

Includes: testo 300 flue gas analyzer, including O2 and CO sensor up to 4,000 ppm, mains unit, basic flue gas probe, spare dirt filters, EasyHeat software, instrument case.
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The testo 300 compact flue gas analyser is fully operated via the large touch display. You can see all the measuring values straight away without scrolling. The particularly scratch resistant screen in embedded in a robust plastic housing which remains reliable even in tough day-to-day working conditions.
Menus for the most important measurements are already stored in the testo 300 and reliably guide you through the relevant application. The testo 300 flue gas analyser isn’t hampered with slow waiting times or start-up phases, it is immediately ready to go at the touch of a button in standby mode. Documentation is dealt with just as quickly – reports can be created and sent directly on site.
Fitted with the ‘longlife’ cells, the testo 300 offers a 4 year warranty. There is also an optional NOx sensor available. The O2 sensor, fitted in all Longlife models, is extremely durable and an optional automatic dilution up to a maximum of 30,000 ppm CO protects the CO sensor.
FEATURES
Large scratch-resistant 5" HD display with smart-touch operation and replaceable protective film.
Stored, intuitive menus for all relevant measurements.
Optional: extremely durable O2 sensor and automatic dilution up to 30,000 ppm CO.
Ready to measure at the touch of a button in standby mode.
4 strong magnets with rubber coating for material friendly mounting.
E-mailing of reports directly on site, with integrated customer address book.
Professional Documentation
Create measurement protocols with all the information about readings, customers and heating systems directly on site, add comments to them, have the protocols confirmed by the customer’s signature and send the protocols. You can also store your company logo. All PDF reports with all the important information are also saved in the instrument, so that they are always to hand.
testo 300 Standard Kit | testo 300 Standard + Printer | testo 300 Advanced Kit | ||
Order Number | 0564 3002 70 | 0564 3002 71 | 0564 3002 81 | |
testo 300, including mains unit | O₂, CO 4,000 ppm. | O₂, CO 4,000 ppm. | O₂, CO 4,000 ppm. | |
Probe, including 10 spare filters | Compact flue gas probe (180 mm, Ø 6 mm). |
Compact flue gas probe (180 mm, Ø 6 mm). |
Compact flue gas probe (180 mm, Ø 6 mm). |
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Printer, including spare paper | ||||
testo EasyHeat PC software | ||||
Instrument bag | ||||
Pipe clamp probes for differential temperature | ||||
Pressure hose connection set | ||||
Warranty | 2 years. | 2 years. | 2 years. |
Temperature - TC Type K (NiCr-Ni) | |
Measuring range | -40 to +1200 °C. |
Accuracy | ±0.5 °C (0.0 to +100.0 °C) ±0.5 % of mv (Remaining Range). |
Resolution | 0.1 °C (-40 to +999.9 °C) 1 °C (Remaining Range). |
Differential Pressure - Piezoresistive | |
Measuring range | -100 to +200 hPa. |
Accuracy | ±0.5 hPa (0 to +50.0 hPa) ±1 % of mv (+50.1 to +100.0 hPa) ±1.5 % of mv (+100.1 to +200 hPa). |
Resolution | 0.01 hPa. |
Flue gas O₂ | |
Measuring range | 0 to 21 Vol.%. |
Accuracy | ±0.2 Vol.%. |
Resolution | 0.1 Vol.%. |
Differential Pressure flue gas Draught - Piezoresistive | |
Measuring range | -9.99 to +40 hPa. |
Accuracy | ±0.005 hPa (+0 to +0.1 hPa) ±0.02 hPa (+0.1 to +3.00 hPa) ±1.5 % of mv (3.01 to +40 hPa). |
Resolution | 0.001 hPa (0 to 0.1 hPa) 0.01 hPa (Remaining Range). |
Flue gas degree of effectivity, Eta (calculated) | |
Measuring range | 0 to 120 %. |
Resolution | 0.1 %. |
Flue gas loss (calculated) | |
Measuring range | 0 to 99.9 %. |
Resolution | 0.1 %. |
Flue gas CO₂ calculation (calculated from O₂) | |
Measuring range | Display range 0 to CO₂ max. |
Accuracy | ±0.2 Vol.%. |
Resolution | 0.1 Vol.%. |
Flue gas CO (without H₂-compensation) | |
Measuring range | 0 to 4000 ppm. |
Accuracy | ±20 ppm (0 to 400 ppm) ±5 % of mv (401 to 2000 ppm) ±10 % of mv (2001 to 4000 ppm). |
Resolution | 1 ppm. |
Ambient CO | |
Measuring range | 0 to 2000 ppm. |
Accuracy | ±10 ppm (0 to 100 ppm) ±10 % of mv (101 to 2000 ppm). |
Resolution | 1 ppm. |
General technical data | |
Operating humidity | 15 to 90 %RH non-condensing. |
Dimensions | 244 (including probe connection) x 98 x 59 L x W x H. |
Operating temperature | -5 to +45 °C. |
Protection class | IP40. |
Product colour | black/orange. |
Display type | 5.0" touch display, HD 1280*720 pixels, IPS (160 k). |
Power supply | Rechargeable battery, USB mains unit. |
Guarantee | Gas sensors (O₂, CO) 24 months; rechargeable battery: 12 months; Thermocouple 12 months. |
Authorisations | TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) EN 50379, Parts 1-3. |
Memory | 1,000,000 measuring values. |
Storage battery type | Lithium ion battery. |
Battery life | 10 h. |
Storage temperature | -20 to +50 °C. |
Weight | approximately 800 g. |
Charging temperature | 0 to +45 °C. |
Differential Pressure 4 Pa measurement - Piezoresistive | |
Measuring Range | -50 to +50 Pa. |
Accuracy | ±0.3 Pa (< 10 Pa) ±3 % of mv (Remaining Range). |
Resolution | 0.1 Pa. |