Testo 320 exhaust gas meter includes O2/CO measuring sensor

Advantages of the testo 320 exhaust gas meter

Analysis of exhaust gases on heating systems: The testo 320 is equipped with one O2 sensor and one CO sensor (without H2 compensation). CO measurement range up to 4,000 ppm. You need a probe with an integrated temperature sensor to measure exhaust gases (order option). Thanks to that, relevant emissions measurement parameters can be calculated such as: CO2 value, efficiency and exhaust gas loss. The testo 320 exhaust gas meter is also suitable for measuring smoke flow or pressure

Easy to change probe: You can order other probes and easily replace them depending on your flue gas analysis requirements (e.g. multi-hole probe, dual wall clearance probe, flexible flue gas probe)

Single pipe connection: in just one simple operation, all channels for flue gas measurement can be connected via the measuring head coupling securely (gas line, draft, temperature probe are integrated in the exhaust gas measuring head , ordering options)

Durable and long using time thanks to the Long-life Li-ion rechargeable battery

Magnet Integrated back of the machine allows the testo 320 to be attached to the metal surface of the burner/boiler quickly and easily

Condensate trap: Can be disassembled and cleaned easily

Features of the testo 320 exhaust gas meter

Exhaust gas measurement (focus on gas: combustion gas temperature, exhaust gas temperature, O2, CO and CO2 concentration, exhaust loss, gas/air ratio, efficiency)

Gas flow and static pressure (with optional connection hose set to order)

Differential temperature measurement to determine the difference between flow and return flow (with optional differential temperature kit)

Note: To be able to perform measurements, you need a compact or modular exhaust gas probe (Order).

Technical specifications of testo 320

O2 emissions
Measuring range	0 to 21 Vol.%
Accuracy	±0.2 Vol.%
Resolution	0.1 Vol.%
Response time t90	< 20 seconds

Differential exhaust pressure draft – Piezoresistive
Measuring range	-9.99 to +40 hPa
Accuracy	±0.02 hPa or ±5 % measured value (-0.50 to +0.60 hPa) ±0.03 hPa (+0.61 to +3.00 hPa) ±1.5 % measured value (+3.01 to +40.00 hPa)
Resolution	0.01 hPa

Differential exhaust pressure draft – Piezoresistive

Measuring range

-9.99 to +40 hPa

Accuracy

±0.02 hPa or ±5 % measured value (-0.50 to +0.60 hPa)

±0.03 hPa (+0.61 to +3.00 hPa)

±1.5 % measured value (+3.01 to +40.00 hPa)

Resolution

0.01 hPa

Temperature
Measuring range	-40 to +1200 °C
Accuracy	±0.5 °C (0 to +100.0 °C) ±0.5 % measured value (remaining measuring range)
Resolution	0.1 °C (-40 to +999.9 °C) 1 °C (> +1000 °C)

Temperature

Measuring range

-40 to +1200 °C

Accuracy

±0.5 °C (0 to +100.0 °C)

±0.5 % measured value (remaining measuring range)

Resolution

0.1 °C (-40 to +999.9 °C)

1 °C (> +1000 °C)

Performance, Eta (calculated)
Measuring range	0 to 120 %
Resolution	0,1 %

Exhaust gas loss (calculated)
Measuring range	0 to 99.9%
Resolution	0,1 %

CO2 gas (calculated from O2)
Measuring range	0 to maximum CO2 (Display range)
Accuracy	±0.2 Vol.%
Resolution	0.1 Vol.%
Response time t90	40 seconds

Pressure
Measuring range	0 to +300 hPa
Accuracy	±0.5 hPa (0.0 to 50.0 hPa) ±1 % measured value (50.1 to 100.0 hPa) ±1.5 % measured value (remaining measuring range)
Resolution	0.1 hPa

Pressure

Measuring range

0 to +300 hPa

Accuracy

±0.5 hPa (0.0 to 50.0 hPa)

±1 % measured value (50.1 to 100.0 hPa)

±1.5 % measured value (remaining measuring range)

Resolution

0.1 hPa

CO gas (without H2 compensation)
Measuring range	0 to 4000 ppm
Accuracy	±20 ppm (0 to 400 ppm) ±5 % measured value (401 to 2000 ppm) ±10 % measured value (2001 to 4000 ppm)
Resolution	1 ppm
Response time t90	< 60 seconds

CO surrounding
Measuring range	0 to 4000 ppm
Accuracy	±20 ppm (0 to 400 ppm) ±5 % measured value (401 to 2000 ppm) ±10 % measured value (2001 to 4000 ppm)
Resolution	1 ppm
Measurement cycle	< 60 seconds

General specifications
Weight	573 g
Size	240x85x65mm
Operating temperature	-5 to +45 °C
Protection level	IP40
Resolution	240 x 320 pixels
Display screen	Display color graphics
Power supply	Battery: 3.7 V / 2,400 mAh; Power supply: 5 V / 1 A
Storage temperatures	-20 to +50 °C