44 Water/Wastewater
Promag L 400 Flowmeter for Water and Wastewater Applications Introduced
Endress+Hauser (USA) introduces the Proline Promag L 400 electromagnetic flowmeter for water and wastewater applications. It has an Ethernet port and built-in webserver for easy data access and configuration via any web browser. The industry optimised L sensor has drinking water approvals and corrosion protection that allows it to be installed underwater, underground and in saline environments.
Sensors are available in nominal diameters from 2 to 90 in.
With the integrated webserver, the Promag L 400 can be accessed via a standard web browser. This allows engineers and maintenance technicians to configure all device functions without any special software; to upload and download configuration date for backup or copying to identical meters; and to access device, diagnostic and process information.
The Promag L 400 also has KTW/W270, ACS, NSF 61 and WRAS BS 6920 drinking water approvals, as well as custody transfer approvals to MI-001 and OIML R49 water meter standards. Accuracy is 0.2% of range. Each device is tested on accredited and traceable calibration rigs.
Seamless integration into existing control systems is assured via HART, Profibus DP and EtherNet/IP (in preparation).
An on-board HistoROM system provides data storage of all sensor, transmitter and totaliser data, with no data loss if power is removed. The HistoROM system provides a built-in data logger, has an event logbook and parameter backup, and can be restored using .xml files through the webserver.
Data can be accessed via the webserver or the local graphics display. The graphics display has guided menus, “Make it Run” wizards, 16 languages, help displays, and built-in simulation software.
Endress+Hauser magnetic flowmeters are supported by a worldwide sales and service network with the knowledge gained from over 1.5 million magnetic flowmeter sensors installed since 1977.
Reader Reply Card No. 217 Data Loggers for Hydrostatic Level Measurements
Keller (Switzerland) offers probes to monitor groundwater levels and filling levels in tanks that can be used under a wide range of conditions. Depending on requirements, these probes provide fully autonomous operation or they can be used with an integrated data logger, wireless transmission (GSM), an ambient pressure-compensating capillary or a separate absolute pressure sensor; additional options include integrated temperature measurement, etc. Depending on the sounding tube, probe diameters of 16 mm and 18 mm up to 22 mm are available.
Thanks to its diameter of only 16 mm, the DCX-16 can be used in locations where every millimetre counts (e.g. for sounding tubes with small diameters). The pressure sensor is welded into the logger housing. Type DCX-16, which is screwed in position and is fully watertight, operates as an autonomous battery- powered data collector with an absolute pressure sensor. In shallow water, a second logger (barometer) can be used for separate recording of the barometric pressure on the surface. The differential pressure and/or the filling level are then calculated in the PC by subtraction of the time- stamped measurement data from the individual loggers. Version DCX-16 SG/VG provides a cable connection, wherein barometric pressure is fed to the sensor as a reference, via a pressure- compensating capillary in the connecting cable. There is no need to remove these loggers from the sounding tube in order to read the data. The interface plug is secured on the sounding tube with a fixing device.
The fully-welded DCX-18 (diameter: 18 mm) is designed as an autonomous level logger for low-cost, long-term measurements of level and temperature, with rechargeable accumulator-type batteries. The microprocessor electronics compensate for linearity and temperature deviations by the pressure sensor, achieving a further increase in the accuracy of the pressure and temperature signals. Different operating modes, with an absolute pressure sensor or an overpressure sensor with a pressure-compensating capillary, can also be supplied for the DCX- 18. The measurement data are stored in a nonvolatile memory. The batteries are fast-charged every time data are extracted via the charging/read-out plug (which is sealed with an O-ring).
Type DCX-22 AA level loggers (diameter: 22 mm) register and compensate for fluctuations in the local barometric pressure with a watertight air pressure sensor that is fitted on the top end of the sounding tube. These devices are resistant to conditions of use in a damp environment, and will not even be damaged by brief flooding. The efficient electronic equipment registers the signals from the high-precision pressure and temperature sensors, corrects linearity or temperature deviations according to a mathematical model, and then records the values to the internal memory. For standard operation, the built-in battery has a lifetime of 10 years.
Thanks to the user-friendly GUI provided with the instrument, the DCX can be adapted to the specific requirements for the measuring point so that only useful data is stored. The recording interval can be event-controlled. Installation data and comments on the easuring point can also be stored in the probe.
For sounding tube diameters of 2” or more, the data loggers can operate in conjunction with a screw-on remote mobile wireless data transmission unit (GSM). It is then easy to send the measured values to a central unit via email or SMS. Flexible, user-friendly software that is available free of charge − the GSM-2 DataManager − then performs the key functions of a monitoring, collecting, controlling and organising unit in the central PC. The DataManager collects the measurement data, assigns them, visualises them in graphic form, signals threshold value violations as appropriate, and finally stores the data in a mySQL database (for which no licensing costs are payable). Various export and internet functions enable third parties to access the measurement data for integration into their data recording systems. Virtually every aspect of configuration and monitoring of the DCX loggers with the GSM-2 module can be handled via the GSM-2
DataManager software or via email. Reader Reply Card No. Water Disinfection Equipment Award Winner in China
UV disinfection specialist Berson UV-techniek (Netherlands) recently won the “2011-2012 Top Ten Brand in Water Disinfection Equipment” award at a ceremony in Beijing, China. It is the second time Berson has won the award.
Based on the Annual Satisfaction Index of Water Disinfection Equipment, it is widely regarded as one of the most authoritative and influential awards in the water treatment industry in China.
Based in the Netherlands with installations worldwide, Berson is world leader in water disinfection technology. Its closed-vessel UV systems are now capable of treating water and wastewater flows as high as 8,000 m3/hour.
The company manufactures UV disinfection systems for municipal drinking water, wastewater and reuse applications and is one of the few non-German UV system suppliers capable of providing a complete range of UV systems certified by the German DVGW norm, the highest standard currently possible in the world. The company’s UV systems are also certified by USEPA and NWRI and NSF.
Commenting on the award, Mr. Mark Cui, Berson’s China Sales Manager, said: “With the improvement of water quality standards in China, the importance of UV disinfection for water treatment has become much more important. The technology now widely recognized within the industry and has become popular for waterworks renovation projects in China.”
Reader Reply Card No. New Series of Chemical Dosing Pumps
Etatron GB (UK) will be launching the new eOne solenoid dosing pump range in the UK at WWEM 2012. This innovative range of chemical dosing pumps features in-built and automated sensors which will alert the user to any suction or discharge failure. In addition the pump range has been designed with a focus on energy efficiency with power consumption of 26W at maximum flow rate. The models within the eOne range include; the MA, a manually controlled dosing pump adjustable from 0 to 100%; the MF multifunction pump which can receive a 4-20 mA or reed contact water meter signal to regulate the pump’s dosing; the ST which doses based on pre-set values for the chlorine or pH levels of the water. All eOne pumps feature a ball valve pump head which ensures the series’ reliability and ability to dose accurately. The range features a maximum flow rate of 17.8 l/h and a maximum pressure of 8 Bar.
Reader Reply Card No. 219 IET September / October 2012
www.envirotech-online.com Reader Reply Card No. 221 220 218
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