KRAL Flowmeters OMH Series.
For high pressures with highest accuracy.
With high pressure to an accurate measuring result.
The KRAL flow meters OMH series were especially designed to handle high pressures of up to 420 bar that can occur in the field of mechanical engineering, at test benches and in hydraulic applications.
Large flow ranges usually require large pipe cross sections and are therefore bulky flow metering devices. Due to the compact measuring element, the OMH series fits into a small housing and offers the significant advantage of being compact and lightweight in this pressure class, even for high flow rates.
The pressure resistance is provided by a very rigid housing, maintaining the compact dimensions, and at the same time the proven precision of the KRAL flow meters, even at extreme pressure levels.
- Technical data.
Technical data OMH-013 OMH-020 OMH-032 OMH-052 OMH-068 OMH-0100 Nominal diameter DN [inch] 1/2 3/4 1 1 1/2 2 4 Total length with threaded flange G [mm] 150 185 255 320 385 500 Weight with threaded flange G [Kg] 7 12 29 55 81 150 Flow rate I/h Qmax 900 2,700 9,000 31,500 63,000 180,000 Qnom 600 1,800 6,000 21,000 42,000 120,000 Qmin 6 18 60 210 420 1,200 Flow rate I/min Qmax 15 45 150 525 1,050 3,000 Qnom 10 30 100 350 700 2,000 Qmin 0.1 0.3 1.0 3.5 7.0 20 Max. pressure [bar] 420 420 420 420 420 250 Temperature [°C] -20 to +200 -20 to +200 -20 to +200 -20 to +200 -20 to +200 -20 to +200 Viscosity [mm²/s] 1 to 1x106 1 to 1x106 1 to 1x106 1 to 1x106 1 to 1x106 1 to 1x106 Precision of measurement value ±0.1 % ±0.1 % ±0.1 % ±0.1 % ±0.1 % ±0.1 % Repeatability ±0.01 % ±0.01 % ±0.01 % ±0.01 % ±0.01 % ±0.01 % K-factor K2 [P/I] 2,432 1,280 468 142 79.6 33.6 K3 [P/I] 7,296 2,560 1,014 302 167 57.6 K4 [P/I] 7,296 2,560 1,014 302 167 87.6 Frequency f2 at Qnom [Hz] 405 640 780 828 929 1,120 f3 at Qnom [Hz] 1,216 1,280 1,690 1,760 1,949 1,920 f4 at Qnom [Hz] 1,216 1,280 1,690 1,762 1,948 2,920 - Sensor.
Sensor BEG 06 / BEG 06A* BEG 44A BEG 45 with BEV 13 BEG 53A / BEG 54A* Application Ex-range High pressures, broad temperature range High pressures, broad temperature range Flow direction detection K-factor K1 K2 K3 K4 Signal Namur Push-Pull PNP Push-Pull Temperature [°C] -40 to +150 -40 to +150 -40 to +250 -40 to +125 Max. pressure [bar] 350 420 420 650 *dependent on nominal value - Operating instructions.
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No. DocumentProductSeriesSeal/DesignVersionOIK 14OIK 14Screw pumpKMechanical Seal18.04.2024OIK 14 | Screw pump | K | Mechanical Seal
VersionDEENOIK 07OIK 07Screw pumpKRadial shaft seal18.04.2024OIK 07 | Screw pump | K | Radial shaft seal
VersionDEENOIK 09OIK 09Screw pumpKMagnetic coupling18.04.2024OIK 09 | Screw pump | K | Magnetic coupling
VersionDEENOIK 10OIK 10Pump stationEKL/EKS–14.08.2024OIK 10 | Pump station | EKL/EKS | –
VersionDEENOIL 01OIL 01Screw pumpLMechanical seal / Radial Shaft Seal01.06.2024OIL 01 | Screw pump | L | Mechanical seal / Radial Shaft Seal
VersionDEENOIL 02OIL 02Screw pumpLMagnetic coupling01.06.2024OIL 02 | Screw pump | L | Magnetic coupling
VersionDEENOIL 03OIL 03Pump stationELL/ELSMechanical seal / Radial Shaft Seal15.11.2024OIL 03 | Pump station | ELL/ELS | Mechanical seal / Radial Shaft Seal
VersionDEENOIC 01OIC 01Screw pumpCKMechanical seal / Radial Shaft Seal01.06.2024OIC 01 | Screw pump | CK | Mechanical seal / Radial Shaft Seal
