KEM spiral flowmeters in the process of joining the rotor blades

Wind energy is used all over the world as a clean source of energy. Fiberglass and carbon fiber composites have established themselves as materials for wind turbine rotor blades.

Technical specifications :

  • Medium: Adhesive
  • Temperature : +20 °C to +40 °C [+68 °F to +104 °F]
  • Pressure: 120 to 200 bar [1,740 to 2,900 psi]
  • Measuring range: 8 to 12 l/min
  • Viscosity: 50,000 to 300,000 cSt
  • Density at 20 °C: 1,150 kg/m3


Wind energy is used all over the world as a clean source of energy. Fiberglass and carbon fiber composites have established themselves as materials for wind turbine rotor blades. These combine essential properties such as high strength, low weight and long service life.
The rotor blades are not molded in one piece. The top and bottom are cast separately and then joined to form a unit by a bonding process. Adhesives made of glass fibers, carbon fibers, silicon and other composite materials are used. They are highly viscous and abrasive. The goal is to achieve a fast and sustainable bond - a challenge for measuring technology. Even the smallest mistakes can lead to serious additional costs.


KEM spiral flowmeters (SRZ series) withstand extensive abrasive forces and provide accurate readings even at high viscosities. The special concept of metrological bearings guarantees accurate measurement results, high reproducibility and a long service life.

KEM ECO Ex Pulse amplifier

ECO Ex has IECEx, ATEX and UKEX certificates, which confirm its safety and usability in potentially explosive environments. CSA approval coming soon.
Our full line of ECO pulse amplifiers is now compatible with all KEM flowmeters. This allows you maximum flexibility in choosing your flowmeter while ensuring optimal performance with state-of-the-art electronics.
The ECO Ex amplifier system includes single or dual sensing with increased resolution for bidirectional flow measurement. The temperature of the medium can vary from -40 °C to +150 °C. This opens up new possibilities for using ECO Ex even in extreme temperature conditions without having to compromise on measurement accuracy. All ECO pulse amplifiers have a wide range of analog and frequency outputs that can be freely configured.
We cordially invite you to see for yourself the benefits of ECO Ex and our entire range of ECO products. Visit our website or contact our sales team for more information.

Measuring the flow of adhesive coating from KEM using a TCM Coriolis mass flowmeter.

Application :

To measure the flow of the adhesive coating, the best commercially available quality flow meters for mixing the filler with the powder component were previously used. The expected accuracy was no longer achieved and the final product did not meet the standard required by the car manufacturer. Due to the high rejection that was detected during the incoming inspection of the goods at the customer's place, high damage was caused both to the manufacturer and to the end customer. The consequence was heavy fines for the manufacturer, as the lack of quality caused delays in delivery to end customers. A solution was sought to solve this costly problem quickly and efficiently. The installed monitoring system was tested in combination with a Coriolis mass flowmeter and met the quality requirements. At the same time, there is no need for costly maintenance as there are no moving parts to wear, ensuring long-term accuracy
Solution :
TCM Coriolis mass flowmeter with frequency output and Modbus communication.


  • No wear and tear
  • High measurement accuracy
  • Direct weight measurement independent of density and temperature
  • Integrated density measurement to monitor the mixing ratio to ensure production quality
  • Space-saving electronics without display
  • Output signals and communication via Modbus for online monitoring


Our Industrial Flow Meters and Sensors Know How to Use the Summer Heat 

As the scorching summer months approach, TASI Industrial Flow understands the challenges that arise in various industrial applications, particularly those requiring precise flow measurement and sensor technology. That's why we are excited to showcase our exceptional range of flow meters and sensors, designed to tackle the unique demands of hot weather environments. Watch the video here to learn more.


Powersports Engine Testing

See how AW-Lake's Turbine Flow Meter and EDGE Sensor are being used by a leading powersports manufacturer to test engine cooling systems to prevent overheating.

Read more


Solar Panel Manufactoring

See how KEM is making the manufacturing of solar panels quicker and more efficient through the use of their Helical Flow Meters in the photovoltaic panel bonding process. 

Read more


Asphalt Paving Machinery

See how TRICOR's Coriolis Flow Meters are being installed on asphalt paving machinery, saving the client money through efficient dispensing of liquid asphalt. 

Read more

When the Weather Outside is Frightful Our Flow Meters Prove Why They're So Delightful 

No matter the weather, our flow meters and instrumentation can stand up to the coldest and harshest of conditions. Whether up in the stratosphere or underneath automobiles, watch the video to learn more about how our flow meters are being used to keep industries from being stuck out in the cold. Watch the video here to learn more.

Anti-Icing & De-Icing Sprays

See how AW-Lake's FlowStat ES Paddle Wheel flow meters are being equipped on municipal and industrial vehicles to spray chemical solutions that prevent and break-up ice on roads and runways. 


