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    testo 340 - Flue gas analyser for use in industry

    Product no. 0632 3340
    testo 340
    testo 340 application
    testo 340 application
    testo 340 application
    testo 340
    testo 340
    testo 340
    testo 340
    testo 340
    testo 340
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    testo 340
    This meter requires a probe for commissioning.
    Click here for sensor selection.
    +44 1420 358122
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    Your benefits
  1. Customisable Gas Sensors – Supports up to four configurable gas sensors for flexible and on-site replacements.
  2. Comprehensive Measurement Capabilities – Measures O₂, CO, COlow, NO, NOlow, NO₂, and SO₂ for a wide range of applications.
  3. Versatile Kit Configurations – Available in three different kit options to suit specific industrial needs.
  4. Designed for Industrial Use – Built for robust and demanding industrial applications.
  5. Seamless Data Management – Transfer and analyse measurement data easily on a PC or notebook.
    6. The testo 340 flue gas analyser is a high-performance emissions monitoring tool designed for industrial applications. Equipped with an O₂ sensor, an integrated flow and pressure difference measurement feature, and a calibration protocol, it delivers precise and adaptable flue gas analysis. The ability to add up to four gas sensors makes it suitable for a variety of industrial environments, ensuring reliable performance in high gas concentration conditions.

    Description

    The testo 340 flue gas analyser is a powerful and adaptable solution for industrial emissions monitoring. With a standard O₂ sensor and the flexibility to add up to four additional gas sensors (CO, NO, NOlow, NO₂, or SO₂), it offers a customisable approach to emissions measurement. This makes it an essential tool for professionals involved in installing, servicing, and inspecting combustion systems, energy production facilities, and industrial firing plants.

    Designed for use in challenging field conditions, the testo 340 is compact, robust, and easy to use, making it ideal for both domestic and international service operations. Its extended measuring range activates automatically in high gas concentration environments, ensuring precise and uninterrupted measurements while minimising sensor stress for prolonged operational life.

    To suit different industrial requirements, the testo 340 is available in three distinct kit configurations, allowing you to choose the ideal setup for your specific application. Measurement data can be easily transferred and analysed on a PC or notebook, simplifying reporting and compliance tracking.

    For leasing options and additional accessories, contact us today.

    Delivery Scope

    testo 340 flue gas analyzer, calibration protocol, shoulder strap, O2 sensor and integrated flow and pressure difference measurements.

    PLEASE NOTE: Your testo 340 must be fitted with a second gas sensor for it to work. Up to three additional sensors can be fitted.

    Technical data

    Differential Pressure - Piezoresistive

    Measuring range
    -200 to 200 hPa
    Accuracy
    ±1.5 % of mv (Remaining Range)
    ±0.5 hPa (-49.9 to 49.9 hPa)
    Resolution
    0.1 hPa

    Absolute Pressure

    Measuring range
    +600 to +1150 hPa
    Accuracy
    ±10 hPa
    Resolution
    1 hPa

    Flue gas O₂

    Measuring range
    0 to 25 Vol.%
    Accuracy
    ±0.2 Vol.%
    Resolution
    0.01 Vol.%
    Reaction time t₉₀
    < 20 s

    Sensor

    Flue gas probes

  6. Flue gas probes
    0600-9766-modular-flue-gas-probe
    Modular flue gas probe, 335 mm probe shaft length, Ø 8 mm, Tmax 500°C
      Product no.:
      0600 9766
      £ 370.00with VAT £ 444.00
      1
    • Flue gas probes
      Modular flue gas probe, 700 mm, 500 &deg;C
      Modular flue gas probe, 700 mm probe shaft length, Ø 8 mm, Tmax 500°C
        Product no.:
        0600 9767
        £ 449.00with VAT £ 538.80
        1
      • Flue gas probes
        Modular flue gas probe
        Modular flue gas probe, 335 mm probe shaft length, Ø 8 mm, Tmax 1000°C
          Product no.:
          0600 8764
          £ 499.00with VAT £ 598.80
          1

          • Pitot tubes

        • Pitot tubes
          Staurohr
          Stainless steel Pitot tube, length 350 mm, Ø 7 mm - for measuring flow velocity
            Product no.:
            0635 2145
            £ 150.00with VAT £ 180.00
            1
          • Pitot tubes
            Staurohr
            Stainless steel Pitot tube, length 500 mm, Ø 7 mm - for measuring flow velocity
              Product no.:
              0635 2045
              £ 160.00with VAT £ 192.00
              1
            • Pitot tubes
              Staurohr
              Stainless steel Pitot tube, length 1000 mm, Ø 7 mm - for measuring flow velocity
                Product no.:
                0635 2345
                £ 439.00with VAT £ 526.80
                1

