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Testo 330-1 LL

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The Testo 330-1LL flue gas analyser is the ideal tool for today's busy professional combustion engineer as it is fitted with long-life gas sensors. Supplied as standard kit with rechargeable battery, power supply / recharger, flue gas probe (180 mm long standard) and carry case. Optional printer and software available.

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  • Instrument video
  • Instrument FAQs

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In the Testo 330-1 LL, the follow-on costs for the user are greatly reduced by the extended sensor life of up to 6 years for O2 and CO. At least one sensor replacement is avoided during the typical duration of use of the instrument. In addition to this, Testo gives a warranty of 5 years on the complete instrument (testo 330-1 LL incl. O2 and CO sensors as well as the probe). At the press of a button, the instrument diagnosis provides information on qualitiative status, e.g. the filling level of the condensate trap, or of wearing parts such as the status of the gas sensors. The modular probes, such as those for differential temperature and pressure as well as for flue gas, are automatically recognized by the measuring instrument. The measurement results thus immediately appear in the menu.

330 features include:

  • Instrument diagnosis
  • Temperature measurement of ambient temperature with flow/return available with additional probes
  • Ambient CO and CO2 measurements with optional probes
  • Detects gas leaks using gas leak detection probe
  • Measurement for gas pressure
  • Gas/oil throughput
  • 200 measurement data sets memory function
  • IRDA interface for data transfer to PDA/Notebook
  • Tested to EN 50379-2 for O2, °C, hPa
  • Tested to EN 50379-3 for CO
  • USB interface for data transfer to PC
  • Data management with easyheat software (PC) and easyheat.mobile (Pocket PC) avaialbale as options.


Memory      200 samples

Display      Graphics display 160 x 240 pixel size screen

Operating temperature      - 5 to + 45 °C

Weight      600 g

Dimensions      270 mm x 90 mm x 65 mm

Flue gas probe:

Thermocouple      Type K

Measuring range      - 40 to + 1200 °C

Resolution      0.1 °C (- 40 to 9,999 °C), 1 °C (remaining range)

Gas cell type CO:

Measuring range      0 to 4000 ppm

Accuracy      Accuracy ± 20 ppm (0 to 400 ppm), ± 5 % of mv (401 to 1000 ppm), ± 10 % of mv (1001 to 4000 ppm)

Resolution      1 ppm

Response time      Approximately 35 s

Gas cell type O2:

Measuring range      0 to 21 Vol. %

Accuracy      ± 0.2 Vol. %

Resolution      0.1 Vol. %



Testo 330 series user manual

  • Technical Document
  • PDF file
  • 646 KB

Demonstration video

Testo 330 combustion analyser product overview



Can I use the Testo 330-1LL combustion analyser to measure vehice exhaust emissions ?


Definately no.  These instruments are unsuitable for use on vehicle exhaust emissions, and if used incorrectly it will damage the gas measurement cells.


Can you purchase replacement gas cells ?


No, all gas cells must we fitted by an Approved Service Company such as BSRIA Instrument Solutions as they may require adjustment or the upgrade of parameters such as instrument firmware.

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