T300U Ultra-Sensitive Gas Filter Correlation CO Analyser (Trace Level)

The Model T300U Ultra-Sensitive CO analyser has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. Using IR absorption with a Gas Filter Correlation Wheel, the T300U is designed to allow ultra-sensitive CO measurements while still meeting the requirements for use as a US EPA compliance analyser.

• Ranges: 0-100 ppb to 0-100 ppm, user selectable
• Lower Detectable Limit: < 20 ppb

T200U Ultra-Sensitive Chemiluminescence NO/NOy Analyser (Trace Level)

The Model T200U NOy analyser has been developed and refined specifically to address the challenges of NOy monitoring as required, for example, in the US NCore network. It uses the proven chemiluminescence principle and is coupled with a remote NOy converter via umbilical to allow measurements with a lower detectable limit of 50 ppt.

• Ranges: 0-5 ppb to 0-2,000 ppb, user selectable
• Lower Detectable Limit: <50 ppt

T200U Ultra-Sensitive Chemiluminescence NO/NO2/NOx Analyser (Trace Level)

The Model T200U Ultra-Sensitive NO/NO2/NOx analyser has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. It uses the proven chemiluminescence principle and is designed to allow ultra-sensitive measurements with a lower detectable limit of 50 ppt while still meeting the requirements for use as a US EPA compliance analyser.

• Ranges: 0-5 ppb to 0-2,000 ppb, user selectable
• Lower Detectable Limit: 50 ppt

T100U Ultra-Sensitive UV Fluorescence SO2 Analyser

The Model T100U Ultra-Sensitive SO2 analyser has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. It uses the proven UV fluorescence principle, and is designed to allow ultra-sensitive SO2 measurements while still meeting the requirements for use as a US EPA compliance analyser.

T700U Dynamic Dilution Calibrator

The Model T700U is a microprocessor based calibrator for precision gas analyzers. Using highly accurate mass flow controllers combined with compressed sources of standard gases, calibration standards are provided for multipoint span and zero checks using up to 4 gas sources.

In addition to the features of the Model T700, the Model T700U is designed for the demanding requirements of ultra-sensitive measurements.

T700 Dynamic Dilution Calibrator

The Model T700 is a microprocessor based calibrator for precision gas analysers. Using highly accurate mass flow controllers combined with compressed sources of standard gases, calibration standards are provided for multipoint span and zero calibrations using up to 4 gas sources.

• Generates precise calibration gases for SO2, H2S, NO, NO2, CO, O3, and others

T400 UV Absorption O3 Analyser

The Model T400 UV Absorption analyzer uses a system based on the Beer-Lambert law for measuring low ranges of ozone in ambient air.

• Ranges: 0-100 ppb to 0-10 ppm, user selectable
• Lower Detectable Limit: < 0.6 ppb

T300 Gas Filter Correlation CO Analyser

The Model T300 measures low ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law.

• Ranges: 0-1 ppm to 0-1000 ppm, user selectable
• Lower Detectable Limit: 0.04 ppm

T200 Chemiluminescence NO/NO2/NOx Analyser

The Model T200 NO/NO2/NOx analyser uses the proven chemiluminescence detection principle, coupled with state-ofthe- art electronics to allow accurate and dependable low level measurements for use as an ambient analyser or dilution CEMS monitor.

• Ranges: 0-50 ppb to 0-20 ppm, user selectable
• Lower Detectable Limit: 0.4 ppb

T100 UV Fluorescence SO2 Analyzer

The Model T100 uses the proven UV fluorescence principle, coupled with a state of the art user interface to provide easy, accurate, and dependable measurements of low level S02.

• Ranges: 0-50 ppb to 0-20 ppm, user selectable
• Lower Detectable Limit: 0.4 ppb

Enviro Technology announces the availability of the new T series gas analysers

World class supplier and leading UK exporter specialising in air pollution monitoring systems Enviro Technology Services Plc is pleased to announce the availability of the latest gas analysers on the market from Teledyne-API.

The T-Series models (T100, T200, T300 and T400) monitor levels of SO₂, NOx, CO and O₃ respectively and feature amongst other things a large, multi-colour touch-screen display/GUI.

For the T200 NOx Analyser, which is expected to be a best-seller, the levels of each gas (NO, NO₂ and NOx) can be seen on the screen simultaneously.

Each model includes LAN/Ethernet local area network capability as standard and are fitted with two front panel mounted USB ports for use with data sticks, computer mouse or other USB devices.

For the first time, an 8 x channel analogue input module is available as an option which can be used for logging data from other sensors such as met sensors etc.

Duncan Mounsor from Enviro Technology said: “These latest gas analysers are the most versatile and capable on the market. Teledyne has built upon the success of their previous E-Series models and created a range that is more technologically advanced, easier to use and has greater flexibility.

We are confident that the T series will be a popular choice for companies or individuals who are looking for the latest air quality monitoring equipment.”

The T series analysers have fold down front and rear panels which create easy maintenance access and filters can be changed quickly without delay.

The analysers can be operated remotely; they have MCERTs approval and are available now from Enviro Technology. For more information about please visit www.et.co.uk

Ends 07 September 2010

For further media information or images, please contact Rebecca Bushell at Trailblazer PR on 01453 887 777 or 07980 601870. Email rebecca.bushell@trailblazerpr.com

The analysers are being used for the Institute’s field campaigns, which look at the ¹³C isotope content of CO₂ which leaves the soil surface. By measuring  the ¹³C content researchers can tell more about where the CO₂ comes from, whether it is new carbon respired by plant rootsor older carbon associated with the turnover of soil organic matter – this distinction can have important implications for the global carbon cycle.

The use of these analysers has revolutionised the way the Institute has collected, stored and analysed data during these campaigns.  Dr Andy Midwood from the Macaulay Institute explains:
“During previous campaigns we collected literally hundreds of gas samples in small vials then shipped them back to Aberdeen for analysis. On more than one occasion there have been problems and we lost valuable information due to leakages or faults.

Now with the Picarro’s we analyse as we go. We can see how the data looks, make changes to our measurement criteria and generally make sure the experiments go as planned. This is only possible because the Picarro is so portable, in terms of size, power consumption and ease of operation.”

Duncan Mounsor from Enviro Technology said: “We are delighted that the Picarro analysers have been so well received by the Macaulay Institute.

In recent years we have expanded our range of quality specialist gaseous and particulate systems for scientific and research applications. We have noticed a need for more high tech, as well as portable equipment as it is often transported around the world.”

