Stock Code
0633 3004 75

TESTO Longlife-Flue Gas Analyzer (O2, CO H2-compensated up to 8,000 ppm, NO) | TESTO 300
The testo 300 flue gas analyzer with Longlife sensors is ideal for heating engineers who carry out installation and maintenance work on heating systems several times a day. It combines decades of experience in measuring technology with contemporary Smart-Touch operation, robust construction and e-mailing of reports. The testo 300 enables easy measurement of flue gas, draught, pressure, ambient CO and differential temperature.

Your advantages
- Intuitive measurement menus and the fast-response Smart-Touch display ensure easy operation – as on your smartphone
- Including O2, CO H2-compensated sensor up to 8,000 ppm and NO sensor
- High-quality sensor technology with up to 6 years' service life
- Create documentation directly on site and e-mailing of reports
TESTO Longlife-Flue Gas Analyzer (O2, CO H2-compensated up to 8,000 ppm, NO) | TESTO 300 Description
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 Longlife flue gas analyzer with Smart-Touch operation – Features
Impressive measuring technology and quality
- O2, H2-compensated CO sensor up to 8,000 ppm and NO sensor
- Longer sensor service life thanks to automatic sensor protection
- For intensive daily use: high-quality Longlife sensors for O2 and CO with a service life of up to 6 years. That means at least one sensor replacement is saved in the course of a normal working life
- TÜV-tested according to first German Federal Immission Control Ordinance (BImSchV) and EN 50379, Parts 1-3
- Integrated fine pressure
- Manufacturer's warranty of up to 5 years on O2 and CO sensor with product registration – without a maintenance contract
- 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 and 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
Delivery Scope
testo 300 Longlife flue gas analyzer with O2, CO H2-compensated sensor up to 8,000 ppm, NO sensor, USB mains unit, testo Bluetooth Connector.
TESTO Longlife-Flue Gas Analyzer (O2, CO H2-compensated up to 8,000 ppm, NO) | TESTO 300 Technical Data
Temperature - TC Type K (NiCr-Ni)
Measuring range |
-40 to +1200 °C
|
---|---|
Accuracy |
±0.5 % of mv (Remaining Range)
±0.5 °C (0.0 to +100.0 °C)
|
Resolution |
1 °C (Remaining Range)
0.1 °C (-40 to +999.9 °C)
|
Differential Pressure - Piezoresistive
Measuring range |
-100 to +200 hPa
|
---|---|
Accuracy |
±1 % of mv (+50.1 to +100.0 hPa)
±0.5 hPa (0 to +50.0 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.%
|
Flue gas CO (with H₂-compensation)
Measuring range |
0 to 8000 ppm
|
---|---|
Accuracy |
±10 ppm or ±10 % of mv (0 to 200 ppm)
±10 % of mv (2001 to 8000 ppm)
±20 ppm or ±5 % of mv (201 to 2000 ppm)
|
Resolution |
1 ppm
|
Flue gas COlow (with H₂-compensation)
Measuring range |
0 to 500 ppm
|
---|---|
Accuracy |
±2 ppm (40 to +500 ppm)
±5 % of mv Remaining Range
|
Resolution |
0.1 ppm
|
Flue gas NO
Measuring range |
0 to 3000 ppm
|
---|---|
Accuracy |
±5 ppm (0 to 100 ppm)
±5 % of mv (101 to 2000 ppm)
±10 % of mv (2001 to 3000 ppm)
|
Resolution |
1 ppm
|
Flue gas loss (calculated)
Measuring range |
0 to 300 ppm
|
---|---|
Accuracy |
±5 % of mv (40 to 300 ppm)
±2 ppm (0 to +39.9 ppm)
|
Resolution |
0.1 ppm
|
Differential Pressure flue gas Draught - Piezoresistive
Measuring range |
-9.99 to +40 hPa
|
---|---|
Accuracy |
±0.02 hPa (0.1 to +3.00 hPa)
±1.5 % of mv (+3.01 to +40 hPa)
±0.005 hPa (0 to 0.1 hPa)
|
Resolution |
0.001 hPa (0 to 0.1 hPa)
0.01 hPa (Remaining Range)
|
General technical data
Operating humidity |
15 to 90 %RH non-condensing
|
---|---|
Weight |
approximately 800 g
|
Dimensions |
244 (including probe connection) x 98 x 59 mm (LxWxH)
|
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
|
Warranty conditions | |
Authorizations |
TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) EN 50379, Parts 1-3
|
Guarantee |
Gas sensors (O₂, CO) 48 months; NO, NOlow, COlow sensor 24 months; Thermocouple 12 months; rechargeable battery: 12 months
|
Memory |
1,000,000 measuring values
|
Storage battery type |
Lithium ion battery
|
Battery life |
10 h
|
Storage temperature |
-20 to +50 °C
|
Charging temperature |
0 to +45 °C
|
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.%
|
Ambient CO
Measuring range |
0 to 2000 ppm
|
---|---|
Accuracy |
±10 % of mv (101 to 2000 ppm)
±10 ppm (0 to 100 ppm)
|
Resolution |
1 ppm
|
TESTO Longlife-Flue Gas Analyzer (O2, CO H2-compensated up to 8,000 ppm, NO) | TESTO 300 Images


