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Vortex Flow Meter

The WKF-LUGB vortex flow meter measures the volume flow, standard volume flow, or mass flow of gas, steam or liquid based on the Karman vortex principle.

  • Model: WKF- LUGB
  • MOQ: 1PCS
  • Payment: Wire transfer/ Credit card/ PayPal
  • Lead Time: 5-7 days
  • OEM/ODM: Available

vortex_flow_meter_7WKF-LUGB vortex flow meter is widely used in petroleum, chemical, metallurgy, heat, textile, paper and other industries for superheated steam, saturated steam, compressed air and general gases (oxygen, nitrogen and hydrogen, natural gas, coal gas, etc.), water and liquids (such as: water, gasoline, alcohol, benzene, etc.) measurement and control.

 

Principle of the Vortex Flow Meter

When a bluff vortex generator (choke body) is installed in the fluid, two regular rows of vortices are alternately generated from both sides of the vortex generator. This vortex is called the Karman vortex. According to the Karman vortex street principle, the flow rate in the tube is obtained, and the flow rate in the tube is calculated.

  • No moving parts, long-term stability, simple structure, and easy installation and maintenance;
  • The output of the sensor is pulse frequency, which is linear with the actual flow rate of the fluid being measured. The zero point has no drift. The performance is very stable. There are various structural forms, including pipe-inserted flow sensors;
  • High accuracy, usually the measurement accuracy of liquids is ± 1%; the measurement accuracy of gases is ± 1.5%;
  • The measurement range is wide, reaching 1:20 in the range of Reynolds numbers from 2×104 to 7×106;
  • Small pressure loss (about 1/4 to 1/2 of that of orifice flow meters), belonging to energy-saving flow meters;
  • The installation method is flexible. Depending on the different process pipes on site, it can be installed horizontally, vertically, or tilted at different angles.
  • It adopts an interference cancellation circuit and an anti-vibration sensor head, which has certain anti-environmental vibration performance.
  • Using ultra-low-power single-chip microcomputer technology, a 3V10AH lithium battery can be used for more than 5 years.
  • The non-linearity of the instrument coefficient is corrected by the software to improve measurement accuracy.
  • EEPROM is used to protect accumulated flow from power failure, and the protection time is longer than 10 years.
Parameter Description
Nominal diameter(mm) 15、20、25，40，50，65，80，100，125，150，200，250，300，(300～1000 insertion type)
Nominal pressure(MPa) Standard: DN15-DN200 4.0，DN250-DN300 1.6
Medium temperature(℃) Piezoelectric:-40～150，-40～260，-40～330；Capacitive: -40～400，-40～500
Body material 1Cr18Ni9Ti，(other materials please contact before order)
Allowable vibration acceleration Piezoelectric: 0.2g      Capacitive: 1.0～2.0g
Accuracy ±1%R，±1.5%R；insertion type: ±2.5%R，
Range ratio 1：6～1：30
Voltage Sensor: DC +12V，DC +24V；Transmitter: DC +12V ，DC +24V；Battery-powered type: 3.6V
Output Square wave pulse (excluding battery-powered type): high level ≥5V, low level ≤1V; current: 4～20mA
Pressure loss coefficient Conforms to JB/T9249 standard　Cd≤2.4
Explosion-proof Intrinsically safe: ExdⅡia CT2-T5, Flame-proof type: ExdⅡCT2-T5
Protection level General IP65, Submersible IP68
Environmental conditions Temperature -20℃～55℃, relative humidity 5%～90%, atmospheric pressure 86～106kPa
Applicable medium Gases, liquids, vapours
Transmission distance Three-wire pulse output type: ≤300m, two-wire standard current output type (4-20mA) ≤1500m; load resistance ≤750Ω;  RS485/HART≤1200m.

A vortex flow meter can be widely used for measuring the flow of water and drainage in various large, medium, and small pipelines, industrial circulation, sewage treatment, oils and chemical reagents, as well as compressed air, saturated and superheated steam, natural gas, and various media.

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