30 Air Monitoring Wind: a key parameter
for air quality measurement Wind is one of the most important meteorological parameters for the transport and dispersion of pollutants.
LCJ Capteurs offers a range terrestrial wind vane-anemometers that are supplied either with mounting accessories (either with an external power supply or self-powered) or as OEM solutions to be incorporated into the end-user’s own system.
These devices are compatible with all interfaces used on weather stations and most automation systems. LCJ Capteurs can also create tailor-made solutions in accordance to their customers’ unique specifi cations (built-in datalogger, power consumption, resolution, sampling rate etc …).
LCJ Capteurs’s ultrasonic, twice patented, measurement technology has become a fi rst choice
for wind speed and direction measurement, with each sensor tested in a wind tunnel, a climatic chamber (from -15°C, without ice, to +55°C), and on an aging bench. Each test is recorded to logged to each instrument’s serial number.
LCJ Capteurs have been designing and manufacturing static ultrasonic wind sensors, renowned for their high level of performance within both marine and terrestrial fi elds since 1999. The company has constantly upgraded and developed new devices to ensure that their customers can depend on LCJ Capteurs to provide cutting-edge products that are precise, reliable and durable, as well as economical.
Located near Nantes, France, LCJ Capteurs have always strived to develop sensors for wind measurement that are static, robust, marinised, lightweight, compact, accurate - with low power consumption. LCJ Capteurs, whose sensors are now ubiquitous in the marine and terrestrial markets, offers wind and air fl ow measurement solutions that are proven to be reliable over time, with no maintenance.
Since the company broke into the terrestrial market in 2010, LCJ Capteurs’ wind vane anemometers have been adapted to meet the needs of a wide variety of end-users such as weather station integrators, connected agriculture systems, wind farms, the sports sector, air quality/pollution management systems, fi re departments, amusement parks and smart buildings, to name just a few. For More Info, email:
FM4, the new PFAS Air Sampler
PFAS have been under a magnifying glass for some time now. At the time of their discovery, PFAS was being closely watched due to its unique features. Since then, PFAS structures with different qualities have been developed. Today, PFAS are being closely monitored due to being bioaccumulative and persistent. This results in both environmental and health issues. While over 5000 different PFAS structures are currently known, only 250 types are of such interest that they should be monitored. However, this number is growing. Due to their posing risks, new applications are being released on a monthly basis.
Most new methods focus on extracting PFAS from soil- and water samples. The latest detectors and SPE methods are advertised across the market. Most samples are analysed using LC/MS. The sampling of PFAS in water is well described in ISO 21675. The detection of PFAS in air is not yet well described. It has been shown that PFAS can have an atmospheric residence time of up to 80 days. There are methods available that include sampling PFAS on Thermal Desorption tubes, they are being analysed with TD-GC- MS. However, they do exclude some specifi c PFAS types.
PFAS in air comes in different forms, neutral and ionizable. It has been suggested in several articles that the composition of PFASs forms in the air is different from the composition after having been collected by sampling equipment. In collaboration with dr. Yamashita, co-author of ISO 21675, an air sampler, the FM4, has been developed to address this issue. The FM4 is designed as a cascade impactor, followed by a PUF fi lter. The last fi lter used is a newly developed GAIAC ™ fi lter. Once collected, the PFAS can be extracted by washing all fi lters. The used analysis techniques are both LC/MS and GC/MS for the different fi lters.
While the damage that is done by all the different PFASs is still not fully understood, the awareness of the PFAS risks have grown signifi cantly. The FM4 is the fi rst huge step in recovering the presence of PFAS in air. For more information on the FM4, please visit GL Sciences.
More information online:
ilmt.co/PL/Y04p For More Info, email:
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Range of combustion measurement solutions improves the effi ciency and environmental performance of industrial processes
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AMETEK Land is supporting customers in their environmental goals by providing a range of solutions for measuring the products of combustion.
To protect public health and the environment, the industrial emissions of smoke and toxic gases are regulated, and plant operators must monitor and report these emissions to demonstrate compliance with regulations.
AMETEK Land offers a range of solutions to fi t different process needs, including periodic fl ue gas measurements, cross-stack monitoring, extractive sampling, and continuous emissions monitoring systems (CEMS).
These solutions include portable and fi xed emissions monitors as well as non-contact thermometers, delivering measurements that can improve the effi ciency and environmental performance of many industrial processes.
For example, the Lancom 4 portable fl ue gas analyser is a rugged, versatile analyser that measures up to eight fl ue gases simultaneously, and is ideal for periodic checks to demonstrate compliance, and for performing quick checks before stack testing. While it has limited functionality compared to a CEMS, it offers an inexpensive alternative for smaller processes where using a CEMS would be uneconomical.
At the other end of the scale, AMETEK Land offers the FGA900 Series multigas analyser, a compact, self- contained CEMS that measures carbon monoxide, nitric oxide and oxygen. Cross-stack opacity monitors, such as the reliable Model 4500 MkIII, are also available for measuring particulate matter in fl ue gases.
Additionally, AMETEK Land has decades of experience in non-contact temperature measurements for industrial applications, with an extensive range of fi xed and portable spot measurement pyrometers. These can provide measurements that optimise many industrial processes to reduce the output of harmful emissions.
“Accurate fl ue gas measurements are the key to reducing pollutant emissions, reducing fuel cost and minimizing the production of carbon dioxide,” said Derek Stuart, AMETEK Land Product Manager.
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IET SEPTEMBER 2022
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