Your flue gas measuring instrument for industrial plants

Flue gas analysis in industrial installations often needs to be carried out in extreme conditions, involving high temperatures, high humidity or a high dust content in the flue gas, for example. Emission measurements are taken in resource- and energy-intensive processes, during which large quantities of emissions such as carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxides (NOX) or sulphur dioxide (SO2) are produced. With a number of exhaust gas probes, sensors and special options such as automatic dilution or Peltier gas preparation, the exhaust gas analysers from Testo were specially developed for extreme demands.

Flue gas analysers from Testo offer you:

  • Numerous measurement parameters: O2, CO, NO, NO2, SO2, CO2, H2
  • Extensive selection of probes
  • Fast access to sensors and wearing parts
  • Measurement data management via software

Overview of all Testo emission analysers for emission measurements in industrial areas

Hand-held measuring intrument for portable, industrial emission measurement

  • testo 340
    • testo 340
  • The handy and compact 4-sensor emission measuring instrument for versatile emission measurements
  • 4 sensors
  • O2 (standard sensor)
  • Optional sensors:
    CO, COlow, NO, NOlow, NO2, SO2
  • CO2 determination
    (calculation from O2, standard)
  • Standard:
    Dilution of a sensor factor 5
  • Option:
    Dilution of all sensors factor 2

Professional, versatile measuring system for portable, industrial emission measurement

  • testo 350
    • testo 350
  • With 6 sensors and more flexibility, the system of control unit and analyser box allows an optimum solution for measurement tasks in industry
  • 6 sensors
  • O2 (standard sensor)
  • Optional sensors:
    CO, COlow, NO, NOllow, NO2, SO2, H2S, CxHy
  • CO2 measurement
    (Optional: when fitted with CO2 infrared sensor)
  • Option:
    Dilution of a sensor, selectable factor: 2, 5, 10, 20, 40
  • Standard:
    Dilution of all sensors factor 5

Further advantages:

  • Option: Peltier gas preparation
  • Option: fresh air valve for long-term measurement
  • Colour display
  • Option: SO2 low measurement heated / unheated
  • Option: connection of several analyzer boxes via databus

Measurement system for emission measurement on ships’ engines

  • testo 350 Maritime
    • testo 350 Maritime
  • The portable exhaust gas analysis system is the certified solution for emission measurements on marine diesel engines
  • 6 sensors
  • O2
  • Standard:
    CO, NO, NO2, SO2
  • Standard:
    CO2 infrared sensor
  • Standard:
    Dilution of SO2 factor selectable: 2, 5, 10, 20, 40
  • Standard:
    Dilution of all sensors factor 5

Further advantages:

  • Peltier gas preparation
  • Fresh air valve for long-term measurement
  • Colour display

Download the Practical Guide to Industrial Flue Gas Analysis

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Contains details on emissions and process guidelines

Overview of all areas of application



Flue gas analysis with Testo: professional and reliable.

Flue gases contain, among others CO2, CO, oxides or soot particles. These pollute the environment, have a negative effect on the climate and conceal numerous health risks for human beings. Flue gas analysis with professional flue gas analysers from Testo helps to make combustion processes more efficient, to optimise thermal processes, and above all, to reduce emissions.

  • Protection of the atmosphere thanks to as-low-as-possible pollutant level
  • The most efficient use of energy possible
  • Adherence to prescribed pollutant levels per exhaust gas volume and energy loss 
Testo smoke count measuring instrument

Smoke count measuring instrument – working with a degree of blackening measuring instrument

One of the smoke count measuring instruments is the degree of blackening measuring instrument. The handy instrument is able to measure the Filter Smoke Number and the soot concentration. It is possible for you to take the instrument with you and use it at different job sites. This special fine particle measuring instrument can carry out a direct evaluation.

This is especially important so that you have the data ready to hand on site and can react. This is important in particular with regard to testing diesel engines. This way, the occurrence of emissions is prevented. A diesel engine’ injection can also be adjusted in order to reduce the soot emission.

The instruments from Testo’s portfolio are also suitable for industry. It is therefore unimportant whether the diesel engines you wish to test are in vehicles, industrial plants or on ships. Measurement systems no longer need to be installed on site. This means a considerable saving of costs.