Refueling Hybrid Rockets

See how KEM's engineers worked with students at the University of Stuttgart to develop a rocket refueling system using Coriolis mass meters to refuel rockets high up in the atmosphere. 


Auto Under Body Coating

See how TRICOR's Coriolis flow meters are being used by car manufacturers to spray weather protective coatings to the under body of automobiles.


Our Flow Meters and Monitors are Helping Reduce Carbon Footprints

From recycled plastic to wind turbines, our meters and monitors are being used in applications all over the world in helping keep our planet green. Watch the video here to learn more.

Plastics to Fuels & Chemicals

See how AW-Lake's TRICOR Coriolis meter is helping one company recycle plastic waste into fuels and other industrial chemicals.

Read more

Creating Wind Turbine Blades

See how KEM's Helical Flow Meters (SRZ Series) help in the creation of wind turbine blades.

Read more

Measuring Corrosion Inhibitor

See why Litre Meter puts such high importance on measuring corrosion inhibitor, especially in the oil an gas extraction industry. 

Read more

Application spotlight from KEM

Chemical coating

Technical specifications :

Medium: VAM, Veova, Styrene
Temperature: + 20 ° C to + 40 ° C [+ 68 ° F to + 104 ° F]
Pressure: 0.5 bar (g) [7.25 psi]
Measuring range: 7,000 - 10,000 kg / h
Viscosity: varying
Density at 20 ° C: 0.9 kg / l

Application :

Veova vinyl acetate polymers are widely used in coating applications as a binder in paints. These polymers are recommended for alkali-resistant dispersion paints with excellent scratch resistance. Emulsions have good weather resistance. Recommended for low gloss paint, exterior matt and textured paint.
Typical applications: exterior paint, interior paint, primer, texture paint, interior paint with a high PVC content, acrylic emulsion paint, acrylic sealant

The solution

TCM Coriolis mass flow meter from the TRICOR CLASSIC series
monitors the actual flow. It ensures the best product quality by precisely controlling the actual flow compared to the target flow. Highly accurate density measurement provides additional information for reliable process control. These characteristics are used in
combined with a cost-effective all-in-one solution.


  • Weight-based measurement result, independent of density and viscosity
  • Measurement accuracy up to 0.1% of measurement. M. (depending on the dynamic range of the measuring range)
  • Density accuracy 0.1% of measured value
  • reproducibility better than 0.05%
  • No moving parts: easy to maintain
  • No input / output parts are required
  • Mechanical construction resistant to external interference (eg vibrations)
  • Balanced price-performance ratio
  • This measuring device also has a special version of ESTA (electrostatic application) for paints with low VOC content

The TCMH 0450 is the world's first MI-002 / OIML137 certified Coriolis flowmeter for hydrogen dosing applications.

Measurement technology is required to account for the hydrogen delivered. This is a challenge for the whole measurement chain that is regulated by SAE J2601. For fuel cell vehicles (only for vehicles other than HDV (heavy duty vehicles)), all vehicle manufacturers now prefer to supply 700 bar and pre-cool to -40 ° C [-40 ° F]. Under these conditions refueling at a pressure of 700 bar takes less than 3 minutes when filling the tank 3-4 kg. At the same time, accurate refueling invoicing is expected. The requirement for the accuracy of the flow measurement technology used is regulated in EU legislation Directive 2014/32 / EU, Annex IV (MI 002) "Gas meters and volume correctors". Applicable harmonized standards or normative documents: OIML R 137.

With this challenge, we began the development of our Coriolis mass flowmeter together with well-known gas producers. 

  • This dates back to 2014. The scope of the challenge was clear until extensive testing in the real world
  • The hydrogen is then compressed to 900 bar using a defined pressure ramp as defined in the SAE

J2601, is ready to be delivered to the vehicle for refueling after a specified pressure ramp. At this point, it must be said that in the beginning, flow measurement technology was used in front of the heat exchanger. Thus, the flowmeter was under pressure, but did not have to handle the challenge of cooling to -33 ° C [-27 ° F] in less than 30 seconds. At higher temperatures, the refueling process would take correspondingly longer.  Avoiding overheating is a top priority.
In the first phase, a mass flow meter was installed between the container (i.e. after compressor) and in front of the heat exchanger. Different scenarios have clearly shown the challenges when refueling. The difference between the pressure P1 at the beginning and the pressure P2 after the end of refueling affected the measurement result: 

  • P1 ~ P2: The invoiced amount of hydrogen corresponds to the amount actually refueled.
    Reason: Amount of hydrogen present in the pressure line before the fuel change by the same amount after refueling.
  • P1> P2: More hydrogen has been emitted than is actually charged.
    Reason: At the end of refueling, a smaller amount of hydrogen is replaced in the pressure line.
  • P1 <P2: Less hydrogen is emitted than is actually charged.
    Reason: More hydrogen is replaced in the pressure line at the end of refueling

In the second phase, we focused on the use of a flow meter after the heat exchanger and on the solution the problems described above. Measured distance between flow meter and the dispenser is shorter, the pressure is constant and therefore the accuracy of refueling is better. However, this has greatly increased the challenge for the flowmeter. Now both high pressure and temperature gradient had to be processed, which was a particular challenge for flowmeter zero point stability. The results were good, but still not entirely satisfactory due to the requirement of the application.