VersionDEENOIC 02OIC 02Screw pumpCLMechanical seal / Radial Shaft Seal04.06.2024OIC 02 | Screw pump | CL | Mechanical seal / Radial Shaft Seal
VersionDEENOIC 10OIC 10Screw pumpCGMagnetic coupling28.11.2024OIC 10 | Screw pump | CG | Magnetic coupling
VersionDEENOIC 13OIC 13Screw pumpCLMagnetic coupling04.06.2024OIC 13 | Screw pump | CL | Magnetic coupling
VersionDEENOIC 18OIC 18Screw pumpCGMechanical seal / Radial Shaft Seal29.11.2024OIC 18 | Screw pump | CG | Mechanical seal / Radial Shaft Seal
VersionDEENOIM 01OIM 01Screw pumpMMechanical seal / Radial Shaft Seal01.06.2024OIM 01 | Screw pump | M | Mechanical seal / Radial Shaft Seal
VersionDEENOIM 05OIM 05Screw pumpMMagnetic coupling01.06.2024OIM 05 | Screw pump | M | Magnetic coupling
VersionDEENOIN 04OIN 04Screw pumpNSRadial shaft seal20.04.2020OIN 04 | Screw pump | NS | Radial shaft seal
VersionDEENOIW 01OIW 01Screw pumpWMechanical seal / Radial Shaft Seal21.10.2024OIW 01 | Screw pump | W | Mechanical seal / Radial Shaft Seal
VersionDEENOID 02OID 02Pump stationDKC/DLCMechanical seal / Radial Shaft Seal01.11.2024OID 02 | Pump station | DKC/DLC | Mechanical seal / Radial Shaft Seal
VersionDEENOID 03OID 03Pump stationDKC/DLCMagnetic coupling02.10.2024OID 03 | Pump station | DKC/DLC | Magnetic coupling
VersionDEENOID 05OID 05Pump stationDL2Mechanical seal / Radial Shaft Seal15.07.2024OID 05 | Pump station | DL2 | Mechanical seal / Radial Shaft Seal
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VersionDEENOID 07OID 07Pump stationDL3/DL4/DS1/DS3/DS4Magnetic coupling15.07.2024OID 07 | Pump station | DL3/DL4/DS1/DS3/DS4 | Magnetic coupling
VersionDEENOIO 08OIO 08FlowmeterOMH–10.04.2024OIO 08 | Flowmeter | OMH | –
VersionDEENOIO 14OIO 14FlowmeterOMG–10.04.2024OIO 14 | Flowmeter | OMG | –
VersionDEENOIO 15OIO 15FlowmeterOME–10.04.2024OIO 15 | Flowmeter | OME | –
VersionDEENOIO 20OIO 20FlowmeterOME compact–10.04.2024OIO 20 | Flowmeter | OME compact | –
VersionDEENOIO 23OIO 23FlowmeterOMP–31.05.2023OIO 23 | Flowmeter | OMP | –
VersionDEENOIO 28OIO 28FlowmeterOMX–30.04.2022OIO 28 | Flowmeter | OMX | –
VersionDEENOIO 30OIO 30FlowmeterOMSLow-viscosity liquids10.04.2024OIO 30 | Flowmeter | OMS | Low-viscosity liquids
VersionDEENOIO 31OIO 31FlowmeterOMSHigh-viscosity liquids29.03.2024OIO 31 | Flowmeter | OMS | High-viscosity liquids
VersionDEENOIO 03OIO 03FlowmeterOMK–10.04.2024OIO 03 | Flowmeter | OMK | –
VersionDEENOIE 26OIE 26ElektronicsBEM 100–07.11.2024OIE 26 | Elektronics | BEM 100 | –
VersionDEENOIE 29OIE 29ElektronicsBEM 100Support-Software Smart Support22.04.2020OIE 29 | Elektronics | BEM 100 | Support-Software Smart Support
VersionDEENOIE 29OIE 29ElektronicsBEM 150Support-Software Smart Support21.04.2020OIE 29 | Elektronics | BEM 150 | Support-Software Smart Support
VersionDEENOIE 27OIE 27ElektronicsBEM 150–07.11.2024OIE 27 | Elektronics | BEM 150 | –
VersionDEENOIE 24OIE 24ElektronicsBEM 200–21.02.2024OIE 24 | Elektronics | BEM 200 | –
VersionDEENOIE 15OIE 15ElektronicsBEM 300–07.10.2021OIE 15 | Elektronics | BEM 300 | –
VersionDEENOIE 23OIE 23ElektronicsBEM 300Modbus communication30.05.2012OIE 23 | Elektronics | BEM 300 | Modbus communication
VersionDEENOIE 22OIE 22ElektronicsBEM 500Modbus communication30.07.2019OIE 22 | Elektronics | BEM 500 | Modbus communication
VersionDEENOIV 01OIV 01ElektronicsBEM 500Differential measurement10.12.2019OIV 01 | Elektronics | BEM 500 | Differential measurement
