Testo 327-1 Advanced Kit with Gas Leak Detector and CPA1 Kit
The Testo 327-1 Advanced Kit with Gas Leak Detector and CPA1 Kit gives heating engineers a reliable way to carry out flue gas testing and appliance checks. It measures combustion efficiency, oxygen, carbon monoxide and carbon dioxide values with clear and accurate readings. In addition, the kit supports natural gas, LPG, kerosene and wood pellet systems for flexible daily use.
Built for demanding service work, the analyser includes a rechargeable battery with a typical operating life of more than five hours. The compact housing and shoulder strap make transport easier between jobs. Furthermore, the infrared printer allows quick printouts while on site, helping engineers complete reports without delay.
Designed for Everyday Heating Work
Easy menu controls and a four-line display help users move through readings quickly and clearly. The Testo 327-1 Advanced Kit with Gas Leak Detector and CPA1 Kit also includes differential temperature and pressure measurement functions for wider testing capability. As a result, engineers can carry out several important checks using one practical instrument.
Alongside the analyser, the included gas leak detector identifies methane, propane, butane and hydrogen leaks. Audible alerts and traffic light indicators provide clear warnings in busy working areas. The CPA1 kit also supports testing on flueless combustion appliances such as grills and cookers, helping engineers meet BS7967:2005 requirements.
Reliable Measurement Performance
Accurate readings are supported by a Type K probe with a measurement range from -40 °C to 600 °C. The draught probe measures up to ±40 hPa, while the electrochemical CO sensor measures from 0 to 4000 ppm. Because of this wide capability, the unit suits servicing, commissioning and fault finding across many appliance types.
Testo 327-1 Advanced Kit with Gas Leak Detector and CPA1 Kit is independently tested to EN 50379 and certified to BS7967 standards. The analyser includes a built-in condensate trap and IP40 protection for dependable operation during regular field use. In addition, the supplied carry case keeps all accessories organised and protected between visits.
Key Features
- Compatible with natural gas, LPG, kerosene and wood pellets
- Measures oxygen, carbon monoxide and carbon dioxide levels
- Includes CPA1 probe set for flueless appliance testing
- Gas leak detector identifies methane, propane and hydrogen
- Infrared printer provides fast onsite printouts
- Rechargeable battery offers more than five hours of use
- Four-line segment display improves reading visibility
- Differential pressure and draught measurement included
- Traffic light warning system on gas leak detector
- Built-in condensate trap supports cleaner operation
- Easy menu navigation for quicker setup and testing
- Separate air temperature measurement function included
- Ambient CO measurement available using flue gas probe
- Supports six to eight fuels depending on country setup
- Independently certified to BS7967 standards
- Three year analyser and sensor warranty included
Technical Specifications
| Manufacturer | Testo |
| Product name | Testo 327-1 Advanced Kit with Gas Leak Detector and CPA1 Kit |
| Manufacturer part code | 300563 4327 |
| Sensor types | O2 and CO electrochemical sensors |
| CO measurement range | 0 to 4000 ppm |
| CO resolution | 1 ppm |
| CO accuracy | ±20 ppm from 0 to 400 ppm |
| CO accuracy continued | ±5% of measured value from 401 to 1000 ppm |
| CO high range accuracy | ±10% of measured value from 1001 to 4000 ppm |
| Temperature probe type | Type K |
| Temperature measurement range | -40 °C to 600 °C |
| Temperature resolution | 0.1 °C |
| Temperature accuracy | ±0.5 °C from 0 to 99.9 °C |
| High temperature accuracy | ±0.5% of measured value from 100 to 600 °C |
| Draught measurement range | ±40 hPa |
| Draught accuracy | ±0.02 hPa from -0.50 to +0.60 hPa |
| Additional draught accuracy | ±0.03 hPa from +0.61 to +3.00 hPa |
| Operating temperature | -5 °C to 45 °C |
| Storage temperature | -20 °C to 50 °C |
| Battery type | Rechargeable 1200 mA battery |
| Battery life | More than 5 hours typical use |
| Display type | 4-line LCD display |
| Ingress protection | IP40 |
| Dimensions | 216 x 68 x 47 mm |
| Weight | 500 g |
| Standards | EN 50379 Part 2 and Part 3 |
| Certification | BS7967 compliant |
| Printer compatibility | Infrared printer supported |
| Warranty | 3 year analyser and sensor warranty |
Comparison Table
| 310 (2nd Gen) | 327-1 | 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 | Optional |
| Gas pressure testing | Yes | Yes | Yes |
| Flow and return temperature | No | Yes | Yes |
| Draught measurement | Separate | Parallel | Parallel |
| Temperature range | 0 °C to 400 °C | -40 °C to 600 °C | -40 °C to 1200 °C |
| Printer compatible | Yes | Yes | Yes |
| Bluetooth reporting | No | No | Yes |
| Display | Graphic 7-line | 4-line LCD | 5 inch HD colour |
| Touchscreen | No | No | Yes |
| Sensor warranty | 2 years | 3 years | 3 years |
Document Downloads
What’s Included
- Testo 327-1 flue gas analyser
- Soft carry case
- 180 mm flue gas probe
- Mains unit
- Differential temperature kit
- Differential hose kit
- Infrared printer
- Shoulder strap
- Gas leak detector
- CPA1 probe set