testo 330i – Bluetooth Flue Gas Analyser

  • Operation independent of measuring location and display of readings via smartphone or tablet and the testo 330i App
  • Paperless documentation and report creation on site with the testo 330i App
  • Reliable attachment of the flue gas probe with the testoFix probe holder
  • Practical accessories, including probes and temperature probe

Click Here  to download the testo 330i – Bluetooth Flue Gas Analyser data sheet

Click Here  to watch the testo-330i The first remote controlled flue gas analyzer video

Click Here  to watch the Servicing a gas burner with the testo 330i Be sure Testo

Click Here  to watch the testo facility management system video


The testo 330i flue gas analyser combines the proven measuring technology of the preceding model testo 330 LL with a revolutionary new method of operation: operation independent of measuring location via smartphone, a sturdy testoFix probe holder and paperless documentation. This instrument embodies the current trends in flue gas measurement.
The centrepiece of the set is the testo 330i flue gas analyser with H2-compensated CO sensor. The flue gas analyser is therefore also approved for the official acceptance testing of heating systems.
Operation of the flue gas analyser and the display of readings are implemented independently of the measuring location via the testo 330i App on your smartphone or tablet. Here, you can make adjustments to the measuring instrument, analyse the flue gas values, enter customer data and create measurement protocols. You can then add comments or photos of the system to the protocols, and send them to the customer or your office via e-mail.

Requirement: iOS 7.1 / Android 4.3 or newer. Mobile end device with Bluetooth 4.0.

The testo 330i flue gas analyser also has the following impressive features

  • User-replaceable long-life sensors with a service life of up to 6 years. This saves at least one sensor replacement over the flue gas analyser’s typical useful life
  • TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) and EN 50379, Parts 1-3
  • Integrated draught and gas zeroing without removing the probe. The probe can remain in the flue during zeroing
  • Fresh air dilution upon exceeding a CO threshold value up to 30,000 ppm
  • Fully enclosed, particularly robust plastic housing
  • Also included in the set: a modular flue gas sampling probe (180 mm) with a 65 cm long, extra-flexible hose and a 190 mm long combustion air temperature probe.
  • The testoFix probe holder is included in the set, which enables the probes to be securely attached to the flue gas duct quickly and easily.

This global innovation also serves as a fall-proof suspension system for the testo 330i flue gas analyser. A mains unit and the practical system case, in which all set components can be stowed away compactly and safely, complete this set.


Flue gas analysis and flue gas measurement

At the core of the measuring technology of the testo 330i are the two long-life sensors for measuring O2 and CO. An NO sensor is optionally available. With the testo 330i, flue gas and draught are measured in parallel – therefore you always have an overview of all relevant readings on a screen in the testo 330i App.

Differential pressure measurement

You can also use the testo 330i flue gas analyzer to measure the gas supply on gas boilers. Measure the gas flow and gas resting pressure to ensure that a gas boiler can be commissioned properly. In conjunction with the manufacturer’s specifications concerning the nozzle pressure, the results of this measurement will enable you to tailor the output of the boiler to the home’s actual heat requirement.

O2 supply air measurement

In balanced flue systems, you can use the testo 330i to find out whether there is a leak in the flue gas system. For this, simply measure the O2 content of the combustion air in the dual wall clearance. This way, you can ensure that no flue gas is getting into the combustion air supply. This prevents damage due to condensate or impairment of the combustion process.

 Delivery Scope

  •  testo 330i with H2-compensated CO sensor 0632 3000 51
  • Modular flue gas probe with hose (650 mm) 0600 9780
  • Combustion air temperature probe (190 mm) 0600 9787
  • International mains unit 0554 1096
  • testoFix probe holder for probes with a diameter of 8 mm (0554 3006)
  • Instrument case for testo 330i, probes and accessories (dimensions: 520 × 130 × 400 mm, WxHxD) 0516 3302


Technical Data
Differential Pressure – Piezoresistive
Measuring range: 0 to 300 hPa
Accuracy: ±0.5 hPa (0.0 to +50.0 hPa) / ±1 % of mv (+50.1 to +100.0 hPa) / ±1.5 % of mv (Remaining Range)
Resolution: 0.1 hPa

Flue gas O₂
Measuring range: 0 to 21 Vol.%
Accuracy: ±0.2 Vol.%
Resolution: 0.1 Vol.%

Flue gas CO (with H₂-compensation)
Measuring range: 0 to 8000 ppm
Accuracy: ±10 ppm or ±10 % of mv (0 to 200 ppm) / ±20 ppm or ±5 % of mv (201 to 2000 ppm) / ±10 % of mv (2001 to 8000 ppm)
Resolution: 1 ppm

CO determination (with H₂-compensation), automatic dilution

Measuring range: 0 to 30000 ppm
Accuracy: ±200 ppm or ±20 % of mv (0 to 30000 ppm)
Resolution: 1 ppm

Flue gas NO
Measuring range: 0 to 3000 ppm
Accuracy: ±5 ppm (0 to 100 ppm) / ±5 % of mv (101 to 2000 ppm) / ±10 % of mv (2001 to 3000 ppm)
Resolution: 1 ppm

Option: Flue gas Draught
Measuring range: -9.99 to +40 hPa
Accuracy: ±0.02 hPa or ±5 % of mv (-0.50 to +0.60 hPa) / ±0.03 hPa (+0.61 to +3.00 hPa) / ±1.5 % of mv (3.01 to +40.00 hPa) (the greater value applies)
Resolution: 0.01 hPa

Measuring range: -40 to +1200 °C
Accuracy: ±0.5 °C (0.0 to +100.0 °C) / ±0.5 % of mv (Remaining Range)
Resolution: 0.1 °C (-40 to +999.9 °C) / 1 °C (Remaining Range)
dependent on the thermocouple

Flue gas degree of effectivity, Eta (calculated)
Measuring range: 0 to 120 %
Resolution: 0.1 %

Flue gas loss (calculated)
Measuring range: 0 to 99.9 %
Resolution: 0.1 %

Flue gas CO₂ calculation (calculated from O₂)
Measuring range: Display range 0 to CO₂ max
Accuracy: ±0.2 Vol.%
Resolution: 0.1 Vol.%

General technical data
Dimensions: 270 x 160 x 57 mm
Operating temperature: -5 to +45 °C
Power supply: Rech. batt. block 3.7 V / 2.6 Ah; Mains unit 6 V / 1.2 A (optional)
System requirements: requires iOS 7.1 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Maximum memory: 500000 readings
Storage temperature: -20 to +50 °C
Weight: 720 g (excluding battery)

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Home > testo 330i – Bluetooth Flue Gas Analyser

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