VersionDEENOIE 12OIE 12ElektronicsBEM 500–05.10.2021OIE 12 | Elektronics | BEM 500 | –
VersionDEENOIE 30OIE 30ElektronicsSmart Solution Display–21.05.2024OIE 30 | Elektronics | Smart Solution Display | –
VersionDEENOII 08OII 08SensorsEETTemperatur sensors04.10.2024OII 08 | Sensors | EET | Temperatur sensors
VersionDEENOII 02OII 02SensorsBEGPick up09.01.2024OII 02 | Sensors | BEG | Pick up
VersionDEENOIG 01OIG 01Screw pumpGMechanical Seal01.04.2024OIG 01 | Screw pump | G | Mechanical Seal
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VersionDEENOPR 07OPR 07Screw pumpLProduct information sheet21.12.2023OPR 07 | Screw pump | L | Product information sheet
VersionDEENOPR 05OPR 05Screw pumpKProduct information sheet21.12.2023OPR 05 | Screw pump | K | Product information sheet
VersionDEENOPR 06OPR 06Screw pumpKProduct information sheet21.12.2023OPR 06 | Screw pump | K | Product information sheet
VersionDEENOPR 08OPR 08Screw pumpLProduct information sheet21.12.2023OPR 08 | Screw pump | L | Product information sheet
VersionDEENOPR 09OPR 09Screw pumpCKProduct information sheet21.12.2023OPR 09 | Screw pump | CK | Product information sheet
VersionDEENOPR 10OPR 10Screw pumpLProduct information sheet21.12.2023OPR 10 | Screw pump | L | Product information sheet
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VersionDEENOPW 02OPW 02Screw pumpKProduct information sheet01.09.2021OPW 02 | Screw pump | K | Product information sheet
VersionDEENOPW 03OPW 03Screw pumpKProduct information sheet01.09.2021OPW 03 | Screw pump | K | Product information sheet
VersionDEENOPW 04OPW 04Screw pumpKProduct information sheet01.09.2021OPW 04 | Screw pump | K | Product information sheet
VersionDEENOPW 09OPW 09Screw pumpKProduct information sheet01.09.2021OPW 09 | Screw pump | K | Product information sheet
VersionDEENOPW 10OPW 10Screw pumpKProduct information sheet01.09.2021OPW 10 | Screw pump | K | Product information sheet
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VersionDEENOPW 13OPW 13Screw pumpKProduct information sheet01.09.2021OPW 13 | Screw pump | K | Product information sheet
VersionDEENOPW 15OPW 15Screw pumpKProduct information sheet01.09.2021OPW 15 | Screw pump | K | Product information sheet
VersionDEENOPW 16OPW 16Screw pumpKProduct information sheet21.12.2023OPW 16 | Screw pump | K | Product information sheet
VersionDEENOPW 17OPW 17Screw pumpKProduct information sheet01.09.2021OPW 17 | Screw pump | K | Product information sheet
VersionDEENOPW 18OPW 18Screw pumpKProduct information sheet01.09.2021OPW 18 | Screw pump | K | Product information sheet
VersionDEENOPW 19OPW 19Screw pumpKProduct information sheet01.09.2021OPW 19 | Screw pump | K | Product information sheet
VersionDEENOPW 20OPW 20Screw pumpKProduct information sheet21.12.2023OPW 20 | Screw pump | K | Product information sheet
VersionDEENOPW 21OPW 21Screw pumpLProduct information sheet21.12.2023OPW 21 | Screw pump | L | Product information sheet
VersionDEENOPW 22OPW 22Screw pumpLProduct information sheet21.12.2023OPW 22 | Screw pump | L | Product information sheet
VersionDEENOPW 25OPW 25Pump stationDKC/DLCProduct information sheet01.09.2013OPW 25 | Pump station | DKC/DLC | Product information sheet
VersionDEENOPW 27OPW 27Screw pumpMProduct information sheet01.03.2014OPW 27 | Screw pump | M | Product information sheet
VersionDEENOPW 28OPW 28Screw pumpMProduct information sheet01.03.2014OPW 28 | Screw pump | M | Product information sheet
