Flue gas analysers

Combustion analysers such as those from Sauermann - KIMO are measuring instruments commonly used to measure the efficiency and proper operation of liquid, gaseous or solid fuel boilers (oil, natural gas, wood, biomass, etc.). These devices produce heat to warm water or air in a heating system.

A flue gas analyser is also used to measure the combustion levels in an internal combustion engine, such as those used in cars, trucks, tractors, generators (gensets) and other motorised equipment.

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All the essentials for combustion gas analysis

Si-CA 030

The Si-CA 030 offers everything heating engineers need to inspect and maintain residential and commercial boilers, with wireless connection to our smartphone app and automatic generation of servicing reports and certificates.

High performance analyser, powered for industrial capabilities

Si-CA 230

With double the number of cells and expanded measurement capabilities, the Si-CA 230 is suited to the most powerful industrial machines. And with support for more gases and a high CO tolerance threshold, its versatility makes it the ideal choice across residential, commercial and industrial applications.

Comprehensive, versatile analyser with touch-screen display

Si-CA 130

The Si-CA 130 features a touch-screen display and comes with PC-based management software (in addition to the smartphone app) for more in-depth combustion gas analysis. The three field-replaceable cells and sensors offer expanded measurement capability.

Portable Industrial Combustion Flue Gas & Emissions Analyser

Si-CA 8500

Accurate, reliable, robust & fast, the Si-CA 8500 Combustion Analyzer is the most powerful and advanced portable emissions analyzer on the market. Complete portable tool for emissions level monitoring of boilers, engines, and other combustion equipment, this emissions monitoring device can boast as many as 9 gas sensors, detecting one of the widest spectra of gases: O2, CO, NO, NO2, SO2, CO2, CxHy, High CO, VOCs and H2S.

Diagnostics, performance, and optimisation

A boiler combustion analyser measures the gases involved in the combustion process, such as oxygen (O2), carbon dioxide (CO2) and unburnt hydrocarbons (CxHy, etc.), as well as the exhaust gas temperature and other important parameters such as the draft and pressure of the gas supply system.

Using these measurements, an electronic combustion analyser can calculate values such as combustion efficiency and air pollution (CO2, carbon monoxide, hydrocarbons, etc.). It thus verifies that the boiler is working efficiently and meets the current air pollution standards. It also allows the heating engineer to detect performance problems in a boiler and to optimise its combustion process to reduce its energy consumption and therefore its operating costs.

Safety, pollution, and standards

Combustion analysis is also a way of checking that a boiler is safe and reliable, which is important to avoid accidents, fires and excessive pollution. The efficiency of the boiler should therefore be monitored regularly and compared with the applicable standards.

This is why all boilers must be checked every year or every two years, depending on the type of boiler and the fuel used. The check is carried out by a certified professional and consists of a visual and technical inspection of the boiler, including the use of a measuring instrument such as a portable combustion analyser.

A boiler inspection usually ends with the creation of an analysis report that attests to the correct operation of the boiler. Today, this report is often automatically generated by the analyser and its associated application. It can be printed on-site using a wireless mobile printer, or sent in a digital version by email, generally in PDF format.

Evolution of combustion analysers

Flue gas combustion analysers have evolved considerably over the years due to the increasing importance of performance and air pollution regulations. This evolution has been rapid on several parameters and can be seen in the Sauermann - KIMO combustion analysers:

Improved accuracy
Increase in the range of measured parameters
Improved portability
Increased connectivity

In this blog post we have summarised in several points the qualities that are important to demand from a modern analyser:

Very high CO resistance (read more about CO dilution technology)
The ability to measure NOx if required
Multiple cells for simultaneous measurements
Certified reliability and measurement accuracy
Wireless connection to mobile applications
Automatic creation of analysis reports for easy export
Exemplary ergonomics to speed up interventions
High mobility: compact and light
A shock-resistant device
A wide range of options at the time of purchase

Other instruments for the control of combustion boilers

Glossary of gases measured in a combustion analysis:

CO (carbon monoxide)	Colourless, odourless and toxic	Produced during the incomplete combustion of fuels such as gas, oil or wood.
CO2 (carbon dioxide)	Colourless, odourless and non-toxic	Produced during the complete combustion of fuels such as gas, oil or wood.
CxHy (unburnt hydrocarbons)	Harmful to human health and the environment.	Molecules of carbon and hydrogen that are produced during the incomplete combustion of fuels such as gas, oil or wood.
H2S (hydrogen sulphide)	Flammable, colourless, foul smelling, highly toxic.	Derived from the sulphur in certain fuels such as fuel oil and coal.
NOx (nitrogen oxides)	Can be harmful to human health and the environment.	Produced during the high-temperature combustion of fuels such as gas, oil or coal.
NO (nitric oxide)	Colourless, odourless and non-toxic	Produced during the combustion of fuels such as gas, oil or wood.
NO2 (nitrogen dioxide)	Colourless, odourless and toxic	Produced during the combustion of fuels such as gas, oil or wood.
O2 (oxygen)	Colourless, odourless and non-toxic	Present in the air we breathe, necessary for combustion.

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