The testo 350 is a rugged, easy-to-use exhaust gas analyzer designed to meet the highest demands when it comes to carrying out precise industrial emission measurements and providing proper data administration. The Analysis Box can be operated with up to 6 gas sensors, 5 of which are optional. This allows you to select freely from sensors for CO, NO, NO2, SO2, H2S, CxHy and CO2.
Ideal for professional flue gas analysis and industrial emissions measurement on industrial engines, burners, gas turbines and in thermal processes: the testo 350 flue gas analyzer performs a variety of measuring and analysis tasks, impresses over the long term thanks to its heavy-duty industrial design and is also suitable for complex data acquisition.
The testo 350 flue gas analyzer comprises two units
The testo 350 Control Unit (separate product) with a clear graphic display, allows you to control emissions measurement. Operation is really easy: burner, gas turbine, engine and user-defined applications are available for selection in the menu. The Control Unit enables remote control of the analyzer unit even when there is a spatial separation of the flue gas pipe and the setting location – particularly recommended for emissions measurements on large plants.
The testo 350 analyzer unit is just what you need for carrying out emissions measurement, because it contains all the sensor technology and electronics. The testo 350 analyzer unit includes an O2 gas sensor as standard, but at least one additional sensor must be connected for commissioning (can be used with a maximum of 6 sensors). When connecting the optional sensors, you can choose between gas sensors for CO, CO2, NO, NO2, SO2, H2S or CxHy.
The measuring range extension enables unrestricted measurements to be carried out, even when there are high gas concentrations. In order to protect the sensor technology, the measuring range extension (dilution) is automatically activated when there are unexpectedly high gas concentrations. The measuring range of a selected sensor can be extended by a specific factor. The service opening on the underside of the instrument allows fast access to all relevant serviceable and wearing parts, such as pumps and filters, enabling users to clean or replace these. In addition, the testo 350 has numerous instrument diagnosis functions. Instrument notifications are output in cleartext, making them easy to understand. The current status of the flue gas analyzer is constantly displayed.
-20 to +50 °C
Accuracy
±0.2 °C (-10 to +50 °C)
Resolution
0.1 °C (-20 to +50 °C)
Ambient temperature probe
Temperature – TC Type K (NiCr-Ni) Measuring range
-200 to +1370 °C
Accuracy
±0.4 °C (-100 to +200 °C)
±1 °C (-200 to -100.1 °C)
±1 °C (200.1 to +1370 °C)
Resolution
0.1 °C (-200 to +1370 °C)
Temperature – TC Type S (Pt10Rh-Pt) Measuring range
0 to +1760 °C
Accuracy
±1 °C (0 to +1760 °C)
Resolution
0.1 °C (0 to +1760 °C)
Differential Pressure – Piezoresistive Measuring range
-40 to +40 hPa
-200 to +200 hPa
Accuracy
±1.5 % of mv (-40 to -3 hPa)
±1.5 % of mv (+3 to +40 hPa)
±0.03 hPa (-2.99 to +2.99 hPa)
±1.5 % of mv (-200 to -50 hPa)
±1.5 % of mv (+50 to +200 hPa)
±0.5 hPa (-49.9 to +49.9 hPa)
Resolution
0.01 hPa (-40 to +40 hPa)
0.1 hPa (-200 to +200 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
±0.8% of fsv (0 to +25 Vol.%)
Resolution
0.01 Vol.% (0 to +25 Vol.%)
Reaction time t₉₀
20 s (t₉₅)
Flue gas CO (with H₂-compensation) Measuring range
0 to +10000 ppm
Accuracy
±5 % of mv (+200 to +2000 ppm)
±10 % of mv (+2001 to +10000 ppm)
±10 ppm (0 to +199 ppm)
Resolution
1 ppm (0 to +10000 ppm)
Reaction time t₉₀
40 s
H₂ only as an indicator
Flue gas COlow Measuring range
0 to 500 ppm
Accuracy
±5 % of mv (+40 to +500 ppm)
±2 ppm (0 to +39.9 ppm)
