Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The New SFC Series: Systematic Measuring and Controlling

05.05.2008
The flexible SFC devices from Siemens Water Technologies constitute a new measuring and controlling series which complements the concept of the multi-functional MFC system. The SFC series is intended for single measurements of water parameters as is necessary in simple applications.

One main function is controlled chemical dosing which is used when disinfectant has to be added, for example. The series of devices matches the MFC system not only in terms of design and dimensions but also in terms of the range of functions. The two types of device are based on the same software and can therefore be combined and communicate with each other via a CAN bus.


Potable water works, industrial processes such as in the food industry, cooling water circuits, and the treatment of boiler feed water are possible areas of use. The SFC devices can also be combined with the Depolox Pool and PCS Plus measuring and control units, which are specially designed for swimming-pool water treatment.

Depending on the application, the SFC system can be fitted with different measuring modules. As in the case of the MFC system, it is possible to choose from several such modules: the 'Depolox 5' three-electrode sensor from Wallace&Tiernan for measuring free chlorine, chlorine dioxide, ozone and potassium permanganate; combination electrodes for measuring the pH value and redox potential; conductivity electrodes; fluoride electrodes. Membrane sensors for measuring free chlorine, total chlorine, chlorine dioxide and ozone are also available. In addition, sensors with a standardized current or voltage output (e.g. 4 to 20 mA) can be connected. This makes it possible to measure any particular parameter. The measuring range and the unit of measurement can be adjusted as required.

The specific plug-in card which belongs to each sensor makes the SFC system into a distinct measuring system for the respective sensor. The card is used to implement measuring-range limits and pre-settings and makes basic parameterization of the device much easier. Thanks to the possible types of control which are integrated into the SFC system, Siemens Water Technologies enables the special forms of control needed in water treatment applications. Like the MFC system, the single-parameter SFC device can be used for fixed-value control, ratio control or a combined form of control, depending on the plug-in card selected. Without a sensor, the SFC performs the role of a ratio controller, with which chemicals can be dosed in proportion to an input variable. The process controller version (SFC PC) performs functions such as parameter optimization during operation as well as combined feedforward control with a reference variable.

The SFC series supersedes the proven Wallace&Tiernan MFA plug-in measuring amplifier, the Wallace&Tiernan PCU controller and the SCU ratio controller. It performs all the previous functions and, compared to the preceding models, is easier to use and provides more possibilities of data link-up. What is also new are CAN-bus communication of the Wallace&Tiernan devices with each other and an SD memory-card slot. The ChemWeb server as well as the OPC Data Access V 2.0 server can be connected via the optional RS 485 interface, which also enables use of the CMS 3.0 visualization software.

The Siemens Industry Sector (Erlangen, Germany) is the world's leading supplier of production, transportation and building systems. Integrated hardware and software technologies combined with comprehensive industry-specific solutions enable Siemens to enhance the productivity and efficiency of its customers in industry and infrastructure. The Sector comprises six Divisions: Building Technologies, Industry Automation, Industry Solutions, Mobility, Drive Technologies and Osram. In fiscal 2007 (ended September 30), Siemens Industry generated sales of approximately EUR40 billion (pro forma, unconsolidated) with around 209,000 employees worldwide. http://www.siemens.com/industry With the business activities of Siemens VAI Metal Technologies (Linz, Austria), Siemens Water Technologies (Warrendale, Pa., U.S.A.), and Industry Technologies (Erlangen, Germany), the Siemens Industry Solutions Division (Erlangen, Germany) is one of the world's leading solution and service providers for industrial and infrastructure facilities. Using its own products, systems and process technologies, Industry Solutions develops and builds plants for end customers, commissions them and provides support during their entire life cycle.

Wieland Simon | Siemens Industry Solutions
Further information:
http://www.siemens.com/water
http://www.industry.siemens.com

More articles from Machine Engineering:

nachricht Scientists from Hannover develop a novel lightweight production process
27.09.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH

nachricht PRESTO – Highly Dynamic Powerhouses
15.05.2017 | JULABO GmbH

All articles from Machine Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Osaka university researchers make the slipperiest surfaces adhesive

18.10.2017 | Materials Sciences

Space radiation won't stop NASA's human exploration

18.10.2017 | Physics and Astronomy

Los Alamos researchers and supercomputers help interpret the latest LIGO findings

18.10.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>