• In CO measurement, from 8.000 ppm, automatic dilution is carried out up to min. 30,000 ppm CO
  • Color graphic display with 240 x 320 Pixels
  • Graphic processing of measurement data
  • Pressure measurement up to 300 mbar
  • Gas pipe test and solid fuel measurement for CO / O2
  • Logger function for long-term measurements
  • Powerful Li-ion rechargeable battery
  • Integrated gas and draught zeroing without probe removal:
  • The probe can remain in the flue during zeroing


The Testo 330-2 LL Combustion Analyzer features an extended sensor life of up to 6 years for O2 and CO in the testo 330 LL, the follow-on costs for the user are drastically reduced. At least one O2 and CO sensor replacement is saved during the course of the typical phase of use of the instrument. In addition to this, Testo gives 4 years' warranty on the complete instrument (testo 330-2 LL incl. O2 and CO sensors and probe).

The O2 long-life sensor stands out against the standard sensor through a more stable design, an improved diffusion barrier to protect the anode material and a lead-free metal alloy. It is therefore not only more durable but also more environmentally friendly.