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  • Place of Origin: Liaoning, China (Mainland)
  • Brand Name: PCAI
  • Model Number: LUGB serises
  • Products Name: LUGB Vortex steam flow meter
  • Accuracy: Liquid Gas ±1.0% of reading Vapor Stream 1.5%
  • Housing: Standard - 304 Stainless Steel
  • Sensor: Pulse signal (Low Level: ≤1V; High Level: ≥6V)
  • Transmitter: 4 to 20 mA DC current signal
  • Signal Transmission Distance: ≤500 m
  • Electrical Connections: ISO M20X1.5 Female
  • Explosion Proof Level: Standard ExdIIBT6
  • Power Supply: Sensor +12V DC (Optional: +24V DC) Transmitter +24V DC
  • Vibration: ≤1.0 g

Packaging & Delivery

Packaging Details carton or wooden case
Delivery Time 3Days


Vortex steam flow meter
1.Accuracy: Liquid Gas 1% Steam 1.5%
2.Temperature:-20oC to +350C
3.Measure :Liquid Gas Steam

LUGB Vortex steam flow meter


Product Description

Vortex flow meter   Steam flow meter

Signal OutputPulse4-20mAN/A4-20mA

Optional: 4-20mA/Pulse

Power Supply24VDC±15%24VDC±15%Lithium Battery24VDC±15%24VDC±15%
CommunicationN/AN/AN/AOptional: RS485Optional: RS485

Liquid: 1.0%

Gas: 1.0%

Steam: 1.5%

Local DisplayNoneYesYes  temperature and pressure compensation
Housing MaterialSS304
Explosion ProofOptional: ExiaIICT5 or ExdIIBT6
Protection LevelIP65
DiameterDN15 to DN300
End ConnectionFlange or Wafer
Pressure RatingStandard: 1.6 MPa; Optional: 2.5MPa
Fluid Temperature1. Standard: -40℃~250℃; 2. High Temperature: -40℃~350℃
Ambient Temperature-20℃~60℃

Working Principle 

Non-streamline vortex-maker be set in fluid(anti-flow part),then two regular vortex would be come out ,from two sides of the vortex-maker in turn,so this kind of vortex be called as Karman vortex street,Chart I as follow.

                                chart I

Vortex is not flowing symmetrically under vortex-maker set .As if, set frequency of vortex is f,the speed of test medium is V,inlet face width of vortex-maker is d,Past part diameter is D,as the principle of Karman vortex street ,as follow:

                         f=StV/d                 I


f-The Karman vortex street frequency which one side of vortex-maker

St-Strouhal number(dimensionless number)

V-mean flow rate

d-the width of vortex-maker

So, check the separate frequency of Karman vortex street to know the instant capacity(flow) .among, Strouhal number(St)is dimensionless number,

Chart II   Show the relation of, Strouhal number(St) & Reynolds number (Re)


Straightness part in curve(St=0.17),free frequency & flow rate of vortex is direct ratio, it means flow sensor range. so just check out frequency (f),we can get the flow rate inside pipe, then as the flow rate(V) to take volume flow, the ratio record of impulse & volume, called as(K),as follow(2)

                       K=N/Q(1/m³)             (2)

Model:K=instrument constant(1/m³).

N=impulse number

Q=volume flow(m³)



Packaging & Shipping


Company Information

Pioneer Instrument is an ISO9001 quality certified company specializing in the design and manufacture of a proprietary range of Gas turbine flowmeter, liquid turbine (impeller) flowmeter, vortex flowmeter, magnetic flowmeter and dedicated electronic flow instrumentation. Moreover, We agenting Germany brand KROHNE flow meter .

The meters measure the flow of clean liquids and are produced in a wide variety of materials and configurations to suit most markets including the food, chemical, cosmetic, ink, pharmaceutical, paint, petroleum and additive industries. Now the sanitary instruments include sanitary turbine flowmeter, sanitary magnetic flowmeter and sanitary temperature & pressure sensors.

Our aim is to provide a metering solution that helps our customers achieve operational improvement through their production capability, usually in the form of reduced energy usage, improved product quality, lower emissions and greater production throughout. Reducing emissions, carbon footprint, and your company's impact on the environment is our goal. Not only will this have a strong social and environmental impact but also a positive economic impact today and sure to be better into the future. www.pcaico.com



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