Water/Wastewater
internal lining, magnet coils connected in series and secured diametrically on the pipe and at least two electrodes inserted through the pipe wall and in contact with the measured medium. As a result of the technical construction, a MAG meter is always delivered as a pipe section. This means that the flow must be interrupted in order to install the sensor, a section of the pipe removed and a flange welded on depending on the type of connection, e.g. with a steel pipe. Since there are no moving parts, the instrument generates a negligibly small pressure loss in the pipeline network.
Figure 4: The battery-operated Sitrans MAG8000 electromagnetic water meter is also available with integral GSM/GPRS communication
Flow technologies for water applications
In addition to the clamp-on procedure preferred for detecting leaks, Siemens offers appropriate flow technologies for further water supply applications.
In the case of the ultrasonic flowmeters of type Sitrans FUS Sonokit, the sensor surfaces are directly in contact with the medium – in contrast to the clamp-on procedure. The ultrasonic signal is therefore transmitted directly between the transducers. The advantage of this procedure is the exceptionally high signal strength.
The installation is carried out using a gate system without interrupting the supply ("hot tap"). Minor pipework is required to install the transducers in existing pipelines. An advantage is that the battery-operated Sitrans FUS080 also allows measurements without a power supply.
The measuring principle of the electromagnetic flowmeters (MAG meter) is based on Faraday's law of induction. The MAG meter consists of a metering tube with a magnetically non-conducting
To prevent microbiological growth, a special internal lining with drinking water approval is used for the Sitrans FM MAG8000. The devices are water-tight in accordance with IP68. Therefore the installation type and location is highly flexible and cost-effective for this equipment (flooding and direct burying possible). The transmitter can be installed in compact form on the sensor or also remote at a readily accessible location. The electromagnetic flowmeters have an impressively high accuracy (see table). They are approved for custody transfer in Europe in accordance with the new Measuring Instruments Directive MI-001, i.e. they can also be used for billing purposes; straight inlet and outlet pipe sections are not required.
In the case of a power failure, a backup battery for the Sitrans FM MAG8000 ensures that the equipment continues to measure. If a power supply is not available at the measuring location, the water meter can also be operated completely using batteries with a service life of up to 10 years. The instrument has an integral data logger and the measured values can be transmitted via a pulse output, Modbus RTU, or wireless over GSM/GPRS.
Sitrans FM MAG8000 benefits: • Drinking water approvals
• Water meter with type approval certificate and verification in accordance with OIML R49/MI001 for custody transfer for water billing purposes
• IP68/NEMA 6P enclosure, for compact or separate installation, with connectors and preassembled cable
• Sensors suitable for underground use or installation under water • Detection of low flow rates with minimum pressure losses
• Reliable, long-term and interruption-free battery operation (internal or external battery packs) without additional power supply
• No moving parts, therefore long-term stability and accuracy • Comprehensive diagnostics functions and self-test
Conclusion
The demand for clean drinking water is rising, and it is becoming increasingly scarce as a valuable resource – a pressing global problem of our time. The reduction in water losses due to leaks in supply networks can help meet this challenge.
The Siwa LeakControl system can be used in the public pipeline network without fixed zone limits. A strategic distribution of the measuring points enables optimum adaptation of the monitoring system to any existing supply configuration. Whether ultrasonic clamp-on or MAG meter, Siemens offers its customers all modern flow measuring technologies. A further asset: the flexible solution from Siemens for reduction of water losses allows extremely simple integration of water meters already present in the supply network.
Whether for a small municipality or a large metropolis, the flow measuring technology, controller, communication and evaluation can be tailored to customer requirements thanks to the modular principle. In addition to this, Siemens offers support covering hydraulic advice, selection and installation of the measuring points and exact localisation of leaks.
References
[1] Michael Heydenreich, Winfried Koch, Praxis der Wasserverlustreduzierung, DVGW-Fachbuchreihe Praxis 2008
[2] M. Heydenreich , DVGW Schrift Verluste in Trinkwassernetzen, Verfahren und Techniken, 2007
[3] DVGW Arbeitsblatt W392, Rohrnetzinspektion und Wasserverluste, Maßnahmen, Verfahren und Bewertungen
31
Making a Splash in Water Analysis
BioTector (Ireland) is honoured to win the prestigious Frost & Sullivan Product Leadership Award 2012 in the United States Water & Wastewater Analytical Instrumentation market.
Global research organisation Frost & Sullivan assessed the performance of BioTector analysers against key competitors using criteria such as product features & functionality, innovation, product acceptance in the marketplace, value-added enhancements and product quality.
According to Eric Meliton, Industry Analyst with Frost & Sullivan's Environmental Technologies team, "The Product Leadership award is a prestigious recognition of BioTector's accomplishments in the analytical instrumentation market. By combining strategic business expansion efforts with product innovation, BioTector has reinforced it's overall market position, while focusing on product features and functionality, customer value, and overall product quality. These efforts have strengthened the innovative elements of BioTector's product lines, while enhancing their acceptance within the analytical instrumentation market."
In its Best Practices research report, Frost & Sullivan stated, “BioTector constantly develops add-on value services and extends its product line to accommodate ever-evolving needs in the market place” and “through Best Practices and a compelling word-of- mouth reputation, BioTector Analytical Systems successfully developed robust organic growth across the U.S.”
A delighted CEO, David Horan, commented, “Getting such recognition from our industry is priceless. The Frost & Sullivan Award is a great acknowledgement of the efforts and expertise of both our team here in Ireland and our distributors globally. Confirmation that we’re also the market leader in the United States with 25-30% share is very rewarding to all those who work so hard in this market, and we would hope to see similar market leadership in Europe and other markets in the future.”
Reader Reply Card No. 180
When contacting companies directly from this issue of International Environmental Technology
please tell them where you saw their product. Thank you
Reader Reply Card No.
www.envirotech-online.com 181 IET September / October 2012
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76
