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kaifeng Vortex precession flowmeter made
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Product Details
Place of Origin | Henan, China | Brand Name | QINGTIANWEIYE | |
Model Number | LUGB-2 |
1:Export plywood packing with foam liner.with DN150MM
2:Carton box with thin film wrapped,if caliber less than 150mm
3:Export standard packing according to buyer's requirements
Product Description
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The vortex precession flowmeter using the latest micro-processing technology, strong functions, wide range of flow rate, the operation simple repair, installation is convenient to use, the main technical indicators have reached the advanced level of similar foreign products. Widely used in petroleum, chemical, electric power, metallurgy, coal and other industries of various gas metering.
vortex precession flowmeter- vortex flowmeter Technology index:
1. The accuracy level: 1.0
2.Nominal pressure: 1.6MPa2.5MPa 4.0 MPa etc more than
3. Be measured medium temperature: -40°C~350°C
4. The pressure loss: resistance coefficient CD≤2.4
5.power supply:12~24 VDC
6.EX-proof Class: ExiallCT6 (intrinsically safe explosion-proof)
7.output signal: Voltage pulse low level≤ IV high voltage≥ 6 V standard current signal 4 ~ 20 mA
Flowmeter caliber and determine can be useful for flow range
(one)gas, liquid
Vortex flowmeter high limit flow general can not be affected by medium pressure, temperature and etc, low limit flow depends on the operation condition of the medium density and viscosity. Therefore, determine the flow range is actually determine actual usable the low limit of flow. The best working flow in sensor range 1/2- 2/3 places.
Step one: according to the practical use the flow and check out the table 3 preliminary ensure flowmeter caliber. Commonly used in flow should select the high limit 50% ~ 70%. Pay attention to the gas is to point to working condition flow , such as for standard condition flow please use formula (3) will be converted to the working condition flow.
In formula
Q—working condition flow
QN—standard condition flow
PN---standard atmospheric pressure(0.101325MPa)
P---- Under the working condition of medium absolute pressure(the pressure of meter + atmospheric pressure)
T------ Under the working condition of medium absolute temperature[(273.15+t)K]
t------- Under the working condition of medium temperature(°C)
Tn-----Standard absolute temperature(273.15 K)
Step 2 according to the formula (4) calculate by working condition density of medium decision the low limit of flow QPu
In formula
Qp-----Under working condition density ,the medium low limit of flow.
Q0----the list of water or air low limit of flow (Liquid check water, gas check air)
P0----reference the medium of density, water 1000kg/m3 air 1.205 kg/m3
p----- Measured the medium of working condition density(kg/m3)
When the medium of density is bigger, the medium low limit of flow is lower
Step 3 according to the formula (5) calculate by working condition kinematic viscosity of medium decision the low limit of flow Qv
In formula
Qv---- Under working condition kinematic viscosity,the medium low limit of flow.
Q0----the list of water or air low limit of flow (Liquid check water, gas check air)
v----- Measured the working condition kinematic viscosity of medium
V0----reference the medium of kinematic viscosity ,water:1x10-6m2/s, air 15x10-6m2/s,
Kinematic viscosity and dynamic viscosity the conversion formula is as follows
In formula
V---- Kinematic viscosity(m2/s)
n----dynamic viscosity [kg/(m.s)]
p--- density(kg/m3)
When the kinematic viscosity of medium is less, be measured low limit of flow is lower
Compare Qp and Qv, ensure available low limit of flow and linear low limit of flow
Qp <Qv, the measuring range of flow is Qp~Qmax,linear range of flow is Qp~Qmax
Qp ≥Qv,the measuring range of flow and linear range of flow are Qp~Qmax
Qmax is point to the provisions in table 3 of the high limit of flow. Liquid maximum velocity should be less than 10 m/s, gas maximum velocity should be less than 70 m/s. High viscosity liquid of linear low limit flow were much higher than water, such as requirement of the low limit flow is lower, then not suitable for vortex flowmeter use.
(Two)steam:
When the user measurement medium is steam, commonly used mass flow measurement unit, such as t/h or kg/h, etc. Because of the steam in different of temperature and pressure ,the density is different, so the steam flow range can be calculated by formula (7)
Step 1 From the table 3 found air flow range of corresponding caliber flowmeter
Step 2 according to the steam pressure and temperature parameters, check the pertinent data get the density of steam.
