8 Air Monitoring


Electronic Diffusion Tube (EDT) Introduced by Independent Manufacturer Alphasense now provides a solution to some old problems:- Palmes-type diffusion tubes are commonly used for indicative measurement of nitrogen dioxide (NO2


) in


cities and towns for Local Air Quality Management. But sampling over several weeks gives only one average concentration for the entire sampling period and the result is reported after the measurement. Odours which were previously ignored by local industry and city councils are now headline problems.


There is a growing requirement to monitor odour plumes around landfills, waste water treatment plants, agricultural/poultry farms and industrial sites, but the cost of the necessary network of monitoring nodes is prohibitive. Hydrogen Sulfide (H2


S) or Ammonia (NH3 ) are the two most commonly measured gases for odour detection.


Alphasense introduces the Electronic Diffusion Tube (EDT): a single gas data logger with ppb resolution using the proven Alphasense A4 family of electrochemical ppb gas sensors.


Features include:- *the low cost EDT makes networks affordable, user- adjustable logging interval from one minute to four hours. Also records relative humidity and ambient temperature, eight months battery life from two Lithium AA cells, data is downloaded in seconds via Bluetooth to the Android smart phone app. Designed for waterproof to IP 67,mounting bracket connects easily to both walls and poles, gases include NO2


, NO2 +O3 , H2 S, NH3 and CO.


Sensor data sheets specify performance. Data analysis support available Applications include:- co-locating with Palmes-type diffusion tubes to record diurnal and weekly patterns and peaks, monitoring urban construction sites for compliance, especially for peak concentrations, ring-fencing odour sources for plume monitoring- daily downloads provide regular feedback, tracking ammonia plumes on poultry farms .


Detecting fugitive emissions from industrial sites for both leak detection and ensuring compliance. Low cost educational tool when teaching about air quality Shipped with the EDT is a mounting bracket, two AA lithium batteries and instructions for downloading the Android App, an IOS App will be available soon.


Ease of Use Meets Accuracy in Reporting


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Scalable Solution for Odour and Sulphur Monitoring vigiEnose from Chromatotec®


is an automated solution


dedicated to measurement of odour, tVOCs and speciation of Sulphur Compounds for industrial market (waste water treatment plants, landfills and refineries) at very low concentration levels.


With sensitivity lower than what the human nose can detect, this vigiEnose analyser is able to identify the origin and the level of odours with a chemical approach to quantify leakage around the site. It also allows to be alerted when emissions limits are exceeded and to determine deodourisation process efficiency, in order to optimise the performance of treatment facilities.


The BIOGAS 5000 is Geotech’s key product in the portable gas analyser sector which promises ease in calibration, configuration and collection of data. This will significantly support users in collecting data consistently and will contribute towards improved analysis and accurate reporting.


The analyser also provides the necessary checks to ensure that the digester process is running efficiently. This can be done by providing users with the insights needed to change gas levels for optimum performance.


With its robust high quality design, BIOGAS 5000 is fit for use in the most hazardous AD sites. Beyond measuring methane (CH4


), carbon dioxide (CO2 S). ) and oxygen (O2


optional gasses such as hydrogen (H2 hydrogen sulphide (H2


), ammonia (NH3


), it also measures ) and


Available with a built-in multilingual menu, the analyser can be programmed in English, French, German, Spanish, Portuguese, Italian and Chinese, and comes with a three-year warranty. Its quality has also been proven via the highest accreditation standards. These include ATEX, MCERTS, CSA and UKAS Calibration (ISO17025).


The main gas reading screen has been expertly created for users to view key information concisely and clearly in order to provide essential readings and comparisons. Beyond that, BIOGAS 5000 also boasts easy to use menu navigation, on board technical help, waterproof keypads and a waterproof USB port that enables users to download data directly to their computers. The analyser also comes with additional features such as the Optional Gas Analyser Manager Software (GAM) for ID set up and data download as well as Geotech’s ‘best in class’ infra-red bench technology.