In the third phase, the flowmeter is now installed directly in the upstream stand heat exchanger and at constant pressure. Therefore, there is no longer an undefined volume of gas in the piping system, the flowmeter is not exposed to a temperature drop. By this the best accuracy is achieved during refueling, Our Coriolis mass flowmeter has its 6th birthday and has successfully experienced it in all three phases and evolved with them.

HP Series | TCMH 0450 Coriolis Mass Flow Meter for liquids.

Nom. Flow Rates:  
850 kg/m³, Pressure Drop max. 2 bar:180 kg/h @ 1 cSt6.6 lb/min @ 1 cSt
 150 kg/h @ 10 cSt 5.5 lb/min @ 10 cSt
 65 kg/h @ 30 cSt2.4 lb/min @ 30 cSt
Pressure Rating:  
TCMH 0450-HC-SPOS:1050 bar15,200 psi
TCMH 0450-HC-SROS:690 bar10,000 psi
TCMH 0450-HC-SSOS:414 bar6000 psi
Connection:3/8” Autoclave (MP) 

HP Series | TCMH 0450 Coriolis Mass Flow Meter for gases

Nom. Flow Rates:  
@ 20°C air, pressure drop 10 bar:394 kg/h @ 1050 bar14.5 lb/min @ 15,200 psi
 362 kg/h @ 690 bar13.3 lb/min @ 10,000 psi
 316 kg/h @ 414 bar11.6 lb/min @ 6000 psi
@ 20°C H2, pressure drop 50 bar:254 kg/h @ 1050 bar9.30 lb/min @ 15,200 psi
 240 kg/h @ 875 bar8.80 lb/min @ 12,690 psi
 222 kg/h @ 690 bar8.15 lb/min @ 10,000 psi
 184 kg/h @ 414 bar6.75 lb/min @ 6000 psi
Pressure Rating:  
TCMH 0450-HC-SPPS (or -SPMS):1050 bar15,200 psi
TCMH 0450-HC-SRPS (or -SRMS)690 bar10,000 psi
TCMH 0450-HC-SSPS (or -SSMS):414 bar6000 psi
 P (1.4404/AISI 316L) = NACE compliant,
M (HP160) = not NACE compliant.
Connection:3/8” Autoclave (MP)other connections available

KEM introduces a new product group: ECO pulse amplifier

Pulse Amplifiers - ECO

With one sensor, for screwing in for all KEM flow meters.
Our ECO pulse amplifiers can be equipped with all KEM flow meters. The amplifier contains one connection with a temperature range up to + 150 ° C and a double connection for higher resolution or bidirectional flow measurement with a standardized push-pull output stage.


  • Compact design for volume meters
  • Media temperatures up to +150 ° C [+302 ° F]
  • Frequency doubling
  • Flow direction detection
  • Compliance with EMC Directive 2014/30 / EU


  • Wide range of applications with several sensors
  • Suitable for all mechanical measuring instruments
  • user friendly (plug and play)
  • Short delivery times
  • Optimized for storage

Technical data :

  • Supply voltage: +12 to 27 V DC, regulated
  • Room current: <20 mA
  • Frequency range: 1 to 5,000 Hz
  • Ambient temperature: -40 ° C to +60 ° C [-40 ° F to +140 ° F]
  • Media Temperature: -40 ° C to + 150 ° C [-40 ° F to + 302 ° F], depending on version
  • Output signal: 1: 1-frequency or directional signal and dual frequency
  • Protection: IP 65

Calibration of flow meters at the highest level

Since 1994, KEM has been performing its own calibration at the highest technical level on its flow meters. The Calibration Laboratory works with a highly accurate weighing system. With an accuracy of 0.05 percent for the weight and 0.1 percent for the volume of liquid fluids, KEM occupies a leading position throughout the world. The German Accreditation Body (DAkkS) has accredited a laboratory with engineers, processes and measuring equipment according to the international standard according to DIN EN ISO / IEC 17025: 2005. Calibration is a professional method for obtaining accurate and usable precision measurement information. Calibration is performed with different hydrocarbons - a unique feature of the KEM calibration stand. This ensures optimal simulation of changing operating conditions in density, direction of flow and viscosity even in temperature changes. Therefore, if viscosity variations occur within a customer-specific application, the predominant viscosity for the use of the flowmeter may be deliberately taken into account.

