About Non-Intrusive Flow Meters
Setting the standard for non-intrusive flow measurement
Setting the standard for non-intrusive flow measurement
Emerson’s Flexim Non-Intrusive Ultrasonic flow measurement technologies measure virtually anything that flows, liquids as well as gases. Our proprietary clamp-on ultrasonic flow meters enable operators to simply attach the transducer to the outside of the pipe – without any interruption to operations or any risk of leakage. As our products meet the highest requirements of industrial production, safety and the highest level of plant availability on the other operators can easily measure flow anywhere.
FLUXUS® clamp-on ultrasonic systems determine the volume flow according to the transit-time difference method. Since the ultrasonic signal that is irradiated into the pipe is carried by the medium flowing inside, a time delay occurs between the acoustic transit time both with and against the flow of direction. This time delay can be measured very accurately. The measuring transmitter calculates the volume flowrate based on the parameters input for the pipe geometry and the physical properties of the medium stored in the internal database.
The reliability and accuracy of measuring systems depend on the quality of their manufacturing and calibration. Consistent quality management according to DIN ISO 9001 is essential for Flexim, which has a calibration laboratory certified to ISO/IEC 17025:2018. Calibration is carried out on individual calibration equipment according to national standards. Flexim calibrates pairs of transducers and measuring transmitters independently of one another so that the narrowly defined measurement uncertainties are always observed, regardless of which transducers are used.
The Flexim FLUXUS® Non-Intrusive Ultrasonic Flow Meters are used wherever something flows. Clamp-on technology opens up an unrivaled wide range of applications as the FLUXUS device reliably measures the flow of virtually any medium, be it liquid or gas, regardless of the flow direction (bidirectional) and over an extremely wide measuring range. Due to its practical advantages, external flow measurement with clamp-on ultrasonic transducers has become a standard measuring technique in a broad range of industries and applications.
Advanced Meter Verification (AMV) allows you to check the health of your Flexim flow measurement device directly onsite without the need of process interruption. This flow meter verification solution saves cost while ensuring the performance of your non-invasive flow measurement. The continuous acquisition and permanent storage of diagnostic values by the transmitter enables regular verification. Based on this data, maintenance can be planned, and unexpected failures can be avoided. Operators can automatically generate a flow meter verification report provides the documentation required for your quality management system.
Letting our experienced service technicians carry out flow measuring tasks at your site can save you considerable resources that can be used on more efficiently on other duties.
Our flow meter services are arranged according to your individual needs:
These services include on-site measurements, laboratory analysis, project handling, training, commissioning, instrument rentals and consulting services.
Flexim FLUXUS® G gas flowmeter series is the measurement system of choice wherever gas poses a hazard, be it is explosive, toxic, or chemically aggressive. Wetted flowmeters would wear out quickly. Therefore, FLUXUS G is used to measure the flow of natural gas, from the production well to the consumer.
Emerson Flexim has opened up the world of non-intrusive ultrasonic flow measurement by providing solutions for particularly challenging measurement tasks. Ultrasonic transducers mounted on the outside of the pipe do not suffer wear and tear by any media and cannot become clogged by any particles.
Emerson Flexim has paved the way for the non-intrusive flow measurement of steam with clamp-on ultrasonic technology. High-temperature steam measurement at temperatures over 356 °F is based on a different measurement principle: cross-correlation measurement. Two ultrasonic transducer pairs are mounted onto the pipe at a specific distance to each other forming two gates. They send ultrasonic signals through the pipe. The modulation of the signals tracks turbulence characteristics of the steam flow. This powerful device is portable and can also measure liquids, gases, compressed air and heat, delivering a veritable multi-tool for maintenance and energy managers.
Measuring compressed air flows precisely in all conditions with a high-pressure air flow meter is the key to improving the energy efficiency of compressed air systems while reducing costs.
Using state-of-the-art technology, the non-invasive FLUXUS CA ultrasonic air flowmeter series offer a permanent or portable solution that is ideally suited for carrying out energy audits, metering the consumption of compressed air, checking existing meters, detecting potential leaks, balancing plant networks as well as monitoring compressor efficiency.
Based on Flexim's clamp-on flow measurement technology, FLUXUS TE combines the volumetric meter and energy calculator in just one transmitter. Equipped with up to 2 flow measuring channels and up to 4 temperature inputs, it delivers measured values such as current flow or mass flow, thermal energy rate, temperatures and also corresponding counter functions.
Applications such as heating, and cooling can be easily implemented.
