1.Karman vortex street principle.
2.Medium:liquid,gas,steam
3.flange connection
4.intrinsic safety
5.insertion type
Port: Shanghai
Minimum Order Quantity: 1 Set/Sets
Supply Ability: 100 Set/Sets per Month
Payment Terms: L/C,T/T,Western Union
Contact SupplierPackaging Detail: Carton or polywood cases.
Delivery Detail: 5 working days
1.Working Principle:
The vortex flowmeter operates on the basis of Karman vortex street principle. If put a vertical cylinder in flow fluid,during the range of Reynolds number will alternate to form a regular vertex behind the cylinder two sides,named as Karman vortex street.The direction of vortex street is inward,up will form a clockwise rotation,down will form a counter-clockwise rotation,the frequency in single side in proportion to flowrate, in inverse proportion to the diameter of vortex producer,the relationship of them as following:
f=St×v/d
In the formula:St-Jack straw Hal number;f-frequency product by single side vortex;v-flowrate;d-diameter.
Instrument parameters K: a ratio of separation pulse amount of vortex to the volume amount:
K=N/V
In the formula:
K-instrument coefficient (pulse 1/m3)
N-pulse number (time)
V-volume amount
The relationship between the vortex separation frequency and liquid flow is as follows:
f=K×Q
In the formula:
f-frequency (time)
Q-flow (m3/h)
By testing the vortex separation frequency, the liquid flow in the pipe can be measured.
2.Company Profile
CHANGZHOU CHENGFENG FLOWMETER CO.,LTD was established in 1979,our company is the professional manufacturer of flowmeters,thermometers,liquid level meters,transmitters and so on.The main products are contain of LZB/LZJ(-F)glass tube flow meter,LZB-W(B)micro type glass tube flow meters,G.R.F10/20/30 glass tube flow meters,LZZ/LZD(-F)metal tube flow meters,organic panel type pure water flow meters,UHC magnetic flap liquid level meters,LUGB/LUCB vortex street flow transmitter,LDG electromagnetic flowmeters,LWGY/LWY turbine flowmeters,WSS series bimetallic thermometer and so on about five series and five hundred kinds products.
3.Technical Parameter
Nominal Diameter | 20/25/40/50/80/100/150/200/250/300 | Signal Output | Pulse,4~20mA |
Material | SS304 | Ambient Temperature | -10~+55°C |
Nominal Pressure | ≤2.5MPa | Power | +24V |
Medium Temperature | -40~+250°C,-40~+250°C | Signal Wire | RVVP3x0.5,RVVP2x0.5 |
Accuracy | 0.5,1.0,1.5 | Remote Distance | 1000m |
Rangeability | 1:10 | Safety Barrier | JHA-H2,JHA-B |
Pressure Loss Factor | Cd less than 2.4 |