Even national testing laboratories use calibrated KEM flow meters to make a world-wide comparison of the accuracy of their equipment abroad

In addition to the calibration of its own products, KEM also offers calibration services for various flow meters in Bad Kötzting. Most flowmeters from customers of this service are intended for use in the automotive, pharmaceutical, food, aerospace, biotechnology or general measurement industries. The individual detailed calibration record not only documents the accuracy of the flow meter, but also guarantees traceability to the customer according to national standards.

The advantage for the customer is that all the requirements of the relevant international quality standards are met.


  • Viscosities up to 100 mm² / s
  • Mass and volume flow rates from 0.016 to 2.000 l / min
  • Density from 650 to 1,000 kg / m3
  • Messgenauigkeit 0,05 bis 0,1% vom Messwert

KEM Calibration Service

  • DAkkS-Zertifikat für Kalibrierung
  • Zertifizierung nach verschiedenen Standards
  • Calibration for different grades of viscosity up to 3,000 mm² / s
  • Volume flow rates from 0.002 to 20.000 l / min
  • Special Calibration on Demand


  • Highest accuracy of calibration
  • Traceability according to national standards
  • Internationally Recognized Results and Documentation (Calibration Certificate)
  • Practical calibration (dynamic weighing method)
  • Fast delivery times for calibration

Mass flow meters (KCM/TCM)

Mass flow meters for all types of liquids.
Measuring ranges from 4.5 kg/h to 60,000 kg/h and pressures up to 350 bar.

  • Coriolis mass flowmeter electronics KCE 5000
  • Coriolis mass flowmeter electronics KCE 8000
  • TRICOR mass flowmeter

Gear flow meters (ZHM)

Volumetric flow eg for PU components, paints flow measurement, metering equipment, measuring fuel consumption, suitable for hydraulic oil.
Measuring range from 0.005 to 1.000 l/min.
Typical viscosity range 5 - 25,000 mm²/s

  • Gear Flow Meters standard (ZHM-ST)
  • Gear Flow Cartridge (ZHM-CT)
  • Ball bearings Gear Flowmeters (ZHM-KL)
  • Gear flow meters aluminum version (Zha)
  • Dosing device (DCD)
  • Gear flowmeters for high pressure applications (ZHM-HP)
  • Gear flow meters for testing equipment, oil, chemical injection (ZHM 01/3)

Turbine flowmeters (HM)

Measurement of flow of water, oils, fuels, chemicals, and cryogenic liquids or liquefied gases.
Measuring range from 0.03 to 48,000 l/min.
Typical viscosity range 0.5 - 100 mm²/s

  • Turbine flowmeters (HM) - General overview / measuring principle
  • Turbine flowmeters flange connection (HM-F)
  • Turbine Flowmeters with thread (HM-R)
  • Turbine flowmeters Ermeto connection (HM-E)
  • Turbine Flow Meters for Pharmaceutical Applications (HM-FT)
  • Turbine flowmeters for solvents (HM-TCR)
  • Turbine flowmeters for high pressure applications (HM-HP)
  • Turbine flow meters for temperature control circuits (HM-P)
  • Turbine flow meters in aluminum (HM-U)

Screw flowmeters (SRZ)

Flow measurement PU components, adhesives and sealants, grease, oil, petrochemical products, etc.
Measuring range from 0.01 to 400 l / min.
Typical viscosity range 1 - 1,000,000 mm²/s

  • Spindle flow standard (SRZ)
  • Spindle with double-flow sensor (SRZ-Compact)
  • Screw flowmeters with ball bearing (SRZ-KL)

Micro-Flow (LFM)

Flowmeter for Additives, pharmaceutical liquids, aromatic liquids, liquefied gases, demineralized water, liquid food, two and three-component applications ...

Measuring range: 0.005 to 0.25 l/min.
A typical viscosity range of 0.5 - 2 mm²/s

  • Mikroflowmeter (LFM)

Measurement of turbidity (KPS)

Sensors for measuring turbidity are used for optimization of industrial processes in the food industry, chemistry, pharmacy.

  • Measurement of turbidity (KPS)

Plunger operated switches

  • switching voltage 48 V
  • switching current max. 0.5 A
  • switching power 10 W/VA
  • protection class IP 67
  • temperature range -30…+120°C
  • KCM 0300
  • mereni zakalu
  • Mikroprutokomer
  • turbinove prutokomery
  • turbinove prutokomery02
  • turbinove prutokomery03
  • vretenove prutokomery
  • vretenove prutokomery02
  • ZHM
  • Kalibrierung – DAkkS
  • TRICOR Coriolis Massendurchflussmesser – CLASSIC Serie

Kristián Gyenes

Tel.: +421 37 7777 920
Mobile: +421 903 717 015
Fax: +421 37 7777 929