Testo 300 Flue Gas Analyzer

This Testo 300 Flue Gas Analyzer is your essential tool for dialling in heating systems, giving you accurate combustion readings right on the job. With its smart-touch display and robust build, it makes short work of checking O2, CO, draught, and differential pressure, helping you meet efficiency targets and keep Aussie homes warm.

Anyone who’s been stuck on a roof in summer trying to read a fading screen will appreciate this clear HD display.

Best For

• HVAC service technicians
• Plumbers and gasfitters
• Boiler maintenance teams
• Commercial heating engineers

Compatibility

The Testo 300 is designed for accurate flue gas measurement on heating systems running natural gas, LPG, or oil. Its H₂-compensated CO sensor is rated up to 8,000 ppm, making it suitable for a wide range of combustion applications.

Various optional probes and accessories are available for specific tasks like gas flow pressure, gas pipe testing, differential temperature measurement, and ambient CO monitoring. If you're running a different model, check fittings and specs before ordering.

Features

• H₂-Compensated CO Sensor: Accurately measures CO up to 8,000 ppm, crucial for modern heating systems, with automatic sensor protection for extended lifespan.
• Smart-Touch HD Display: Large 5-inch screen offers smartphone-like intuitive operation, displaying all measurements at a glance for quick diagnosis.
• Integrated Documentation & Email: Create and save PDF reports on-site, get customer signatures, and email directly via WLAN hotspot to the office or client.
• Quick Readiness: Standby mode means the analyzer is ready to measure instantly, eliminating wait times for lengthy zeroing phases between jobs.
• Versatile Probe System: Features quick-change modular probes and a multi-functional handle, allowing adaptation for different flue sizes and access points (probes sold separately).
• Long Battery Life: Provides up to 10 hours of operation, typically enough for a full week's worth of common measurement tasks.

Technical Specifications

What's in the Box

• Testo 300 flue gas analyzer (with O₂ and CO H₂-compensated sensor up to 8,000 ppm)
• USB mains unit
• Testo Bluetooth Connector

Using It on the Job

1. Power up the Testo 300 and allow it to perform its quick self-check; the standby mode ensures it's ready almost instantly.
2. Select the appropriate probe for the heating system you're working on and connect it securely to the analyzer's multi-functional handle.
3. Navigate through the intuitive smart-touch menu to select your desired measurement, such as flue gas, draught, or differential pressure.
4. Insert the probe into the flue gas path or measurement point, ensuring a tight seal, and initiate the reading.
5. Monitor the large 5-inch HD display for real-time data, adjusting burner settings as needed to achieve optimal combustion efficiency.
6. Once complete, use the on-board documentation feature to generate a PDF report, capture customer details, and even get a digital signature before emailing it from site.

Limitations & Safety Notes

• Specific probes and accessories for gas flow pressure, pipe testing, differential temperature, and ambient CO are sold separately.
• Always ensure the flue gas probe is correctly seated and sealed to avoid drawing in ambient air, which can skew readings.
• Follow manufacturer guidelines for sensor calibration and maintenance to ensure ongoing accuracy and reliability.
• Combustion analysis should only be performed by competent technicians following Australian standards for gas appliance servicing.
• Do not exceed the specified temperature or pressure limits for the probes and the main unit.

Tradie Pro Tip

"Keep a spare set of filters and a cleaning kit in your van for the probes. A blocked or dirty filter can throw off your readings and cost you time on site, especially in dusty plant rooms."

Pair With

Pair with a Testo flue gas probe kit for comprehensive analysis options or a clamp-on pipe temperature probe for flow and return measurements. Consider a compatible Testo Bluetooth printer for instant hard copies on site.