Testo 340 Industrial Flue Gas Analyser NO2/NOx Kit
The Testo 340 Industrial Flue Gas Analyser NO2/NOx Kit is particularly suited to performing advanced analysis on stationary industrial engines. It features a Testo 340 Flue Gas Analyser fitted with specific NO sensors that fit alongside its impressive measurement functions across a wide range of different parameters.
Flue Gas Measurement
The Testo 340 Flue Gas Analyser can measure oxygen (0 to 25%), CO (0 to 10,000ppm), NO (0 to 4000ppm), NO2 (0 to 500ppm), temperature (-40˚C to 1200˚C, probe dependent), draught (-40 to +40hPa), differential pressure (-200 to 200hPa), and absolute pressure (600 to 1150hPa). It can also calculate units such as efficiency (0 to 120%), flue gas loss (0 to 99.9%), flue gas dew point (0 to 99.9˚C), and CO2 (0 to CO2 max.).
The Testo 340 has extremely high accuracies for both measured and calculated values alongside excellent precision for each parameter. A particularly useful function on the analyser is the dilution feature which greatly increases the ranges for chemical concentration measurement. NO measurement jumps up to 20,000ppm, NO2 to 1000ppm, and CO to 50,000ppm, all without overloading the sensor.
Smart Features
Aside from its advanced measurement functions, the Testo 340 also boasts a range of smart features. Readings are shown on the four-line digital display and 13 different fuel types are saved to the internal memory with the option to add more fuel types as required. The logical internal database can save up to 200 records for up to 1000 separate locations.
Readings from the database can be transferred via wireless Bluetooth communication to the free Testo Combustion App on a compatible smart device. The app also allows the user to exert remote control over the analyser, save and send measurement protocols, view test data and print results on a Testo Bluetooth Printer. The analyser has an additional infrared port for use with Testo IrDA printers and is also compatible with optional Testo easyEmission analysis and reporting software.
Practicality
The Testo 340 NO/NO2 Kit has numerous innovations that make it easy to use. The Testo 340’s quick and simple probe connection system means that the analyser is compatible with a wide range of probes and that these probes are easy to change in the field. An rugged 7.8m gas sampling hose is available as an optional extra.
The compact, sturdy design of the analyser makes it ideal for tough environments and the integrated gas pump keeps flow constant when there is a problem with over pressure or negative pressure. Supplied accessories include a battery charger, carry strap and carry case.
Testo part number: 0563 9350
Key Features
- O2 range: 0 to 25%
- CO range (H2-compensated): 0 to 10,000ppm
- NO range: 0 to 4000ppm
- NO2 range: 0 to 500ppm
- Dilution for NO, CO, NO2
- Temperature range: -40˚C to 1200˚C (probe dependent)
- Draught range: -40hPa to 40hPa
- Differential pressure range: -200hPa to 200hPa
- Absolute pressure range: 600hPa to 1150hPa
- Efficiency, flue gas dew point, flue gas loss, CO2 (calculated)
- Ideal for servicing/maintenance of stationary engines
- Large internal memory
- Compatible with wide range of probes
- Internal gas pump
- Two-year warranty
Probe Options
Please note that the Testo 340 NO2 / NOx Kit does not come with any probe as standard. The three maintain probe types are described below but a full list is available in the Testo 340 Brochure in the ‘Product Documents’ section.
Standard flue gas probes – The Testo 340 is compatible with standard modular flue gas probes with a temperature measurement range from 500˚C to 1000˚C, a probe length of 335mm or 700mm, and dust particle filters.
Gas sampling probes for industrial engines – These sampling probes are particularly useful for analysis and emission control on industrial engines, ideal for use with the Testo 340 NO2/NOx Kit. They can be fitted with an additional thermocouple sensor that allows measurement of exhaust gas temperature.
Industrial gas sampling probes – Specifically designed for environments subject to high temperatures, high dust loads, and wet flue gas, these probes are ideal for industrial settings.
|
Basic |
NOx/NO2 |
SO2 |
O2 |
0-25% |
0-25% |
0-25% |
CO |
0-10,000ppm |
0-10,000ppm |
0-10,000ppm |
NO |
0-4000ppm |
0-4000ppm |
0-4000ppm |
NO2 |
|
0-500ppm |
|
SO2 |
|
|
0-5000ppm |
Temperature |
-40˚C to 1200˚C |
-40˚C to 1200˚C |
-40˚C to 1200˚C |
Draught |
-40 to 40hPa |
-40 to 40hPa |
-40 to 40hPa |
Differential pressure |
-200 to 200hPa |
-200 to 200hPa |
-200 to 200hPa |
Absolute pressure |
600 to 1150hPa |
600 to 1150hPa |
600 to 1150hPa |
Efficiency |
0 to 120% |
0 to 120% |
0 to 120% |
Flue gas loss |
0 to 99.9% |
0 to 99.9% |
0 to 99.9% |
Flue gas dew point |
0˚C to 99.9˚C |
0˚C to 99.9˚C |
0˚C to 99.9˚C |
CO2 |
0 to CO2 max |
0 to CO2 max |
0 to CO2 max |
Testo 340 Industrial Flue Gas Analyser NO2/NOx Kit

The Testo 340 Industrial Flue Gas Analyser NO2/NOx Kit is particularly suited to performing advanced analysis on stationary industrial engines. It features a Testo 340 Flue Gas Analyser fitted with specific NO sensors that fit alongside its impressive measurement functions across a wide range of different parameters.
