2 ¡Á 104 |
| Company: |
JinHu HengKai Control System.,Ltd
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| Contact: |
Ms. Ella Huang |
| Address: |
No107 JinHu West Road |
| Postcode: |
211600 |
| Tel: |
+86-0517-86985056 |
| Fax: |
+86-0517-86985058 |
| E-mail: |
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