For more information about Enviro Technology, please visit www.et.co.uk.

Ends 26 August 2010

For further media information, please contact Rebecca Bushell at Trailblazer PR on 01453 887 777 or 07980 601870. Email rebecca.bushell@trailblazerpr.com.

The seminars will be held at Weetwood Hall, Leeds on 30^th of September and Celtic Manor, Newport on 14^th October.

Each seminar will be packed with ideas through practical sessions and case studies to guide attendees towards best practice for industrial air emissions.

Duncan Mounsor from Enviro Technology said: “The seminars are ideal for Process Operators who are responsible for specifying and maintaining equipment to control industrial air emissions and meeting site environmental obligations.

The content of the seminars will range from the selection, installation and maintenance of CEMS, to advice on choosing the right technology for particulate emission monitoring and an overview of ambient air quality monitoring for industry. The seminars are sure to be informative and insightful.”

A buffet lunch is included and attendees will be given a comprehensive seminar manual and USB flash drive containing all presentations and useful documentation.

For further information about the seminars or to book a place please contact Duncan Mounsor via email: duncan.mounsor@et.co.uk.

Ends 16 August 2010

For further media information, please contact Rebecca Bushell at Trailblazer PR on 01453 887 777 or 07980 601870. Email rebecca.bushell@trailblazerpr.com

Greywolf DirectSense IAQ Monitor

Enviro Technology Services Plc, which is a world class supplier and UK exporter specialising in environmental monitoring instrumentation for air quality monitoring and industrial emissions applications is adding to its services by offering indoor air quality monitoring.

The company is the sole UK distributor for the leading indoor air quality (IAQ) monitoring products DirectSense® from GrayWolf.

The DirectSense® monitors are state-of-the-art and allow the user to undertake IAQ surveys with ease and comfort. The monitors come in two parts, a probe and pocket PC. The probe is designed to be used for walk through surveys and or can be supplied with a tripod and left in-situ for longer term monitoring which will look at trends in IAQ.

The pocket PC generates the survey information at the touch of a button and can connect to a computer, laptop or notebook using XP/Vista/WIN7. However, the kit can also be supplied without the pocket PC, but with software suitable for use with a customer’s own laptop.

Jamie McNee, Sales Engineer at Enviro Technology, said: “We really believe that the technology from Graywolf is a lot more advanced than the current IAQ monitoring equipment that is available and we are looking forward to demonstrating it to more and more customers.

Although the UK has been carrying out IAQ monitoring in offices for many years other places such as schools, universities and public places seem to unaware that poor IAQ levels can have health implications despite these being well documented. We believe there is a great market for IAQ and know that DirectSense® delivers the right option for proactive IAQ management.”

The key features of the monitors are as follows:

• Simultaneous measurement of up to five (5) key IAQ indicators; VOCs, CO2 (dilution ventilation), CO, %RH, °C/°F in one probe
• Manual “snapshot” or automatic “trend” datalogging available
• Store enhanced survey information on-site; data and text, drawings, audio notes, photos etc
• Allows logged data to be down-loaded to WolfSense® PC software for analysis
• Optional “Advanced Report Generator: IAQ Edition” software makes comprehensive IAQ report generation easy and efficient
• Minimum training required; if you know Windows, you know how to navigate WolfSense®
• Easily customize/optimize the user interface for your specific application
• IAQ educational materials, IAQ & sensor tips, government & industry guidelines, health effects, typical background levels and more

Customers can also hire as well as purchase the equipment from Enviro Technology and it will also recommend companies that will carry out IAQ surveys for them using the Graywolf product.
Further information on Enviro Technology is available at www.et.co.uk.

Ends 29 July 2010

For further media information or images, please contact Rebecca Bushell at Trailblazer PR on 01453 887 777 or 07980 601870. Email rebecca.bushell@trailblazerpr.com

Comments:

All ET engineers are friendly and professional and do a great job once at the site.
I would recommend at a technical level the equipment and staff that ET provide.

Amarpal Mahal, Sandwell MBC

ET Service Engineer

A bold and somewhat arrogant statement, some might say?

But when it comes to the providing the highest levels of service and support for air quality monitoring equipment, ET really does deliver, time and time again and does not just pay lip-service to the phrase “customer satisfaction”.

Here at ET, customer support and customer satisfaction really is what we are all about and what drives us and is what has driven us for almost 30 years.

We are at the end of the day primarily first and foremost a service business. Sure we sell air quality monitoring equipment and CEMS, but it is “service” and to be more accurate, providing the very best service, that underpins our business, existence and, ultimately our success and longevity.

So how do we “know” that we are the best?

Size of service team: 22 of our 43 employees are directly involved in our Customer Support team including 15 x highly trained and experienced service engineers and technicians.

Regional service bases: Our engineers are based throughout the UK in Gloucestershire, Kent, Essex, Staffordshire, Bedfordshire and Northumbria.

Monitoring & KPI’s: ET is a “top-tier” ISO 9001 quality assured company, certified by BSI.
ISO 9001 is based upon “continuous improvement” and we conduct on-going monitoring and report on a range of core “key performance indicators” (KPI’s).

Customer Satisfaction: An organisation only knows if it is satisfying its customers by regularly asking for feedback, listening to feedback and turning this feedback into positive actions. We conduct customer satisfaction surveys after every service visit, go to Services section of our website www.et.co.uk to see what our customers are saying about us.

Experience and length of service: Our sales and service teams are vastly experienced, many have been with us for over 15 years and our average length of service per employee is 9 years.
We know what we are talking about and more importantly thoroughly understand the equipment we sell and service.

Technical Support Helpline: We’re the only company in our industry to operate a dedicated technical support helpline. When you need support or advise, we are always at the other end of the phone or email, from 0900-1700 Monday to Friday, week in, week out.

So what do our customers think about us?

“Excellent service a credit to the industry.”
Paul Willson, BOC Special Gases Morden (London)

“In our experience, ET have always offered good, reliable and friendly service.”
Ben Rose, Manchester City Council

“Marcus, Thanks very much for the report and for your assistance down at Pembroke.
For the others reading this, I have to highlight and compliment his competence and his
pleasant manner. Not always experienced with service guys these days.
And hope that I’ve embarrassed him by saying this!
Best Regards”
Phillip R. Jones, AQ Data Services

“Russell Culvers’ (ETS Service Engineer) work was excellent as per normal.”
Patrick Pisani, GDF Suez

With outstanding endorsements like this and the largest team of experienced engineers in the industry, it’s clear to see that Enviro Technology is the number one choice when your service contract is up for renewal.

