testo 300 Residential and Commercial Combustion Analyzer

Impressive measuring technology and quality

O2 sensor and CO sensor up to 4,000 ppm
testo Bluetooth^® Connector.
Longer sensor service life thanks to automatic sensor protection
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 combustion 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 WiFi (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 right away: in standby mode, the Next-Gen testo 300 is ready to measure at the touch of a button. Use it right away with the next customer – because you no longer need to wait for the end of the zeroing phase

*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 combustion analyzer is capable of being used for one week
Integrated, extra-strong magnets for easy fixing during the measuring process

Measuring range	-40° to 2192 °F / -40 to +1200 °C
Accuracy	±0.5 % of mv (Remaining Range) ±0.9 °F (32.0° to 212.0 °F) / ±0.5 °C (0.0 to +100.0 °C)
Resolution	±1 °F (Remaining Range) / 1 °C (Remaining Range) 0.1 °F (-40° to 1831.8 °F) / 0.1 °C (-40 to +999.9 °C)

Measuring range

-40° to 2192 °F / -40 to +1200 °C

Accuracy

±0.5 % of mv (Remaining Range)

±0.9 °F (32.0° to 212.0 °F) / ±0.5 °C (0.0 to +100.0 °C)

Resolution

±1 °F (Remaining Range) / 1 °C (Remaining Range)

0.1 °F (-40° to 1831.8 °F) / 0.1 °C (-40 to +999.9 °C)

Measuring range	-40 to +80 InH₂O / -100 to +200 hPa
Accuracy	±1.5 % of mv (+40.0 to +80 InH₂O) / ±1.5 % of mv (+100.1 to +200 hPa) ±1 % of mv (+20.0 to +40.0 InH₂O) / ±1 % of mv (+50.1 to +100.0 hPa) ±0.2 InH₂O (0 to +20.0 InH₂O) / ±0.5 hPa (0 to +50.0 hPa)
Resolution	0.00 InH₂O / 0.01 hPa

Measuring range

-40 to +80 InH₂O / -100 to +200 hPa

Accuracy

±1.5 % of mv (+40.0 to +80 InH₂O) / ±1.5 % of mv (+100.1 to +200 hPa)

±1 % of mv (+20.0 to +40.0 InH₂O) / ±1 % of mv (+50.1 to +100.0 hPa)

±0.2 InH₂O (0 to +20.0 InH₂O) / ±0.5 hPa (0 to +50.0 hPa)

Resolution

0.00 InH₂O / 0.01 hPa

Measuring range	0 to 21 Vol.%
Accuracy	±0.2 Vol.%
Resolution	0.1 Vol.%

Measuring range

0 to 21 Vol.%

Accuracy

±0.2 Vol.%

Resolution

0.1 Vol.%

Measuring range	-4.00 to +16 InH₂O / -9.99 to +40 hPa
Accuracy	±0.002 InH₂O (+0 to +0.0 InH₂O) / ±0.005 hPa (+0 to +0.1 hPa) ±0.01 InH₂O (+0.0 to +1.20 InH₂O) / ±0.02 hPa (+0.1 to +3.00 hPa) ±1.5 % of mv (1.20 to +16 InH₂O) / ±1.5 % of mv (3.01 to +40 hPa)
Resolution	0.000 InH₂O (0 to 0.0 InH₂O) / 0.001 hPa (0 to 0.1 hPa) 0.00 InH₂O (Remaining Range) / 0.01 hPa (Remaining Range)

Measuring range

-4.00 to +16 InH₂O / -9.99 to +40 hPa

Accuracy

±0.002 InH₂O (+0 to +0.0 InH₂O) / ±0.005 hPa (+0 to +0.1 hPa)

±0.01 InH₂O (+0.0 to +1.20 InH₂O) / ±0.02 hPa (+0.1 to +3.00 hPa)

±1.5 % of mv (1.20 to +16 InH₂O) / ±1.5 % of mv (3.01 to +40 hPa)

Resolution

0.000 InH₂O (0 to 0.0 InH₂O) / 0.001 hPa (0 to 0.1 hPa)

0.00 InH₂O (Remaining Range) / 0.01 hPa (Remaining Range)

Measuring range	0 to 120 %
Resolution	0.1 %

Measuring range

0 to 120 %

Resolution

0.1 %

Measuring range	0 to 99.9 %
Resolution	0.1 %

Measuring range

0 to 99.9 %

Resolution

0.1 %

Measuring range	Display range 0 to CO₂ max
Accuracy	±0.2 Vol.%
Resolution	0.1 Vol.%

Measuring range

Display range 0 to CO₂ max

Accuracy

±0.2 Vol.%

Resolution

0.1 Vol.%

Measuring range	0 to 4000 ppm
Accuracy	±5 % of mv (401 to 2000 ppm) ±10 % of mv (2001 to 4000 ppm) ±20 ppm (0 to 400 ppm)
Resolution	1 ppm

Measuring range

0 to 4000 ppm

Accuracy

±5 % of mv (401 to 2000 ppm)

±10 % of mv (2001 to 4000 ppm)

±20 ppm (0 to 400 ppm)

Resolution

1 ppm

Measuring range	0 to 2000 ppm
Accuracy	±10 % of mv (101 to 2000 ppm) ±10 ppm (0 to 100 ppm)
Resolution	1 ppm

Measuring range

0 to 2000 ppm

Accuracy

±10 % of mv (101 to 2000 ppm)

±10 ppm (0 to 100 ppm)

