Exhaust Emission Testing

Exhaust emission testing has become increasingly important to both manufacturers and operators of any form of equipment relying on the combustion of fossil fuels as exhaust emission limits are reduced and fines for non compliance increased.

HGL Dynamics has good knowledge of the requirements of turbine exhaust emission testing and extensive experience within the industrial turbine marketplace. This enables HGL to provide support for your emission testing requirements, including tests operation and monitoring and system maintenance / fault finding.

There are a number of test methods approved depending on the equipment location. Emission limits also vary being set by the appropriate National or Local Government. For Europe the standards are general EN or ISO and for North America the standards are set by the EPA

 The process of burning natural gas, diesel fuel, LCV, MCV (low/medium calorific value)  or bio-fuel in a turbine (or any other combustion system) produces  pollutants, the legislation sets limits that may not be exceeded

The following components have regulated emission levels due to their effects on the atmosphere;

  • Nitrogen oxides (NOx)
  • Total hydrocarbon (THC)
  • Carbon monoxide (CO)
  • Particulate matter (PM10)
  • Carbon Dioxide

HGL staff have knowledge and experience in performing such tests within major OEM turbine manufacturers, including:

  • measuring low levels of NOx & CO, hydrocarbons and carbon dioxide
  • ambient air testing & gas chromatography.
  • Gas turbine inlet measurements
  • Gas turbine exhaust measurements
  • Gas chromatography
  • Emissions fault finding
  • System audits

Examples of typical measurement method experience;





NOx: Nitrogen oxide

(Acid gas/smog formation / ozone depleting)

BS EN 14792:2005

Reference method: Chemiluminescence

Method 20: Gas Turbines

Method 7e: General

BS ISO 11042: 1996 for Gas Turbines

HC: Hydro-carbon

(Acid gas/smog formation / ozone depleting)

BS EN 12619:1999

Automatic method: FID (flame ionization detector)

Method 25A

CO: Carbon monoxide

(Acid gas/smog formation / ozone depleting)

BS EN 15058: 2006

Reference method: NDIR (non-dispersive Infa-red)

Method 10

CO2: Carbon dioxide

(Reference gas for measurement)


Method 3A: General

O2: Oxygen

(Reference gas for measurement)

Draft EN 14789

Reference method: Paramagnetism

Method 20: Gas Turbines

Method 3A: General

N2O: Nitrous oxide

Greenhouse gas)

Draft EN ISO 21258

Reference method: NDIR (non-dispersive Infa-red)

40 CFR Parts 86, 87, 89.

Reporting of green-house gases.



For further information and quoting please contact Spencer Hill at our Lincoln (UK) office.

Tel:      +44 1522 692916

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