                • Temperature probes

              • Temperature probes
                Combustion air temperatur probe
                Combustion air temperature probe, immersion depth 60 mm
                  Product no.:
                  0600 9797
                  £ 110.00with VAT £ 132.00
                  1
                • Temperature probes
                  Combustion air temperature probe
                  Combustion air temperature probe with an immersion depth of 190 mm – measuring range: 0 to +100 °C
                    Product no.:
                    0600 9787
                    £ 110.00with VAT £ 132.00
                    1

                    • Accessories

                    Accessories

                  • Accessories
                    testo easyEmission software
                    testo easyEmission software
                      Product no.:
                      0554 3334
                      £ 270.00with VAT £ 324.00
                      1
                    • Accessories
                      Mains unit international
                      International mains unit
                        Product no.:
                        0554 1096
                        £ 54.00with VAT £ 64.80
                        1
                      • Accessories
                        testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                        testo fast printer IRDA
                          Product no.:
                          0554 0549
                          £ 219.00with VAT £ 262.80
                          1

                          • Applications

                          Analysis of the gas atmosphere (thermal processes)

                          Flue gas analysis is used for thermal manufacturing processes, from ongoing emission control, via setting and optimisation of combustion systems, through to process monitoring. Flue gas analysis instruments serve to optimise operations and save fuel. At the same time, flue gas measurement enables checking and monitoring of flue gas emission limit values laid down by the authorities, along with functional testing of permanently installed emission instruments. Flue gas analysis instruments are increasingly used for monitoring process and product quality.

                          Advantages of the testo 340

                          Ideal for measurements at high concentrations

                          • When recording extremely high concentrations, the measuring range extension is automatically activated. This enables continuation of the measurement. The gas sensor is not subjected to any higher stress than it is at low gas concentrations. This ensures the sensor has the longest possible service life.

                          Service measurement on industrial engines

                          Flue gas analysis instruments are one of the items of equipment that are used on a daily basis by service engineers to achieve optimum tuning of engines. Flue gas measurement is used on industrial engines when they are commissioned, at regular maintenance intervals or for troubleshooting when they are running in an unstable way. The background to flue gas measurement is tuning the engine to the optimum operating parameters while complying with the limit value regulations in force. Maintenance work that is carried out regularly makes an important contribution to avoiding downtimes over the long term, to ensuring the quality of the system and thus a high level of efficiency and to having a significant influence on emission levels.

                          Advantages of the testo 340
                          Separate NO and NO2 measurement

                          • The real NOx value is measured with the NO and NO2 sensor combination. In gas engines, the NO2 component of the NOx value can fluctuate greatly, so the separate measurement of each of the gases is necessary for correct NOx values.

                          Measurements even at high CO concentrations

                          • At unexpectedly high concentrations (up to 50,000 ppm), the automatic dilution of the sensor with fresh air allows measurements even when the engine conditions are not defined, without negatively affecting the service life of the sensor.

                          Special flue gas probes for industrial engines as an accessory

                          • These probes are highly heat-resistant and specially designed to compensate for different pressure conditions, e. g. for measurements before and after the catalytic converter.

                          Engine-specific parameters

                          • The most important parameters for industrial engines such as O2, CO, NO, NO2, NOx and Lambda can be displayed simultaneously.

                          Service measurement on industrial burners

                          The testo 340 flue gas analysis instrument offers service engineers a vast range of technical functions. In addition to compliance with environmental regulations, it can also be used to check correct functioning and to optimise burner efficiency. Flue gas measurement is used on industrial burners for safe and efficient commissioning, at regular maintenance intervals or for troubleshooting when they are running in an unstable way.

                          Advantages of the testo 340
                          Time saving through helpful instrument pre-settings

                          • Typical fuels, a sensible sequence of flue gas parameters in the display and useful instrument settings are preset for each application. Tips on the display take the user through the measurement (no prior knowledge specific to the instrument needed). The testo 340 is ready for operation within just a few minutes.

                          Unrestricted measuring at high concentrations

                          • When commissioning burners or carrying out measurements on unfamiliar systems, very high concentrations can occur unexpectedly. The measuring range extension is automatically activated in such cases.

                          Always ready for use – even in tough day-to-day work

                          • The robust housing protects the measuring instrument from knocks.

                          Downloads

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                          Operating instructions

                          Software

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