Testo 327-1 Advanced Kit with Gas Leak Detector
The Testo 327-1 Advanced Kit with Gas Leak Detector gives heating engineers a reliable way to test flue gases, pressure and gas leaks in one compact system. It is designed for work on natural gas, LPG, kerosene and wood pellet systems. The unit also includes an infrared printer, which allows fast printouts on site during service checks.
Fast controls and a clear 4-line LCD display help users complete checks with less delay. In addition, the rechargeable battery supports long working periods in the field. The Testo 327-1 Advanced Kit with Gas Leak Detector also includes a built-in condensate trap and easy probe connection for smooth daily use.
Reliable Gas Analysis
This analyser measures O2 and CO levels during combustion testing and supports differential temperature checks at the same time. Parallel draught measurement improves testing speed and reduces setup time. As a result, engineers can complete service work more efficiently while keeping readings clear and accurate.
The included gas leak detector identifies methane, propane, butane and hydrogen with both visual and audible alarms. This helps users react quickly during safety inspections. Testo 327-1 Advanced Kit with Gas Leak Detector also supports gas pressure testing for wider heating system diagnostics.
Built for Daily Service Work
A durable carry case and shoulder strap make transport easier between jobs. The analyser is also printer compatible, allowing instant hard copy reports when needed. Furthermore, the rechargeable battery and compact probe design support regular use in domestic and commercial environments.
Testo 327-1 Advanced Kit with Gas Leak Detector is supplied with a full advanced accessory package for complete flue gas testing. The unit includes differential temperature and hose kits for added flexibility during servicing tasks. With a 3 year analyser warranty and 3 year sensor warranty, it provides dependable long-term performance for professional engineers.
Key Features
- Measures O2 and CO during flue gas analysis
- Integrated gas leak detector for methane and propane
- Supports gas pressure testing applications
- Parallel draught measurement during combustion testing
- Rechargeable battery with up to 5 hour operating life
- Infrared printer included for instant report printing
- 4-line LCD display with LED display light
- Built-in condensate trap for safer operation
- Fast single plug probe connection system
- Separate differential temperature measurement function
- Undiluted CO measurement capability
- Designed for natural gas, LPG and kerosene systems
- Suitable for wood pellet heating applications
- IP40 rated housing for service environments
- 3 year analyser warranty included
- 3 year sensor warranty included
Technical Specifications
| Manufacturer | Testo |
| Product name | Testo 327-1 Advanced Kit with Gas Leak Detector |
| Manufacturer part code | 300563 2327 |
| Sensor types | O2 and CO |
| CO measurement range | 0 to 4000 ppm |
| CO2 range | 0 to CO2 max |
| O2 measurement range | 0 to 21% |
| Temperature measurement range | -40°C to 600°C |
| Gas pressure testing | Supported |
| Differential temperature measurement | Included |
| Differential pressure measurement | Supported |
| Draught measurement | Parallel to flue gas measurement |
| Display type | 4-line LCD display |
| Display light | LED backlight |
| Infrared printer compatibility | Yes |
| Integrated gas leak detector | Yes |
| Detectable gases | Methane, propane, butane and hydrogen |
| Gas leak alarm type | Visual traffic light indicator and audible alarm |
| Ambient CO measurement | Using flue gas probe |
| Dual wall measurement | Supported and storable |
| Undiluted CO measurement | Supported |
| Probe connection | Single plug fast connection |
| Flue gas probe size | 180 mm x 6 mm diameter |
| Battery type | Rechargeable 1200 mA battery |
| Battery runtime | Approx. 5 hours |
| Ingress protection | IP40 |
| Fuel compatibility | Natural gas, LPG, kerosene, heavy oil, light oil and wood pellets |
| Standards | EN 50379 Part 2 for O2, °C and hPa |
| Additional standards | EN 50379 Part 3 for CO |
| Sensor warranty | 3 years |
| Instrument warranty | 2 years |
| Analyser warranty | 3 years |
Comparison Table
| Feature | Testo 310 2nd Gen | Testo 327-1 | Testo 300+ |
| Sensors | O2, CO | O2, CO | O2, CO, NO optional |
| CO range | 0 to 4000 ppm | 0 to 4000 ppm | 0 to 8000 ppm |
| NO measurement | No | No | Yes optional |
| Gas pressure testing | Yes | Yes | Yes |
| Flow and return temperature | No | Yes | Yes |
| Draught measurement | Separate measurement | Parallel measurement | Parallel measurement |
| Temperature range | 0°C to 400°C | -40°C to 600°C | -40°C to 1200°C |
| Printer compatible | Yes | Yes | Yes |
| Direct report sending | No | No | Yes |
| Smart app connectivity | Yes | No | Yes |
| Display | Graphic 7-line display | 4-line LCD display | 5 inch HD colour display |
| Touchscreen | No | No | Yes |
| Sensor warranty | 2 years | 3 years | 3 years |
| Instrument warranty | 2 years | 2 years | 2 years |
Document Downloads
What’s Included
- Testo 327-1 Flue Gas Analyser
- Gas leak detector
- Infrared printer
- Differential temperature kit
- Differential hose kit
- 180 mm flue gas probe
- Soft carry case
- Shoulder strap
- Mains unit



