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Air Monitoring FTIR Air Monitoring System


The open path FTIR Air Monitoring System from MIDAC (USA) is compact, versatile, and rugged. Designed to detect, identify and measure a wide range of key contaminants simultaneously, it has been used in many different configurations to address a diverse list of applications. Analysis is onsite through a continuous sampling path of up to 1000 meters. Whether the application is battlefield chemical warfare agent analysis, civilian hazardous event response, industrial stack and/or fenceline monitoring, rocket plume analysis, analysis or environmental research (such as volcanic gas analysis), the MIDAC AM System can provide continuous, unattached, near real-time detection at ppb to % levels for hundreds of chemicals.


Each system includes a rugged, sealed 0.5cm-1 resolution interferometer equipped with a choice of beamsplitters and detectors. The analyser is coupled to a control PC via standard ribbon cable or long range fiber optic link. For extended sample paths, the FTIR can be mounted to a rugged, 10’ Newtonian telescope with tripod. A high energy infrared source module on the opposite end of the sample path completes the system. Weighing approximately 40lbs. and measuring just 8’ x 14’ x 8’(WxDxH), the compact interferometer module is easy to transport and can be powered by a 12V car battery for complete freedom of movement. An optional lightweight sheet metal version of the FTIR is also available with a compact 3’ telescope.


Reader Reply Card no 131


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Meteorological Instruments


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Reader Reply Card no 132


New International Website for Air Quality Monitoring Instrumentation


Ecotech (Australia) is proud to announce the launch of their new international website www.ecotech.com


The benefits of www.ecotech.com are outlined below:


Access to detailed information on instruments, specifications and applications. Access to spare parts and consumable lists along with a vast downloadable library of resources to compliment their instruments such as manuals, firmware, software, technical notes etc. View our exhibitions list to find us around the world Find our local distributor's contact information Hear about our latest products and releases


This website will act both as an information centre for people researching air quality monitoring instruments, and also as a portal through which Ecotech can ensure its customers and distributors have all the resources they require.


For more information visit www.ecotech.com or email info@ecotech.com Reader Reply Card no 133 Syngas Analysis


Syngas (synthetic gas) is a mixture of hydrogen and carbon monoxide usually formed by gasification and used as a fuel or intermediate in production of ammonia or ethanol. The gasification process can use a wide variety of organic waste as substrate. Therefore these projects are high on the agenda of many waste-to- energy companies.


Hitech Instruments, the UK gas analyser specialists, are experts in hydrogen analysis using katharometers (thermal conductivity sensors). The K1550R hydrogen analyser is available to measure hydrogen in a background of nitrogen and carbon monoxide as a standard product. However, with syngas usually containing a significant percentage of carbon dioxide a compensation input can be provided for this. The IR600 carbon dioxide analyser from Hitech can provide this input. Thus Hitech provide a solution for all the gases of interest in this application.


The K1550 hydrogen analysers are available in different configurations providing solutions for hazardous area applications. The simplest solution is to mount the remote sensor in the hazardous and connect to the electronics unit via an MTL barrier. Alternatively the electronics can be mounted in an Ex enclosure for full hazardous area use. Hitech Instruments is part of the MTL Instruments Group, a world leader in intrinsic safety and a part of Cooper Crouse-Hinds.


A bypass flow sample system is also available for fast response when the sensor needs to be remote from the process. Hitech manufacture a number of sample systems both as standard items and bespoke products for specific applications.


Reader Reply Card no 136 Reader Reply Card no 134 Hum


Trace Moisture Standards in Reactive Gases


Span Pac™ H2O-R Moisture Standards Generators from KIN-TEK (USA) create known calibration standards of trace moisture in reactive gases such as chlorine and HCL. These systems use Trace Source™ permeation tubes to dynamically add a known amount of water vapor to a flow of dried reactive matrix gas.


Concentrations from < 10ppb to over 100ppm are possible by selecting suitable permeation tubes. At any concentration level, multi-point calibrations over a 400:1 range are easily achieved.


The Span Pac™ H2O-R method is based on the standard additions technique. A small flow of dry inert gas flows


over the Trace Source™ permeation tube to create a base moisture standard. A variable portion of the base mixture is added to a flow of the reactive gas to form the calibration standard. Calibration is based on the change in concentration due to addition of moisture from the Trace Source™ permeation tube. This method compensates for residual moisture in the dry matrix gas. Mixture concentrations are traceable to NIST through physical standards.


Applications include on site moisture monitor calibration and production of controlled atmosphere for catalysis studies, corrosion rate studies and filter capacity tests.


AET


April/May 2010


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