Getting in touch
Whether you are an existing customer, or looking to make the break from your existing service provider, we would be delighted to talk to you:

Call Nigel Macefield or Florence Trehet on:
01453 733200 or email customersupport@et.co.uk

A study taken over 16 years by German researchers, has shown that those exposed to higher levels of traffic related air pollutants over a period of time are more likely to develop type 2 diabetes.

1,175 middle-aged German women living in urban and rural areas were closely studied and found that those living near major roadways were twice as likely to develop type 2 diabetes.

The researchers pinpointed nitrogen dioxide (NO2) and the soot in ambient fine particulate matter (PM) – two components of traffic pollution – as primary culprits.

The women who were exposed to higher levels of traffic-related pollution at the beginning of the study were more likely to have developed diabetes at follow-up. In fact, the risk of diabetes increased by 15-42 percent for every 25 percent increase in traffic exposure.

The study is one of the first to follow participants over many years in order to look at whether traffic-related air pollution might be linked to the risk of developing diabetes later in life. It agrees with a handful of prior human and animal studies that have suggested a link between the two.

Although this study was conducted on women, the German researchers who authored note that they would expect no significant difference in results for a similar study conducted on men.

This is just one more in the long list of traffic pollution related diseases such as asthma and chronic bronchitis.

Since 1983 ET has been providing national and local government with Air Quality Analysers & systems. We believe that cutting down on emissions has never been so important.

Opsis AQM System at Tower Bridge

Due to the well-proven evidence that correlates high PM levels with mortality rates, the answer is probably no, but NO_2, and more specifically “direct NO₂” seems to be a real hot potato at the moment.

If you have been to any of the recent high profile IAQM and EPUK conferences over the last few months, chances are you will have sat through one of the many “direct NO₂” presentations that are currently doing the rounds. These have been delivered by AQ luminaries such as Dr David Carslaw (ERG Kings College) and Dr James Tate (ITS Leeds University) to name but a few.

So what is all the fuss about?

Well, as we all know, it is widely accepted that NOx levels in urban areas have been falling steadily over the last 10 years. So along with drastic reductions in CO levels as well over the same period, this surely bodes well for local air quality management, right?

Well, not exactly.

Recent studies and data collected from several urban and kerbside AURN stations show, that although overall NOx levels are down, NO₂ levels are worryingly on the up at certain “hot-spots” across the UK.

Leading academics and consultants, now think they know why, and it would appear it is primarily down to “direct NO₂” tailpipe emissions.

Sadly, our love affair with the motor car is still as healthy as ever and incentives to kick-start some life into the struggling motor industry, like the UK’s highly successful “scrappage scheme” have in fact had a detrimental effect in our on-going battle to improve air quality in some areas. So too has been the “dieselisation” of the vehicle fleet over the last 10 years (i.e. PM₁₀).

Why is that then?

Well, the motor manufacturing industry is targeted, through the Euro engine classification system (i.e. Euro IV, Euro V and now Euro VI) to reducing amongst others, NOx, PM and CO₂ emissions for new vehicles. NO₂ has traditionally only been a very small part of the overall NOx emission, and clean engine technology has been refined, developed and rolled out now to ensure our overall NOx emissions are within the EU Euro specs. However, approximately 40% of vehicles sold these days are diesels and as we all know, diesel vehicles produce much higher levels of those “killer” PM₁₀ particles then petrol engine vehicles and so the motor manufacturers have had to come up with ways in keeping PM₁₀ levels in check too.

So how do they do that and what has it got to do with NO₂?

Well, we have all heard about catalytic converters and particulate traps etc. The latter mainly work by “burning” the particles before they come out of the tailpipe. It is a thermal oxidisation process.

When you burn air, the nitrogen compounds get converted to NO₂ and this, is the heart of the problem.

In a major drive to help reduce CO₂ emissions, diesel car uptake has never been so high. This is fuelled (no pun intended) by the HMRC CO₂ scale and Benefit in Kind taxation system for company car drivers. Essentially, you stand to pay far less tax if your company car is of the diesel type.

And it is not just cars, the London Low Emission Zone has forced taxi and HGV owners and operators to comply with new rules that have on one hand, ensured that our buses, HGV’s and taxi’s are cleaner (in terms of CO₂ and particulates) but they are all adding to the growing direct NO₂ problem.

So in a nutshell, in terms of NO₂ at least, recent studies have demonstrated that some of the new cars that have come into service during the scrappage scheme (over 400,000 vehicles), many emit far higher levels of NO₂ than the 10 years + old ones that they have replaced!

Sure, the NOx, PM10, HC emissions are demonstrably lower, but not necessarily NO₂.

This conundrum is causing a major headache for Defra and the Air Quality Helpdesk, who at this moment in time, do not know how to advise worried Local Authorities who ask, what can we do about this?

One thing that is for sure, is that it is very complicated and extremely difficult to model future NO₂ levels. I recently heard that one leading UK University ran a 27-dimensional model on its biggest, fastest super-computer and it took a few days to do some number crunching.

And then there are the model uncertainties. Getting a result that it within +/- 20% accuracy I’m told is very good indeed. And what do we validate the models with?

The answer to that is that we use diffusion tubes and Chemiluminescent NOx analysers.

But that is OK isn’t it?

Well that depends on your point of view…

VHS was OK before DVD came along, cathode ray TV’s were OK before Plasma/LED TV’s came along, the slide rule was probably OK before the pocket calculator came along (but I’m too young to remember those).

Chemiluminescent NOx analysers are OK, and to many, they are the “Gold Standard” for NOx monitoring, and diffusion tubes? Well that is a whole other debate.

Now the focus is squarely on NO₂, and chemiluminescent NOx analysers have one fundamental problem and that is they don’t actually measure NO₂ at all, instead they convert NO₂ back to NO using a high temperature molybdenum converter at approximately 315 ^OC. The sample gas is actually switched either through the moly converter or directly into the reaction cell thereby giving us the NOx – NO = NO₂ measurement equation.

In theory this is great, but it is dependent on certain assumptions and critical factors. The first of which is that moly converter is efficient. In a perfect world, this efficiency should be 100% but in practice it may be closer to 95% on a well maintained, modern NOx analyser and could be far less on older analysers or those that are not serviced frequently or maintained and calibrated adequately.

The second consideration is measurement uncertainty. Again, in an ideal world, every part of the analyser, calibration system and sampling system should be studied and all the “uncertainties” added up to give an overall expanded uncertainty which we should then use as a measure of quality assurance.