Resolution

1 ppm

Operating humidity	15 to 90 %rH non-condensing
Weight	approximately 28.2 oz. / approximately 800 g
Dimensions	9.6 (including probe connection) x 3.9 x 2.3 in. (LxWxH) / 244 (including probe connection) x 98 x 59 mm (LxWxH)
Operating temperature	23° to 113 °F / -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	https://www.testo.com/guarantee
Authorizations	TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) EN 50379, Parts 1-3
Guarantee	Gas sensors (O₂, CO) 24 months; rechargeable battery: 12 months; Thermocouple 12 months
Memory	1,000,000 measuring values
Battery life	10 h
Storage battery type	Lithium ion battery
Storage temperature	-4° to 122 °F / -20 to +50 °C
Charging temperature	32° to 113 °F / 0 to +45 °C

Operating humidity

15 to 90 %rH non-condensing

Weight

approximately 28.2 oz. / approximately 800 g

Dimensions

9.6 (including probe connection) x 3.9 x 2.3 in. (LxWxH) / 244 (including probe connection) x 98 x 59 mm (LxWxH)

Operating temperature

23° to 113 °F / -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

https://www.testo.com/guarantee

Authorizations

TÜV-tested according to 1st German Federal Immission Control Ordinance (BImSchV) EN 50379, Parts 1-3

Guarantee

Gas sensors (O₂, CO) 24 months; rechargeable battery: 12 months; Thermocouple 12 months

Memory

1,000,000 measuring values

Battery life

10 h

Storage battery type

Lithium ion battery

Storage temperature

-4° to 122 °F / -20 to +50 °C

Charging temperature

32° to 113 °F / 0 to +45 °C

Measuring Range	-0 to +0 InH₂O / -50 to +50 Pa
Accuracy	±3 % of mv (Remaining Range) ±0.0 InH₂O (< 0 InH₂O) / ±0.3 Pa (< 10 Pa)
Resolution	0.0 InH₂O / 0.1 Pa

Measuring Range

-0 to +0 InH₂O / -50 to +50 Pa

Accuracy

±3 % of mv (Remaining Range)

±0.0 InH₂O (< 0 InH₂O) / ±0.3 Pa (< 10 Pa)

Resolution

0.0 InH₂O / 0.1 Pa

Diameter probe shaft	0.236 in. / 6 mm
Cable length	4.921 ft. / 1.5 m
Length probe shaft	11.811 in. / 300 mm
Product colour	Black
Temperature maximum	932 °F / 500 °C
Diameter	0.2 in. / 6 mm
Weight	12.84 oz. / 364 g
Test Fußnote

Diameter probe shaft

0.236 in. / 6 mm

Cable length

4.921 ft. / 1.5 m

Length probe shaft

11.811 in. / 300 mm

Product colour

Black

Temperature maximum

932 °F / 500 °C

Diameter

0.2 in. / 6 mm

Weight

12.84 oz. / 364 g

Test Fußnote

System requirements	Windows 7; Windows 8; Windows® 10

System requirements

Windows 7; Windows 8; Windows® 10

Weight	49.4 oz. / 1400 g
Dimensions	10 x 20 x 5 in. ((LxWxH)) / 256 x 516 x 135 mm ((LxWxH))
Product colour	Black

Weight

49.4 oz. / 1400 g

Dimensions

10 x 20 x 5 in. ((LxWxH)) / 256 x 516 x 135 mm ((LxWxH))

Product colour

Black

Weight	5.08 oz. / 144 g
Dimensions	3.3 x 2.2 x 3.5 in. LxWxH / 85 x 55 x 90 mm LxWxH
Product colour	Black
Cable length	6.562 ft. / 2 m
Power supply	230 V AC / 5 V DC (2 A), micro USB, for the use in USA, CA, AU, Europe, UK, CN, Korea

Weight

5.08 oz. / 144 g

Dimensions

3.3 x 2.2 x 3.5 in. LxWxH / 85 x 55 x 90 mm LxWxH

Product colour

Black

Cable length

6.562 ft. / 2 m

Power supply

230 V AC / 5 V DC (2 A), micro USB, for the use in USA, CA, AU, Europe, UK, CN, Korea

Battery life	None, operated via testo 300
Connection	TUC 1 or TUC 2
Radio range	328.08 ft. / 100 m
compatible with	testo 510i, testo 115i, testo 915i

Battery life

None, operated via testo 300

Connection

TUC 1 or TUC 2

Radio range

328.08 ft. / 100 m

compatible with

testo 510i, testo 115i, testo 915i

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O₂ and CO 0-4,000) with Bluetooth^® connector.

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O₂ and CO 0-4,000) with Bluetooth^® connector.

Temperature - Type K TC

Differential Pressure

Flue gas O₂

Flue Gas Draft

Efficiency (calculated)

Flue Gas loss (calculated)

Flue Gas CO₂ calculation (calculated from O₂)

Flue gas CO (without H₂-compensation)

Ambient CO

General technical data

Differential Pressure 4 Pa measurement - Piezoresistive

General technical data

General technical data

General technical data

General technical data

General technical data

CO probes

Flue gas probes

Further probes

Temperature probes

Accessories

Flue gas measurement on heating systems

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O2 and CO 0-4,000) with Bluetooth® connector.

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O2 and CO 0-4,000) with Bluetooth® connector.

Temperature - Type K TC

Differential Pressure

Flue gas O₂

Flue Gas Draft

Efficiency (calculated)

Flue Gas loss (calculated)

Flue Gas CO₂ calculation (calculated from O₂)

Flue gas CO (without H₂-compensation)

Ambient CO

General technical data

Differential Pressure 4 Pa measurement - Piezoresistive

General technical data

General technical data

General technical data

General technical data

General technical data

CO probes

Flue gas probes

Further probes

Temperature probes

Accessories

Flue gas measurement on heating systems

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O₂ and CO 0-4,000) with Bluetooth^® connector.

Next-Gen testo 300 - Smoke Edition Combustion Analyzer Kit (w/ O₂ and CO 0-4,000) with Bluetooth^® connector.