Air Monitoring


Multi and Single Point Gas Analyser Suitable for a Wide Range of Applications Kinsco Technology (Korea) introduce the Airwell+7 Multi-point Remote Gas Monitoring System for measurement of methane (CH4


Dioxide (CO2 ) and nitric Oxide (N2 O).


Airwell+7 has built-in Non-dispersive Infrared (NDIR) sensors and a Tunable Diode Laser Absorption Spectroscopy (TDLAS) gas detection unit, whereby a 0.1nm narrow bandwidth diode laser beam is scanned across an absorption band of the target gas, performing a high-resolution near-infrared absorption measurement.


The sampling control system has 6 separate gas sampling ports. These ports can extend up to a maximum distance of 30 meters per point and can therefore sample a wide range of areas such as land fill sites, agricultural areas, livestock facilities and green houses.


Kinsco state that the Airwell+7 will reduce your research efforts and is a very cost effective and reliable gas analyser. It has an LAN port and can be controlled remotely by mobile phone without a special app. There is a time average sampling menu from which the user can select time intervals ranging from 5 to 60 minutes depends on the sampling distance and point. There are also 5 calibration point levels for high accuracy and stable values throughout the range of this unit.


The System is controlled through the touch screen panel or via a mouse connected to one of the USB ports on the front panel for more convenience. This analyser is already utilised for agricultural, livestock and landfill area monitoring, fuel-cell research, automobile NH3 emissions testing for DeNOx SCR and more. The Airwell+7 is CE approved.


Support Circuits for Air Quality Sensors


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27984pr@reply-direct.com XRD Technology Used for Air Quality Monitoring


Air quality is one of society’s major concerns for human health. There is a need for continuous monitoring of particulates especially in the submicron range. X-ray Diffraction (XRD) is one of the principal techniques for the analysis of powders and fundamental to identifying dangerous contaminents. A European project named Nanoair (REA FP7 222333) has been concluded successfully, its aim was to develop a mobile instrument for qualitative and quantitative analysis of breathable air.


Following Nanoair, another collaborative project named EnviroMonitor (REA FP7 286570 between Inel (France) the main coordinator, Comde, Briton, Camfil Farr and Ineris has been instigated to finish the engineering of the portable instrument. The goal of the project was to build a complete portable system that collects the dust, analyses it automatically to obtain particle sizes, carries out phase identification and quantification along with crystallites/ microstrains and finally stores all data and results online and the samples locally for reference. The first prototype is currently being tested.


Alphasense (UK), established supplier of electrochemical gas sensors, also offers support circuits for the new ranges of A4 and B4 four-electrode sensors, together with a 4-20mA


transmitter board for their NDIR CO2 infrared sensor.


Individual Sensor Boards (ISBs) have been built with lowest noise for the new B4 family of sensors, designed where best resolution at very low ppb levels is required in permanent fixed site networks. Requiring 3.5 to 6.4 VDC input, they provide buffered voltage output from both the working and auxiliary electrodes. Boards are pre-configured when you order for the type of sensor, with fixed zero and electronic gain. Each ISB supports one B4 sensor and requires less than 1.5 mA power.


The Analogue Front End (AFE) family of circuits is designed for use with the Alphasense A4 family of four-electrode gas sensors where space is critical, such as with mobile air quality monitors. Options include a 2-sensor AFE, 3-sensor AFE and 3-sensor +PID AFE. All AFE circuits include a low noise bandgap to provide 200 mV bias voltage for NO sensors. Requiring from 3.5 to 6.4 VDC supply, the 3-sensor board for example only needs 2 mA power. Each board includes a Pt1000, providing 1mV/K signal for your software temperature corrections. The AFE can measure both oxidising (CO, H2 NO2


S, NO, SO2 when ordering.


Alphasense NDIR transmitter boards offer both 4-20mA and USB outputs. Concentration ranges can be recalibrated via PC/USB port using the proprietary software.


Technical Data Sheets can be downloaded from Alphasense’s newly updated website.


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29152pr@reply-direct.com ) and reducing (O3 , ) gas sensors; AFE configuration is specified


Axetris AG Switzerland Phone: +41 41 662 76 76 E-mail:


www.axetris.com


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Mass Flow Modules 2023ad@reply-direct.com | axetris@axetris.com


High turn-down ratio High repeatability Low flow ranges Platinum based MEMS


Laser Gas Detectors | IR Sources 25/03/2014 08:25 www.envirotech-online.com IET March / April 2014


The dust sampling system pumps the ambient air and then filters to collect only the PM10, PM2,5 and lower size particles. It operates with a pumping flow of 2,3 m3/h. Data analysis is carried out by the Full Pattern Search-Match (FSPM) method. This automated software has been specially developed for this application based on the Rietveld analysis method for phase identification and quantification. The dust collection is performed continuously on a filter band for a 30 minute period of time. The filter band inserted in the system allows 2 weeks of continuous, onsite recording.


The results of the data analysis are compared to thresholds that had to be pre-defined and entered in the system to allow the release of an alarm if one or several thresholds are exceeded. A report is then generated gathering all the information and this is then stored locally.


Mass Flow Meters_A5_quer_Satzspiegel_Layout 1 29.05.12 16:09 Seite 1


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Mass Flow Meters and Controllers


Designed for OEM 28740pr@reply-direct.com ), ammonia (NH3 ), carbon


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