Testo 327-1 Flue Gas Analyser Advanced Kit
Built for boiler service work, the Testo 327-1 Flue Gas Analyser Advanced Kit helps engineers test flue gases with clear and steady results. It measures O2, CO and temperature, while it also calculates CO2 and boiler efficiency. As a result, users can complete key domestic checks with one practical kit.
This analyser suits daily work on domestic heating systems. It supports natural gas, propane, butane, kerosene and light or heavy oil, so it can be used across a wide range of jobs. In addition, the kit follows BS7967 and EN50379 standards for added confidence on site.
Designed for Fast Site Testing
Clear menu navigation makes the unit simple to use during busy service calls. A backlit multi-line display shows several readings at once, which helps users see results in poor light. The Testo 327-1 Flue Gas Analyser Advanced Kit also uses large rubber buttons for easy control.
Rear magnets allow the analyser to attach to boiler casing for hands-free use. This helps keep the unit safe and visible while readings are taken. Furthermore, the robust rubber casing and soft carry case help protect the analyser, probe and accessories during transport.
Advanced Kit Accessories
Extra accessories help this advanced kit handle more tasks. Users can complete let-by and tightness tests with the differential hose kit, while the temperature clamps measure flow and return temperatures. The included Testo Fast Printer also lets users print results when needed.
The design also improves safety. Automatic pump protection helps protect the CO sensor from overexposure up to 4,000 ppm. A rechargeable lithium ion battery provides up to five hours of use, making the Testo 327-1 Flue Gas Analyser Advanced Kit suitable for regular professional work.
Key Features
- Advanced kit for domestic boiler commissioning and service work
- Measures O2 CO temperature CO2 and boiler efficiency
- Supports draught readings during flue gas testing
- Suitable for natural gas propane butane kerosene and oil
- Backlit 4-line LCD shows multiple results at once
- Large rubber buttons support simple menu control
- Rear magnets allow attachment to boiler casing
- Robust rubber casing helps protect the analyser
- Soft carry case stores the analyser and accessories
- Automatic pump protection helps guard the CO sensor
- Differential hose kit supports let-by and tightness testing
- Temperature clamps support flow and return checks
- Included Testo Fast Printer provides printed results
- Rechargeable lithium ion battery supports portable work
- Calibration protocol supports traceable professional use
Technical Specifications
| Manufacturer | Testo |
| Product name | Testo 327-1 Flue Gas Analyser Advanced Kit |
| Manufacturer part code | 0563 3203 81 |
| Temperature range | -40 to +600°C |
| O2 range | 0 to 21 Vol.% |
| CO range | 0 to 4000 ppm |
| CO2 range | 0 to CO2 maximum |
| Draught range | ±40 mbar |
| Pressure range | -200 to +200 mbar |
| Efficiency measurement | 0 to 120% |
| Flue gas loss range | 0 to 99.9% |
| Sensors | O2 and CO |
| Display | 4-line LCD display with backlight |
| Battery type | Lithium ion rechargeable battery |
| Battery run time | Up to 5 hours continuous operation |
| CO sensor protection | Automatic pump shut-off for overexposure protection |
| CO over-range capability | 4,000 ppm range capability |
| Fuel types | Natural gas, propane, butane, kerosene and light or heavy oil |
| Testing functions | Flue gas analysis, let-by testing, tightness testing and ambient CO measurement |
| Temperature accessories | Temperature clamps for flow and return measurement |
| Printer | Testo Fast Printer included |
| Standards | BS7967 and EN50379 |
| Sensor warranty | 3 years |
Document Downloads
What’s Included
- Testo 327-1 analyser
- Flue gas probe
- Mains unit
- Differential hose kit
- Differential temperature kit
- Testo Fast Printer
- Carry case
- 12-month manufacturer calibration certificate









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