Testo 300+ Flue Gas Analyser
The Testo 300+ Flue Gas Analyser helps heating and HVAC engineers carry out fast flue gas checks on site. It supports work on domestic boilers and larger commercial systems. As a result, it gives clear readings for service, testing and fault finding.
A large 5 inch smart touch display keeps key values easy to read. The screen shows results clearly, so users do not need to scroll during normal checks. In addition, the layout feels similar to a smartphone, which helps reduce time spent learning the unit.
Clear testing for daily service work
For gas analysis, the unit uses electrochemical sensors for O2 and CO with H2 compensation. It also calculates CO2 from O2 and measures flue gas loss, efficiency, draught, pressure and temperature. Therefore, the Testo 300+ Flue Gas Analyser gives engineers a wide set of data from one tool.
Users can add an NO sensor when nitric oxide measurement is needed. This also allows NOlow measurement for low range nitric oxide checks. Meanwhile, dilution support extends the CO measurement range up to 30,000 ppm where suitable.
Smart connection and field ready design
Testo Smart Probes and the Testo Smart App support wireless use. Engineers can measure up to four extra parameters and view them on the display at the same time. They can also use the app to view readings remotely, control the instrument and share reports quickly from a phone or tablet.
Built for daily use, the Testo 300+ Flue Gas Analyser has a robust casing, scratch resistant touch screen and magnetic holder. Its rechargeable battery gives up to 10 hours of use, which helps during longer site visits. In addition, standby mode lets the instrument get ready to measure without long waiting times.
Key Features
- Suitable for domestic boiler and commercial HVAC flue gas checks
- Smart touch operation with a 5 inch high definition display
- Electrochemical O2 and CO sensors support accurate gas testing
- CO measurement includes H2 compensation for improved reliability
- CO2 is digitally calculated from the O2 measurement
- Efficiency and flue gas loss values can be shown during analysis
- Optional NO sensor supports nitric oxide and NOlow measurement
- Compatible with Testo Smart Probes for extra wireless readings
- Supports up to four simultaneous Smart Probe measurements
- Works with the Testo Smart App for remote viewing and reports
- Integrated Bluetooth interface supports fast on-site connection
- Magnetic holder allows hands free use during measurements
- Scratch resistant touch screen helps protect the display in daily use
- Standby mode reduces waiting time before measurement work starts
- Memory stores up to 1 million measuring values
Technical Specifications
| Product name | Testo 300+ Flue Gas Analyser |
| Main application | Flue gas analysis for heating and HVAC service work |
| O2 measurement range | 0 to 21 vol. % |
| CO measurement with H2 compensation | 0 to 8,000 ppm |
| CO measurement with H2 compensation and dilution | 0 to 30,000 ppm |
| COlow measurement with H2 compensation | 0 to 500 ppm |
| NO measurement range | 0 to 3,000 ppm |
| NOlow measurement range | 0 to 300 ppm |
| Efficiency testing range | 0 to 120% |
| Flue gas loss range | 0 to 99.9% |
| CO2 determination | Digital calculation from O2, display range 0 to CO2 max. |
| Draught measurement | -9.99 to +40 hPa |
| 4 Pa measurement | -50 to +50 Pa, for instruments with dilution |
| Pressure measurement | -100 to +200 hPa |
| Instrument temperature range | -40 to +1200°C |
| Ambient CO with internal or flue gas probe | 0 to 2,000 ppm |
| Ambient CO with external CO probe | 0 to 500 ppm |
| Storage temperature | -20 to +50°C |
| Operating temperature | -5 to +45°C |
| Charging temperature | 0 to +45°C |
| Humidity application range | 15 to 90% RH, non-condensing |
| Power supply | Rechargeable battery and USB mains unit |
| Rechargeable battery life | 10 hours |
| Protection class | IP40 |
| System requirements | iOS 11.0 or newer, Android 6.0 or newer, mobile device with Bluetooth 4.0 |
| Wireless range | Up to 100 m with no obstructions |
| Testo BT Connector | Interface for connecting Testo Smart Probes to the measuring instrument |
| Memory | 1 million measuring values |
| Display | 5.0 inch touch display, HD 1280 x 720 pixels, IPS, 160k |
| Weight | Approximately 800 g |
| Dimensions | L 244 mm including probe connection, H 59 mm, W 98 mm |
| Certification | TÜV-tested and certified according to EN50379, Parts 1-3 |
| Warranty | Not specified in the supplied information |
| Manufacturer part code | Not specified in the supplied information |
What’s Included
- Testo 300+ Flue Gas Analyser
- Rechargeable battery
- USB mains unit
Meta Description
Testo 300+ Flue Gas Analyser with O2, CO, CO2, draught, pressure, temperature, Bluetooth and Smart Probe support.
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