Flue Gas Measurement
The Testo 340 Flue Gas Analyser can measure oxygen (0 to 25%), CO (0 to 10,000ppm), NO (0 to 4000ppm), NO2 (0 to 500ppm), temperature (-40˚C to 1200˚C, probe dependent), draught (-40 to +40hPa), differential pressure (-200 to 200hPa), and absolute pressure (600 to 1150hPa). It can also calculate units such as efficiency (0 to 120%), flue gas loss (0 to 99.9%), flue gas dew point (0 to 99.9˚C), and CO2 (0 to CO2 max.).
The Testo 340 has extremely high accuracies for both measured and calculated values alongside excellent precision for each parameter. A particularly useful function on the analyser is the dilution feature which greatly increases the ranges for chemical concentration measurement. NO measurement jumps up to 20,000ppm, NO2 to 1000ppm, and CO to 50,000ppm, all without overloading the sensor.
Smart Features
Aside from its advanced measurement functions, the Testo 340 also boasts a range of smart features. Readings are shown on the four-line digital display and 13 different fuel types are saved to the internal memory with the option to add more fuel types as required. The logical internal database can save up to 200 records for up to 1000 separate locations.
Readings from the database can be transferred via wireless Bluetooth communication to the free Testo Combustion App on a compatible smart device. The app also allows the user to exert remote control over the analyser, save and send measurement protocols, view test data and print results on a Testo Bluetooth Printer. The analyser has an additional infrared port for use with Testo IrDA printers and is also compatible with optional Testo easyEmission analysis and reporting software.
Practicality
The Testo 340 NO/NO2 Kit has numerous innovations that make it easy to use. The Testo 340’s quick and simple probe connection system means that the analyser is compatible with a wide range of probes and that these probes are easy to change in the field. An rugged 7.8m gas sampling hose is available as an optional extra.
The compact, sturdy design of the analyser makes it ideal for tough environments and the integrated gas pump keeps flow constant when there is a problem with over pressure or negative pressure. Supplied accessories include a battery charger, carry strap and carry case.
Testo part number: 0563 9350
Key Features
- O2 range: 0 to 25%
- CO range (H2-compensated): 0 to 10,000ppm
- NO range: 0 to 4000ppm
- NO2 range: 0 to 500ppm
- Dilution for NO, CO, NO2
- Temperature range: -40˚C to 1200˚C (probe dependent)
- Draught range: -40hPa to 40hPa
- Differential pressure range: -200hPa to 200hPa
- Absolute pressure range: 600hPa to 1150hPa
- Efficiency, flue gas dew point, flue gas loss, CO2 (calculated)
- Ideal for servicing/maintenance of stationary engines
- Large internal memory
- Compatible with wide range of probes
- Internal gas pump
- Two-year warranty
Probe Options
Please note that the Testo 340 NO2 / NOx Kit does not come with any probe as standard. The three maintain probe types are described below but a full list is available in the Testo 340 Brochure in the ‘Product Documents’ section.
Standard flue gas probes – The Testo 340 is compatible with standard modular flue gas probes with a temperature measurement range from 500˚C to 1000˚C, a probe length of 335mm or 700mm, and dust particle filters.
Gas sampling probes for industrial engines – These sampling probes are particularly useful for analysis and emission control on industrial engines, ideal for use with the Testo 340 NO2/NOx Kit. They can be fitted with an additional thermocouple sensor that allows measurement of exhaust gas temperature.
Industrial gas sampling probes – Specifically designed for environments subject to high temperatures, high dust loads, and wet flue gas, these probes are ideal for industrial settings.
| Basic | NOx/NO2 | SO2 |
O2 | 0-25% | 0-25% | 0-25% |
CO | 0-10,000ppm | 0-10,000ppm | 0-10,000ppm |
NO | 0-4000ppm | 0-4000ppm | 0-4000ppm |
NO2 | | 0-500ppm | |
SO2 | | | 0-5000ppm |
Temperature | -40˚C to 1200˚C | -40˚C to 1200˚C | -40˚C to 1200˚C |
Draught | -40 to 40hPa | -40 to 40hPa | -40 to 40hPa |
Differential pressure | -200 to 200hPa | -200 to 200hPa | -200 to 200hPa |
Absolute pressure | 600 to 1150hPa | 600 to 1150hPa | 600 to 1150hPa |
Efficiency | 0 to 120% | 0 to 120% | 0 to 120% |
Flue gas loss | 0 to 99.9% | 0 to 99.9% | 0 to 99.9% |
Flue gas dew point | 0˚C to 99.9˚C | 0˚C to 99.9˚C | 0˚C to 99.9˚C |
CO2 | 0 to CO2 max | 0 to CO2 max | 0 to CO2 max |