The Flexim WaveInjector® technology is used in extreme temperatures. The patented device separates the ultrasonic transducers thermally from the pipe thereby extending the application range of non-intrusive clamp-on ultrasonic technology to temperatures of -328 °F to 1166 °F. The WaveInjector® is a transducer mounting device. So much heat is radiated or absorbed via its metallic coupling plates that the temperature of the transducer clamping fixture lies within the working range of the ultrasonic transducers. The WaveInjector® is also simply mounted on the outside of the pipe without having to open the pipeline. Since it is a purely mechanical arrangement, the WaveInjector® can also be used in potentially explosive areas.
Refractometry – in other words, the measurement of light refraction – has proven itself as a method of analytics in the laboratory time and time again. The Flexim PIOX® R process refractometer transfers laboratory accuracy into the process. In contrast to laboratory refractometers, PIOX® R measures using the transmitted light method. With a reproducibility of the refractive index nD 0.00002, very precise concentration measurements can be achieved. Furthermore, the monochromatic measuring beam is refracted by a biprism in two different directions which means the refraction of two light beams can be measured. The difference between the two resulting peaks is measured. The patented measuring method ensures stable measuring results, even in case of temperature and pressure fluctuations in harsh process environments.
Oil & Gas production, transportation, and storage operations are subject to the highest and most complex process conditions and are subject to strict standards of performance, availability, and efficiency. Accurate, reliable, and cost-effective clamp-on oil and gas flow meters specifically designed to withstand the extreme processes and ever-changing conditions of the industry. Our non-intrusive, clamp-on ultrasonic fuel oil flow meters are the perfect solution for high pressures, high temperatures, abrasive media, and safety requirements across the industry.
The operational conditions within chemical sites are very demanding. A wide range of organic and inorganic media are handled, some of which are flammable, toxic, or highly corrosive. Furthermore, extreme temperature ranges can be encountered. It is under these challenging conditions that the outstanding advantages of clamp-on chemical flow meters and concentration measurement become most apparent. Non-intrusive and maintenance-free yet offer excellent accuracy and repeatability.
Outstanding performance and great accuracy have made the transit-time measuring principle the technology of choice for many applications in several industries. These industries’ strict requirements for hygienic design, measuring performance and accuracy are easily met by Flexim food and beverage flow meters. 100% hygienic and 100% contamination free.
Our range of digital water flow meters are useful in a wide range of applications across multiple industries, including potable water treatment, wastewater treatment and metering for water distribution. Our clamp-on ultrasonic water flow meters can be installed without any service interruption or pipework. Because they make no contact with the water itself, these ultrasonic water flow meters are a hygienic solution, and they cause no wear to pipes and other components.
Modernization is essential for driving efficient power generation. Non-intrusive instrumentation for steam flow measurement in power plants and other applications means no interruption in supply and no direct contact with the process media, which makes our energy consumption measurement solution also free of maintenance and helps power plant operators to monitor and control their processes with highest efficiency and outstanding flexibility.
The mining industry faces some of the harshest industrial environments. Accurate, reliable and durable flow monitoring is crucial to maintain well balanced and optimized minerals processing. The flowing media, most often abrasive mineral slurries, corrosive leach solutions, toxic chemicals and others, should better stay inside the pipe to ensure high plant availability.
Wood is the most important raw material in industrial paper production. The main processes involve the processing of wood chips and the subsequent pulp production. When it comes to guaranteeing consistent paper quality, it comes down to the right mixture. This is where Flexim’s flow and concentration measuring technologies come into play, especially in difficult applications when measuring the highly corrosive liquors or the flow of slightly adhesive substances like glue and paste or highly abrasive slurries and pulps.
Easy to retrofit and reliable thermal energy flow measurement devices, Flexim flow meters for chilled water and hot water are an ideal technology for today’s Energy Management, Sub Metering and Monitoring measuring tasks. Hot water and chilled water flow meters serve an important function in maintaining an efficient system.
Check and monitor the functionality and internal leak rate of the green, yellow and blue hydraulic systems for the complete, Left-Hand Wing, Right-Hand Wing and Tail sections of the aircraft without the need for any direct works on the hydraulic lines. These hydraulic oil flow meters are clamped directly to the hydraulics line. The use of ultrasonic enables these hydraulic flow meters to do their job without lengthy installation times or creating obstructions on the line. Their non-intrusive nature and accuracy make them some of the most important hydraulic measuring instruments available today.
