Integrated wafer vortex flow meter
Introduction
If the fluid does not flow in the pipeline, vortices will not be formed. Once the fluid starts to flow and reaches a certain flow rate, vortices will gradually form downstream of the baffle. These vortices are alternately separated on both sides of the baffle and carried away by the fluid. A high-pressure and low-pressure zone is formed downstream of the baffle body, and a phenomenon called Karman vortex street appears.
These pressure differences are exactly matched with the frequency of passing vortices and are measured by mechanical sensors. The distance between the two vortices corresponds to the specific volume of the fluid. Therefore, the total flow rate can be calculated by counting the passing vortices. The higher the flow rate, the higher the frequency of the fluid measured.
Specification
| Measured Medium | Liquid, Gas, Steam |
| Medium Temp | -40℃~+200℃; -40℃~+280℃; 40℃~+350℃ |
| Nominal Pressure | 1.6MPa;2.5MPa;4.0MPa;6.4MPa(Other pressure can be custom,need consult supplier) |
| Accuracy | 1.0%(Flange), 1.5%(Insertion) |
| Measuring range ratio | 1:10(Standard air condition as reference) 1:15(Liquid) |
| Flow Range | Liquid:0.4-7.0m/s; Gas:4.0-60.0m/s; Steam:5.0-70.0m/s |
| Specifications | DN15-DN300(Flange), DN80-DN2000(Insertion), DN15-DN100(Thread), DN15-DN300(Wafer), DN15-DN100(Sanitary) |
| Material | SS304(Standard), SS316(Optional) |
| Pressure Loss Coefficient | Cd≤2.6 |
| Vibration Acceleration Allowed | ≤0.2g |
| IEP ATEX | II 1G Ex ia IIC T5 Ga |
| Ambient Condition | Ambient Temp:-40℃-65℃(Non-explosion-proof site); -20℃-55℃(Explosion-proof site) |
| Relative Humidity:≤85% | |
| Pressure:86kPa-106kPa | |
| Power Supply | 12-24V/DC or 3.6V battery powered |
| Signal Output | Pulse frequency signal2-3000Hz, Low level≤1V, high level≥6V |
| Two-wire system 4-20 signal(isolated output), Load≤500 |
Feature
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The measuring element of the vortex flow meter is simple in structure, reliable in performance, long in service life and low in maintenance.
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Matching all flange standards.
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Short body can be install easily at narrow areas.
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Remote display type can be installed underground with IP68 enclosure.
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Vortex flow meter has a wide measuring range, and the range ratio can generally reach 1:10.
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The volume flow of the vortex flow meter is not affected by thermal parameters such as the pressure, temperature, density or viscosity of the fluid being measured, and generally does not need to be calibrated separately, and can measure the flow of liquid, gas and steam.
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The vortex flow meter has no moving parts, and there is no throttling part that hinders the flow of fluid, so the pressure loss caused by it is small.
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The accuracy of vortex is up to 1.0%.
