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Air Monitoring


Ultrasonic Anemometer Passes Ice Free Operation Test


Last year, Lufft (Germany) released the robust Ventus ultrasonic wind sensor with corrosive resistant metal housing to the wind turbine industry. Already used in numerous environmental applications around the world. Lufft intelligent weather sensors are ideal for wind turbine applications in extreme environmental conditions such as a northern winter of offshore, according to the company.


The ultrasonic wind sensor is designed without mechanical parts like the traditional “cups and vanes”. The digital or analog output delivers instantaneous average, minimum, or maximum value with flexible measuring rate.


The Ventus ultrasonic wind sensor includes a 240W heater for use in cold weather climates. In late 2009, the Lufft wind sensor passed a military standardized ice test proving the Ventus wind sensor works well for ice-free operation. The test involved one hour of extreme cold followed by four hours of blowing rain at a temperature of –1.4o througout the test.


C. The data quality remained positive Reader Reply Card no 107 Air Quality & Dust Monitor


UNITEC (Italy) has further upgraded its field-proven microprocessor-based air quality monitor ETL3000, by adding an optional light scattering particulate module, PM10-LS, and providing the measuring system with new VPN functionalities achieved by means of a multi standard GPRS/EDGE/3G router.


ETL3000 is equipped with up to 5 SENS3000 Plug&Play cells, each one specifically


designed for monitoring CO, NO2, C6H6, O3, CH4, NOx, NH3, H2S and SO2. In addition air temperature, relative humidity and noise can be simultaneously measured. SENS3000 is based on thick-film sensors, a solid state technology which takes advantage of nano- structured Metallic Oxides Semiconductors (MOS technology).


PM10-LS module includes pump, inlet head, particulate detector and the pneumatic line. The main microprocessor handles all activities, including data acquisition, data treatment and storage, automatic daily zero calibration and data transmission. Two different cyclones can be fitted at the inlet line, in order to determine PM2,5 or PM10 fractions.


ETL3000 is specifically designed for outdoor installations and offers an “Eco-friendly” impact. It can be effectively used, for instance, by local Authorities, Industrial Wastes and Building Yards to monitor air quality at ppb level.


ETL3000 provides quality data at an affordable price, requiring low maintenance with a low cost of ownership. Along with the ETL3000, UNITEC S.r.l. portfolio includes following additional instruments, internally designed and all dedicated to the environmental monitoring: LSPM10 and ETL DUST, light scattering dust monitors (PTS, PM1, PM2,5 and PM10); AIRGENIUS, light scattering dust monitor combined with a sequential sampler; OGD3000 multi gas calibrator; AIR3000, zero air generator; MGA, multi gas analyser.


Reader Reply Card no 108


Real Time Monitoring Using Particulate Samplers


Ecotech (Australia) is pleased to announce the release of a real time particulate module for use with its range of particulate samplers. High Volume Air Samplers are designed to sample ambient air through a pre-weighed filter for 24 hours after which the filter is weighed and PM concentration calculated. While there are approved methods for semi-real time monitoring such as the Tapered Element Oscillating Microbalance (TEOM) and Beta Attenuation Monitors these instruments are costly, require significant maintenance as well as an air conditioned enclosures.


The real-time particulate module is combined with a high volume air sampler providing both instantaneous measurements of PM10 or PM2.5, along with compliance data collected by the sampler.


The HighVol 3000 high volume air sampler is U.S. EPA approved as a Reference Method for PM10 sampling and can also be fitted with a PM2.5 inlet. Combining it with the new Real Time Particulate Module enables near real time measurement of ambient PM concentrations to be measured and logged by the sampler. Measurements made by the real time monitor can be logged as one, five, ten, 15 or 30 minute averages.


The Real Time Module conditions air samples for RH then passes them through a forward light scatter laser nephelometer engine where the particulate mass is measured. A purge system protects the optics from excessive exposure to dust particles. The mass signal is continuously scaled to an analog voltage output which represents the real-time particulate concentration


The sampler can be fitted with a modem for remote downloading of data such as particulate concentration, flow, wind speed and direction. Gravimetric data calculated from weighing of the high volume samplers filter can be used to create a correlation factor for the real time monitor or can be used to backwardly correct data measured by the real time module.


The Real Time Module is compatible with the Ecotech


HiVol 3000 high volume air sampler, MicroVol 1100 low volume air sampler and the Ecotech Serinus range of gas analyzers. In fact it can be used with a variety of other instruments such as the Met One BAM1020.


Reader Reply Card no 109 Long-Term Sampling System for Continuous Dioxin Monitoring


Government agency regulations for dioxin emissions monitoring require an 8 hour manual sampling procedure for which complicated equipment, highly skilled technicians and extensive on-site preparation time are necessary. Short-term sampling does not provide representative data.


Currently there are no on-line monitoring system for dioxins and furans. In order to meet regulatory needs for emissions data for dioxins and furans, the AMESA® automated long-term sampling system from Environnement S.A. (Germany) was designed in the late 1990’s. The system carries TUV and MCERTS approvals.


consist of 2 major assemblies: the sample probe with cartridge box, and the control cabinet. The fully automated system uses the modified cooled probe method. This method has been validated against the filter-cooler method of EN 1948-1 and US EPA Method 23. A primary advantage of this method is that the cartridge box will capture dioxins in all 3 phases (gaseous, solid and liquid). Accordingly sample handling is greatly simplified when compared to the cooled probe and filter cooler method specified in EN-1948.


The AMESA®


Upon completion of a sampling cycle, the XAD-II cartridge is exchanged and sent to a dioxin laboratory for dioxin/furan analysis. Beside dioxin and furans, the suitability of the system was also tested successfully for all unintentionally Persistent Organic Pollutants (u-POPs) as referenced in the Stockholm Convention.


Over the last 10 years, AMESA® has been installed in more than 160 applications globally, and in a variety of processes, including


municipal and hazardous waste incinerators, cements plants, power plants, etc. The AMESA® become the virtual standard for continuous dioxin sampling. For example, in Belgium a complete network of approximately 50 AMESA®


systems has been installed. Successful use of the equipment and data produced has resulted in the reduction of the total dioxin emissions by a factor of 20 in one region alone!


Additional features of the system include of a controller with color display and the capability for TCP/IP communications. This operation is very easily performed by use of a jog dial and the operating data protocol can be simply transferred via USB flash drive. New for 2010, AMESA-M®


version is designed for continuous mercury sampling. AMESA-M®


12B, thus meeting the requirements of the new cement and boiler MACT rules. Other options allow the system to be used for short term sampling of heavy metals, PM10 and PM 2.5.


Reader Reply Card no 110 Reader Reply Card no 111 meets the US EPA performance specification


AET August/September 2010


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