• Overview

    The DK32/34 is a variable area (VA) flowmeter for measuring low flow rates of liquids and gases. The tried and tested meter is particularly suitable for flow monitoring and dosing in gas analyser systems or on purge panels. Due to its robust all-metal design it can also be used in difficult process conditions with temperatures up to +200°C / +392°F or pressures up to 400 barg / 5800 psig. It is available with a metering valve as standard to accurately set the flow value.

    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 installation: Able to measure and display without auxiliary power supply
    • * Purgemeter with 2 optional limit switches for flow monitoring
    • * Various stainless steel and alloy sensor materials
    • * Optional surface passivation with SilcoNert®2000 for trace-level analysis
    • * Ingress protection IP65/66
    • * Full scale value for liquids: 1.6…150 l/h / 0.4…40 GPH
    • * Full scale value for gases: 16…4,800 l/h / 0.6…170 SCFH
    • * Turndown ratio 10:1
    • * Maximum measuring error: ±4% (acc. to VDI/VDE 3513-2) or ±3% of full scale
    • * Suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2) also in SIL 3 applications (type A device)
    • * Approved for hazardous areas

  • Specifications

    Depending on selected device configuration

    General information

    Product typeFlowmeter
    Product family nameDK
    Product positioningFor low liquid and gas flows
    Measurement principleVariable area float
    Measured mediaLiquids, Gases

    Operating conditions

    Process pressuremax. 220 barg/
    3190 psig
    Process temperature-40…+200°C/
    -40…+392°F

    Materials

    Measuring tubeAustenitic stainless steel (1.4404/316L), Austenitic alloy (2.4610/Alloy C4), Nickel alloy (2.4360/Alloy 400), Titanium alloy (3.7035/Ti-Grade 2), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Passivation with SilcoNert®2000
    GasketsPolytetrafluoroethylene (PTFE), Perfluoroelastomer rubber (FFKM), Fluoroelastomer rubber (FPM), DK34: none
    Process connectionAustenitic stainless steel (1.4404/316L), Nickel alloy (2.4360/Alloy 400), Austenitic alloy (2.4610/Alloy C4), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Titanium alloy (3.7035/Ti-Grade 2), Passivation with SilcoNert®2000

    Process connections

    Flange connectionsEN (1092-1): DN15…25
    ASME (B 16.5): ½…1"
    Thread connections

    Female:

    ¼ NPT, ½ NPT

    Others:
    Tube fittings

    Other connectionsSwagelok;Serto, Ermeto; Hose; Gyrolok

    Approvals/Standards

    Certificates/Approvals NuclearNuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)
    Certificates/Approvals ExATEX, cQPSus, IECEx, NEPSI, EAC Ex, INMETRO, KCs, UKEX
    Certificates/Approvals OthersCRN, NACE
    Certificates/Approvals SafetySIL 2

    Communication

    Analogue outputs4…20 mA
    Discrete outputsLimit switches
    Digital outputsHART®
KROHNE DK32/34 Variable area flowmeter
Variable area flowmeter for low liquid and gas flows
* Compact mechanical indicator, optional 4…20 mA/HART®7, MIN/MAX switches and needle valve
* Sturdy metal design: stainless steel or alloy
* Thread: G¼, ¼ NPT, etc.
* -40…+200°C / +392°F, max. 220 barg / 3190 psig
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