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Flow Level Pressure Deltatop Flowmeter Fits Lines from 1/2 to 24 Inches Endress+Hauser (Germany) announces the Deltatop differential pressure (DP) flowmeter for measuring gas, liquid and steam in 1/2 to 24-inch pipes.
Deltatop is a complete flow monitoring solution including an averaging pitot tube, and it offers customers the most accurate and reliable DP flow technology in the industry. Deltatop features precision-machined orifice plate primary devices complete with flanged unions, manifold and transmitter—designed specifically for applications in accordance with ASME B16.36. These primary elements are designed to safely and accurately measure flow on liquid, gas or steam. These flow solutions are available in class 300# to 2400# flanges.
Proven accuracy of volumetric flow in the Deltatop is achieved through the development of a theoretical model of flow coefficients that have been proven through empirical test data and verified by independent laboratories. The averaging pitot tube provides unsurpassed accuracy and reliability. The bullet-shaped solid piece construction and the location of low-pressure ports makes this flow solution clog-free and precise with extremely impressive signal-to-noise ratio. This provides extremely stable flow readings across the entire measurement range.
Deltatop flow solutions are an excellent value for reliable flow measurement because Endress+Hauser brings together technology in primary devices along with experience in pressure measurement. The result is a best-in-class solution to accurately measure flow using the differential pressure method.
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Space/Weight Saving V-Cone Flow Meter Is Ideal for Mounted Module Systems
Designers of mounted module systems for a wide variety of oil/gas applications will find that the rugged McCrometer (USA) V-Cone Flow Meter from McCrometer fits into tight places, saving space and reducing weight while providing the highest levels of performance and accuracy. Designed for portability, mounted module equipment requires a small footprint for easy shipment, quick installation in tight spaces and minimal environmental impact. The V-Cone Flow Meter is ideal for mounted module systems in the oil/gas industry, meeting the technical and space requirements for multiple applications in offshore and land-based production and refining operations.
The V-Cone provides the ideal solution for flow measurement in tight spaces such as mounted modules because it dramatically reduces the need for required flow meter straight pipe runs while meeting or exceeding necessary technical specifications. Mounted module systems require compact minimal pipe runs, and the V-Cone reduces installation real estate, allows for flexible layouts and cuts overall pipe weight. The precision V-Cone’s unique no- moving parts design provides built-in flow conditioning, which nearly eliminates the upstream/downstream straight pipe runs required by nearly all other flow meter technologies. Other Typical flow meter installations may require 10 to 40 straight pipe diameters upstream from the meter and 5 or more straight pipe diameters downstream to eliminate the effects of swirl and other pipeline disturbances caused by valves or elbows that negatively affect measurement accuracy.
The space-saving V-Cone reduces typical flow meter straight pipe run requirements by up to 70 percent or more and needs only 0-3 straight pipe diameters upstream and 0-1 downstream to operate effectively. It easily fits into mounted module systems in crowded deep water subsea production units, FPSO vessels and refineries, while also reducing pipe material costs and installation labor costs. The versatile V-Cone operates over a wide flow range of 10:1 and supports line sizes from 0.5 to greater than 120 inches. Engineers in the oil/gas industry can rely on the V-Cone Flow Meter for low cost of ownership because it requires virtually no recalibration or maintenance over an exceptionally long life. Unlike traditional DP instruments such as orifice plates and Venturi tubes, the
V-Cone Flow Meter’s design is inherently more accurate because the flow conditioning function is built-into the basic flow sensor design. The V-Cone conditions fluid flow to provide a stable flow profile, resulting in a stable signal that increases accuracy. The flow sensor‘s design features a centrally-located cone inside a tube. The cone interacts with the fluid flow and reshapes the velocity profile to create a lower pressure region immediately downstream. The pressure difference, which is exhibited between the static line pressure and the low pressure created downstream of the cone, can be measured via two pressure sensing taps. One tap is placed slightly upstream of the cone and the other is located in the downstream face of the cone itself. The pressure difference can then be incorporated into a derivation of the Bernoulli equation to determine the fluid flow rate. McCrometer’s versatile V-Cone Flow Meter is compatible with the demanding standards set by the oil/gas production and refining industry.
