testo 300LL Longlife Kit with Printer and NO Sensor
O₂, CO H₂-compensated up to 30,000 ppm, NO includedThe testo 300LL Longlife Kit with Printer and NO Sensor is an advanced flue gas analyser kit for combustion analysis, high-range CO testing, NO emissions measurement, and professional on-site reporting.
How to Complete Combustion and NO Emissions Testing in One Kit
When engineers need to check both combustion performance and emissions, using one analyser saves time and improves consistency. This testo 300LL kit includes O₂ measurement, H₂-compensated CO measurement up to 30,000 ppm, and an NO sensor for nitric oxide measurement.This makes it ideal for commercial heating systems, industrial burners, plant rooms, and sites where emissions performance is part of the service or commissioning process. Engineers can assess appliance efficiency, carbon monoxide risk, and NO output without needing a separate emissions instrument.
Why NO Measurement Matters for Commercial and Industrial Heating
NO measurement helps engineers understand more than basic combustion safety. It supports emissions-focused testing, burner optimisation, and technical reporting on larger or more regulated heating systems.By measuring O₂, CO, and NO together, engineers can build a clearer picture of how the appliance is operating. This helps identify poor burner setup, excess emissions, incorrect air supply, and inefficient combustion.
Key testing capabilities include:
- O₂ measurement for combustion air checks
- H₂-compensated CO measurement up to 30,000 ppm
- NO sensor included for emissions testing
- Efficiency, CO₂, and excess air calculation support
- Printed measurement reports for service documentation
How Longlife Sensors Reduce Downtime
Busy engineers need an analyser that remains ready for regular use. Longlife sensor technology helps reduce interruptions caused by frequent sensor replacement, supporting better tool availability across planned maintenance and commissioning work.This is especially useful for service teams managing multiple sites. A more durable sensor platform helps improve workflow consistency and reduces the risk of delays during critical heating checks.
Why On-Site Printing Improves Reporting
Printed reports help engineers provide clear, immediate evidence of test results. This supports customer records, service history, internal quality checks, and facilities maintenance logs.For example, after commissioning a commercial boiler, an engineer can measure O₂, CO, NO, and calculated efficiency values, then print a report for the site file before leaving. This creates a professional record of appliance performance at the time of testing.
Built for Advanced Combustion Analysis
The testo 300LL Longlife with NO Sensor is suited to demanding professional applications where accuracy, durability, and documentation are essential.- Commercial boiler servicing
- Industrial burner commissioning
- NO emissions measurement
- High CO fault investigation
- Gas and oil-fired appliance testing
- Plant room maintenance and reporting




























