KRAL Flowmeters OMS Series.

Stainless steel design for demanding media.

When selecting a flowmeter for demanding fluids, the issue of material resistance always arises. The KRAL flowmeter OMS series is a stainless steel design for low and high viscous media, equipped with ball bearings or plain bearings depending on the application.

Your benefits.

  • High accuracy positive displacement meter.
  • Low service costs and long lifespan with KRAL products.
  • Extremely robust liquid flow meter.
  • Stabilization zones unnecessary.
  • Low friction and minimal loss of pressure.
  • Very compact design of the measuring unit.
  • For harsh industrial conditions.

Application examples.

  • Dosing of resin, paints, adhesives.
  • Coating of propellers in wind power turbines.
  • Insulating materials.
  • Greases and waxes.
  • Water volumetric flow measurements.

Materials.

  • Housing: Stainless steel.
  • Screws: Stainless steel (coated for high viscosity media).
  • Bearings: Ball or sliding bearings.
  • Gasket with ball bearings: Viton®.
  • Gasket with sliding bearings: Teflon®.
  • Technical data.
    Technical data OMS-020 OMS-032 OMS-052 OMS-020
    Media   Low viscosity Low viscosity Low viscosity High viscosity
    Nominal diameter DN inch ¾ 1 1 ½ ¾
    Flow rate l/min Qmax 45 150 525 -**
      Qnom 30 100 350 10
      Qmin 0.6* 2.0* 7.0* 0.04*
    Max. pressure bar 185 185 120 400
    Temperature °C -20 to +150 -20 to +150 -20 to +150 -20 to +80
    Viscosity mm²/s 1 to 10² 1 to 10² 1 to 10² 10² to 10⁶
    Precision of measurement value ±0.1 %* ±0.1 %* ±0.1 %* ±0.5 %
    Repeatability   ±0.01 % ±0.01 % ±0.01 % ±0.01 %
    K-factor P/I 1,280 468 142 66,000
    Frequency at Qnom Hz 640 780 828 11,000
     * Information in the case of non-lubricating media on request.  
    ** Due to the wide viscosity range from 100 to 1,000,000 mm²/s, the max. 
        flow rate cannot be given across the board.
  • Sensor.
    Sensor BEG 44A BEG 47D** / BEG 47E**
    Application   High pressures,
    broad temperature range
    Ex-range
    K-factor   K2 K1
    Signal   PNP Namur
    Temperature [°C] -25 to +120 -25 (-40) to +100
    Max. pressure [bar] 420 40
    **dependent on temperature
  • Operating instructions.

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    • Do you know the exact number of the operating instructions/product information sheet? Then enter it in the field No. Document.

     

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    No. Document

    Results

    No. Document
    Product
    Series
    Seal/Design
    Version
    OIK 14
    OIK 14
    Screw pump
    K
    Mechanical Seal
    30.11.2022

    OIK 14 | Screw pump | K | Mechanical Seal

    Version
    DE
    EN
    30.11.2022
    OIK 07
    OIK 07
    Screw pump
    K
    Radial shaft seal
    30.11.2022

    OIK 07 | Screw pump | K | Radial shaft seal

    Version
    DE
    EN
    30.11.2022
    OIK 09
    OIK 09
    Screw pump
    K
    Magnetic coupling
    30.11.2022

    OIK 09 | Screw pump | K | Magnetic coupling

    Version
    DE
    EN
    30.11.2022
    OIK 10
    OIK 10
    Pump station
    EKL/EKS
    16.06.2021

    OIK 10 | Pump station | EKL/EKS | –

    Version
    DE
    EN
    16.06.2021
    OIL 01
    OIL 01
    Screw pump
    L
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OIL 01 | Screw pump | L | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OIL 02
    OIL 02
    Screw pump
    L
    Magnetic coupling
    30.11.2022

    OIL 02 | Screw pump | L | Magnetic coupling

    Version
    DE
    EN
    30.11.2022
    OIL 03
    OIL 03
    Pump station
    ELL/ELS
    16.06.2021