The testing of the V-
Cone Flow Meter conforms to the American Petroleum Institute’s API 22.2 Testing Protocol for Differential Pressure Flow Measurement Devices for standard measurement requirements, and other international certifications such as Measurement Canada and Brazilian INMETRO when allocation and even custody transfer measurements are required.
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Differential Pressure Measurement with Even Better Zero-Point Accuracy
Sensirion’s (Switzerland) digital differential pressure sensors in the SDP600 series have been used successfully in medical equipment and HVAC applications since 2009. The results from practical experience and tests exceed even the ambitious expectations. In particular, the zero-point accuracy specification has been improved significantly and is now stated as a maximum deviation of 0.2 Pa.
The first dynamic digital differential pressure sensor from Sensirion, the SDP600 series, was awaited with great anticipation. This was hardly surprising, since the advance specifications of the small, fully calibrated sensor included outstanding long-term stability and a short response time along with high accuracy and sensitivity, even with very small differential pressures (less than 10 Pa).
Accumulated practical experience with the sensor and test results now show that the
performance exceeds the high standard of the advance specifications. In particular, the range of zero-point variation is three times less than expected. The maximum deviation from the zero point was originally specified as 0.5 Pa, but now it has been restated as 0.2 Pa. The SPD600 series also solidly fulfils its expectations with regard to reliability and other specifications. With this, the new sensor achieves the level of more expensive reference products.
Reader Reply Card No 54 53
Differential Pressure Transmitter for Static Pressure up to 1035 Bar
Oil and gas producers are drilling to new depths to keep up with demand. Traditional differential pressure transmitters that are not designed to operate above 6000PSI (414 bar) are challenged by the need to operate at high pressure. This challenging application needs a solution that is specifically designed to cope with higher static pressures, aggressive process and environmental conditions.
Based on extensive experience of supplying transmitters for this demanding application, Fuji Electric (France) is proud to announce the release of its latest, ATEX approved, Differential Pressure Transmitter as a direct response to their customers’ requirement in high pressure applications that are traditionally found in oil and gas flow measurement. The experience and technical capability that Fuji built into the new transmitter enables it to measure differential pressures of 130mbar at static pressures of up to 1035 bar (15 000 Psi), typically found in top side and subsea applications.
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Sensors with Super Shield Housing
MTS Sensor Technologie GmbH’s (Germany) new Temposonics®
RS and GS sensors with super shield housing
ensure long-term linear position and liquid level measurement in harsh environments, making them ideal for outdoor use, as well as applications requiring high- pressure wash-down cleaning. Hermetically sealed with a housing completely made of stainless steel, they meet the requirements of protection modes IP68 and IP69K and are reliably shielded against corrosion and penetration of dirt and water.
The robust, rod-shaped Temposonics® sensors have
been developed for measuring lengths of 50-7600 mm. Due to non-contact measuring technology, sensor integration into a hermetically sealed housing is possible. A position magnet moves along the outside of the pressure-resistant sensor pipe and marks the position without mechanical contact. For liquid level measurement, the magnet can be embedded into a float. The modular sensor cartridge design enables the customer to choose the specific sensor output configurations to be installed within the super shield housing to best fit their application requirements. The measuring accuracy and all technical data correspond to the features of the sensor selected inside the housing. A wide choice of interfaces (Analogue, Profibus, SSI, CANbus, DeviceNet, EtherCAT, POWERLINK) is available. Moreover, integration of ATEX-certified and intrinsically safe sensors is possible with the protective housing.
By combining Temposonics® R- and G-Series sensors
with this unique housing, MTS has developed a cost- effective solution to utilize their proven non-wearing, trouble-free technology in the harshest environments.
Reader Reply Card No 56 55 52
June/July 2010
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