Resolution
0.1 ppm (0 to +500 ppm)
Reaction time t₉₀
40 s
H₂ only as an indicator
Flue gas NO Measuring range
0 to +4000 ppm
Accuracy
±5 % of mv (+100 to +1999 ppm)
±10 % of mv (+2000 to +4000 ppm)
±5 ppm (0 to +99 ppm)
Resolution
1 ppm (0 to +4000 ppm)
Reaction time t₉₀
30 s
Flue gas Nolow Measuring range
0 to +300 ppm
Accuracy
±5 % of mv (+40 to +300 ppm)
±2 ppm (0 to +39.9 ppm)
Resolution
±0.1 ppm (0 to +300 ppm)
Reaction time t₉₀
30 s
Flue gas NO₂ Measuring range
0 to +500 ppm
Accuracy
±5 % of mv (+100 to +500 ppm)
±5 ppm (0 to +99.9 ppm)
Resolution
0.1 ppm (0 to +500 ppm)
Reaction time t₉₀
40 s
Flue gas SO₂ Measuring range
0 to +5000 ppm
Accuracy
±5 % of mv (+100 to +2000 ppm)
±10 % of mv (+2001 to +5000 ppm)
±5 ppm (0 to +99 ppm)
Resolution
1 ppm (0 to +5000 ppm)
Reaction time t₉₀
30 s
Flue gas degree of effectivity, Eta (calculated) Measuring range
0 to +120 %
Resolution
0.1 % (0 to +120 %)
Flue gas loss (calculated) Measuring range
0 to +99.9 %
Resolution
0.1 % (0 to +99.9 %)
Flue gas dewpoint (calculated) Measuring range
0 to +99.9 °Ctd
Resolution
0.1 °Ctd (0 to +99.9 °Ctd)
Flue gas CO₂ calculation (calculated from O₂) Measuring range
0 to CO₂ max
Accuracy
calculated from O₂ ±0.2 Vol.%
Resolution
0.01 Vol.%
Flue gas H₂S Measuring range
0 to +300 ppm
Accuracy
±5 % of mv (+40 to +300 ppm)
±2 ppm (0 to +39.9 ppm)
Resolution
0.1 ppm (0 to +300 ppm)
Reaction time t₉₀
35 s
Flue gas CO₂ – NDIR Measuring range
0 to +50 Vol.%
Accuracy
±0.3 Vol.% + 1 % of mv (0 to 25 Vol.%)
±0.5 Vol.% + 1.5 % of mv (>25 to 50 Vol.%)
Resolution
0.01 Vol.% (0 to 25 Vol.%)
0.1 Vol.% (> 25 Vol.%)
Reaction time t₉₀
10 s
Velocity / Volume flow Measuring range
0 to +40 m/s
Resolution
0.1 m/s (0 to +40 m/s)
Methane (CH₄) Measuring range
100 to 40000 ppm
Accuracy
4000 ppm)
Resolution
10 ppm
Min. O₂ requirement in flue gas
2 % + (2 x mV methane)
Reaction time t₉₀
Response factor
1
Lower explosion limit (LEL) must be adhered to. The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
Propane (C₃H₈) Measuring range
100 to 21000 ppm
Accuracy
4000 ppm)
Resolution
10 ppm
Min. O₂ requirement in flue gas
2 % + (5 x mV propane)
Reaction time t₉₀
Response factor
1.5
Lower explosion limit (LEL) must be adhered to. The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
Butane (C₄H₁₀) Measuring range
100 to 18000 ppm
Accuracy
4000 ppm)
Resolution
10 ppm
Min. O₂ requirement in flue gas
2 % + (6.5 x mV butane)
Reaction time t₉₀
Response factor
2
Lower explosion limit (LEL) must be adhered to. The HC sensor is adjusted to methane ex-works. It can be adjusted to a different gas (propane or butane) by the user.
General technical data Weight
4800 g
Dimensions
330 x 128 x 438 mm
Operating temperature
-5 to +45 °C
Product-/housing material
ABS
Protection class
IP40
Product colour
Black
Connectable probes
1 x combustion air temperature probe; 1 x flue gas probe; 1 x temperature probe; 1 x differential pressure
Battery type
lithium batteries
Battery life
5 h
Power supply
AC mains unit 100V to 240V (50 to 60 Hz)
DC electric tension input
11V to 40V
Dewpoint calculation
0 °Ctd; 99 °Ctd
Max. dust load
20 g/m³ dust in flue gas
Max. neg. press./flue gas
-300 mbar
Max. pos. press./flue gas
50 mbar
Trigger input
Voltage 5 to 12 Volt (rising or trailing edge) pulse width > 1 sec load: 5 V/max, 5 mA, 12 V/max. 40 mA
Max. humidity load
70 °C dewpoint temperature
Hose length
16.2 m (corresponds to 5 probe hose extensions)
Pump flow
1 l/min. with through-flow monitoring
Maximum memory
250,000 readings
Interface
data bus; Bluetooth®; USB; IR/IRDA interface; Mains connection; trigger input; Differential Pressure; probe input/ probe inputs; DC-voltage input; dilution gas inlet for measurement range extension
Storage temperature
-20 to +50 °C