Step 3 the formula (7) calculation the low limit flow of flowmeter
In formula
Q,p—Measured flow and density of steam
Q0,P0—Reference the flow and density of air(1.205kg/m3)
Step4. Confirm the high limit flow, the high limit flow velocity of steam should be less than 70m/s
Users also can check the table 4 and get the flow range of different carliber flowmeter measurement of saturated steam, or put the superheated steam density into the table 5 and calculate the flow range of different caliber flowmeter has been measured steam
When measuring the quality flow of steam, the quality flow measurement system is composed of sensor with the measuring temperature and measuring pressure element . Measuring saturated steam should add platinum resistance or pressure transmitter; Measuring the superheated steam should simultaneously add platinum resistance and pressure transmitter.
We have established nice relationship with so many expresses,such as DHL,Fedex,TNT etc.
We sure that your products will get the best protection,and we will send to you hand with the
fastest speed.For sure that electromagnetic flow meter would not damaged by nature factors,we package it by wooden case if Diameter is larger than 150mm,or use carton.
From the raw material to the finished production we have the very strict and serious procedure to guarantee our products get to the different quality requirements to provide our customers high quality products, first-class service. The sale of products provides 12-month warranty and lifetime tracking service
We are Kaifeng Qingtianweiye Flow Instrument Co., Ltd,a subsidiary of listed company Henan SunTront Tec Co.,Ltd.Our head office is a listed company since 2011 and its main products is intelligent electricity meters,while Our company mainly engaged in electromagnetic flow meter.
The total area of our company is 15000 square meters,and the building area is 6000 square meters.Our company have five utility model patents,three software copyrights.And we also have production qualification and liquid calibration settings for flow meters from Dn25mm to DN2000mm.We have strong R&D capability.Our company and our head office have large quantity of running water industrial users,and we also have strong marketing capabilities on battery powered electromagnetic flow meter.We are expecting to cooperate with manufacturer who can provide battery powered flow converter,or through expand cooperation in various modes.To develop the Chinese market and international market of battery powered flow meter together.To learn from each other and to achieve win-win situation.
We are expecting sincere cooperation.If you have interest,please feel free to contact us at any time.We are looking forward to hearing from you
Company Profile

Company Profile Exported to more than 30 COUNTRIES around the global; 500 SETS/MONTH production capacity; More than 10 YEARS MANUFACTURING EXPERIENCE; 5 Categories main products; the first company who own FIVE SETS CALIBRATION SYSTEMS in China, enjoys Class 0.2 high accuracy can equal to the world famous brand SIEMENS, ABB,ETC; 8 national patents;etc. All above makes KAIFENG QINGTIANWEIYE FLOW INSTRUMENT CO.,LTD. Our Advantages - Class 0.2 accuracy Until now, our company have installed DN10~DN50 & DN 65~DN150& DN800~DN2200 standard volumetric method with maximum flow 16000m3/h, DN80~DN300 & DN350~DN700 MT MASS method water flow standard devices and one bye one in the past years and have proven QINGTIAN as the recognized pioneer and world leading provider of high quality Process Control Instrumentation for Flow, Level, Temperature, Pressure,etc. Customized Solutions + Global Presence = Peace of Mind QINGTIAN's best of breed solution with world's major end users, QINGTIAN's proven products have been carefully customized to meet the requirements of: - Flow instrument: electromagnetic flow meter, vortex flow meter, turbine flow meter, ultrasonic flow meter, rotameter etc; - Flow meter calibration equipment , test bench machine; - Water Treatment Plant Control System etc; - Radar Level Meter etc. Kaifeng qingtian is committed to providing advanced state-of-the-art renewable solutions that are tailored to satisfy even the most unique and specific needs to the global customers.
Contact Us
- Kaifeng Qingtianweiye Flow Instrument Co., Ltd.
- Contact nameJack Hu Chat Now
- Phone0086-371-27880299
- AddressNo.1, Wangbai Road, Huanglong Industrial Zone, KaifengCity,henan province,China, Kaifeng, Henan
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