Thirdly moly converters can also convert other nitrogen compounds into NO, not just the NO₂. The catalytic technique is not 100% selective to NO₂ only, so any other oxides that are inadvertently converted to NO will be “calculated” as NO₂ even if they are not really.

Chemiluminescent NOx analysers, like all what we call “point” analysers are a hybrid pneumatic/electronic box of tricks that sample a relatively small volume of sample air (i.e. 800cc/min) using sample lines (of varying lengths and conditions), pumps (in various states of operational condition) and solenoid valves, flow restrictors, critical orifices, sample inlet filters, converters, catalysts, scrubbers and a myriad of other things.

All of these components have a bearing on measurement uncertainty and what comes in at the end of the sample tube, will never get to the detection part of the analyser 100% intact. There are losses, chemical reactions and interferences all along the way.

So how sure are you now that the 25 ug/m3 NO₂ that your NOx analyser is displaying really is 25?

OK, so what alternatives are there to the good old Chemiluminescent NOx box?

Surprisingly few is the answer to that, and even fewer that “really” work for low-level ambient air quality monitoring applications.

However where all this is leading us to is something called UV DOAS!

UV what??

UV DOAS, or to give it its full name Ultra-Violet Differential Optical Absorption Spectroscopy.

Opsis Long Path Air Quality Monitoring Solution

Firstly, UV-DOAS is a non-contact, non-pneumatic optical system that measures NO₂ “directly” and many other gases (such as O₃ SO₂ and BTEX) in real-time over for example a 500m open-path in ambient air.

Using three main components, an emitter, a receiver and a small, compact DOAS analyser (a computer controlled UV spectrometer) DOAS detects and measures target gases by analysing their unique spectral absorption characteristics (think of it as a sophisticated gas fingerprinting system).

Each gas has its own unique “fingerprint” and DOAS is able to look at the ones of interest and these only. It not only computes the gas concentration but also the standard deviation of each measurement, which is a major quality assurance improvement over “standard” analysers that pretty much expect you to “gauge” the overall quality after you have worked out all those measurement uncertainties touched on briefly above.

DOAS is fast, inherently accurate, requires no sampling system, the minimum of calibration (six-monthly is more than adequate) and more importantly is far more representative of local air quality levels than for instance, the data generated from a single NOx analyser, after all, it is monitoring a much larger sample (several hundered meters of air) as opposed to perhaps 800cc/min from a single inlet head.

It has also got the right credentials as it internationally approved and validated and in the UK has an MCERTS certificate for NO₂ SO₂ O₃ and Benzene.

Gas molecules are as we know, very small. The NO₂ molecules that we are trying to measure with our chemiluminescent NOx analysers when mixed up in ambient air are almost mind-bogglingly well dispersed and distributed. Just think about the nomenclature that we use, for instance “parts per billion”. Think about it, this means one NO₂ molecule in one billion parts of air.

Sure, if we find a few of the NO₂ molecules in ambient air, our chemiluminescent analysers are sensitive enough to measure them (after being converted back to NO first of course) but what if those molecules evade capture through our relatively puny 800 cc/min sample lines?

Well they won’t get measured.

Molecules will, and do, do their own thing. They are here one second, somewhere else the next, (the realm of the quantum) and if they are 1,5,10 or 100m from your NOx analyser sample inlet, the fact is, they won’t get measured. To get measured, they need to be pretty much floating about right by your sample inlet system, and then they might even slip away if the wind changes!

But imagine a beam of light running alongside the busy road we want to take our NOx measurements, let’s say 300m long for arguments sake. We know the NO₂ levels are high in this area from our modelling or diffusion tubes surveys. Just think of all those NO₂ molecules that will be potentially present in that 300m section of horizontal air mass we are shining our light through. Chances are we are going to do a far better job of finding them and measuring them in a far more representative manner than from our single chemiluminescent NOx analyser.

Chances are however, that the real concentrations might actually be higher (or lower) than we expect as we now have a system that is far more adept and representative than before.

However, to coin another well used phrase “to measure is to really know” and now that the UK is facing all manner of well reported problems with cities such as London reported by some quarters to be the most polluted city in Europe, isn’t it time that we took a fresh look at alternative monitoring technologies?

After all, who still uses VHS, Cathode Ray TV’s and slide rules..

To find out more, call ET on 01453 733200 and ask to talk to someone about Opsis open-path.

Alternatively email sales@et.co.uk and visit our website www.et.co.uk

Duncan Mounsor, Sales & Marketing Director, Enviro Technology Services Plc.

ENDS

Opsis AQM System at Tower Bridge

Due to the well-proven evidence that correlates high PM levels with mortality rates, the answer is probably no, but NO_2, and more specifically “direct NO₂” seems to be a real hot potato at the moment.

If you have been to any of the recent high profile IAQM and EPUK conferences over the last few months, chances are you will have sat through one of the many “direct NO₂” presentations that are currently doing the rounds. These have been delivered by AQ luminaries such as Dr David Carslaw (ERG Kings College) and Dr James Tate (ITS Leeds University) to name but a few.

So what is all the fuss about?

Well, as we all know, it is widely accepted that NOx levels in urban areas have been falling steadily over the last 10 years. So along with drastic reductions in CO levels as well over the same period, this surely bodes well for local air quality management, right?

Well, not exactly.

Recent studies and data collected from several urban and kerbside AURN stations show, that although overall NOx levels are down, NO₂ levels are worryingly on the up at certain “hot-spots” across the UK.

Leading academics and consultants, now think they know why, and it would appear it is primarily down to “direct NO₂” tailpipe emissions.

Sadly, our love affair with the motor car is still as healthy as ever and incentives to kick-start some life into the struggling motor industry, like the UK’s highly successful “scrappage scheme” have in fact had a detrimental effect in our on-going battle to improve air quality in some areas. So too has been the “dieselisation” of the vehicle fleet over the last 10 years (i.e. PM₁₀).

Why is that then?

Well, the motor manufacturing industry is targeted, through the Euro engine classification system (i.e. Euro IV, Euro V and now Euro VI) to reducing amongst others, NOx, PM and CO₂ emissions for new vehicles. NO₂ has traditionally only been a very small part of the overall NOx emission, and clean engine technology has been refined, developed and rolled out now to ensure our overall NOx emissions are within the EU Euro specs. However, approximately 40% of vehicles sold these days are diesels and as we all know, diesel vehicles produce much higher levels of those “killer” PM₁₀ particles then petrol engine vehicles and so the motor manufacturers have had to come up with ways in keeping PM₁₀ levels in check too.

