Measuring oxygen from 0 to 21% by volume and CO up to 5000 ppm, this combustion analyzer kit calculates efficiency and flue gas loss and pairs with a smartphone app over Bluetooth. Furthermore, this kit includes a basic flue gas probe, a Bluetooth printer, spare particle filters, a carrying case, and adapters, making it ideal for HVAC/R professionals in their daily work.
Measuring oxygen from 0 to 21% by volume and CO up to 5000 ppm, this combustion analyzer kit calculates efficiency and flue gas loss and pairs with a smartphone app over Bluetooth. Furthermore, this kit includes a basic flue gas probe, a Bluetooth printer, spare particle filters, a carrying case, and adapters, making it ideal for HVAC/R professionals in their daily work.
The Testo 320 supports HVAC/R professionals in their daily work. With a wide range of systems, increasing time pressure and the need for efficient processes, reliable and easy-to-use measurement solutions are essential. By combining intuitive operation with connected systems, the Testo 320 helps simplify routine tasks and deliver consistent results.
With the Testo Smart App, measurements can be controlled, documented and reported directly on site – including remote control and fast reporting. With Testo Smart Connect, all measurement data is centrally managed in the cloud, connecting measurements, jobs and devices in one system and providing full transparency and easy access across teams and locations.
Designed for efficient daily operation, the Testo 320 delivers reliable performance with sensors developed by Testo for standard HVAC/R applications. The large 5.5" (13.97 cm) touchscreen provides a clear view of all measurement data at a glance, while streamlined workflows guide users step by step and ensure fast navigation and easy handling.
This combination of usability and efficiency reduces effort, minimizes errors and enables faster workflows. Parallel measurements allow multiple values to be captured simultaneously, further increasing efficiency in daily work. Long battery life and fast USB-C charging ensure uninterrupted operation throughout the working day – minimizing downtime and keeping workflows moving.
Features
Applications
| Sensors | O2 sensor: yes CO sensor: 5000 ppm H2 compensation (CO sensor): No NO sensor: Sold separately Zeroing in flue gas: No Testo sensors: No |
| O2 | Measuring range: 0 to 21 vol.% Accuracy: ±0.2 vol.% Resolution: 0.1 vol.% |
| CO | Measuring range: 0 to 5000 ppm (without H2 compensation) Accuracy: ±20 ppm: 0 to 400 ppm ±5% of m.v.: 401 to 2000 ppm ±10% of m.v.: 2001 to 5000 ppm Resolution: 1 ppm |
| Efficiency (η) | Measuring range: 0 to 120% Resolution: 0.1% |
| Flue Gas Loss | Measuring range: 0 to 99.9% Resolution: 0.1% |
| CO2 (Calculated from O2) | Display range: 0 to CO2 maximum Accuracy: ±0.2 vol.% Resolution: 0.1 vol.% |
| Draft | Measuring range: -0.29 to 1.18 inHg (-9.8 to 40 hPa) Accuracy: ±0.0001 inHg (±0.34 Pa): 0 to 0.003 inHg (0 to 10.2 Pa) ±0.00014 inHg (±0.47 Pa): 0.002 to 0.089 inHg (6.8 to 301 Pa) ±1.5% of m.v.: 0.089 to 1.181 inHg (3 to 40 hPa) Resolution: 0.00003 inHg (0.1 Pa): 0 to 0.003 inHg (0 to 10.2 Pa) 0.0003 inHg (1 Pa): remaining range |
| Pressure | Measuring range: -0.29 to 1.18 inHg (-9.8 to 40 hPa) Accuracy: ±0.014 inHg (±0.47 hPa): 0 to 1.476 inHg (0 to 50 hPa) ±1% of m.v.: 1.479 to 2.952 inHg (50.1 to 100 hPa) ±1.5% of m.v.: 2.955 to 5.905 inHg (100.1 to 200 hPa) Resolution: 0.0002 inHg (0.68 Pa) |
| Temperature (Instrument) | Measuring range: -40 to 2192°F (-40 to 1200°C) Accuracy: ±0.9°C: 32 to 212°F (0 to 100°C) ±0.5% of m.v.: remaining range Resolution: 0.18°F (0.1°C): -40 to 1,831.82°F (-40 to 999.9°C) 1.8°F (1°C): remaining range |
| Ambient CO | Internal/flue gas probe: 0 to 2000 ppm Accuracy: ±10 ppm: 0 to 100 ppm ±10% of m.v.: 101 to 2000 ppm Resolution: 1 ppm External with CO probe: 0 to 500 ppm Accuracy: ±3 ppm: 0 to 29 ppm ±10% of m.v.: 30 to 500 ppm Resolution: 1 ppm |
| Display | 5.5" (13.97 cm) IPS touchscreen, 1268 × 702 pixels |
| Memory | ≤1,000,000 readings |
| Wireless Connectivity | Wireless range: Up to 328' (100 m) with no obstructions Wireless probe connection: 4 Bluetooth® probes connectable: Smart Probes (°F, delta P), CO + CO2 probes |
| System Requirements | iOS ≥17 / Android ≥14; Bluetooth ≥4.2 |
| Power | Power supply: Rechargeable battery, USB mains unit Rechargeable battery life: 10 hours Quick charge (charge time / operating time): 20 min / ~60 min at 77°F (25°C) |
| Environmental Conditions | Operating temperature: 23 to 113°F (-5 to 45°C) Storage temperature: -4 to 122°F (-20 to 50°C) Charging temperature: 32 to 95°F (0 to 35°C) Humidity application range: 15 to 90% RH (non-condensing) |
| Protection Class | IP40 |
| Dimensions | 9 x 4 x 2" (22.86 x 10.16 x 5.08 cm), including probe connection (approximately) |
| Weight | Analyzer: 1.5 lbs (0.68 kg) approximately Kit: 7 lbs (3.2 kg) |
Click on a category to view a selection of compatible accessories with the Testo 320 Combustion Analyzer Kit with printer, O2, 0 to 5000 ppm CO.
