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.
testo 350 analyzer unit, equipped with O 2 , including differential pressure sensor, temperature probe input type K NiCr-Ni and type S, Pt10Rh-Pt, Testo data bus connection, rechargeable battery, integrated combustion air probe (NTC), trigger input, measurement data memory, USB interface and carrying strap kit. Please note: The testo 350 analyzer unit can only be used in combination with the testo 350 Control Unit or the “easyEmission” software. These items are available separately.
| Temperature – NTC Measuring range | -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 |
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| 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 |
