The Testo 300 Pro Combustion Analyzer Kit is a commercial / industrial combustion analyzer with O2, CO and NO sensors.
The Testo 300 Pro is widely recognized in the HVAC and industrial sectors for its precision and reliability. Studies on combustion efficiency highlight the importance of accurate O2, CO, and NO measurements for optimizing fuel consumption and reducing emissions. Peer-reviewed industry articles and customer reviews consistently praise the Testo 300 Pro for its long-lasting sensors, intuitive interface, and robust build quality. Professionals commonly use this analyzer for boiler tuning, furnace maintenance, and detailed flue gas diagnostics, reporting increased accuracy and reduced service time in daily operations.
CO measurement is 0 - 8,000 ppm or with dilution to 30,000 ppm. This model includes long-lasting sensors with a four-year warranty for O2 and CO, and a two-year warranty for NO. This package contains a printer and features a slot for a third sensor equipped with an NO sensor.
Applications
Commercial
Combustion analysis
Testing and tuning all types of boilers, heaters, or furnaces
Draft
Temperature
Pressure
Combustion efficiency
Included Features
Intuitive measurement menus and fast-response Smart-Touch display
Includes O2, CO H2-compensated sensor up to 30,000 ppm, testo Bluetooth® Connector, and NO sensor
In the kit: Next-Gen Testo 300 Pro combustion analyzer with O2 Long Life, CO H2-compensated Long Life sensor up to 30,000 ppm, testo Bluetooth® Connector, NO, power adapter, modular flue gas probe, spare dirt filters, Bluetooth® printer, spare thermal paper, EasyHeat software, hard shell instrument case
Impressive Measuring Technology and Quality
O2 sensor and H2-compensated CO sensor up to 30,000 ppm thanks to integrated fresh air dilution
Testo Bluetooth® Connector (0554 3004)
NO sensor included
Longer sensor service life thanks to automatic sensor protection
Integrated draft and gas zeroing without removing the probe – the probe can remain in the flue during zeroing
High-quality Longlife sensors for O2 and CO with a service life of up to 6 years, reducing the need for frequent replacements
Integrated fine pressure and 4 Pa measurement for legally prescribed measurements
Manufacturer's warranty of up to 5 years on O2 and CO sensors with product registration – without a maintenance contract
Versatile probes and fast probe changes: quick-change probes and multi-functional handle allow use of longer shafts or flexible probes for hard-to-reach areas
Optional probes and accessories for additional measuring tasks such as gas flow pressure, gas pipe testing, differential temperature, and ambient CO measurement
Smart, Intuitive, Efficient: Easy Operation in Day-to-Day Work
Smart-touch display for intuitive operation: responds instantly like a smartphone
Clearly structured measurement menus for faster results
Create on-site documentation including values, location, and customer data
Save PDF reports directly in the instrument for easy access
Customer signature function for on-site approval of reports
Email measurement reports directly via WiFi hotspot
Large 5-inch HD display shows all system parameters at a glance
Testo interface for direct data transfer to industry or customer software*
Ready to use immediately in standby mode – no wait time for zeroing
Integrated Bluetooth® interface enables instant printing on-site with compatible printer
*Note: manufacturer integration into industry software is required to use this function.
Other Advantages
10-hour rechargeable battery life – sufficient for up to one week of standard use
Integrated extra-strong magnets for easy attachment during measurement
Q&A
What types of sensors are included in the Testo 300 Pro?
The kit includes an O2 sensor, a CO H2-compensated sensor up to 30,000 ppm, and an NO sensor. Long-life sensors provide extended service with minimal maintenance.
Can the analyzer be used for large flue gas ducts?
Yes, the instrument supports versatile probes, including longer probe shafts and flexible probes, allowing measurements in larger or hard-to-access flue gas ducts.
How are measurement reports created and shared?
Reports can be generated on-site with values, locations, and customer data, signed directly on the instrument, saved as PDFs, or emailed via WiFi to customers or the office.
What is the battery life for daily use?
The rechargeable battery lasts up to 10 hours per charge, which covers multiple days of standard measurement work without needing a recharge.
Is the Testo 300 Pro suitable for professional commercial applications?
Yes, it is designed for commercial and industrial use, offering accurate combustion analysis, efficiency measurement, and durability suitable for daily professional work.
±0.9 °F (32.0° to 212.0 °F) / ±0.5 °C (0.0 to +100.0 °C)
±0.5 % of mv (Remaining Range)
Resolution
0.1 °F (-40° to 1831.8 °F) / 0.1 °C (-40 to +999.9 °C)
±1 °F (Remaining Range) / 1 °C (Remaining Range)
Differential Pressure
Measuring range
-40 to +80 InH₂O / -100 to +200 hPa
Accuracy
±0.2 InH₂O (0 to +20.0 InH₂O) / ±0.5 hPa (0 to +50.0 hPa)
±1 % of mv (+20.0 to +40.0 InH₂O) / ±1 % of mv (+50.1 to +100.0 hPa)
±1.5 % of mv (+40.0 to +80 InH₂O) / ±1.5 % of mv (+100.1 to +200 hPa)
Resolution
0.00 InH₂O / 0.01 hPa
Flue gas O₂
Measuring range
0 to 21 Vol.%
Accuracy
±0.2 Vol.%
Resolution
0.1 Vol.%
Flue gas COlow
Measuring range
0 to 500 ppm
Accuracy
±2 ppm (40 to +500 ppm)
±5 % of mv Remaining Range
Resolution
0.1 ppm
CO determination (with H₂-compensation),automatic dilution
Measuring range
0 to 30000 ppm
Accuracy
±100 ppm or ±10 % of mv
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
Flue gas NOlow
Measuring range
0 to 300 ppm
Accuracy
±2 ppm (0 to +39.9 ppm)
±5 % of mv (40 to 300 ppm)
Resolution
0.1 ppm
Flue Gas Draft
Measuring range
-4.00 to +16 InH₂O / -9.99 to +40 hPa
Accuracy
±0.002 InH₂O (0 to 0.0 InH₂O) / ±0.005 hPa (0 to 0.1 hPa)
±0.01 InH₂O (0.0 to +1.20 InH₂O) / ±0.02 hPa (0.1 to +3.00 hPa)
±1.5 % of mv (+1.20 to +16 InH₂O) / ±1.5 % of mv (+3.01 to +40 hPa)
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