KRAL flowmeters stand for reliability and accuracy in every application. Our innovative technologies ensure precise detection and control of liquid flows in a wide range of industrial sectors. Whether in the oil and gas industry, power generation, the chemical industry or marine technology - our solutions are designed to deliver consistently accurate results even under the most demanding conditions.

With our flowmeters, you benefit from outstanding measurement accuracy and high repeatability of measurement results. Our products are characterized by a robust design that guarantees a long service life and minimal maintenance requirements. Simple integration into existing systems and user-friendly operation enable fast and efficient commissioning.

KRAL relies on state-of-the-art technologies and continuous development to always offer you the best solutions for your flow measurement requirements. Our comprehensive product range extends from compact, portable devices to complex systems for large-scale applications. Each of our flowmeters undergoes stringent quality controls to ensure maximum reliability and precision.

KRAL - Your expert for flowmeters.

"Quality, innovation and speed, at all times and worldwide."

Since the company was founded, KRAL has positioned itself as a manufacturer of quality products at a fair price/performance ratio, offering customized solutions for systems, from engineering to commissioning, both locally and worldwide. Our after-sales service is also there for you after your purchase.

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Advantages of our series for flow measurement.

High measuring accuracy.
Our flowmeters offer high measurement accuracy, delivering precise results even under the most demanding conditions. This accuracy ensures optimal performance and efficiency of your processes. Through continuous innovation and quality assurance, we ensure that our devices always meet the highest standards.

Simple, understandable measurement technology.
The measurement technology of our devices is designed to be easy to understand and simple to operate. This enables quick integration into your existing systems and reduces the amount of training required for your employees. Despite their ease of use, our devices offer first-class performance and reliability.

Robustness and durability.
Our flowmeters are known for their robustness and durability. They are made of high-quality materials that ensure a long service life and resistance to wear. This results in lower maintenance costs and greater operational reliability.

Versatile applications.
The series of our flowmeters are extremely versatile and suitable for a wide range of applications. Whether in the chemical industry, in mechanical engineering or in food production - our devices adapt flexibly to the requirements of a wide range of industries. This makes them the ideal solution for a wide range of measuring tasks.

Cost efficiency.
By combining high measurement accuracy and simple operation, our flowmeters contribute to the cost efficiency of your processes. They enable precise measurements and at the same time reduce the need for expensive, time-consuming calibrations. This allows you to sustainably reduce your operating costs.

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Signal acquisition via the spindle.

During signal detection via the spindle, the edge of the spindle is detected with a pulse generator. Two edges are detected per revolution of the spindle, resulting in two pulses per spindle revolution. As one spindle revolution transports exactly the volume of the measuring chamber, two pulses are generated per measuring chamber volume. This type of signal acquisition is a cost-effective solution for all common consumption and flow measurement applications.

Advantages of our flow measurement series at a glance.

Precise results even under demanding conditions.
Optimum performance and efficiency.
Highest standards through continuous innovation.
Easy to understand and simple to operate.
Quick integration into existing systems.
Long service life and wear resistance.
Suitable for a wide range of applications.
Sustainable reduction in operating costs.

Do you have any questions? - We will be happy to help you!

We and our independent sales and service partners are available to you worldwide at any time.
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Application areas for flow measurement.

Flow measurement in the chemical industry.

Our flowmeters ensure precise measurements in chemical processes. They offer high resistance to aggressive media and extreme temperatures. This ensures efficiency and safety in production. Optimum dosing and exact monitoring are guaranteed. This improves the quality of your end products.

Flow measurement for control and positioning in hydraulics.

In hydraulic systems, our flowmeters ensure reliable control of the oil flow. They support the optimum performance of machines and systems. Precise measurements minimize wear. This extends the service life of your hydraulic systems. This enables efficient maintenance planning and execution.

Flow measurement in plastics production.

Our flow meters play a key role in the production of plastics. They enable the precise monitoring and control of raw material flows. This leads to consistently high product quality. Energy consumption is optimized and production costs are reduced. The result is trouble-free workflows and efficient processes.

Flow measurement for test benches for motors, gearboxes, pumps, etc.

Our flow meters are ideal for use in test benches. They provide accurate measurement data for checking and calibrating systems. This ensures the quality and performance of your products. Flexibility and adaptability characterize our devices. They meet the highest standards and requirements in test environments.

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Flow measurement

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Technical data of our flowmeters.

OMP series.

