Water Journal : Water Journal December 2014
water DECEMBER 2014 76 water Business “But most industries have not realised the potential of this green energy cash cow because they have mainly been focusing on treating their effluent to meet local discharge standards at the lowest possible investment costs. By doing so, wastewater treatment installations have only generated additional operating costs and have never been seen as revenue generators. “Applying anaerobic wastewater treatment sheds a whole different light on the cost structure of wastewater treatment infrastructure. It can now become a substantial additional source of income for many factories and processing plants throughout the Asia- Pacific and throughout the world.” For more information please visit www. cstwastewater.com FCI ST100 AERATION FLOW METER SIMPLIFIES WASTEWATER PLANT UPGRADE PROCESS Wastewater treatment plant engineers searching for a solution to flow measurement in aeration basins that is Profibus PA compatible will find Fluid Components International’s precision ST100 Thermal Mass Flow Meter provides superior accuracy combined with digital bus communication flexibility to reduce airflow energy costs. In municipal wastewater plants, the activated sludge treatment method requires the pumping of compressed air into aeration basins where a diffuser system ensures the air is distributed evenly for optimum treatment. Flow meters are typically installed in the system piping to help monitor the air that is released into the basins. Precisely controlling the airflow is necessary to promote the growth of the micro-organisms that treat the wastewater and to reduce compressed air energy costs. The advanced ST100 Flow Meter is ideal for this task because of the meter’s accurate performance over a wide flow range, ease of installation, low-maintenance requirements and digital bus communications versatility, including Profibus PA compatibility. Digital bus communications such as Profibus PA bus ensure flow meters and other process automation field devices are interoperable and compatible through an industry standard bus. The current version of Profibus PA includes many functions that simplify the handling of field devices, including the exchange of one field device for another device from a different manufacturer during routine plant upgrades. The ST100 Flow Meter with Profibus PA gives wastewater plant engineers excellent device flexibility while providing superior accuracy and reliability in harsh environments. Profibus PA communication facilitates plant system retrofits through a seamless integration process for new field devices including flow meters, which saves time and money. The ST100 meter’s insertion style configuration makes it a simple drop-in replacement where older technology meters were installed previously in wastewater plants. With the ST100 meter, engineers and technicians can easily manage multiple fluid flow process variables and configure the meter remotely from the safety of the control room. Whether the need is for Profibus, Fieldbus, HART or Modbus, 4-20 mA analogue, frequency/pulse, or alarm relays, the ST100 Flow meter is the versatile communication solution. If a plant’s communication needs change, the ST100 meter adapts with a plug-in card replacement that can be changed out in the field. The ST100 Flow Meter’s unique graphical, multivariable, backlit LCD display/readout brings new meaning to the term “process information”. It provides the industry’s most comprehensive information with continuous display of all process measurements and alarm status, and the ability to interrogate for service diagnostics. The user-friendly ST100 stores up to five unique calibration groups to accommodate broad flow ranges, differing mixtures of the same gas and multiple gases, and obtains up to 1000:1 turndown. Also standard is an on-board data logger with an easily accessible, removable 2-GB micro-SD memory card capable of storing 21 million readings. The ST100 can be calibrated to measure virtually any process gas, including wet gas, mixed gases and dirty gases. The basic insertion style air/gas meter features a thermal flow sensing element that measures flow from 0.07 NMPS to 305 NMPS with accuracy of ±0.75% of reading, ±0.5% of full scale. Designed for rugged industrial processes and plants, ST100 Flow Meters include service up to 454°C and are available with both integral and remote up to 300 meters electronics versions. The ST100 has the industry’s most comprehensive set of instrument approvals. The ST100 is approved for hazardous environments, including the entire instrument, the transmitter and the rugged, NEMA 4X/IP67 rated enclosure. Approvals include: SIL 1, ATEX, IECEx, FM, FMc, CPA, Inmetro, GOST-R and more. For more information please visit www.ams-ic.com.au SCADAPACK 500E SERIES RTU/RPAC, COMBINES THE POWER OF A PAC WITH THE VERSATILITY OF AN RTU By combining the functionalities of an RTU and a PAC, the SCADAPack 500E series rPACs allow operators of remote assets in the oil and gas, water and wastewater, and renewable energy industries to monitor and control assets through a single device. Maintain crucial and dependable communications in harsh, dispersed environments. One of the outstanding features of the SCADAPack 500E series rPACs is the increase in execution speed. It is fitted with a 32-bit processor sequenced at 500 MHz and more than 250 MB of high-performing memory. This allows the SCADAPack 500E to be at least 20 times faster than a standard RTU, while still able to be powered from solar panels, batteries or wind turbines. SCADAPack 500E series rPACs use open standards and programming environments to provide outstanding flexibility and versatility. Using a 20,000-point database and various open standard telemetry and industrial protocols, it can connect with up to 29 active SCADA masters, 100 remote/local slave devices and 100 remote Distributed Network Protocol (DNP) devices in peer-to-peer configuration. A data concentrator and protocol converter in each rPAC allows devices to communicate whether using DNP3, Modbus or DF1 protocols. Benefits include: • Reduced Total Cost of Ownership for today’s needs and for future evolution; • Enhanced security and reliability of remote operation; • Increase I/O capabilities without the need of a separate PAC. For more information please contact Schneider Electric on 1300 369 233.
Water Journal November 2014
Water Journal February 2015