So how do they do that and what has it got to do with NO₂?

Well, we have all heard about catalytic converters and particulate traps etc. The latter mainly work by “burning” the particles before they come out of the tailpipe. It is a thermal oxidisation process.

When you burn air, the nitrogen compounds get converted to NO₂ and this, is the heart of the problem.

In a major drive to help reduce CO₂ emissions, diesel car uptake has never been so high. This is fuelled (no pun intended) by the HMRC CO₂ scale and Benefit in Kind taxation system for company car drivers. Essentially, you stand to pay far less tax if your company car is of the diesel type.

And it is not just cars, the London Low Emission Zone has forced taxi and HGV owners and operators to comply with new rules that have on one hand, ensured that our buses, HGV’s and taxi’s are cleaner (in terms of CO₂ and particulates) but they are all adding to the growing direct NO₂ problem.

So in a nutshell, in terms of NO₂ at least, recent studies have demonstrated that some of the new cars that have come into service during the scrappage scheme (over 400,000 vehicles), many emit far higher levels of NO₂ than the 10 years + old ones that they have replaced!

Sure, the NOx, PM10, HC emissions are demonstrably lower, but not necessarily NO₂.

This conundrum is causing a major headache for Defra and the Air Quality Helpdesk, who at this moment in time, do not know how to advise worried Local Authorities who ask, what can we do about this?

One thing that is for sure, is that it is very complicated and extremely difficult to model future NO₂ levels. I recently heard that one leading UK University ran a 27-dimensional model on its biggest, fastest super-computer and it took a few days to do some number crunching.

And then there are the model uncertainties. Getting a result that is within +/- 20% accuracy I’m told is very good indeed. And what do we validate the models with?

The answer to that is that we use diffusion tubes and Chemiluminescent NOx analysers.

But that is OK isn’t it?

Well that depends on your point of view…

VHS was OK before DVD came along, cathode ray TV’s were OK before Plasma/LED TV’s came along, the slide rule was probably OK before the pocket calculator came along (but I’m too young to remember those).

Chemiluminescent NOx analysers are OK, and to many, they are the “Gold Standard” for NOx monitoring, and diffusion tubes? Well that is a whole other debate.

Now the focus is squarely on NO₂, and chemiluminescent NOx analysers have one fundamental problem and that is they don’t actually measure NO₂ at all, instead they convert NO₂ back to NO using a high temperature molybdenum converter at approximately 315 ^OC. The sample gas is actually switched either through the moly converter or directly into the reaction cell thereby giving us the NOx – NO = NO₂ measurement equation.

In theory this is great, but it is dependent on certain assumptions and critical factors. The first of which is that moly converter is efficient. In a perfect world, this efficiency should be 100% but in practice it may be closer to 95% on a well maintained, modern NOx analyser and could be far less on older analysers or those that are not serviced frequently or maintained and calibrated adequately.

The second consideration is measurement uncertainty. Again, in an ideal world, every part of the analyser, calibration system and sampling system should be studied and all the “uncertainties” added up to give an overall expanded uncertainty which we should then use as a measure of quality assurance.

Thirdly moly converters can also convert other nitrogen compounds into NO, not just the NO₂. The catalytic technique is not 100% selective to NO₂ only, so any other oxides that are inadvertently converted to NO will be “calculated” as NO₂ even if they are not really.

Chemiluminescent NOx analysers, like all what we call “point” analysers are a hybrid pneumatic/electronic box of tricks that sample a relatively small volume of sample air (i.e. 800cc/min) using sample lines (of varying lengths and conditions), pumps (in various states of operational condition) and solenoid valves, flow restrictors, critical orifices, sample inlet filters, converters, catalysts, scrubbers and a myriad of other things.

All of these components have a bearing on measurement uncertainty and what comes in at the end of the sample tube, will never get to the detection part of the analyser 100% intact. There are losses, chemical reactions and interferences all along the way.

So how sure are you now that the 25 ug/m3 NO₂ that your NOx analyser is displaying really is 25?

OK, so what alternatives are there to the good old Chemiluminescent NOx box?

Surprisingly few is the answer to that, and even fewer that “really” work for low-level ambient air quality monitoring applications.

However where all this is leading us to is something called UV DOAS!

UV what??

UV DOAS, or to give it its full name Ultra-Violet Differential Optical Absorption Spectroscopy.

Firstly, UV-DOAS is a non-contact, non-pneumatic optical system that measures NO₂ “directly” and many other gases (such as O₃ SO₂ and BTEX) in real-time over for example a 500m open-path in ambient air.

Using three main components, an emitter, a receiver and a small, compact DOAS analyser (a computer controlled UV spectrometer) DOAS detects and measures target gases by analysing their unique spectral absorption characteristics (think of it as a sophisticated gas fingerprinting system).

Each gas has its own unique “fingerprint” and DOAS is able to look at the ones of interest and these only. It not only computes the gas concentration but also the standard deviation of each measurement, which is a major quality assurance improvement over “standard” analysers that pretty much expect you to “gauge” the overall quality after you have worked out all those measurement uncertainties touched on briefly above.

DOAS is fast, inherently accurate, requires no sampling system, the minimum of calibration (six-monthly is more than adequate) and more importantly is far more representative of local air quality levels than for instance, the data generated from a single NOx analyser, after all, it is monitoring a much larger sample (several hundered meters of air) as opposed to perhaps 800cc/min from a single inlet head.

It has also got the right credentials as it internationally approved and validated and in the UK has an MCERTS certificate for NO₂ SO₂ O₃ and Benzene.

Gas molecules are as we know, very small. The NO₂ molecules that we are trying to measure with our chemiluminescent NOx analysers when mixed up in ambient air are almost mind-bogglingly well dispersed and distributed. Just think about the nomenclature that we use, for instance “parts per billion”. Think about it, this means one NO₂ molecule in one billion parts of air.

Sure, if we find a few of the NO₂ molecules in ambient air, our chemiluminescent analysers are sensitive enough to measure them (after being converted back to NO first of course) but what if those molecules evade capture through our relatively puny 800 cc/min sample lines?

Well they won’t get measured.

Molecules will, and do, do their own thing. They are here one second, somewhere else the next, (the realm of the quantum) and if they are 1,5,10 or 100m from your NOx analyser sample inlet, the fact is, they won’t get measured. To get measured, they need to be pretty much floating about right by your sample inlet system, and then they might even slip away if the wind changes!

