testo 300 - advanced kit

  • Fast and easy to operate: intuitive measurement menus and fast-response Smart-Touch display
  • Including O2 and CO sensor up to 4,000 ppm
  • Large 5-inch HD display – see all the system's measuring values at a glance
  • In the kit: testo 300 flue gas analyzer, including O2 and CO sensor up to 4,000 ppm, mains unit, basic flue gas probe, spare dirt filters, Bluetooth® printer, 2 x clamp probes (NTC), pressure connection kit, EasyHeat software, instrument bag

testo 0564 3002 81

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With this kit, you will be equipped for the most important measurements involving heating systems: the EN 50379, Parts 1-3 compliant testo 300 flue gas analyser is supplied with O2 and CO sensor up to 4,000 ppm, basic flue gas probe, Bluetooth® printer, 2 x clamp probes with NTC temperature sensor, pressure connection kit, instrument bag and practical accessories

Truly smart flue gas measurement on heating systems with the testo 300 flue gas analyzer. High-quality sensors, intuitive operation with smart-touch technology and smart features, such as efficient documentation and e-mailing of reports, will make your day-to-day work easier.

testo 300 flue gas analyzer with smart-touch operation – Features

Impressive measuring technology and quality

  • O2 sensor and CO sensor up to 4,000 ppm
  • Longer sensor service life thanks to automatic sensor protection
  • TÜV-tested according to first German Federal Immission Control Ordinance (BImSchV) and EN 50379, Parts 1-3
  • Integrated fine pressure
  • Versatile probes and fast probe changes: take advantage of quick-change probes and the multi-functional handle for attaching a variety of probe shafts (each available to order separately). You can for instance use longer probe shafts for flue gas pipes with larger diameters or flexible probes for difficult-to-access measuring points
  • Optionally available probes and accessories for further measuring tasks, such as gas flow pressure measurement, gas pipe testing, differential temperature measurement and ambient CO measurement

Smart, intuitive, efficient: easy operation in day-to-day work

  • Smart-touch display for intuitive operation of the flue gas analyzer: the display responds without delay – just as easy as on your smartphone
  • Get the measurement result faster: clearly structured measurement menus for all relevant measurements
  • Create documentation (including measuring value, measuring location, customer data) easily on site
  • Save PDF measurement reports directly in the instrument and always have them available
  • Signature function: your customer can sign measurement reports directly on the instrument
  • E-mail measurement reports directly to the office or to customers via WLAN (hotspot)
  • Large 5-inch HD display – enables you to see all the system's parameters immediately
  • Testo interface function for direct data transfer of measuring values to industry/customer-specific software*
  • Ready to use straight away: in standby mode, the testo 300 is ready to measure at the touch of a button. Use it straight away with the next customer – because you no longer need to wait for the end of the zeroing phase
  • Integrated Bluetooth® interface: immediate printout of the measuring values on site with the appropriate printer

*Note: the manufacturer has to integrate an interface into the industry software to use the function


Other advantages

  • 10-hour rechargeable battery life: an average measurement period of 2 hours means the flue gas analyzer is capable of being used for one week
  • Integrated, extra-strong magnets for easy fixing during the measuring process


  • testo 300 flue gas analyzer
  • O2 and CO sensor up to 4,000 ppm
  • USB mains unit
  • 2 Clamp Probes NTC
  • Pressure Connection Kit
  • testo Bluetooth® printer
  • Thermal Printer Paper
  • easyheat PC Software
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.

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