Combustion Flue Gas, Products, Testo
Flue gas analyzer for industry emission measurement – testo 340
Description
“Precise technology: That’s what you can rely on when you’re working out in the field. But precise technology is nothing if it is not versatile, easy to use and adaptable for use in the field. The testo 340 flue gas analyzer meets all these expectations and much more.
Industrial emission measurement with testo 340 flue gas analyzer
Which sensors do you need in the course of your daily work and which measurements do you normally need to carry out? The testo 340 flue gas analyzer comes standard-fitted with an O2 sensor and four more sensors (CO, COlow, NO, NOlow, NO2 or SO2 ) for you to choose from, allowing you to customize your flue gas analyzer to suit your individual demands. 
The analyzer’s compact design and the reliable technology ensure increased mobility, making it ideal for use in on-site service operations and for installing or carrying out checks on firing plants or energy production systems. To find out more about the different application possibilities and to see which industrial applications your testo 340 flue gas analyzer is suitable for, just click on the “Applications” tab.
High gas concentrations? No problem with the flue gas analyzer testo 340!
The flue gas analyzer has an extended measuring range which allows you to carry out measurements even when gas concentrations are very high (i.e. during industrial flue gas analysis). The extended measuring range (thinning) is activated automatically when high gas concentrations suddenly occur. The demands on the sensor are no different to than when the flue gas analyzer is used in low gas concentrations.”
USPs
- Can measure CO, COlow, NO, NOlow, NO2 or SO2
- Extended measuring range for use in environments with high gas concentrations
- Can measure CO, COlow, NO, NOlow, NO2 or SO2
- Integrated pressure difference and air flow measurements for mass flow calculations
Delivery Scope
“testo 340 flue gas analyzer, calibration certificate, shoulder strap, O2 sensor and integrated flow and pressure difference measurements.
Please note that your testo 340 must be fitted with a second gas sensor for it to work. Up to three additional sensors can be fitted.”
Downloads
Download Datasheet Instruction manual
Application Image

Technical Details
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
 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
 Flue gas COlow 
 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
 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
 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
 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  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  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
 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
 Product colour  Black
 Connectable probes  1 x flue gas probe; 1 x temperature probe; 1 x differential pressure
 Battery life  > 6h (Pumpe an, Displaybeleuchtung aus, bei 20°C) / > 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
 Max. neg. press./flue gas  -200 mbar
 Max. pos. press./flue gas  50 mbar
 User defined fuels  10 user-defined fuels incl. test gas as fuel
 Hose length  max. 7.8 m (corresponds to two probe hose extensions)
 Pump flow  0.6 l/min (regulated)
 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
