The Testo 340 Industrial Flue Gas Analyser is a fully customisable flue gas analyser suitable for testing emissions. A measuring range extension facilitates unrestricted measurement; it is automatically activated when high gas concentrations are detected. As standard, the Testo 340 FGA is supplied with an oxygen (O2) sensor; it can be customised to include three further sensors of your choice allowing you to tailor your Testo 340 Industrial Flue Gas Analyser to your requirements. Choose from the following sensors:
An optional Bluetooth module is also available. When configured with a Bluetooth interface, the Testo 340 Industrial Flue Gas Analyser can be operated remotely via an Android smartphone using Testo’s free app.
The Testo 340 Industrial Flue Gas Analyser also supports flow and pressure difference measurements and is compatible with a large selection of Testo probes. It is a compact, easy-to-use, reliable instrument ideal for commissioning, servicing, and maintenance work on industrial burners, stationary industrial engines, and gas turbines. The Testo 340 Industrial Flue Gas Analyser can also be used to measure the emissions of thermal processes.
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Differential Pressure - Piezoresistive | |
Measuring range | -200 to 200 hPa |
Accuracy |
±0.5 hPa (-49.9 to 49.9 hPa) ±1.5 % of mv (Remaining Range) |
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 |
Flue gas CO (with H₂-compensation) | |
Measuring range | 0 to 10000 ppm |
Accuracy |
±10 ppm or ±10 % of mv (0 to 200 ppm) ±20 ppm or ±5 % of mv (201 to 2000 ppm) ±10 % of mv (2001 to 10000 ppm) |
Resolution | 1 ppm |
Reaction time t₉₀ | < 40 s |
Flue gas COlow (with H₂-compensation) | |
Measuring range | 0 to 500 ppm |
Accuracy |
±2 ppm (0 to 39.9 ppm) ±5 % of mv (Remaining Range) data corresponds to 20°C ambient temperature. Additional temperature coefficient 0.25% of reading/K. |
Resolution | 0.1 ppm |
Reaction time t₉₀ | < 40 s |
Flue gas NO | |
Measuring range | 0 to 4000 ppm |
Accuracy |
±5 ppm (0 to 99 ppm) ±5 % of mv (100 to 1999 ppm) ±10 % of mv (2000 to 4000 ppm) |
Resolution | 1 ppm |
Reaction time t₉₀ | < 30 s |
Flue gas Nolow | |
Measuring range | 0 to 300 ppm |
Accuracy |
±2 ppm (0 to 39.9 ppm) ±5 % of mv (Remaining Range) |
Resolution | 0.1 ppm |
Reaction time t₉₀ | < 30 s |
Flue gas NO₂ | |
Measuring range | 0 to 500 ppm |
Accuracy |
±10 ppm (0 to 199 ppm) ±5 % of mv (Remaining Range) |
Resolution | 0.1 ppm |
Reaction time t₉₀ | < 40 s |
Note | To avoid absorption, a maximum measurement duration of 2 hours should not be exceeded. |
Flue gas SO₂ | |
Measuring range | 0 to 5000 ppm |
Accuracy |
±10 ppm (0 to 99 ppm) ±10 % of mv (Remaining Range) |
Resolution | 1 ppm |
Reaction time t₉₀ | < 40 s |
Note | To avoid absorption, a maximum measurement duration of 2 hours should not be exceeded. |
Differential Pressure flue gas Draught - Piezoresistive | |
Measuring range | -40 to +40 hPa |
Accuracy |
±0.03 hPa (-2.99 to +2.99 hPa) ±1.5 % of mv (Remaining Range) |
Resolution | 0.01 hPa |
Temperature | |
Measuring range | -40 to +1200 °C |
Accuracy |
±0.5 °C (0 to +99 °C) ±0.5 % of mv (Remaining Range) |
Resolution | 0.1 °C |
Flue gas degree of effectivity, Eta (calculated) | |
Measuring range | 0 to 120 % |
Resolution | 0.1 % |
Flue gas loss (calculated) | |
Measuring range | 0 to 99.9 % |
Resolution | 0.1 % |
Flue gas dewpoint (calculated) | |
Measuring range | 0 to 99.9 °Ctd |
Resolution | 0.1 °Ctd |
Flue gas CO₂ calculation (calculated from O₂) | |
Measuring range | 0 to CO₂ max |
Accuracy | ±0.2 Vol.% |
Resolution | 0.1 Vol.% |
Reaction time t₉₀ | < 40 s |
General Technical Data | |
Weight | 960 g |
Dimensions | 283 x 103 x 65 mm |
Operating temperature | -5 to +50 °C |
Product-/housing material | TPE PC |
Protection class | IP40 |
Connectable probes | 1 x flue gas probe; 1 x temperature probe; 1 x differential pressure |
Product colour | Black |
Battery life | > 6h (Pumpe an, Displaybeleuchtung aus, bei 20°C) |
Display type | graphic Display |
Display size | 160 x 240 pixels |
Display function | Graphic display |
Power supply | Battery block 3.7 V / 2.4 Ah, Mains unit 6.3 V / 2 A |
User-defined fuels | 10 user-defined fuels incl. test gas as fuel |
Pump flow | 0.6 l/min (regulated) |
Hose length | max. 7.8 m (corresponds to two probe hose extensions) |
Max. pos. press./flue gas | 50 mbar |
Max. neg. press./flue gas | -200 mbar |
Maximum memory | 100 folders |
Storage per folder | Max. 10 sites |
Storage per site | Max. 200 logs |
Miscellaneous | The max. number of logs is determined by the number of folders or sites |
Interface | Bluetooth®; USB; IR/IRDA interface; gas outlet; Mains connection; probe input/ probe inputs; Differential Pressure |
Storage temperature | -20 to +50 °C |