But imagine a beam of light running alongside the busy road we want to take our NOx measurements from, let’s say 300m long for arguments sake. We know the NO₂ levels are high in this area from our modelling or diffusion tubes surveys. Just think of all those NO₂ molecules that will be potentially present in that 300m section of horizontal air mass we are shining our light through. Chances are we are going to do a far better job of finding them and measuring them in a far more representative manner than from our single chemiluminescent NOx analyser.

Chances are however, that the real concentrations might actually be higher (or lower) than we expect as we now have a system that is far more adept and representative than before.

However, to coin another well used phrase “to measure is to really know” and now that the UK is facing all manner of well reported problems with cities such as London reported by some quarters to be the most polluted city in Europe, isn’t it time that we took a fresh look at alternative monitoring technologies?

After all, who still uses VHS, Cathode Ray TV’s and slide rules..

To find out more, call ET on 01453 733200 and ask to talk to someone about Opsis open-path.

Alternatively email sales@et.co.uk and visit our website www.et.co.uk

Duncan Mounsor, Sales & Marketing Director, Enviro Technology Services Plc.

ENDS

Paul Wilson, BOC Special  Gases Morden (London)

Patrick Pisani
GDF Suez

Ben Rose
Manchester City Council

Best regards
Phillip R.Jones
AQ Data Services

Digitel HVS Automat DHA-80

ET is pleased to announce that on 1^st August 2010 it will become the primary exclusive distributor for the Digitel range of advanced high volume samplers in the UK & Ireland.

The move comes after discussions and meetings between ET & Digitel AG (Switzerland) resulting in a “win-win” situation for both companies.

ET has had a great deal of success selling High Volume Samplers in the UK & Ireland over the years, primarily into the power plant and nuclear industries.

Digitel have earned a well deserved reputation for designing and building perhaps the most advanced range of High Volume Samplers in the world and this can be demonstrated in the UK by the fact that the Digitel DHA-80 Automatic sampler has become the “UK Standard” on the Defra PAH Network, with over 40 units in operation.

ET’s Sales & Marketing Director, Duncan Mounsor, is both pleased and excited to be working with Digitel in the UK.

Says Duncan “there is no doubt that Digitel have the most advanced and highest quality High Volume Samplers in the world. They have in fact revolutionised the Hi-Vol as we know it and have turned what was once a common-or-garden non-sophisticated blower/filter box into a high-tech instrument fit for the 21^st Century”

Duncan continues “the Digitel products are fantastically well engineered, built to last and incorporate many innovative features which bring great benefits to users. In addition to great products, ET will now be able to offer great service for existing and new Digitel clients in the UK via its large and experienced team of service engineers and technicians”.

Regula Muther, Digitel’s (Vice-Chairman) says “We are very happy with this new collaboration and we are expecting huge benefits for our customers. ET is a well established and stable enterprise. Together with their high service quality this was the most important criteria for us for collaboration. We want to give our 40 years of experience in producing and developing environmental instruments and our Swiss Quality to the end-users. This is only possible with a strong partner, like ET, who can offer service on a very high quality level with an experienced team.”

For further information, please contact:

Duncan Mounsor, Enviro Technology : 01453 733232 or email sales@et.co.uk

HVS Blower DS-02

Controlled High Volume blower for autonomous and continuous measurements.

The DIGITEL blower DS-02 is a part of a system to sample dust and aerosol particles for later assessment and analysis. The sampler operation range in standard execution is 100 to 1000 litres per minute (6 to 60 cubic metres per hour). The system’s usual designation is „High Volume Sampler“.

Air-borne-dust parts in the sampled air are separated onto 150 mm diameter filters. The flown filter diameter is 140 mm. Subsequent gravimetric and analytical analysis could be conducted depending upon the pollutants of interest. Filter material and structure selection (deep filters, porous filters, glass fibres, silica fibres, pulp, Teflon, porosity….) will depend on the analysis purpose. The filter conditioning is important in order to achieve reproducible results.A flow meter controls the selected air flow rate. This value should be calibrated first at the beginning of a measurement session, using a gasmeter or a secondary standard, e.g. an additional flow meter. During air sampling, the pump flow rate is dynamically controlled, so that this value is kept at good reproducibility and at long-term stability despite the deposited filter flow resistance and the sampled ambient air pressure / temperature variation.

An integrated microprocessor unit controls filter changes at the exact preset time and collects all relevant data and events. Hereby the air quantity flowing through the filter is defined with high accuracy.

For more information and technical data see http://www.digitel-ag.com/Frameset_engl.htm

HVS single filter unit DH-77

High Volume Sampler (HVS) Single filter unit for autonomous and continuous measurements.

The Digitel High Volume Sampler DH-77 is a system to sample dust and aerosol particles for later assessment and analysis. The sampler operation range in standard execution is 100 to 1000 litres per minute (6 to 60 cubic metres per hour). The system’s usual designation is „High Volume Sampler“.

Air-borne-dust parts in the sampled air are separated onto 150 mm diameter filters. The flown filter diameter is 140 mm. Subsequent gravimetric and analytical analysis could be conducted then depending upon the pollutants of interest. Filter material and structure selection (deep filters, porous filters, glass fibres, silica fibres, pulp, Teflon, porosity….) will depend on the analysis purpose. The filter conditioning is important in order to achieve reproducible results.

For more information and technical data see http://www.digitel-ag.com/Frameset_engl.htm

Digitel HVS Automat DHA-80

High Volume Sampler (HVS) for autonomous, continuous measurements.

DIGITEL DHA-80 is a system for sampling dust and aerosol particles for later assessment and analysis. The sampler operation range in standard execution is from 100 – 1000 l/min (6 – 60 m³/h). The system is usually called „High Volume Sampler“.

Various models of samplers are available from different applications. Generally, they differ by the number of filters processed and by the type of logging failure indication and status messages as well as by the type of remote control via various interface protocols.

Air-borne dust particles in the sampled air are separated on to Ø 150 mm filters. The flown filter diameter is 140 mm. Sequent gravimetric and analytical analysis could be conducted depending upon the pollutants of interest. Filter material and structure selection (deep filters, porous filters glass fibres, silica fibres, pulp, Teflon, porosity…) will depend on the analysis purpose. The filter conditioning is important in order to achieve reproducible results.

DHA-80 has a container of 15 filters stretched in filter holders. They are changed automatically to the flow position at the pre-set time.

