Testo 330i Combustion Analyzer with Bluetooth (O2, CO)

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  • Regular price $2,149.00


Testo 330i Combustion Analyzer with Bluetooth


  • Bluetooth connection to smartphones
  • Measures CO, O2, draft, temperature
  • Calculates CO2, efficiency, CO air free
  • CO with automatic fresh air dilution
  • Integrated gas and draft zeroing
  • Field-replacable, long life sensors
  • Rechargeable battery

The Testo 330i Combustion Analyzer combines the measurement reliability you expect from the Testo 330 series combustion analyzers with the versatility and connectivity of your smartphone. The new 330i can measure temperature, pressure, O2 and CO, and will calculate CO2 and combustion efficiency. The CO measurements are H2-compensated to meet the highest testing standards, and CO measurements can be made up to 30,000 ppm thanks to the automatic fresh air dilution. The Testo 330i sensors are warrantied for an amazing 4 years, and can last as long as 6 years without replacement. When the time comes to replace the sensors, the process can be completed in the field or at the office, with no need to return the 330i to Testo.

Reliable measurements are easily gathered by using the included TestoFix probe mount to securely fix the probe and measuring instrument to the flue at the testing point. The operation and display of the 330i takes place on your smartphone or tablet via Bluetooth and the free Testo 330i App. This means you are free to move within Bluetooth range (32 ft or 10m) while still monitoring active testing, and interacting with the testing device. Once you finish taking measurements, you can use the Testo 330i App and the data now on your phone or tablet to create client-ready reports complete with comments and photos.

Warranty Information

  • Instrument, probe, gas sensors (O2, CO); 4-years
  • Thermocouple and rechargeable battery; 1-year
Product Specs
Parameter Range Accuracy Resolution
Temperature (dependent on the thermocouple in the flue gas probe) -40 to 2192 °F
(-40 to 1200 °C)
±0.9 °F (32 to 212 °F)
[±0.5 °C (0 to 100 °C)]
±0.5% for rest of range
0.1 °F (-40 to 1832 °F)
[0.1 °C (-40 to 999.9 °C)]
1 °F/°C for rest of range
Draft -9.99 to 40 mbar ±0.02 mbar or ±5% (-0.50 to 0.60 mbar)
±0.03 mbar (0.60 to 3.00 mbar)
±1.5% for rest of range
0.01 mbar
Pressure 0 to 300 mbar ±0.5 mbar (0.0 to 0.50 mbar)
±1% (50 to 100.0 mbar)
±1.5% for rest of range
0.1 mbar
O2 0 to 21% vol. ±0.2% vol. 0.1% vol.
CO (not H2-compensated) 0 to 4000 ppm ±20 ppm or ±10% (0 to 400 ppm)
±5% (400 to 2000 ppm)
±10% (2000 to 8000 ppm)
1 ppm
CO (not H2-compensated) with activated measuring range extension 0 to 15000 ppm ±200 ppm or ±20% 1 ppm
CO (H2-compensated) 0 to 8000 ppm ±10 ppm or ±10% (0 to 200 ppm)
±20 ppm or ±5% (200 to 2000 ppm)
±10% (2000 to 8000 ppm)
1 ppm
CO (H2-compensated) with activated measuring range extension 0 to 30000 ppm ±200 ppm or ±20% 1 ppm
Efficiency Testing 0 to 120% - 0.1%
Flue Gas Loss 0 to 99.9% - 0.1%
CO2 Determination (Calculation from O2) Display range is
0 to CO2 max
±0.2% vol. 0.1% vol.
NO (Nitric Oxide) - - -
NOTE: Percentages are of measured value unless otherwise specified.
General Specifications
Memory 500,000 readings
requires iOS 7.1 or newer / Android 4.3 or newer
requires mobile end device with Bluetooth 4.0
Operating Temperature 23 to 113 °F (-5 to 45 °C)
Storage Temperature -4 to 122 °F (-20 to 50 °C)
Power Supply
Rechargeable battery block 3.7V / 2.6 Ah
AC/DC Adapter (optional)
Dimensions 10.6 x 6.3 x 2.25 in (270 x 160 x 57 mm)
Weight 1.6 lbs (720 g) without battery
  • Testo 330i Combustion Analyzer
  • Flue gas probe
  • Power supply/recharger
  • Hard carrying case with room for probes and accessories
  • Spare particle filter, 10 pack
  • TestoFix probe mount
  • Calibration protocol

Free Shipping


Our policy lasts 30 days. If 30 days have gone by since you received purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.