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  • Overview

    The OPTIFLUX 4100 is an electromagnetic flowmeter (EMF) for a wide range of standard process applications with aggressive and abrasive liquids. It enables reliable flow measurement even under harsh process conditions with temperatures up to +180°C / +356°F, low conductivity (≥5 µS/cm) and solid content (up to 10%). This makes the flowmeter particularly suitable for applications involving corrosive chemicals, sewage and drilling mud or mining sludge. Installation in measurement chambers subject to (constant) flooding is also possible using the optional IP68 / NEMA 6P rated version.

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

    • Bi-directional flow measurement over a wide dynamic range (turndown ratio: 1000:1)
    • PTFE, PFA, ETFE, hard rubber, soft rubber or PU liner: excellent chemical and abrasion resistance
    • Wide range of electrode materials
    • Special designs, sizes, inner diameters and liner thicknesses on request
    • Standard measurement accuracy: ±0.3% or ±1mm/s of measured value (MV)
    • Optional external coatings for offshore or subsoil installation (also acc. to ISO 12944)
    • Diagnostics incl. conductivity, electrode error, ambient and process temperature etc.
    • Full bore design: No moving parts, no wear, no pressure loss
    • For hazardous areas: ATEX, IECEx, FM, CSA
    • On-site verification of flowmeter with OPTICHECK service tool

  • Specifications

    Depending on selected device configuration

    General information

    Product typeFlowmeter
    Product family nameOPTIFLUX
    Product positioningFor standard applications with abrasive and aggressive liquids
    Measurement principleElectromagnetic
    Measured mediaLiquids

    Operating conditions

    Process pressuremax. 40 barg/
    580 psig
    Process temperature-40…+180°C/
    -40…+356°F

    Materials

    LinerPerfluoroalkoxy alkane (PFA), Polytetrafluoroethylene (PTFE), Polyuretane (PUR), Hard rubber, Ethylene tetrafluoroethylene (ETFE)

    Process connections

    Flange connectionsEN (1092-1): DN2.5…1200
    ASME (B 16.5): ⅒…48"
    JIS (B 2220): 2.5…1000A
    Pressure rating (EN 1092-1)PN40
    Pressure rating (JIS B 2220)20k
    Pressure rating (ASME B 16.5)Cl 300#, Cl 600#

    Approvals/Standards

    Certificates/Approvals ExATEX, IECEx, NEPSI, FM, CSA
    Certificates/Approvals HygienicFDA
    Certificates/Approvals MarineABS, BV, CCS, DNV, KR, LR, NK, RINA, CRS, IRS, PRS, RS

    Communication

    Analogue outputs4…20 mA
    Discrete outputsPulse, Frequency, Status
    Digital outputsHART®

KROHNE OPTIFLUX 4100 Electromagnetic flowmeter
Electromagnetic flowmeter for standard applications with abrasive and aggressive liquids
* Chemically resistant, for liquids (>5 μS/cm) with solid content (≤10%)
* Up to +180°C / +356°F
* Flange: DN2.5…1200 / ⅒…48", max. PN40 / ASME Cl 600
* 4…20 mA, pulse, frequency, status, HART®
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