2750 Methyl Mercury Distillation System

Enviro Technology introduces Tekrans new Model 2750 Methyl Mercury Distillation System.

The Tekran  2750  is designed to be compact and modular, reducing the required bench top footprint. The Tekran 2750 has the following unique features:

• Distillation system offers 30-position preparation, fully compliant with EPA method 1630
• Robust gas flow control system significantly reduces operating cost
• Actively cooled water bath eliminates the need for ice, avoiding the associated inconveniences
• Precision PID temperature controlled aluminium heating block
• Programmable timer turns of the heater, chiller and purge gas supply at completion of distillation cycle
• Heating block lid prevents sample reflux in distillation vials
• Modular design provides flexibility; gas distribution panel can be wall mounted

For futher information contact Enviro Technology at info@et.co.uk or ring us on01453 733200

For more information about our full range of products and services see www.et.co.uk

The all-inclusive service contract incorporates a 48-hour response to breakdown, six-monthly services for each site, replacement of expendable and consumable parts as well as all spare parts. Air conditioning equipment within monitor housing is covered in addition to the main active components.

Equipment in operation across the network includes NOx, PM₁₀, O₃ and SO₂ analysers. The suburban station in Folkestone incorporates a full suite of Teledyne API analysers.

All of the analysers support remote interrogation, enabling Enviro Technology to diagnose and rectify any emerging problems quickly and efficiently.

“When we subcontract to third parties, it is vital that we have absolute confidence in their core capabilities and service levels – our reputation depends on their performance,” says Jo Green, Senior Air Consultant at AEA Technology. “Enviro Technology shares our commitment to customer service, and understands the importance of good, consistent air quality data.”

“Our offering is founded on the principle of excellence – in terms of the service levels we meet, the technical skill of our engineers and the depth and breadth of our support,” says Nigel Macefield, Technical Services Manager at Enviro Technology. “We refuse to compromise on quality, and that’s why we insist on measures such as providing genuine manufacture replacement parts and spares within the contract fee.”

Further information on the Kent and Medway Air Quality Monitoring Network is available at:  http://www.kentair.org.uk/

Further information on AEA Technology is available at: http://www.aeat.co.uk/cms/.

Further information on Enviro Technology is available at www.et.co.uk.

For further media information or images, please contact Mary Hamblyn at Trailblazer PR on 01453 887 777 or 07748 848 768. Email mary.hamblyn@trailblazerpr.com

Enviro Technology enhances EPC offering

Enviro Technology is enhancing its service to Engineering, Procurement and Construction (EPC) contractors with a dedicated engineer-led team focused on the air emissions monitoring needs of this sector.

The team’s approach is underpinned by engineering skill to ensure individual application appraisal and the development of tailored solutions. This leads to a comprehensive proposal and facilitates high quality project management with accurate planning for on-time, on-budget project delivery.

All of Enviro Technology’s equipment meets required industry standards, such as MCERTS approval. And extensive experience gained from the installation of over 100 CEM (continuous emissions monitoring) systems ensures the team is able to recommend the most appropriate and cost-effective system for the project.

Project management is further enhanced by an understanding of the practicalities of system design and installation, as well as expertise in shipping (both UK and export) and the ability to produce high-quality project documentation.

For EPC contractors requiring compliance-led systems – for instance, if their clients operate under the Large Scale Combustion Plant Directive (LCPD) or the Waste Incineration Directive (WID) – the team can provide expert assistance on complex issues. An in-depth understanding of the intricacies of emissions regulations means Enviro Technology can help the entire compliance procedure run smoothly.

“EPC contractors need to be confident that they are working with knowledgeable suppliers who will ensure project implementation and installation is hassle-free,” says Phil Battye, CEMS Engineering Manager at Enviro Technology. “Competitively priced, industry-approved monitoring systems are only half of the story. Good quality equipment needs to go hand-in-hand with engineering skill, intelligent project management and an understanding of the importance of compliance. With our EPC-focused team we can offer quality assurance both on our products and on our services.”

Monitoring parameters of Enviro Technology’s systems cover SO₂, NO₂, NO, HCI, HF, NH₃, Hg, CL₂ CO, CO₂, H2O, H₂S, O₂, TOC, (THC), O₃, benzene, toluene, xylene, styrene, formaldehyde, VOCs, contaminant gases, dust, temperature, pressure and velocity. Further information is available at www.et.co.uk.

For further media information or images, please contact Mary Hamblyn at Trailblazer PR on 01453 887 777 or 07748 848 768. Email mary.hamblyn@trailblazerpr.com

All hire equipment is thoroughly tested, calibrated and fully prepared prior to delivery and ET can even provide installation and commissioning services. We can also provide local site operation (LSO) service and data collection and data management for clients.

Analysers / Systems Available For Hire / Rental.

• Teledyne API M100 A/E  UV Fluorescent SO2 Analysers
• Teledyne API M200 A/E Chemiluminescent NOx Analysers
• Teledyne API M300 A IR-GFC CO Analysers
• Teledyne API M400 A/E UV Absorption O3 Analysers
• BAM1020 beta-attenuation PM10 particulate Analysers
• BAM1020 beta-attenuation PM2.5 particulate Analysers
• MiniVOL Portable PM10/PM2.5/TSP Samplers
• Sven Lekel SEQ 47/50 CEN12341 Sequential Gravimteric Sampler.
• Sven Lekel LVS-3 CEN12341 Single Fliter Sampler.
• OPSIS AR500 UV DOAS multi-gas open-path monitoring system for BTEX, SO2, NO2, O3.
• Data loggers.
• Communications systems including GPRS, GSM and modem.
• Meteorological sensors and masts.

ET can also offer a wide range of mobile and static air-conditioned weatherproof enclosures.

• PR4, PR5 and PR10 size Roadside Enclosures.
• Twin axled trailers.
• Groundhog trailer including roof mounted OPSIS open-path AQM system.

Tekran 2700 Automated Methyl Mercury Analyser

ET to supply University of Oxford, Department of Earth Sciences with Tekran Mercury System.

The highly acclaimed Earth Sciences department of University of Oxford has recently ordered a Tekran 1130 Reactive Gaseous Mercury Speciation unit from ET.

The department already uses the world-leading Tekran 2537A continuous ultra-trace mercury vapour analyser previously supplied by ET.

Tekran launches new Automated Methyl Mercury Analysis System.

The new Tekran 2700 offers a fully integrated, self-contained compact unit based on atomic fluorescence detection and is operated via state-of-the art software.