VersionDEENOPW 29OPW 29Screw pumpMProduct information sheet01.03.2013OPW 29 | Screw pump | M | Product information sheet
VersionDEENOPW 30OPW 30Screw pumpMProduct information sheet01.03.2014OPW 30 | Screw pump | M | Product information sheet
VersionDEENOPW 31OPW 31Screw pumpMProduct information sheet01.03.2014OPW 31 | Screw pump | M | Product information sheet
VersionDEENOPW 32OPW 32Pump stationDML/DMS
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VersionDEENOPW 34OPW 34Screw pumpLProduct information sheet21.12.2023OPW 34 | Screw pump | L | Product information sheet
VersionDEENOPW 35OPW 35Screw pumpLProduct information sheet21.12.2023OPW 35 | Screw pump | L | Product information sheet
VersionDEENOPW 36OPW 36Screw pumpCKProduct information sheet21.12.2023OPW 36 | Screw pump | CK | Product information sheet
VersionDEENOPW 39OPW 39Screw pumpLProduct information sheet21.12.2023OPW 39 | Screw pump | L | Product information sheet
VersionDEENOPW 40OPW 40Pump stationDKC/DLCProduct information sheet01.10.2014OPW 40 | Pump station | DKC/DLC | Product information sheet
VersionDEENOPW 41OPW 41Pump stationDKC/DLCProduct information sheet21.12.2023OPW 41 | Pump station | DKC/DLC | Product information sheet
VersionDEENOPW 48_RROPW 48_RRScrew pumpCLProduct information sheet01.09.2017OPW 48_RR | Screw pump | CL | Product information sheet
VersionDEENOPW 49_RROPW 49_RRScrew pumpCLProduct information sheet01.04.2018OPW 49_RR | Screw pump | CL | Product information sheet
VersionDEENOPW 51OPW 51Screw pumpWProduct information sheet21.12.2023OPW 51 | Screw pump | W | Product information sheet
VersionDEENOIR 01OIR 01Screw pumpRMechanical Seal01.09.2022OIR 01 | Screw pump | R | Mechanical Seal
VersionDEENOIR 02OIR 02Screw pumpRMagnetic coupling30.09.2022OIR 02 | Screw pump | R | Magnetic coupling
VersionDEENOPW 33OPW 33Screw pumpRProduct information sheet21.12.2023OPW 33 | Screw pump | R | Product information sheet
VersionDEENOPW 42OPW 42Screw pumpRProduct information sheet21.12.2023OPW 42 | Screw pump | R | Product information sheet
VersionDEENOPR 12OPR 12Screw pumpRProduct information sheet21.12.2023OPR 12 | Screw pump | R | Product information sheet
VersionDEENOPW 56OPW 56Screw pumpGProduct information sheet22.04.2024OPW 56 | Screw pump | G | Product information sheet
VersionDEENOPW 37OPW 37Pump stationDKC/DLCProduct information sheet21.12.2023OPW 37 | Pump station | DKC/DLC | Product information sheet
VersionDEENOPW 38OPW 38Pump stationDKC/DLCProduct information sheet21.12.2023OPW 38 | Pump station | DKC/DLC | Product information sheet
VersionDEENOIW 02OIW 02Screw pumpWMagnetic coupling21.10.2024OIW 02 | Screw pump | W | Magnetic coupling
VersionDEENOIL 04OIL 04Pump stationELL/ELSMagnetic coupling15.11.2024OIL 04 | Pump station | ELL/ELS | Magnetic coupling
VersionDEENOIX 01OIX 01-01Pump stationDKC/DLCATEX supplementary instructions manuel zones 1/2 and 21/2213.12.2024OIX 01-01
VersionDEENOIX 02OIX 02FlowmeterOMH
OMG
OME
OMP
OMXATEX supplementary instructions manual30.01.2018OIX 02
VersionDEENOIX 01OIX 01-02Screw pumpCG
CK
CL
K
L
M
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VersionDEENOIX 05OIX 05-01Pump stationDKC/DLC
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VersionDEENOIX 05OIX 05-02Screw pumpCG
CK
CL
G
K
L
M
WATEX supplementary instructions manuel zones 2 and 2213.12.2024OIX 05-02
VersionDEEN