32 Air Monitoring Mars Rover Curiosity Equipped with Pressure and Humidity Sensors


As NASA's Mars Curiosity rover is examining the soil in the Gale Crater to see if it ever offered conditions favourable for supporting life, Vaisala's (Finland) pressure and humidity sensors onboard the rover are also hard at work. The sensors are on Mars as a part of instrumentation designed by the Finnish Meteorological Institute (FMI), and they are used to gather pressure and humidity readings in the extreme environmental conditions of the Martian atmosphere.


Vaisala has provided the project with standard Vaisala HUMICAP humidity sensors and specially customised Vaisala BAROCAP pressure sensors. First introduced in 1973, Vaisala HUMICAP was the world's first thin-film capacitive humidity sensor and a radical innovation that changed humidity measurements for good. Similarly, Vaisala BAROCAP was developed in early 1980s as a new pressure-sensing technology based on silicon processing.


Both sensor technologies are used widely in Vaisala's own humidity and pressure sensing products and systems. Thanks to their superior long-term stability and accuracy as well as their ability to tolerate dust, chemicals and otherwise harsh environmental conditions, the technologies are especially suitable for demanding industrial applications used by a wide range of industries from power and steel to life science and building automation.


Reader Reply Card No. 101 Airmozone Solution for 88 VOC Analysis


Ozone concentration has been multiplied by 5 in the last century in the middle latitudes of the northern hemisphere from 10 ppb in 1874 to approximately 50 ppb today.


In order to stop this evolution, directives have been written concerning the reduction of ozone precursors emissions (NOx and VOC) to define national emission maxima.


That is why, specific Chromatotec (France) instruments have been designed to meet those new requirements in compliance with EN 14 662-3 (for benzene measurement).


Chromatotecs complete solution Airmozone A52022- TO14/PAMS offers the possibility to analyse up to 88 compounds (35 on airmoVOC C2C6 (with cyclohexane on C6C12) and 53 on C6C12 with 1,2,4-Trichlorobenzene / Hexachloro-1,3,Butadiene and C12 (N-DODECANE))


There are no interferences on 10 compounds which can potentially interfere with benzene in compliance with EN 14 662-3. The analyser is linear: range 0 / 100 ppb (0/325 µg/m3). The instruments are fully automated thanks to internal calibration (airmoCAL).


Reader Reply Card No. 102 Gas Sampling Probe Series – A Success Story


JCT Analysentechnik (Austria), specialist company in the field of gas conditioning and emission monitoring, is continuously developing their products to offer their partners and customers more comfort and highest technical standards. Special effort was taken over the last years to upgrade and to expand the JES 301 product family of gas sampling probes.


Now JCT can provide gas sampling probes that comply with a whole range of process applications where continuous monitoring is required, even in hazardous areas. The JES 301 series covers unheated, steam heated and electrically heated models for different temperatures. The wide range of options and accessories includes back purge port, calibration port, shut-off valve, sampling tubes and different filter types.


The new variety and the familiar top quality were rewarded by JCT´s customers: the number of probes produced in the Austrian factory tripled. JCT probes are delivered worldwide.


Reader Reply Card No. 103


The most recent development is the JES 301L series for gas sampling in standard emission monitoring conditions. The probe includes a high power self limited heating element and price / performance ratio is outstanding.


Reader Reply Card No. Accurate, Fast Response with Emissions Monitoring


Tiger Optics (UK) introduced the world’s first commercial “Continuous Wave Cavity Ring-Down Spectroscopy” (CW CRDS) analyser in 2001. Their single and multi-component instruments can detect contaminants down to low parts-per-trillion concentrations and across a wide dynamic range in a variety of gas matrices. The list of detectable species includes many that are relevant to continuous


emissions monitoring applications; including HCl, HF, H2S, HCN, NH3, N2O, CO, CO2, and CH4. The list of detectable species continues to increase as the company responds to customer needs with the development of new products. Approximately 1,500 robust Tiger units are now at work in such demanding environments as semiconductor fabrication plants, industrial and speciality gas manufacturing facilities, chemical plants, and the metrology institutes of 18 nations.


Tiger Optics instruments provide absolute accuracy, fast real-time response, high sensitivity, freedom from external calibration, exceptional ease of use and superior cost-of-ownership compared to other analysers.


Example environmental applications include continuous emissions monitoring, verification of fuel cell grade hydrogen quality, the long-term measurement of background greenhouse gases and the monitoring of their emission at source - methane from agricultural and landfill facilities for example - clean manufacturing, and the monitoring of indoor air quality.


Reader Reply Card No. Newly Certified PM Monitor


Teledyne Advanced Pollution Instrumentation (USA) is proud to announce a new system for the continuous automated monitoring and sampling of particulate matter (PM) contained in ambient air. The Model 602 BetaPLUS instrument combines field-proven beta attenuation analysis with dual-channel, sequential sampling technology yielding simultaneous PM10, PM2.5 and PM10-2.5 mass concentration results every hour.


The instrument has inherent design characteristics which eliminate background artifacts, such as radiation and humidity, providing results which closely match the Federal Reference Method (FRM) samplers regardless of season or location, and without the need for any internal corrections or adjustment factors to the data. The background radiation count data is recorded hourly and can be used to assess regional Atmospheric Stability, which is useful for determining root causes of air pollution events.


The system is the first to receive US EPA FEM Certifications for all three parameters (PM10, PM2.5 and PM10-2.5) simultaneously in a single instrument. Visit Teledyne's website for further information on this new continuous PM monitoring system (www.teledyne-api.com).


Reader Reply Card No. 106 AET Annual Buyers’ Guide 2013 www.envirotech-online.com Reader Reply Card No. 107 105 104


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