14 Air Monitoring


Continuous Total Hydrocarbon Analysers for Environmental Analyses


Engine Emissions Analyser Further Improves Emissions Testing Capability An advanced FTIR analyser


installed at Intertek’s engine test facility in Milton Keynes is enabling engineers to improve the quality of their tests on the gaseous components of engine exhaust emissions.


MOCON, Inc., - Baseline’s (USA) 9000 Series family are advanced, industry-leading, continuous total hydrocarbon analysers for environmental analyses.


The analysers deliver unmatched performance, fl exible confi gurability, and continuous, fully automated gas analysis over a broad range of concentrations, whether looking for a total hydrocarbon, total methane/non-methane, or heated system. Applications include continuous emissions monitoring systems (CEMS), ambient air quality monitoring networks (AQM), clean rooms (AMC), compliance monitoring for EPA Methods 25A & 503, vehicle emissions, and source emissions monitoring - abatement system effi ciency.


The 9000 Series have an active range from < 10 ppb on the high sensitivity version, and up to 100% as methane on the percent level version. Standard outputs include alarm and fault relays, 0-20 mA or 4-20 mA analogue, or the suggested digital options, RS-232 or Ethernet. Confi gurations can also include components for single or multi-point analysis. Included PC-based software provides an external connection for instrument setup of alarms, relays, calibration, temperature, fl ows, confi guration, data export, and real-time data viewing.


The FlowGuard electronic control of the fuel, air, and sample delivery to the fl ame ionization detector (FID), with automatic ignition, improves safety, performance, and sensitivity. Alarms levels and calibration intervals are programmable.


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The gas analyser manufactured by Gasmet Technologies and installed by their UK subsidiary, Quantitech, measures multiple organic and inorganic components simultaneously from a large library of compounds, enabling Intertek’s engineers to quickly and easily change the measured compounds; to change the fuel


type or cycle conditions, and to see the impact on the emitted gases. The FTIR gas analyser is also highly portable so that it can be employed in any of the test cells at Intertek, a leading Total Quality Assurance provider.


Intertek’s engine test facility, which accommodates every type of motor vehicle engine covering all fuel types and including both hybrid and battery powered vehicles, provides its customers with the ability to conduct research on prototype engines and evaluate developments in engine technology. Intertek works with vehicle manufacturers, tier suppliers and high performance driveline development businesses.


The work in the test cells is complemented by Intertek’s ability to conduct on-road emissions testing using its state of the art Portable Emissions Measurement System (PEMS) to measure Real World Driving Emissions (RDE).


Intertek test engineer Cory Graham said: “Vehicle manufacturers are focused on improving both the performance and the emissions of their vehicles. FTIR provides a greater insight into exhaust emissions so that Intertek can assist manufacturers with their goals of improving air quality and lowering greenhouse gas emissions.”


Most recently the FTIR has been deployed in one of Intertek’s most sophisticated cells, which hosts a complete drive line including an engine, a gearbox and also a rig, which creates a complete ‘virtual’ car.


The regulatory tests that are undertaken on vehicles to check their emissions against international standards, have recently been under the spotlight, and the latest developments in the European Union will result in a move to vehicle emissions testing while the car is being driven (RDE) and this is now provided by Intertek.


Quantitech’s Dominic Duggan says: “Engine emissions testing is an ideal application for FTIR technology, because it provides automotive research and development engineers with a broad spectrum of measured compounds, creating a more complete picture of the products of combustion.”


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