Testo 310 (2nd Gen) Flue Gas Analyser – Standard Kit
Smart, connected combustion testing with the testo Flue Gas Analyser you can rely on
If you need a dependable, easy-to-use testo Flue Gas Analyser, the testo 310 is an excellent choice. It combines essential measurement functions, modern connectivity, and robust design.
The testo 310 (2nd Gen) Flue Gas Analyser is a compact, high-performance solution for engineers carrying out combustion checks on gas and oil boilers. Designed for speed, accuracy, and ease of use, the testo 310 delivers everything you need for efficient diagnostics in one dependable tool.
As part of the trusted testo Flue Gas Analyser range, this model combines fast start-up, Bluetooth connectivity, and intuitive operation - making it a valuable addition to any engineer’s tool kit and ideal for everyday servicing, commissioning, and safety inspections.

Why Choose the Testo 310 Flue Gas Analyser?
- Fast 30-second start-up for minimal downtime
- Reliable gas measurement and combustion analysis in one device
- Bluetooth connectivity for app-based reporting
- Clear colour display for easy on-site readings
- EN 50379-1 & 3 compliant testo Flue Gas Analyser
- Long-lasting rechargeable battery for full-day use
The testo 310 is built to support accurate measurement on heating systems, helping engineers meet compliance requirements while improving system efficiency.
✔ Complete Combustion Analysis with the Testo 310
The testo Flue Gas Analyser provides all essential readings needed for professional diagnostics. With the testo 310, you can perform:
✔ Flue Gas Analysis
Accurate O₂ and CO readings with automatic efficiency and flue gas loss calculations
✔ Draught Testing
Reliable measurement of chimney performance and airflow
✔ Ambient CO Monitoring
Essential safety checks for indoor environments
✔ Pressure Testing
Measure gas flow and differential pressure with confidence
In addition, the testo 310 supports precise temperature measurement, ensuring a complete picture of system performance.
Smart Connectivity with the Testo Flue Gas Analyser
The standout feature of the testo 310 Flue Gas Analyser is its seamless integration with the Testo Smart App. This enhances how you capture and manage data:
- Monitor readings remotely via smartphone or tablet
- Generate instant PDF reports on-site
- Store and manage customer data digitally
- Combine results with compatible Testo Smart Probes
This makes the testo 310 not just a measurement tool, but a fully connected workflow solution.
Built for Everyday Use
Engineered for durability and efficiency, the testo Flue Gas Analyser is designed to perform in demanding environments. The testo 310 includes:
- 30-second sensor zeroing for rapid deployment
- Integrated condensate trap for easy maintenance
- Replaceable filters to protect internal sensors
- Rechargeable battery delivering over 8 hours of operation
The robust construction ensures the testo 310 Flue Gas Analyser can handle daily use on-site without compromise.
What comes with the Testo 310 Standard Kit?

A complete kit, ready to go:
- Testo 310 (2nd Gen) Flue Gas Analyser
- Calibration certificate
- Flue gas probe (180 mm with cone)
- Carry case
- Power supply and charging cable
- USB-C cable
- Silicone hose for pressure checks
- 5 x particle filters
Applications for the Testo 310 Flue Gas Analyser
The testo 310 is ideal for a wide range of heating and combustion tasks:
- Boiler servicing and commissioning
- Flue draught checks
- Carbon monoxide safety testing
- Gas pressure verification
- Efficiency and emissions analysis
Whether you’re working in domestic or light commercial settings, the testo Flue Gas Analyser delivers consistent and accurate results.
Testo 310 Specifications:
| Features | Measuring range | Accuracy ±1 digit | Resolution | Adjustment time t90 |
Temperature (flue gas) | 0 to +400 °C | ±1 °C (0 to +100 °C) ±1.5% of m. v. (>100 °C) | 0.1 °C | < 50 sec |
Temperature (ambient temperature) | -20 to +100.0 °C | ±1 °C | 0.1 °C | < 50 sec |
| Draught measurement | -20 to +20 hPa | ±0.02 hPa (-0.6 to +0.6 hPa) ±0.03 hPa (-3 to -0.6 hPa and +0.6 to +3 hPa) ±1.5% of m.v. (-20 to -3 hPa and +3 to +20 hPa) | 0.01 hPa | |
| Pressure measurement | -40 to +100 hPa | ±0.5 hPa (0 to 50 hPa) ±1% of m.v. (remaining measuring range) | 0.1 hPa | |
| O2 measurement | 0 to 21 vol.% | ±0.2 vol.% | 0.1 vol.% | 30 sec |
CO measurement (without H2 compensation) | 0 to 4000 ppm | ±20 ppm (0 to 400 ppm) ±5% of m.v. (401 to 2000 ppm) ±10% of m.v. (2001 to 4000 ppm) | 1 ppm | 60 sec |
Ambient CO measurement | 0 to 4000 ppm | ±20 ppm (0 to 400 ppm) ±5% of m.v. (401 to 2000 ppm) ±10% of m.v. (2001 to 4000 ppm) | 1 ppm | 60 sec |
Efficiency testing (Eta) | 0 to 120 % | - | 0.1% | - |
| Flue gas loss | 0 to 99.9% | - | 0.1% | - |
| Features | Details |
| General technical data | |
| Storage temperature | -20 to +50 °C |
| Operating temperature | -5 to +45 °C |
| Power supply | Rechargeable battery 1500 mAh, mains unit 5V/2A |
| Memory | Storage option also via the connection to the testo Smart App |
| Display | Graphic 7-line display |
| Weight with probe | Approx. 690 g |
| Dimensions | 203 x 83 x 46 mm |
| Battery life | > 8 h (pump on, 20 °C ambient temperature) |
| Humidity application range | 0 to 80 %RH |
| Additional specifications |
| Protection class | IP40 |
| BT range | 60 m (without obstruction) |
System requirements testo Smart App | Requires iOS 13.0 or newer; requires Android 8.0 or newer; requires mobile end device with Bluetooth 4.0 |
| Certification | according to DIN EN 50379-1, 3 |
Part of the Trusted Testo Range
The testo 310 sits within a wider portfolio of professional instruments, including the advanced testo 300 Flue Gas Analyser range, offering scalable solutions for engineers with more complex requirements.
Testo 0563 3107 Printer Kit

The Testo 0563 3107 Printer Kit enhances the standard testo 310 (2nd Gen) by adding a Bluetooth printer for instant, professional on-site documentation. Designed for engineers who need quick and reliable reporting, this kit allows you to print combustion test results immediately after measurement—ideal for compliance records and customer handovers. The printer kit includes everything from the standard kit plus the Bluetooth printer and paper, allowing you to generate instant, professional hard-copy reports on-site.
What extra comes with the Printer Kit?
- Bluetooth printer (for on-site printouts)
- Thermal paper for the printer