* -20…+100°C / -4…+212°F; max. 10 barg / 145 psig" /> * -20…+100°C / -4…+212°F; max. 10 barg / 145 psig"> * -20…+100°C / -4…+212°F; max. 10 barg / 145 psig" /> * -20…+100°C / -4…+212°F; max. 10 barg / 145 psig">

  • Overview

    The VA40 is a glass tube variable area (VA) flowmeter for flow measurement of liquids and gases. The all-purpose flowmeter is suitable for all basic applications up to +100°C / +212°F and max. 10 bar / 145 psi. Typical applications include flow measurement of flushing, purging or inert gases or heating and cooling circuits.

    The VA40 operates without auxiliary power supply. The measuring cone, protected by a metal sleeve with a viewing glass, makes it easy to directly read the flow and to observe the medium. The VA meter can also be equipped with two optional limit switches (MIN/MAX) or analogue output (4…20 mA). The flowmeter comes with many process connections and can be used in hazardous areas.

    Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.

    • * Simple, low-cost measuring principle without auxiliary power
    • * For direct reading of the flow and observation of the medium
    • * Optional MIN/MAX flow switches (SIL 2 conform acc. to IEC 61508-2) or 4…20mA for recording and control
    • * Full scale value for liquids: 0.4…10,000 l/h / 0.1…2,650 GPH
    • * Full scale value for gases: 7…310,000 l/h / 0.25…11,000 SCFH
    • * Maximum measuring error: ±1% (acc. to VDI/VDE 3513-2) or ±1% of full scale
    • * Turndown ratio 10:1
    • * Use in hazardous areas
    • * Suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2) also in SIL 3 applications (type A device)
    • * Available as food and pharmaceutical variant (with FDA compliant materials)


  • Depending on selected device configuration

    General information

    Product typeFlowmeter
    Product family nameVA
    Product positioningFor basic applications
    Measurement principleVariable area float
    Measured mediaLiquids, Gases

    Operating conditions

    Process pressuremax. 10 barg/
    145 psig
    Process temperature0…+100°C/
    +32…+212°F

    Materials

    Measuring tubeBorosilicate glass
    GasketsEthylene propylene diene monomer (EPDM), Perfluoroelastomer rubber (FFKM), Fluoroelastomer rubber (FPM), Nitrile butadiene rubber (NBR)
    Process connectionAustenitic stainless steel (1.4404/316L), Polyvinylidene fluoride (PVDF), Chromised steel

    Process connections

    Flange connectionsEN (1092-1): DN15…50
    ASME (B 16.5): ½…2"
    Thread connectionsFemale:
    G½, G¾, G1, G1½, G2
    ½ NPT, ¾ NPT, 1 NPT, 1½ NPT, 2 NPT
    Other connectionsHose: DN15, DN25, DN40, DN50
    Hygienic connectionsClamp (DIN 32676): DN15, DN25, DN40, DN50
    Clamp (ISO 2852) 17.2, 25, 40, 51
    Tri-Clamp: ½", 1", 1½", 2"
    Threaded ferrule (DIN 11851): DN15, DN25, DN40, DN50
    Threaded ferrule (SMS 1146): 25 mm, 38 mm, 51 mm

    Approvals/Standards

    Certificates/Approvals NuclearNuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)
    Certificates/Approvals ExATEX, UKEX
    Certificates/Approvals HygienicFDA, EC 1935/2004
    Certificates/Approvals SafetySIL 2

    Communication

    Analogue outputs4…20 mA
    Discrete outputsLimit switches
KROHNE VA40 Variable area flowmeter
Variable area flowmeter for basic applications
* With glass tube, MIN/MAX switches and 4…20 mA
* Low pressure loss for gas applications
* Flange: DN15…50 / ½…2"; also NPT, G, hygienic connections, etc.
* -20…+100°C / -4…+212°F; max. 10 barg / 145 psig
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