34 AIRMONITORING
The first-of-its-kind lidar-based atmospheric measurement device provides atmospheric, cloud height, and mixing layer data with depolarisation
Vaisala have announced the launch of Vaisala Lidar Ceilometer CL61, an unprecedented lidar ceilometer that improves standard ceilometer reporting by leveraging depolarisation technology, providing more refined and accurate data for greater situational awareness.
“With today’s constantly changing climate, meteorological organisations, environmental protection agencies, and airports need greater ceilometer performance to enable more accurate weather modeling,” said Samuli Hänninen, VP, Products and Technologies, Weather and Environment, Vaisala. “Our state-of-the-art ceilometer breaks through the ceiling in this meteorological technology to deliver high-quality profiling data that provides the insights needed to improve numerical weather prediction (NWP) models, understand icing conditions, and track particles such as smoke, volcanic ash, or sand plumes.”
CL61 leverages Vaisala’s cutting edge weather intelligence technologies to deliver uninterrupted, comprehensive, round-the-clock profiling data, even in the harshest weather conditions, for improved understanding of atmospheric conditions. The data provided by the instrument can be used to correct air quality modeling, provide data verification, and enable nowcasting for safer air travel and operations. CL61 also features enhanced single-lens optics, significantly improving signal-to-noise ratio, to provide high-resolution backscatter profiles — all in a cost-efficient design.
Vaisala Lidar Ceilometer CL61 offers more refined profiling data for deeper insights. The depolarisation measurement capabilities enable accurate liquid/frozen differentiation, detection of dust, sand, and volcanic ash layers, and the ability to make short-term forecasts of precipitation. CL61 is operative 24/7 in all weather and locations. Scientific research-grade instruments have limitations on conditions (e.g., they typically can only be used when it is not raining), but CL61 is operative 24/7 in all weather, providing constant data availability regardless of prevailing weather conditions, and fills coverage gaps in urban areas. In addition, CL61’s depolarisation measurement provides data enabling the detection of volcanic ash eruptions, which can have significant effects on communities and their economies. CL61 also leverages proven single-lens optics, CL61 can exclusively and reliably detect low-altitude phenomena, such as clouds and shallow aerosol layers.
This unique device also offers cost-efficient pricing. With functionality previously only available in scientific research-grade ceilometers, CL61 is significantly more affordable than devices delivering similar data. Operators will also be please with how easy it is to install and maintain. Using common data formats for easy integration with existing networks, CL61 installs from box to operation in just one hour. Plus, with no consumables and no field calibration required, CL61 is virtually maintenance-free, minimizing the lifetime cost of ownership.
“Today’s meteorological networks need to provide more detailed, accurate, and reliable atmospheric data and insights than ever before,” said Johanna Lentonen, Director, Weather Instruments, Weather and Environment, Vaisala. “The flexible and cost-effective CL61 was designed with these requirements in mind to empower decision-makers in weather, aviation, air quality management, and research institutes to integrate the device into existing networks and establish new networks as well as measurement campaigns.”
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Multigas analyser eliminates dangers of leaking anaesthetic gases
Anaesthetic gases which leak into surrounding air during medical operations can cause the medical staff to experience nausea, dizziness, headaches, fatigue and even very serious conditions such as cancer. For this reason there are strict limits for anaesthetic gas concentration in air.
Medical staff can be exposed to waste anesthetic gases in many ways: gas can escape from around the patient’s anesthesia mask, there may be leaks in the anesthesia system or gas may escape whilst purging the system. In addition, patients can exhale anesthetic gases for several days after surgery.
ETG’s latest FTIR multigas analyser, the FTIR 9500, uses full spectrum infrared analysis and can measure all anaesthetic gases simultaneously. The FTIR 9500 is a high resolution and compact analyser with a DTGS detector that operates at room temperature and is ideally suited for measuring all halogenated and other compounds ubiquitous in anaesthetic gases such as Halothane, Isoflurane, Sevoflurane and Desflurane.
The ETG 9500 FTIR is a truly compact multigas analyser; it can detect more than 100 compounds simultaneously. It can be delivered as transportable system, configurated to suit the operator’s specific criteria, also available on 19” rack mounting as well a desk version for use in labs and for R & D.
ETG’s ChemoCalc software includes all the necessary options, settings and views for basic, everyday measurements, and requires no previous experience to operate. The software supports touch screen devices as well, providing easy and efficient processing of the results in the field.
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Rapid, reliable and simultaneous ppb level monitoring of formaldehyde, acetaldehyde and methanol in ambient air
The airmoHCHO online analyser from Chromatotec performs uninterrupted, reliable and simultaneous monitoring of formaldehyde (HCHO), acetaldehyde and methanol in ambient air. This user-friendly and highly dependable auto-GC-FID based system offers rapid ppb level data in a 30 minute cycle time as there is no need for time consuming sample preparation. This cylinder free airmoHCHO solution controlled by GC is available in rack or wall mounted box.
This robust analyser features a carrier gas back- flush to clear the GC of potential contaminants that could adversely affect the system. There is no requirement for cumbersome cylinders because H2 and zero air generators are part of the system, along with calibration units to lower maintenance and operating costs and labour.
Chromatotec’s integrated Vistachrom software enables data to be displayed as results tables or chromatograms, making it easy for numerical results to be reviewed. For further peace of mind, results are automatically validated by an internal HCHO permeation tube included with the analyser.
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