    OIL 03 | Pump station | ELL/ELS | –

    Version
    DE
    EN
    16.06.2021
    OIC 01
    OIC 01
    Screw pump
    CK
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OIC 01 | Screw pump | CK | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OIC 02
    OIC 02
    Screw pump
    CL
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OIC 02 | Screw pump | CL | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OIC 10
    OIC 10
    Screw pump
    CG
    Magnetic coupling
    30.04.2023

    OIC 10 | Screw pump | CG | Magnetic coupling

    Version
    DE
    EN
    30.04.2023
    OIC 13
    OIC 13
    Screw pump
    CL
    Magnetic coupling
    30.11.2022

    OIC 13 | Screw pump | CL | Magnetic coupling

    Version
    DE
    EN
    30.11.2022
    OIC 18
    OIC 18
    Screw pump
    CG
    Mechanical seal / Radial Shaft Seal
    30.04.2023

    OIC 18 | Screw pump | CG | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.04.2023
    OIM 01
    OIM 01
    Screw pump
    M
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OIM 01 | Screw pump | M | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OIM 05
    OIM 05
    Screw pump
    M
    Magnetic coupling
    14.02.2022

    OIM 05 | Screw pump | M | Magnetic coupling

    Version
    DE
    EN
    14.02.2022
    OIN 04
    OIN 04
    Screw pump
    NS
    Radial shaft seal
    20.04.2020

    OIN 04 | Screw pump | NS | Radial shaft seal

    Version
    DE
    EN
    20.04.2020
    OIW 01
    OIW 01
    Screw pump
    W
    Mechanical seal / Radial Shaft Seal
    02.06.2022

    OIW 01 | Screw pump | W | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    02.06.2022
    OID 02
    OID 02
    Pump station
    DKC/DLC
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OID 02 | Pump station | DKC/DLC | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OID 03
    OID 03
    Pump station
    DKC/DLC
    Magnetic coupling
    28.02.2022

    OID 03 | Pump station | DKC/DLC | Magnetic coupling

    Version
    DE
    EN
    28.02.2022
    OID 05
    OID 05
    Pump station
    DL2
    Mechanical seal / Radial Shaft Seal
    30.11.2022

    OID 05 | Pump station | DL2 | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.11.2022
    OID 06
    OID 06
    Pump station
    DL3/DL4/DS1/DS3/DS4
    Mechanical seal / Radial Shaft Seal
    30.04.2023

    OID 06 | Pump station | DL3/DL4/DS1/DS3/DS4 | Mechanical seal / Radial Shaft Seal

    Version
    DE
    EN
    30.04.2023
    OID 07
    OID 07
    Pump station
    DL3/DL4/DS1/DS3/DS4
    Magnetic coupling
    30.04.2023

    OID 07 | Pump station | DL3/DL4/DS1/DS3/DS4 | Magnetic coupling

    Version
    DE
    EN
    30.04.2023
    OIO 08
    OIO 08
    Flowmeter
    OMH
    04.01.2020

    OIO 08 | Flowmeter | OMH | –

    Version
    DE
    EN
    04.01.2020
    OIO 14
    OIO 14
    Flowmeter
    OMG
    30.04.2022

    OIO 14 | Flowmeter | OMG | –

    Version
    DE
    EN
    30.04.2022
    OIO 15
    OIO 15
    Flowmeter
    OME
    06.11.2023

    OIO 15 | Flowmeter | OME | –

    Version
    DE
    EN
    06.11.2023
    OIO 20
    OIO 20
    Flowmeter
    OME compact
    04.01.2022

    OIO 20 | Flowmeter | OME compact | –

    Version
    DE
    EN
    04.01.2022
    OIO 23
    OIO 23
    Flowmeter
    OMP
    31.05.2023

