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Products>>Flow>>RVAF10 Series Variable Area Flowmeters

RVAF10 Series Variable Area Flowmeters

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GENERAL

RVAF10 Series flowmeters for measurement of the volumetric or mass flow rate of liquids and gases is an all-metal flowmeter that operates on the float measuring principle. RVAF10 Series variable-area flowmeter is particularly suitable for difficult applications and environmental conditions.

FEATURES

  • Unique measuring tube and magnetic coupling structure
  • Full series of installation and various power supply
  • The indicator has a dual indication system
  • Convenient and scientific lead interface
  • A variety of indicator forms
  • Advanced self-damping indicator
  • Increase geomagnetic compensation
  • Powerful software functions
  • Superior anti-interference performance
  • Conveniently connected optoelectronic isolated output

    • SPECIFICATION

    Measuring ranges(100% values) Water@20℃, 1 to 200000L/h Air@20℃, 1.013bar, 0.03 to 3000m3/h
    Range ratio Standard 10:1, Special 20:1
    Accuracy Standard +/-1.5%, Special +/-2.0%
    Operation pressure Standard: DN15 to DN50 ≤ 40bar, DN80 to DN200 ≤ 16Bar Special: DN15 to DN50 ≤ 320bar, DN80 to DN200 ≤ 160Bar
    Connection Flanges, Sanitary clamp, Thread, Sanitary thread,other connection consult with us.
    Jacket connection DN15, DIN PN16 flange, other connection consult with us.
    OperationTemperature -20℃ to 450℃, -80℃to -20℃ 0℃ to 80℃ (PTFE Lining)
    Ambient temperature -40℃ to +85℃（remote）, -40℃ to +100℃ (local ), -30℃ to +60℃ ( Exia, Exd)
    Cable entry M20 x1.5 (M5, M6, M10 indicators） M16x1.5（M7, M8, M9 indicators）
    Power supply Standard :24VDC or 100 to 240VAC@50Hz/60Hz4 to 20 mA:12 to 32VDCAlarm: 24VDCNi-MH Battery 3.6V@9AH (3 years)
    Loading 600Ω(RLmax), 500Ω(Exia)
    Alarm output Upper and lower limit instant flow alarm, Optocoupler isolates Darlington output (internal power supply 24VDC，max. current 8mA，external internal power supply 200mA @ 30VDCLocal alarm: upper, lower limit or upper and lower limit instant flow alarm, reed switch value alarm (contact capacity 1A @ 30VDC), optional normally open and normally closed upper limit and lower limit alarm, maximum 60% range, min. 10% range of upper and lower limit alarm interval.
    Pulse output Optocoupler isolates Darlington output as cumulative pulse output (internal power supply 24VDC，max. current 8mA)
    Type of protection IP 67, NEMA 4X
    Explosion Proof ExiaⅡCT4, ExdⅡBT3-6 Gb
    Fluid Viscosity DN15:η ＜ 5mPa.s（S15.0 to S15.3） η＜ 30mPa.s （S15.4 to S15.10）DN25:η ＜ 250mPa.s DN50 to DN200：η ＜ 300mPa.sFor special viscosity fluid, please consult with us.