The robust housing has built-in impact protection (specially constructed X-shaped rubber edges), allowing the analyzer box to be used in tough conditions. Downtimes due to dirt in the instrument are almost completely eliminated by intelligent design and robustness. Inherently sealed chambers protect the interior of the instrument from dirt from the surroundings. Operation can be carried out with the control unit or in derict connection with a PC or notebook (USB, Bluetooth® 2.0 or CANCase). The analyzer box can, after programming, independently carry out measurements and store measurement data.

The plug-in connections for the probes and bus cables are locked by bayonet fittings, and therefore securely connected to the analyzer box. This prevents unintentional removal, avoiding false measurements.

The advantages of the analyzer box:

• Special chambers offer comprehensive protection for the sensors and electronics from dust and deposits.

All settings are carried out using the cursor button. The presentation of the measurement values takes place via the colour graphic display. Thanks to the internal memory, measurement data can be transferred from the analyzer box to the control unit. If required by the measurement, several analyzer boxes can conveniently be operated and controlled using one control unit

The advantages of the testo 350 control unit:

• Operation of the analyzer box and transfer of the measurement data even when the flue gas pipe and the adjustment site are separated, especiall helpful for industrial burners, for example.
• Measurement data can be transferred from the analyzer box to the control unit. This means the analyzer box can remain at the measurement site for further measurements, and the control unit taken away in order to process the measurement data.
• In order to protect the display in measurements over a longer period or during transport to different measurement sites in a system, the control unit can be attached to the analyzer box face-down.

• Helpful instrument pre-settings save time
  Typical fuels, a practicable order of the exhaust gas parameters in the display as well as useful instrument pre-settings are stored under each application (selection list in display. Information in the display guides the user through the menu, previous familiarity with the instrument is not necessary. The testo 350 is ready for use after only a few minutes.  
   
• Unrestricted measurement at high concentrations
  When commissioning burners and in measurements on unfamiliar systems, very high concnetrations can take the user by surprise. In these cases, the automatic measuring range extension is activated. 
   
• High availability even under difficult conditions
  The instrument diagnosis as well as warning reports in clear text inform the user of the current status of the flue gas analyzer. The large service opening in the testo 350 provides easy access to all relevant wearing parts such as sensors, filters and pumps. This means they can be quickly and easily cleaned or exchanged on site. The pre-calibrated sensors allow the exchange of sensors without test gas.
   
• Highmeasurement accuracy even in unsupervisedmeasurements
  The integrated gas preparation prevents condensate from entering the measuring instrument and damaging it. Condensate which occurs is automatically pumped off by a peristaltic pump. In addition to this, the gas preparation and the PTFE hose in the gas sampling probe avoid NO ₂ and SO ₂ absorbtion 0 this makes highly accurate measurements possible.

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> In the webshop, you can find the ideal ordering suggestion for     emission measurement on burners!
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• Easy, precise test gas adjustment by the user
  In order to fulfil the highest accuracy and comparability requirements, the testo 350 can, if needed, be adjusted using test gas on site.  
   
• Use under „tough“ conditions
  Special chambers and closed cooling loops isolate the instrument electronics and sensors from the ambient air. This means the sensor chamber is thermally separated from the other instrument components, and possible drift of the sensors due to thermal influences are reduced. 
   
• Highly accurate NOx measurements at low concentrations
  Emission measurement during monitoring and adjustment work on Low- NOx gas turbines requires a very high level of measurement accuracy because of the low NO concentrations. Thanks to the combination of the NO ₂ sensor and the special NOlow sensor with a resolution of 0.1 ppm, exactly these requirements are fulfilled. In addition to this, the integrated gas preparation and the special exhaust gas probe for industrial engines with a special hose provides protection from NO ₂ absorbtion. 
   
• Combination of measuring range extension and COlow sensor
  Thanks to the freely selectable dilution levels, concentrations of up to a maximum of 20,000 ppm can also be measured without any problems with the COlow sensor (measuring range 500 ppm).

> Product brochure – for you to download free of charge
> In the webshop, you can find the ideal ordering suggestion for     emission measurement on burners!
> Find full technical data here!

• Special instrument menu for the testing of exhaust gas preparation systems
  This exhaust gas menu allows the simultaneous measurement of exhaust gas concentrations before and after the catalytic converter. For this purpose, two analyzer boxes are connected to each other with the Testo databus cable. The measurement values of the two analyzer boxes are shown parallel to each other in the control unit's display, enabling a fast overview of the status of the converter.    
   
• Spatial distances
  For greater distances between the gas sampling site and the adjustnment site, the control unit can be connected with the analyzer box either via the Testo databus cable or by Bluetooth® 2.0.
   
• Highly accurate NOx measurement
  The testo 350 allows the separate measurement of NO and NO ₂. The high and fluctuating NO ₂ components in engine exhaust gas make this measurement necessary, in order to display the real NOx value of the engine. In addition to this, the integrated gas preparation and the exhaust gas probe with a special hose provide protection from NO ₂ and SO ₂ absorbtion.
   
• Automatic measurement range enxtension for unexpectedly high CO concentrations
  In measurements on unfamiliar systems, or under less than ideal operating conditions, unexpectedly high emission values (e.g. CO concentrations up to 50,000 ppm) can occur. In these cases, the measurement range extension is automatically activated. This means maximum sensor life. These useful pre-settings are already stored application-specifically in the instrument – the testo 350 thinks ahead!

> Product brochure – for you to download free of charge
> In the webshop, you can find the ideal ordering suggestion for     emission measurement on burners!b>
> Find full technical data here!

• Excellently suited to long-term measurements
  Controlled by defined measurement procedures, processes/furnace cycles can be monitored and analyzed over several days. The testo 350 conducts the measurements and saves the data in its internal store. The control can also be carried out directly via a PC and the easyEmission software. 
   
• Simultaneous exhaust gas analysis at different measuremnt sites
  In order to create a simultaneous profile of the furnace atmosphere and the combustion zones in large systems, up to 16 analyzer boxes can be connected with each other into a measurement system using the Testo databus cable. The control and operation can be carried out optionally either via the control unit or directly via a PC/notebook.
   
• Ideal for measurements at high concentrations
  Especially when recording extreme concentrations up to the % range, the measuring range extension is automatically activated. This allows the continuation of the measurement. The gas sensor is placed under no greater load than at low concentrations, a maximum sensor life is achieved – without additional costs for further gas sensors.
   
• Industrial standard instrument functions for more security
  Inherently closed cooling loops isolate the instrument's electronics and sensor from the ambinet air. This means using the testo 350 in dusty or dirty surroundings is no problem. The impact protection integrated into the housing protects the testo 350 from knocks and jars on the way to the measurement site.

> Product brochure – for you to download free of charge
> In the webshop, you can find the ideal ordering suggestion for     emission measurement on burners!
> Find full technical data here!