    OIO 23 | Flowmeter | OMP | –

    Version
    DE
    EN
    31.05.2023
    OIO 28
    OIO 28
    Flowmeter
    OMX
    30.04.2022

    OIO 28 | Flowmeter | OMX | –

    Version
    DE
    EN
    30.04.2022
    OIO 30
    OIO 30
    Flowmeter
    OMS
    Low-viscosity liquids
    01.04.2019

    OIO 30 | Flowmeter | OMS | Low-viscosity liquids

    Version
    DE
    EN
    01.04.2019
    OIO 31
    OIO 31
    Flowmeter
    OMS
    High-viscosity liquids
    30.08.2018

    OIO 31 | Flowmeter | OMS | High-viscosity liquids

    Version
    DE
    EN
    30.08.2018
    OIO 03
    OIO 03
    Flowmeter
    OMK
    28.04.2019

    OIO 03 | Flowmeter | OMK | –

    Version
    DE
    EN
    28.04.2019
    OIE 26
    OIE 26
    Elektronics
    BEM 100
    22.06.2020

    OIE 26 | Elektronics | BEM 100 | –

    Version
    DE
    EN
    22.06.2020
    OIE 29
    OIE 29
    Elektronics
    BEM 100
    Support-Software Smart Support
    22.04.2020

    OIE 29 | Elektronics | BEM 100 | Support-Software Smart Support

    Version
    DE
    EN
    22.04.2020
    OIE 29
    OIE 29
    Elektronics
    BEM 150
    Support-Software Smart Support
    21.04.2020

    OIE 29 | Elektronics | BEM 150 | Support-Software Smart Support

    Version
    DE
    EN
    21.04.2020
    OIE 27
    OIE 27
    Elektronics
    BEM 150
    30.06.2022

    OIE 27 | Elektronics | BEM 150 | –

    Version
    DE
    EN
    30.06.2022
    OIE 24
    OIE 24
    Elektronics
    BEM 200
    17.03.2023

    OIE 24 | Elektronics | BEM 200 | –

    Version
    DE
    EN
    17.03.2023
    OIE 15
    OIE 15
    Elektronics
    BEM 300
    07.10.2021

    OIE 15 | Elektronics | BEM 300 | –

    Version
    DE
    EN
    07.10.2021
    OIE 23
    OIE 23
    Elektronics
    BEM 300
    Modbus communication
    30.05.2012

    OIE 23 | Elektronics | BEM 300 | Modbus communication

    Version
    DE
    EN
    30.05.2012
    OIE 22
    OIE 22
    Elektronics
    BEM 500
    Modbus communication
    30.07.2019

    OIE 22 | Elektronics | BEM 500 | Modbus communication

    Version
    DE
    EN
    30.07.2019
    OIV 01
    OIV 01
    Elektronics
    BEM 500
    Differential measurement
    10.12.2019

    OIV 01 | Elektronics | BEM 500 | Differential measurement

    Version
    DE
    EN
    10.12.2019
    OIE 12
    OIE 12
    Elektronics
    BEM 500
    05.10.2021

    OIE 12 | Elektronics | BEM 500 | –

    Version
    DE
    EN
    05.10.2021
    OIE 30
    OIE 30
    Elektronics
    Smart Solution Display
    28.02.2023

    OIE 30 | Elektronics | Smart Solution Display | –

    Version
    DE
    EN
    28.02.2023
    OII 08
    OII 08
    Sensors
    EET
    Temperatur sensors
    30.07.2021

    OII 08 | Sensors | EET | Temperatur sensors

    Version
    DE
    EN
    30.07.2021
    OII 02
    OII 02
    Sensors
    BEG
    Pick up
    02.04.2022

    OII 02 | Sensors | BEG | Pick up

    Version
    DE
    EN
    02.04.2022
    OIG 01
    OIG 01
    Screw pump
    G
    Mechanical Seal
    01.10.2023

