Process Equipment Update


portable ultrasonic flowmeter. With true hybrid transit time and Doppler operation, this includes an expandable 1GB data logger that takes readings over 100 times a second, and the ability to store site-specific parameters using plain English site descriptions.


Multiple graphing options Other benefits include: built to handle rigorous environments with an outdoor-readable full colour WVGA display and protective cover; easy to read flow measurement screens; multiple graphing options and advanced diagnostics; and full touchscreen keyboard for more efficient data input. For its part, Badger Meter, a leading global innovator


and manufacturer of flow control solutions, says it has raised the bar with its E-Series ultrasonic flow meters. With state- of-the-art ultrasonic technology that provides exacting flow measurement, the company says its E-Series deliver long- term, accurate meter reading for utilities. Designed specifically for water metering applications, the


meters use ultrasonic transit time technology to accurately calculate flow rate and total consumption. The E-Series meter is constructed with no moving parts,


greatly improving accuracy and reliability by eliminating the mechanical wear that can reduce accuracy over the life of the meter.


Internal battery The internal battery that powers the meter will last up to 20 years, reinforcing dependable service and peace of mind. In addition to its long lifespan, the E-Series meter is very accurate - within ±1.5 per cent - regardless of water quality, sand particles and pressure fluctuations. Lead-free compliant with current and future NSF/ANSI


standards, the E-Series meter’s stainless steel housings are available in six sizes: 5


/8 inch, 5 /8 x 3 /4 inch, 3 /4 inch, 1 inch,


and now also including 11/2 inch and 2 inch. Its simplified one-piece electronic meter and register design are integral to the meter body for ease of installation. The meter electronics


are contained in a compact, encapsulated, weatherproof and UV-resistant housing. Badger Meter currently holds Underwriters Laboratories (UL) certification for its 3


/4 inch, 1 inch, 11/2 inch and 2 inch


stainless steel E-Series meters. Listed under UL Subject 327B, E-Series meters are the


first electronic meters to receive certification under this newly published standard. With the UL Subject 327B listing, E-Series meters are


available for different applications including potable water and reclaimed water.


Clamp-on solutions FLEXIM’s non-intrusive ultrasonic clamp-on flow meters are said by the company to set the standards in terms of reliability and user-friendliness - but especially in terms of accuracy. This precision is based on over 20 years of experience


and deep knowledge in the field of ultrasonic clamp-on flowmetering by the company’s engineers. Several technological breakthroughs, driven by the


company, as well as implementing standards are the responsible cornerstones. One of these is ‘plug and play’ wet-flow calibrated


transducers. Each matched pair of transducers undergo a rigorous wet-flow calibration at the factory and is shipped with traceable calibration documentation.


Non-volatile memory All calibration data - including the transducer identification and parameters - is stored in a transducer-resident non- volatile memory (EPROM). It is automatically transferred to the transmitter upon connection. Consequently, programming errors are eliminated and


there is never a need for a zero adjustment or calibration. In addition, FLEXIM’s FLUXUS instruments feature a


robust dual-μP technology core together with the latest digital signal processing (DSP). With a generation of 1000 signals per second, they allow for real time statistical analysis and produce


The case for steam flowmetering N


ot only is steam an excellent carrier of heat, it is also sterile, and thus popular for process use in the food, pharmaceutical and health industries. It is also widely used in hospitals for sterilisation purposes. The industries within which steam is used range from huge oil and petrochemical plants to small local laundries.


Further uses include the production of paper, textiles, brewing, food production, curing rubber, and heating and humidification of buildings. Many users find it convenient to use steam as the same working fluid for both space heating and for process applications.


According to steam specialist Spirax Sarco, most of the flowmeters currently used to measure the flow of steam were originally designed for


8 www.engineerlive.com


measuring the flow of various other liquids and gases. Very few have been developed specifically for measuring the flow of steam.


The company warns that steam flow meters cannot be evaluated in the same way as other items of energy saving equipment, or energy saving schemes.


“The steam flowmeter is an essential tool for good steam housekeeping. It provides the knowledge of steam usage and cost which is vital to an efficiently operated plant or building,” says the company.


The main benefits for using steam flowmetering include: plant efficiency; energy efficiency; process control; costing and custody; and plant efficiency. A good steam flow meter will indicate the


flowrate of steam to a plant item over the full range of its operation - from when machinery is switched off to when plant is loaded to capacity. By analysing the relationship between steam flow and production, optimum working practices can be determined.


The flowmeter will also show the deterioration of plant over time, allowing optimum plant cleaning or replacement to be carried out. The flow meter may also be used to: track steam demand and changing trends; establish peak steam usage times; and identify sections or items of plant that are major steam users. This may lead to changes in production methods to ensure economical steam usage. It can also reduce problems associated with peak loads on the boiler plant. n


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