42 Flow Level Pressure
Improve Gas Compressor Efficiency and Reduce Cost with Air/Gas Mass Flow Meter Point Measurement
Engineers and technicians in search of a cost-effective air/gas mass flow monitoring solution for gas compressor point-of-use measurement will find that the rugged ST75 Flow Meter from USA’s Fluid Components International (FCI) delivers precision flow measurement while reducing the consumption of energy fuel gases, specialty gases and pneumatic air. Installing ST75 Flow Meters in large process industry facilities and assembly plants with multiple gas compressors allows the operators to compare compressor usage and adjust them for optimum efficiency. In addition, the use of mass flow meters at the point of compressed gas output helps to ensure peak performance at a given flow rate. Comparing the performance of multiple gas compressors is also useful in predictive maintenance applications where higher flow rates may indicate leaking valves or seals in one unit versus other units operating under similar conditions.
The rugged and highly reliable ST75 Flow Meter is designed for demanding process industry and manufacturing assembly plant environments. Offering an extensive set of standard features, the ST75 Flow Meter is designed for line sizes from 0.25 to 2.0 inches (6 to 51mm), which is ideal for compressor gas line measurement, and provides three unique outputs: the mass flow rate, totalized flow and media temperature. The ST75 Flow Meter’s design includes media temperature compensation to ensure performance under variable process and plant temperature conditions. It offers
accuracy to ±1% of reading and ±0.5% repeatability. Its precision flow element has a no-moving parts design that employs platinum RTD sensors embedded in equal mass thermowells with microprocessor electronics that can be calibrated to laboratory standards for CO2
as well as many other gases.
Operating over a wide flow range, from 0.01 to 559 SCFM (0.01 to 950 NCMH) depending on line size, the ST75 Flow Meter is equally well suited for low flow and high flow applications. For variable process conditions, the ST75 is factory preset to a wide turndown range at 10:1 to 100:1.
The ST75 was developed with FCI’s proven thermal dispersion technology, providing direct-flow measurement for more accurate performance at a lower cost by eliminating the need for temperature sensors, flow computers, or other devices that are required with orifice plates, Venturis, Vortex shedding, and other meters. Its no-moving parts design ensures superior service life. There are no orifices or inlets to clog or foul, which significantly reduces scheduled maintenance and unplanned shut-downs.
The ST75 Flow Meter offers fully scaleable 4-20mA and 0-10V outputs. They are user assignable to flow rate and/or temperature and a 0-1kHz pulse output of total flow. The instrument can be ordered for input power with either 18 to 36 Vdc or 85 to 265 Vac, with or without a built-in LCD digital display. The ST75 is enclosed in a rugged, all-metal, dust and water resistant NEMA Type 4X (IP66) rated package designed for hazardous area installations and manufactured with a rugged sensing element utilizing all welded 316 stainless steel construction and Hastelloy-C tips. Approvals include: Class 1, Div. I Groups B, C, D. Div. II Groups A-D; ATEX/IECEx Zone I, II 2 G Ex d IIC T6....T3; II 2 D Ex td A21, IP67 T90°...T300° (pending); FM/CSA/CRN and CE Marked.
Reader Reply Card No 124
Run Your Business Smarter with a Flow Measurement Solution
The oil and gas industry faces unique challenges in accounting for what and how much is flowing through a pipeline at any given moment – challenges that can impact a company’s reputation and profit margin. Siemens (USA) can help. The Siemens SITRANS F US line of clamp-on ultrasonic flowmeters produces accurate and reliable flow measurement for a wide range of oil and gas applications.
The versatile SITRANS FUT1010 has been developed specifically to meet the needs of the oil and gas industry industry. The meter’s maintenance-free TransLoc mounting system means that the sensors are mounted permanently on the outside of the pipe, preventing contact with the medium. This allows for flow calibration and subsequent use in applications requiring custody transfer accuracy, and avoids fouling of sensors by high-paraffin product. The liquid version of SITRANS FUT1010 meets OIML R117 and API recommendations, making it ideal for custody transfer pipeline, terminal, refinery and transportation applications. The gas version is compliant with AGA-9 and features an internal fixed AGA-8 table that allows the meter to report standard volume flow without a separate volume- compensating flow computer. Application examples include production wells, underground storage, gas processing and power plants. For both the liquid and gas versions of the SITRANS FUH1010, final preparations are currently underway to allow the ordering of PED-approved meters acceptable for use within the European Union.
