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Shanghai Cixi Instrument Co., Ltd.

Flow Meter, Air Flow Meter, Water Meter manufacturer / supplier in China, offering Magnetic Vortex Flow Meter/Vortex Flow Meter, High Quality Pressure Transmitter, Turbine Flow Sensor for Liquid and so on.

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Magnetic Vortex Flow Meter/Vortex Flow Meter

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Min. Order: 1 Piece
Production Capacity: 1000PCS/Month
Transport Package: Carton
Payment Terms: T/T, D/P, Paypal, Western Union

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Basic Info
  • Model NO.: cx
  • Main Application: Water, Wastewater, Diesel Fuel, Fuel Oil, Nature Gas, Corrosive Liquid/Gas
  • Sensor: Tube/Flange
  • Measurement Object: Closed Pipeline
  • (Mainland) Brand Name: Gn
  • Exported: More 80 Countries
  • Maintenance: Less and Easy
  • Specification: CE SGS
  • HS Code: 9026100000
  • Accuracy: >±1%
  • Size: DN50-100
  • Application: Environmental Protection
  • Certification: CE, SGS, ISO
  • Warranty: One Year
  • Price: Competitive
  • Trademark: GN
  • Origin: Shanghai
Product Description
Working principle
To install a vortex generator(bluff body)in the fluid,which can produces regular vortex at both sides of the vortex generator altematively.Such vortex is called Karman Vortex.Vortex trains are asymmetrically arranged at the downstream of the vortex geberator. Suppose the generating frequency of the vortex is f,the average speed of the incoming flow of the tested medium is V,the head-on width of the vortex generator is d,and the diameter of the flowmeter is D,and base on the principles of Karman Vortex,the following relations will be obtained:  
    cart(1)
                   f=StV/d           Formula (1)     
 
 
Note:f- Suppose the generating frequency of the vortex
     St-Strouhal number
     V-average flow velocity at both sides of the vortex generator
d- the vortex geberator body width
 
Thus, by measuring the Carmen frequency of vortex separation of instantaneous flow rate can be calculated. Among them, Strouhal number ( St ) is a dimensionless unknown, Figure ( two) said the Strouhal number ( St ) and Reynolds number ( Re ) relationship.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

                                    chart(2)
In the curve St = 0.17straight section, whirlpool release frequency and velocity proportional to, namely the vortex flow sensor measurement range. As long as the detected frequency f can be obtained within the tube by the flow rate of the fluid, flow velocity and volume flow rate V. The measured pulse number and volume ratio, called the instrument constant ( K ), see type (2)
                      K=N/Q(1/m³)             Formula (2)
K=Instrument constant(1/m³)
N=Pulse number
Q=Volume flow(m³)
 
 
Main technical index                                 Unit(1)
Nominal diameter(mm)25,40,50,65,80,100,125,150,200,250,300,(300~1000 Insert type)
Nominal pressure (MPa)DN25-DN200 4.0(>4.0 Supply agreement),DN250-DN300 1.6(>1.6 Supply agreement)
Medium temperature(ºC)Piezoelectric type:-40~260,-40~320;Capacitance type
: -40~300, -40~400,-40~450(Supply agreement)
Body material1Cr18Ni9Ti,(Other materials supply agreement)
Allowable vibration accelerationPiezoelectric type:0.2g     Capacitance type:1.0~2.0g
Accuracy±1%R,±1.5%R,±1FS;Insert type:±2.5%R,±2.5%FS
Range of1:6~1:30
Power supply voltageSensor:+12V DC,+24V DC;Transmitter:+12V DC ,+24V DC;Battery type:3.6V Battery
Output signalSquare wave pulse ( not including the battery power supply type ): high level or low level5V,1V; current: 4~ 20mA
Pressure loss coefficientIn line with the JB / T9249standard Cd = 2.4
Explosion proof marksIntrinsic safety type: Exd IA CT2-T5 flameproof type: Exd CT2-T5
Protection gradeThe ordinary IP65  diving type IP68
Environmental conditionsTemperature - 20~ 55,5% ~ 90% of relative humidity, atmospheric pressure is 86 ~ 106kPa
Applicable mediumGas, liquid, steam
Transmission distanceThree wire system pulse output type: < 300m, two line standard current output type (4 ~ 20mA ): load resistance less than 750ohm
 
 
 
 
 
 
 
 
 
 
Table (2) reference conditions of vortex flow sensors flow rate range table
Meter diameter
(mm)
LiquidGas
Measuring range
(m3/h)
Output frequency range(Hz)Measuring range
(m3/h)
Output frequency range(Hz)
251.2~1625~336
 
8.8~55190~1140
402~4010~20027~205140~1040
503~608~16035~38094~1020
806.5~1304.1~8286~110055~690
10015~2204.7~69133~170042~536
15030~4502.8~43347~400033~380
20045~8002~31560~800022~315
25065~12501.5~25890~1100018~221
30095~20001.2~241360~1800016~213
(300)100~15005.5~87
 
1560~1560085~880
(400)180~30005.6~872750~2700085~880
(500)300~45005.6~884300~4300085~880
(600)450~65005.7~896100~6100085~880
(800)750~100005.7~8811000~11000085~880
(1000)1200~17005.8~8817000~17000085~880
>(1000)Agreement
Agreement
Note: (300) to (1000) diameter for insertion type

4

  
 


chart(3)

Instrument installation dimensions: see figure ( five ), map ( six)
 
Caliber
()(mm)
(mm)
ABCCH
15~257055390455
4085
 
80385440
508590390450
6585105400470
8090120420480
10085140440500
12595168465530
150100194490560
200102248545610
250115300600660
300130350650710


 









B




 
Caliber (mm)DN250DN300DN400DN500DN600DN800-
2000
L60.55865.560.555.545.5


L

                                                            
 
 














Sensor



Direction indicator








Globe valve




Flange



Measuring head




chart(4)
 

 
 




 

                                    chart(5)
 
 
 
 
 
 
 
 
Vortex flow meter selection table
SpectrumExplain
LU
Vortex flow meter
G
Sensor
Detection modeB
Piezoelectric sensor
E
Capacitance type sensor
Connection mode
1Only the full pipe typeFlange connection
2Only the full pipe typeThe flange clamp type
3Only to insert typeSimple insertion type
4Only to insert typeInsertion type ball valve
Measurement of medium
2

Liquid
3

Gas
4

Steam
Nominal diameter
02

30
 
 
 
DN25
              unit:mm
DN300
The use of the environment
P
Ordinary type
B
Explosion proof type
Output signal
1
Pulse output
2
4 ~ 20mA output current, liquid crystal display
3
RS-485 communication
4
Battery powered, with temperature, pressure compensation
5
The temperature and pressure compensation for one,4 ~ 20mA current output type
6
The temperature and pressure compensation integrated, battery power supply type
Type descriptionFor example: LUGE2405-P2 full pipe type capacitive vortex flow meter, a flange clamp connection, medium for steam
Instrument path for DN50, general 4~ 20mA output current signal












 
2. Sensor the nominal size of the code table
 
Nominal diameter  DN  mm253240506580100125150200250
Tag number0203040506081012152025
Nominal diameter  DN mm300350400450500600700800100012001500
Tag number3035404550607080A0A2A5
 
 
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