    OIG 01 | Screw pump | G | Mechanical Seal

    Version
    DE
    EN
    01.10.2023
    OPR 01
    OPR 01
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 01 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 02
    OPR 02
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 02 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 03
    OPR 03
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 03 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 04
    OPR 04
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 04 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 07
    OPR 07
    Screw pump
    L
    Product information sheet
    31.03.2017

    OPR 07 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    31.03.2017
    OPR 05
    OPR 05
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 05 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 06
    OPR 06
    Screw pump
    K
    Product information sheet
    30.09.2021

    OPR 06 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    30.09.2021
    OPR 08
    OPR 08
    Screw pump
    L
    Product information sheet
    01.08.2014

    OPR 08 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.08.2014
    OPR 09
    OPR 09
    Screw pump
    CK
    Product information sheet
    28.03.2022

    OPR 09 | Screw pump | CK | Product information sheet

    Version
    DE
    EN
    28.03.2022
    OPR 10
    OPR 10
    Screw pump
    L
    Product information sheet
    30.09.2014

    OPR 10 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    30.09.2014
    OPR 11
    OPR 11
    Pump station
    DKC/DLC
    Product information sheet
    01.04.2016

    OPR 11 | Pump station | DKC/DLC | Product information sheet

    Version
    DE
    EN
    01.04.2016
    OPW 01
    OPW 01
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 01 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 02
    OPW 02
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 02 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 03
    OPW 03
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 03 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 04
    OPW 04
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 04 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 09
    OPW 09
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 09 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 10
    OPW 10
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 10 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 11
    OPW 11
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 11 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 12
    OPW 12
    Screw pump
    K
    Product information sheet
    01.09.2013

    OPW 12 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2013
    OPW 13
    OPW 13
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 13 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 15
    OPW 15
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 15 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 16
    OPW 16
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 16 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 17
    OPW 17
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 17 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 18
    OPW 18
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 18 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 19
    OPW 19
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 19 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 20
    OPW 20
    Screw pump
    K
    Product information sheet
    01.09.2021

    OPW 20 | Screw pump | K | Product information sheet

    Version
    DE
    EN
    01.09.2021
    OPW 21
    OPW 21
    Screw pump
    L
    Product information sheet
    01.04.2020

    OPW 21 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.04.2020
    OPW 22
    OPW 22
    Screw pump
    L
    Product information sheet
    01.08.2019

    OPW 22 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.08.2019
    OPW 25
    OPW 25
    Pump station
    DKC/DLC
    Product information sheet
    01.09.2013

    OPW 25 | Pump station | DKC/DLC | Product information sheet

    Version
    DE
    EN
    01.09.2013
    OPW 27
    OPW 27
    Screw pump
    M
    Product information sheet
    01.03.2014

    OPW 27 | Screw pump | M | Product information sheet

    Version
    DE
    EN
    01.03.2014
    OPW 28
    OPW 28
    Screw pump
    M
    Product information sheet
    01.03.2014

    OPW 28 | Screw pump | M | Product information sheet

    Version
    DE
    EN
    01.03.2014
    OPW 29
    OPW 29
    Screw pump
    M
    Product information sheet
    01.03.2013

    OPW 29 | Screw pump | M | Product information sheet

    Version
    DE
    EN
    01.03.2013
    OPW 30
    OPW 30
    Screw pump
    M
    Product information sheet
    01.03.2014

    OPW 30 | Screw pump | M | Product information sheet

    Version
    DE
    EN
    01.03.2014
    OPW 31
    OPW 31
    Screw pump
    M
    Product information sheet
    01.03.2014

    OPW 31 | Screw pump | M | Product information sheet

    Version
    DE
    EN
    01.03.2014
    OPW 32
    OPW 32
    Pump station
    DML/DMS
    M
    Product information sheet
    01.10.2014

    OPW 32 | Pump station | DML/DMS | Product information sheet

    Version
    DE
    EN
    01.10.2014
    OPW 34
    OPW 34
    Screw pump
    L
    Product information sheet
    01.08.2019