With the BIOGAS 5000, users need not perform a self- certification of anemometer as the analyser validates its results. It also adheres to the strict PPC compliance and can be configured for each customer’s unique specification.


With the firmware update announced by Geotech recently, users of BIOGAS 5000 will also be able to upload multiple routes, which make it easier and quicker for users to keep track of their monitoring processes. Users can also enjoy extended functionality for alarms, which include flow, temperature and pressure as well as the ability to set targets for all of these settings.


The increased number of ID questions and characters enable users to program in more precise and detailed site information. Consequently, users can also set an ID up to take two relative pressure readings, one at the start of the read process and one at the end.


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This unique solution provides reliable results with automatic data validation with embedded calibration system to be confident on results provided.


Integrated to the vigiOdor web platform, it offers possibility to define the odour it its chemical impact on neighborhood, according to real climate conditions and nearby residents’ observations. Thanks to performances tests using sensory panel perception around the site, industrials can then anticipate nuisance and treat emissions before they affect nearby neighborhood.


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41547pr@reply-direct.com Portable Air Quality Data Display and Logging Meter


GrayWolf Sensing Solutions of Shelton, CT, USA, introduces the new AdvancedSense BE, a rugged, simple-?to-?use, multi- ?parameter environmental meter. This purpose-?built instrument is suited for both walk-?thru surveys and for trend-?logging over hours/days/weeks/months. Use it for Indoor Air Quality (IAQ), Industrial Hygiene (IH), Facility Management (FM), Heating Ventilation & Air Conditioning (HVAC) and other environmental applications. Displaying measurements, data capture, documenting of local conditions and report generation are all extremely efficient and reliable with this handheld monitor. GrayWolf’s broad, expanding range of DirectSense probes connect to the AdvancedSense BE.


Measure, display and log one or many parameters simultaneously including Total Volatile Organic Compounds (TVOCs), Differential Pressure, Air Velocity, %RH, Temperature and/or specific gases (such as Carbon Dioxide, Carbon Monoxide, Ozone, Nitrogen Dioxide,


Nitric Oxide, Ammonia, Hydrogen Sulfide, Sulfur Dioxide, Chlorine, Hydrogen, etc.).


The AdvancedSense BE (Basic Edition) is a streamlined version of our extremely feature-?rich AdvancedSense Pro. It maintains the same robust form factor, while connecting to most of the same time-?tested range of probes/sensors. There is a highly intuitive WolfSense tiles-?style menu along with drop down and smart icon menu bars. Voice or tone queues confirm actions, such as instantaneous snap-?shot logs (i.e. “Snap-?Log Recorded”). Also, an intuitive Notes interface, makes data documentation with text and audio easy and reliable. Simple, Versatile Logging: Data files automatically rename from “Location1” to “Location2”, or “Atrium Test 6” to “Atrium Test 7”, etc. Alternatively, use the AdvancedSense BE virtual keyboard to easily create highly descriptive data file names on-?site (e.g. “ABC Building/2nd Floor/Janitor Room”). Log instantaneously, as a “snapshot” or as a “trend log” over time. In the back- ?ground, WolfSafe™ is always recording any attached sensors, at 15 minute intervals (with time and date), into a “safe” file if the instrument is powered on for added insurance that data collection is performed.


Reliable, Efficient Annotation: Using the virtual keypad and the microphone, text and audio notes are easily attached to data files, on-?site, for highly effective, secure documentation. On-?board Educational Info: GrayWolf pre-?installs training videos for in-?situ viewing, and you can upload your own. Useful .pdfs such as the “US OSHA’s 3430 IAQ GUIDE” are also pre-?loaded, and you can import your own relevant documents for easy operator access in the field. Effortless Reporting: Once information has been collected in the field, WolfSense PC software (supplied as standard) enables easy download, analysis and report creation. Optional “Advanced Report Generator” software automates the entire reporting process.


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