Testo 300 Longlife Flue Gas Analyser with NO Sensor

The Testo 300 Longlife flue gas analyser is built for heating techs who are in and out of boiler rooms all day. It gives you quick, reliable readings for O2, CO (up to 15,000 ppm), and NO, helping you diagnose combustion issues fast.

On an Australian winter morning, when you've got a busy schedule of heater services, a tool that's quick to set up and easy to use like your phone really helps keep the day running smoothly.

Best For

• Heating engineers and HVAC service teams
• Boiler installation and maintenance specialists
• Apprentices learning combustion analysis

Compatibility

This analyser is designed for measurements on a wide range of heating systems, including gas flow pressure and differential temperature checks when paired with optional probes. It's built for general heating system diagnostics and compliance.

If you're running a different model, check fittings and specs before ordering.

Features

• Longlife Sensors: Equipped with O2 and CO sensors rated for up to 6 years service life, reducing replacement frequency.
• Integrated Fresh Air Dilution: Allows CO measurement up to 15,000 ppm, protecting the sensor from overload.
• Smart-Touch Display: Intuitive 5-inch HD touchscreen for easy navigation and quick access to measurement menus.
• Fast Zeroing: Integrated draught and gas zeroing without needing to remove the probe from the flue.
• On-site Documentation: Create, save, and email PDF measurement reports directly from the instrument via WLAN.
• Magnetic Mount: Strong integrated magnets allow for easy, secure attachment to metal surfaces during measurements.

Technical Specifications

What's in the Box

• Testo 300 Longlife flue gas analyser
• Integrated O2 and CO sensor (up to 15,000 ppm)
• Integrated NO sensor
• USB mains unit
• Testo Bluetooth Connector

Using It on the Job

1. Pre-Check: Ensure the analyser's battery is charged and sensors are zeroed. The unit can zero with the probe still in the flue, saving you time.
2. Connect Probe: Attach the appropriate modular flue gas probe (available separately) to your heating system's flue gas opening, ensuring a good seal.
3. Select Measurement: Use the smart-touch display to select the required measurement menu – flue gas, draught, pressure, or differential temperature.
4. Perform Test: Allow the analyser to take stable readings. The 5-inch HD display shows all parameters clearly.
5. Document: Save PDF reports directly on the device, get customer signatures, and email reports to the office via WLAN hotspot for job records.
6. Post-Use Care: Always store the analyser and probes cleanly, away from extreme temperatures, to protect the Longlife sensors.

Limitations & Safety Notes

• Measurement of gas flow pressure, pipe testing, differential temperature, or ambient CO requires additional probes or accessories, sold separately.
• Always ensure the flue gas probe is correctly seated and sealed to prevent false readings or CO leaks.
• Follow all Australian standards and Safe Work guidance when performing combustion analysis on heating systems.
• While rugged, avoid dropping the instrument and protect the touch display from impact.

Tradie Pro Tip: Keep those Longlife sensors happy by always performing a proper zeroing procedure and cleaning your probes after each use. It really does extend their lifespan and keeps your readings accurate, saving you cash on replacements down the line.

Pair With

Pair with optional Testo modular flue gas probes, a suitable clamp-on temperature probe, or a printer for on-site hard copies. Check out our range of Testo accessories and calibration services to keep your gear spot on.