    OPW 34 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.08.2019
    OPW 35
    OPW 35
    Screw pump
    L
    Product information sheet
    01.08.2014

    OPW 35 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.08.2014
    OPW 36
    OPW 36
    Screw pump
    CK
    Product information sheet
    01.06.2022

    OPW 36 | Screw pump | CK | Product information sheet

    Version
    DE
    EN
    01.06.2022
    OPW 39
    OPW 39
    Screw pump
    L
    Product information sheet
    01.08.2017

    OPW 39 | Screw pump | L | Product information sheet

    Version
    DE
    EN
    01.08.2017
    OPW 40
    OPW 40
    Pump station
    DKC/DLC
    Product information sheet
    01.10.2014

    OPW 40 | Pump station | DKC/DLC | Product information sheet

    Version
    DE
    EN
    01.10.2014
    OPW 41
    OPW 41
    Pump station
    DKC/DLC
    Product information sheet
    01.11.2014

    OPW 41 | Pump station | DKC/DLC | Product information sheet

    Version
    DE
    EN
    01.11.2014
    OPW 48_RR
    OPW 48_RR
    Screw pump
    CL
    Product information sheet
    01.09.2017

    OPW 48_RR | Screw pump | CL | Product information sheet

    Version
    DE
    EN
    01.09.2017
    OPW 49_RR
    OPW 49_RR
    Screw pump
    CL
    Product information sheet
    01.04.2018

    OPW 49_RR | Screw pump | CL | Product information sheet

    Version
    DE
    EN
    01.04.2018
    OPW 51
    OPW 51
    Screw pump
    W
    Product information sheet
    01.10.2017

    OPW 51 | Screw pump | W | Product information sheet

    Version
    DE
    EN
    01.10.2017
    OIR 01
    OIR 01
    Screw pump
    R
    Mechanical Seal
    01.09.2022

    OIR 01 | Screw pump | R | Mechanical Seal

    Version
    DE
    EN
    01.09.2022
    OIR 02
    OIR 02
    Screw pump
    R
    Magnetic coupling
    30.09.2022

    OIR 02 | Screw pump | R | Magnetic coupling

    Version
    DE
    EN
    30.09.2022
    OPW 33
    OPW 33
    Screw pump
    R
    Product information sheet
    22.01.2020

    OPW 33 | Screw pump | R | Product information sheet

    Version
    DE
    EN
    22.01.2020
    OPW 42
    OPW 42
    Screw pump
    R
    Product information sheet
    13.09.2022

    OPW 42 | Screw pump | R | Product information sheet

    Version
    DE
    EN
    13.09.2022
    OPR 12
    OPR 12
    Screw pump
    R
    Product information sheet
    13.09.2022

    OPR 12 | Screw pump | R | Product information sheet

    Version
    DE
    EN
    13.09.2022
    OIX 01
    OIX 01-01
    Pump station
    DKC/DLC
    ATEX supplementary instructions manuel zones 1/2 and 21/22
    01.12.2022

    OIX 01-01

    Version
    DE
    EN
    OIX 01
    OIX 02
    OIX 02
    Flowmeter
    OMH
    OMG
    OME
    OMP
    OMX
    ATEX supplementary instructions manual
    30.01.2018

    OIX 02

    Version
    DE
    EN
    OIX 02
    OIX 01
    OIX 01-02
    Screw pump
    CG
    CK
    CL
    K
    L
    M
    W
    ATEX supplementary instructions manuel zones 1/2 and 21/22
    01.12.2022

    OIX 01-02

    Version
    DE
    EN
    OIX 01
    OIX 05
    OIX 05-01
    Pump station
    DKC/DLC
    DL3/DL4/DS1/DS3/DS4
    ATEX supplementary instructions manuel zones 2 and 22
    18.07.2023

    OIX 05-01

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    ATEX supplementary instructions manuel zones 2 and 22
    18.07.2023

    OIX 05-02

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