Deskripsi
Vortex Flow Meter Magnos
Vortex flowmeter works on the karman vortex street principle that swirls generated by a bluff body in the pipe. The number of swirls are proportional to the volumetric flow in the pipe. Vortex flowmeter widely used for gases, steam and liquid applications. It is ideal for measuring saturated and superheated steam in large facilitles to improve steam production efficiency.
Principle
When the fluid in the pipeline passes the burble generator (triangular prism), burble will generate due to the acceleration of partial flow rate. The burble will arise alternatively in two burble lines, which is called karman vortex.
The releasing frequency of karman vortex depends on the size of triangle prim and flow rate of fluid, while independent of the medium feature parameter, such as the temperature, pressure, it can be indicated by the following formulas:
F=sR*v (1-1.27*d/D) Q=3600*F/K
F The releasing frequency of karman vortex
Sr Strouhal number (unit: dimensionless)
V Medium flow rate (m/s)
d The width of triangle prim
D Vortex meter inner diameter (m)
Q Instantaneous volume flow rate (m3/h)
K Vortex meter coefficlent (unit pulse number/m3)
M Instantaneous quality flow rate (kg/h)
P Fluid density (kg/m3)
Application
Application in the chemicals and petrochemicals Industries, for example, In power generation and heat-supply systems involve widely differing fluids: saturated steam, superheated steam, compressed air, nitrogen, liquefied gases, flue gases, carbon dioxide, fully dermineralized water, solvents, heat-transfer oils, boiler feedwater, condensate, etc.
Features
a. Integrated pressure and temperature compensation.
b. 4-20mA, pulse with HART or pulse with RS485 are selectable ( optional ) .
c. Wide temperature range up to highest temperature 350°C ( optional ) .
d. Adopt japan OVAL technology and design.
e. Embedded sensor, 4 piezo-electric crystal encapsulated inside the sensor.
f. No moving parts, no abrasion, non –wearing parts inside, fully welded SS304 body (SS316 selectable).