The 2700 offers a fully integrated, self-contained compact unit based on atomic fluorescence detection and operated via state-of-the-art software.

• Superior Atomic Fluorescence Detector
• Export Support
• Designed for Flexibility
• Intuitive Software Interface

• Highly sensitve, ultra-stable CVAFS Hg detector.
• MDL of 0.004 ppt (25 mL sample).
• Built-in GC oven (isothermal or ramped heating).
• IR trap heating and active cooling.
• Syringe drive for precise volumetric injection.
• Liquid detector halts system if water enters gas lines.
• Heated volume manifold prevents potential losses.
• Interfaces to ICP-MS to yield isotopic rations of methyl mercury.

Steve continues “having ISO14001 accreditation is only one element of our environmental goals and targets, a raft of initiatives and incentives are already under way including the purchase of electricity from renewables sources, the gradual roll-out of hybrid and alternative fuel vehicles accross the entire ET fleet and more importantly the design and manufacture of less energy consuming and more environmentally friendly products and systems”.

Enviro Technology Services Plc is committed to ensuring that the risk of any environmental damage or pollution caused by the company going about its day-to-day business is minimised as far as possible. To this extent the company has produced and works within an Environmental Policy.

Click here to read the full environmental statement

Company Policy – WEEE Directive

The EU Waste Electrical and Electronic Equipment Directive comes into force from 14th August 2004 with full implementation by August 2005. Click below to find out more about the directive and how ET is planning on dealing with it.

Click here to read the full WEEE Directive.

Enviro Technology Services plc

Environment, Health & Safety & Quality Policy Statement

Enviro Technology Services offers a wide range of advanced air quality monitoring systems from individual analysers to sophisticated turnkey networks, with after sales service and operational back-up.

In delivering our services we recognise that we will have an impact on the surrounding environment and that health and safety risks will arise. We therefore accept as our moral duty the need to take all practical steps to prevent harm to anyone, the environment, and our customers’ assets. It is the responsibility of everyone on site to co-operate with management to prevent injury to themselves and others and to help improve environmental and quality performance.

It is therefore our priority and policy to:

• Achieve the highest standards of health and safety performance through the minimisation of risk to everyone.

• Minimise the environmental impact of our activities in terms of resource consumption, pollution and waste creation.

• Exceed the expectations of our customers’ and stakeholders.

In order to realise these policy aims, we will:

• Comply with all the applicable health, safety, environment and employment legislation and industry standards.

• Continually improve our safety, health, environment and quality performance.

• Commit to working in a way, which will cause as little damage to the environment as is practicable making every effort to avoid the unnecessary creation of waste by adopting a strategy of waste minimization via reduction, reuse and recycling.

• Establish and resource improvement plans with challenging and measurable objectives and targets.

• Expect the co-operation and commitment of everyone on, or connected with, the site in delivering improved performance.

• Work positively with all our customers and all other stake holder organisations and individuals and strive to understand their needs and meet their requirements.

This policy is implemented for all our activities through the ongoing development and implementation of an integrated and documented Health, Safety, Environment and Quality Management System that meets the requirements ISO 9001, ISO 14001, OHSAS 18001 and HS (G) 65.

This policy is communicated to all staff and is made available to the public via the company’s website www.et.co.uk/IT.

This policy shall be reviewed and updated on an ongoing basis to ensure its continued effectiveness.

If you need to talk to someone about how to fill out this form them please call Jim Budd or Phil Battye.

EnviroNews Spring 2010

]]> http://www.et.co.uk/media/newsletter/environews-spring-2010/feed/ 0 http://www.et.co.uk/media/adverts/wp-contentuploads201004et-three-reasons-ad-aqb-pdf/ http://www.et.co.uk/media/adverts/wp-contentuploads201004et-three-reasons-ad-aqb-pdf/#comments Fri, 16 Apr 2010 11:25:47 +0000 duncan http://www.et.co.uk/?p=2568

3 GOOD REASONS to contact Enviro Technology BEFORE April

3 good reasons to choose ET for CEMS

]]> http://www.et.co.uk/media/adverts/et-cems-ad-180-x-125-iet/feed/ 0 http://www.et.co.uk/products/services-products/services-contracts/services-questionnaire/ http://www.et.co.uk/products/services-products/services-contracts/services-questionnaire/#comments Fri, 16 Apr 2010 04:36:04 +0000 duncan http://www.et.co.uk/?p=2490

BAM 1020 Particulate Analyser

The BAM-1020 is one of the World’s most popular continuous ambient particulate analysers.

The BAM is internationally approved and is a certified “equivalent method” to the EU CEN 1234-1 standard reference method.

Over 300 x BAM-1020 PM10 particulate analysers are in daily operation throughout the UK.

The BAM-1020 measures hourly averages of PM10 and therefore meets all of the UK and EU requirements for PM10 reporting (based on a 24 hour mean value).

ET is pleased to now introduce the BX-895 Real Time Module RTM) which is a low cost, simple add-on unit enabling the BAM to now measure particulate matter on a truly real-time basis in addition to the BAM’s standard hourly averages.

Choose from 1 ,5, 10, 15, 30 or 60 minute averages which can either be logged by the BAM-1020 or any other analogue data logger.

The BAM-1020 input channel can be scaled with a user-selected multiplier to compensate for differences between the RTM and BAM data caused by local particulate characteristics.

Download the BX-895 Real Time Module (RTM) Data Sheet Here!

Defra

Air quality monitoring equipment specialist, Enviro Technology (ET) has won a major contract with Defra for the supply of 28 continuous gas analysers and 6 monitoring enclosures for the UK’s AURN (Automatic Urban and Rural Network).

The Stroud based company is no stranger to Defra or the AURN and has been supplying equipment and services to the UK Government’s environmental department and Europe’s premier air quality monitoring network since 1992.

“We are delighted to have been awarded this contract and are proud to supply Defra with the additional analysers and monitoring enclosures they require” says Duncan Mounsor, ET’s Sales & Marketing Director.

Duncan continues “We shall be supplying to Defra 28 analysers in total, all from the leading US analyser manufacturer Teledyne API. The total number of analysers ordered include: 11 x M200E Chemiluminescent NOx analysers, 10 x M400E UV Absorption O3 analysers and 7 x M100E UV Fluorescent SO2 analysers”

In addition to the popular, MCERTS approved Teledyne API gas analysers, Defra has also ordered 6 x weatherproof, temperature-controlled air quality monitoring enclosures from ET.