Technical data		OMP-013	OMP-020	OMP-032	OMP-052
Nominal diameter	DN [mm]	15	20	25/32	40
	DN [inch]	1/2	3/4	1	1 1/2
Overall length with DIN flange	[mm]	115	125	180/190	240
Weight with DIN flange	[kg]	4	5	11/13	19
Flow rate I/min	Qmax	900	2.700	9.000	31.500
	Qnenn	600	1.800	6.000	21.000
	Qmin	6	18	60	210
Flow rate I/min	Qmax	15	45	150	525
	Qnenn	10	30	100	350
	Qmin	0,1	0,3	1,0	3,5
Pressure max.	[bar]	40	40	40	40
Temperature	[°C]	-20 - +200	-20 bis +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K [P/I]	1.214,0	321,0	78,0	17,73
Frequency	f at Qnenn [Hz]	202	161	130	104

OME series.

Technical data		OME-013	OME-020	OME-032	OME-052
Nominal diameter	DN [mm]	15	20	25/32	40
	DN [inch]	1/2	3/4	1	1 1/2
Overall length with DIN flange	[mm]	105	135	185	325
Weight with DIN flange	[kg]	2	2	4	12
Flow rate I/h	Qmax	900	2.700	9.000	31.500
	Qnenn	600	1.800	6.000	21.000
	Qmin	6	18	60	210
Flow rate I/min	Qmax	15	45	150	525
	Qnenn	10	30	100	350
	Qmin	0,1	0,3	1,0	3,5
Pressure max.	[bar]	40	40	40	40
Temperature	[°C]	-20 - +125	-20 - +125	-20 - +125	-20 - +125
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K [P/I]	1.214,0	321,0	78,0	17,73
Frequency	f at Qnenn [Hz]	202	161	130	104

OMG series.

Technical data		OMG-13	OMG-20	OMG-32	OMG-52	OMG-68	OMG-100	OMG-140
Nominal diameter	DN [mm]	15	20	25/32	40	50	100	150
	DN [inch]	1/2	3/4	1	1 1/2	2	4	6
Overall length with DIN flange	[mm]	145	185	255/265	285	340	460	610
Weight with DIN flange	[Kg]	6	6	13/15	21	31	77	190
Flow rate I/h	Qmax	900	2.700	9.000	31.500	63.000	180.000	450.000
	Qnenn	600	1.800	6.000	21.000	42.000	120.000	300.000
	Qmin	6	18	60	210	420	1.200	3.000
Flow rate I/min	Qmax	15	45	150	525	1.050	3.000	7.500
	Qnenn	10	30	100	350	700	2.000	5.000
	Qmin	0,1	0,3	1,0	3,5	7,0	20	50
Pressure max.	[bar]	250	250	250	160	100	40	40
Temperature	[°C]	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	K1 [P/I]	1.216	640	234	71,0	39,8	16,8	8,8
	K2 [P/I]	2.432	1.280	468	142	79,6	33,6	17,7
	K3 [P/I]	7.296	2.560	1.014	302	167	57,6	22,1
	K4 [P/I]	7.296	2.560	1.014	302	167	87,6	45,1
Frequency	f1 at Qnenn [Hz]	203	320	390	414	464	560	738
	f2 at Qnenn [Hz]	405	640	780	828	929	1.120	1.475
	f3 at Qnenn [Hz]	1.216	1.280	1.690	1.760	1.949	1.920	1.842
	f4 at Qnenn [Hz]	1.216	1.280	1.690	1.762	1.948	2.920	3.758

OMH series.

Technische Daten		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
Overall 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
	Qnenn	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
	Qnenn	10	30	100	350	700	2.000
	Qmin	0,1	0,3	1,0	3,5	7,0	20
Pressure max.	[bar]	420	420	420	420	420	250
Temperature	[°C]	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200	-20 - +200
Viscosity	[mm²/s]	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106	1 - 1x106
Accuracy	from measured value	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %	±0,1 %
Reproducibility		±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 Qnenn [Hz]	405	640	780	828	929	1.120
	f3 at Qnenn [Hz]	1.216	1.280	1.690	1.760	1.949	1.920
	f4 at Qnenn [Hz]	1.216	1.280	1.690	1.762	1.948	2.920

OMS series.

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 I/min	Qmax	45	150	525	-**
	Qnenn	30	100	350	10
	Qmin	0,6*	2,0*	7,0*	0,04*
Pressure max.	bar	185	185	120	400
Temperature	°C	-20 - +150	-20 - +150	-20 - +150	-20 - +80
Viscosity	mm²/s	1 - 10²	1 - 10²	1 - 10²	10² - 10⁶
Accuracy	from measured value	±0,1 %*	±0,1 %*	±0,1 %*	±0,5 %
Reproducibility		±0,01 %	±0,01 %	±0,01 %	±0,01 %
K-factor	P/I	1.280	468	142	66.000
Frequency	at Qnenn Hz	640	780	828	11.000

The series for flow measurement.

Flow measurement
OMP series

Flow measurement
OME series

Flow measurement
OMG series

Flow measurement
OMH series

Flow measurement
OMS series

Flow measurement
OMX series

Do you have any questions?
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+43 / 55 77 / 8 66 44 - 0

kral@kral.at

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Flow measurement.