CODEL are world leaders in the design and manufacture of systems for continuous emissions gas monitoring (cems) and combustion control analysers, such as in-situ and extractive flue gas emissions analysers (analyzers), pollution sensors, dust monitor/particulate monitors, opacity/smoke monitors, flue gas analysers (analyzers), road tunnel atmosphere sensors and velocity monitors.


Our simple strategy to design well-engineered, rugged and reliable equipment that is capable of continuous operation over long periods has stood the test of time. With over 25 years experience and constant development of new products and continuous product improvements we have delivered a range of instruments that are capable of meeting today’s tough environmental and legislative demands.

Our continuous emission monitoring systems (CEMs), automated measurement systems (AMS), combustion control analysers and safety analysers incorporate the following types of instruments;

In-situ and extractive flue gas stack emissions monitors, pollution sensors, dust monitors/ particulate monitors, opacity / smoke monitors, flue gas analysers (analyzers), road tunnel sensors and flow monitors.


About Us

CODEL International Ltd is a UK-company based in Bakewell, in the heart of the Peak District National Park and specialises in the design and manufacture of high-technology instrumentation for monitoring atmospheric pollutant emissions and combustion processes.

The company was initially formed in 1982 to design and manufacture CO monitors for process control use. Over the years the increase in environmental issues and new international legislation has driven our research and development departments to continually improve and adapt our product range. Today our state of the art instrumentation is supplied to a wide range of worldwide industries from crematoria, glass, cement, steel manufacture, pharmaceuticals, through to incineration and power generation.

Our products cover a versatile range of instrumentation from low cost dust monitors through to fully automated and integrated emission monitoring systems. In addition to this extensive portfolio we have also proven to be experts in the supply of road tunnel atmospheric pollution sensors. With over 350 road and rail tunnel installations we are now recognised as the market leader.

All CODEL products are designed, assembled and tested at our premises in Bakewell. As an ISO9001/2000 accredited company our quality management system is continuously assessed for all elements of manufacture, supply, service and repair. With over 27 distributors and support centers worldwide our engineers are committed to providing total service solutions.

Quality Assurance ISO9001:2008 Approved

CODEL were first certified to the ISO9000 standard in October 1996 and were in fact the first manufacturer of emission monitoring equipment in England to achieve this certification.

Our quality management system is assessed for design, manufacture, supply, service and repair of emission monitoring equipment and complies with the current standards of ISO9001:2008


TunnelCraft - Model III - CO/NO/VIS Air Quality Monitor (AQM)

The TunnelCraft III CO/NO/VIS Air Quality Monitor (AQM) uses both infrared light and visible light channels to measure carbon monoxide, nitric oxide and visibility in a single compact instrument. The AQM consists of a transceiver that projects infrared beams to a reflector unit mounted 3m away. The reflected light is received by the transceiver and the specific absorption is measured to determine the visibility dimming coefficient, carbon monoxide and ...

Model GCEM40 Series - In-situ Flue Gas Analyser

The GCEM40 series is our latest generation of in-situ gas analysers. Designed for use primarily on combustion processes the analysers measure the key pollutants such as CO, NO, NO2, NOx, SO2, CH4, HCl, CO2 and H2O.


Stack emissions monitoring

Monitoring stack emissions is a fundamental requirement for most industrial processes. Our gas analysers, dust monitors and flow monitors are designed for a wide range of applications and can operate as a fully integrated system or as stand alone instruments.

CO gas monitoring for coal pulverising mills

Our range of safety analysers can offer early detection of fire / explosive conditions. From CO monitors for pulverising coal mills through to UV flame and smoke detectors installed on oil rigs and the cross-channel passenger shuttles, operated by Eurotunnel.


Technical Support Services

High technology instrumentation requires dedicated technical support, firstly to ensure reliable measurement availability and also to verify the calibration of the measurement to satisfy authoritative parties. Whether on-site or through remote PC connection our service teams offer global support.

Maintenance Contracts Services

Our maintenance contracts are tailor made to suit each plants specific requirements. Annual, quarterly or monthly service contracts with fully inclusive parts and labour cover along with 24Hr support are available.


SmartCEM - Emission Monitoring Software

SmartCem Emissions Monitoring Software provides the complete solution to data gathering and analysis on Codel based monitoring systems. With a simple installation and set-up routine, the program takes only minutes to load and configure and comes with a comprehensive on-board help feature. For complete peace of mind there’s also a telephone help line.


On-Site Training

Product training is available for all CODEL users or potential customers. Our product specialists can perform operator training either in-house or at your premises. This service is available for our entire product range.


View more


DCEM 2100 Opacity Monitor gains MCERTS certification

CODEL International is pleased to announce that the DCEM 2100 Opacity monitor has succesfully received MCERTS cetification. Tested by TUV Rhineland, the DCEM 2100 is certified under EN 15257 QAL1 for ...


Sustainability Live 2013


Company details

Business Type:

Industry Type:
Monitoring and Testing - Air Monitoring and Testing

Market Focus:
Globally (various continents)

Year Founded:


1,000,000 - 10,000,000 €

Office & Distributor locations:


Environmental XPRT is part of XPRT Media All Rights Reserved