The oil industry can also benefit from SITRANS FUH1010, which is capable of measuring flow in even the most demanding conditions where traditional flowmeters might falter or fail. The meter is available in three different versions. SITRANS FUH1010 Standard Volume performs accurate standard volume and mass flow measurement and is suitable for high-end applications carrying multiple liquids and liquids with varying viscosities. SITRANS FUH1010 Precision Volume dynamically compensates for viscosity changes as liquid properties change for continuous correction of Reynolds number. It can be used for leak detection, scraper and pig detection, and in chemical processing applications. SITRANS FUH1010 Interface Detector offers extremely precise interface, crude oil and multi-product identification. It is appropriate for oil applications that require differentiation between various liquids in a pipeline and determination of liquid quality. SITRANS FUG1010 brings unmatched durability to the gas industry, with the ability to tolerate the harshest wet gas environments in which most competing meters cannot perform. SITRANS FUG1010 features an internal AGA-8 table for standard volume computation, gas interface software that facilitates data extraction and enables identification of gas type, and immunity to most pressure-reducing valve noises. It is in compliance with the American Gas Association’s AGA-10 speed of sound measurement practice. Also available as a pre-configured portable check metering kit, SITRANS FUG1010 is ideal for lost and unaccounted for (LAUF) analysis, allocation measurement, flow survey verification, product well testing, underground storage applications and gas-fired power stations.
Reader Reply Card No 125 New Technology for Level Metering
Time Domain Refflectometry or as commonly called, TDR is one of the newest technologies in Level Metering. The main advantage of this technology is its immunity from medium density and extreme pressure and temperature.
Nivelco’s (Hungary) MicroTREK range of TDR level transmitters based on this technology offer excellent price to performance ratios for applications up to 40 bar pressures and 200°C temperatures. The compact transmitter featuring a plastic or aluminium enclosure is programmable and readable through its digital HART protocol or, locally by means of a plug-in display unit.
The transmitter may come with 1 or 1 1/2 inch process connections or with flanges. A wide selection of probes, rigid or flexible cover ensure a remarkable range of applications for monitoring liquids and free flowing solids. Single, dual or coaxial probes, which are bare or plastic coated, facilitate the use of the MicroTREK range in various mediums.
Explosion proof approvals by ATEX make the MicroTREK an attractive choice for users in the Petrochemical Industries. Regarded to be notoriously difficult; level metering of hot and sticky bitumen is easily achievable by using the MicroTREK range.
Reader Reply Card No 126 August / September 2011 •
www.petro-online.com
New Partnership to Develop and Manufacture Coriolis Mass Flow Meters
Dave Perkins, CEO of Racine Federated Inc. (RFI), Racine, WI and Wayne L. Pratt, President and CEO of Applied Flow Solutions (AFS), Scottsdale, AZ announce a partnership to develop and manufacture coriolis mass flow meters for the global process and automation markets.
Desired for their extremely high accuracy, durability and low-maintenance design, coriolis meters have long been the preferred choice of demanding customers in many process industries.
Coriolis meters excel in a wide range of applications with changing fluid densities, including oil & gas, pharmaceutical and food & beverage.
The addition of a coriolis mass flow option provides customers of Racine Federated’s Flow Meter Group a complete line-up for all major flow measurement technologies. “Applied Flow Solutions’ deep technical knowledge and demonstrated experience in delivering best-in-class coriolis technology to market made AFS an attractive partner,” said Perkins. “An advanced coriolis meter, when combined with Racine Federated’s customer service and worldwide network of distribution partners, will give the market an outstanding new option for mass flow metering applications.”
With more than 25 years of experience in flow measurement, Pratt is excited to bring this new family of products to market in concert with Racine Federated (USA). “Coriolis mass flow measurement is a passion at AFS,” said Pratt, “we’re truly excited to find a partner in Racine Federated whose passion for flow measurement technology and customer service rivals our own.”
The new line of coriolis meters will feature several advanced features, including extensive on-board process and batch control capability, PC software for commissioning and diagnostics, and a self-filling/self-draining tube design. Meters will be available in 2012 in a variety of sizes and option configurations.
These options will include size ranges from 1/16” to 3” diameter, construction in either stainless steel or Hastelloy. The sophisticated, next-generation electronics will be available in both sensor and remote mounting configurations with a wide range of popular communication protocols. And, standard units will be rated up to 150°C (302°F), with high-temp models rated to 230°C (446°F).
Reader Reply Card No 127
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