| Sensors | O2 sensor: yes CO sensor: 5000 ppm H2 compensation (CO sensor): No NO sensor: Sold separately Zeroing in flue gas: No Testo sensors: No |
| O2 | Measuring range: 0 to 21 vol.% Accuracy: ±0.2 vol.% Resolution: 0.1 vol.% |
| CO | Measuring range: 0 to 5000 ppm (without H2 compensation) Accuracy: ±20 ppm: 0 to 400 ppm ±5% of m.v.: 401 to 2000 ppm ±10% of m.v.: 2001 to 5000 ppm Resolution: 1 ppm |
| Efficiency (η) | Measuring range: 0 to 120% Resolution: 0.1% |
| Flue Gas Loss | Measuring range: 0 to 99.9% Resolution: 0.1% |
| CO2 (Calculated from O2) | Display range: 0 to CO2 maximum Accuracy: ±0.2 vol.% Resolution: 0.1 vol.% |
| Draft | Measuring range: -0.29 to 1.18 inHg (-9.8 to 40 hPa) Accuracy: ±0.0001 inHg (±0.34 Pa): 0 to 0.003 inHg (0 to 10.2 Pa) ±0.00014 inHg (±0.47 Pa): 0.002 to 0.089 inHg (6.8 to 301 Pa) ±1.5% of m.v.: 0.089 to 1.181 inHg (3 to 40 hPa) Resolution: 0.00003 inHg (0.1 Pa): 0 to 0.003 inHg (0 to 10.2 Pa) 0.0003 inHg (1 Pa): remaining range |
| Pressure | Measuring range: -0.29 to 1.18 inHg (-9.8 to 40 hPa) Accuracy: ±0.014 inHg (±0.47 hPa): 0 to 1.476 inHg (0 to 50 hPa) ±1% of m.v.: 1.479 to 2.952 inHg (50.1 to 100 hPa) ±1.5% of m.v.: 2.955 to 5.905 inHg (100.1 to 200 hPa) Resolution: 0.0002 inHg (0.68 Pa) |
| Temperature (Instrument) | Measuring range: -40 to 2192°F (-40 to 1200°C) Accuracy: ±0.9°C: 32 to 212°F (0 to 100°C) ±0.5% of m.v.: remaining range Resolution: 0.18°F (0.1°C): -40 to 1,831.82°F (-40 to 999.9°C) 1.8°F (1°C): remaining range |
| Ambient CO | Internal/flue gas probe: 0 to 2000 ppm Accuracy: ±10 ppm: 0 to 100 ppm ±10% of m.v.: 101 to 2000 ppm Resolution: 1 ppm External with CO probe: 0 to 500 ppm Accuracy: ±3 ppm: 0 to 29 ppm ±10% of m.v.: 30 to 500 ppm Resolution: 1 ppm |
| Display | 5.5" (13.97 cm) IPS touchscreen, 1268 × 702 pixels |
| Memory | ≤1,000,000 readings |
| Wireless Connectivity | Wireless range: Up to 328' (100 m) with no obstructions Wireless probe connection: 4 Bluetooth® probes connectable: Smart Probes (°F, delta P), CO + CO2 probes |
| System Requirements | iOS ≥17 / Android ≥14; Bluetooth ≥4.2 |
| Power | Power supply: Rechargeable battery, USB mains unit Rechargeable battery life: 10 hours Quick charge (charge time / operating time): 20 min / ~60 min at 77°F (25°C) |
| Environmental Conditions | Operating temperature: 23 to 113°F (-5 to 45°C) Storage temperature: -4 to 122°F (-20 to 50°C) Charging temperature: 32 to 95°F (0 to 35°C) Humidity application range: 15 to 90% RH (non-condensing) |
| Protection Class | IP40 |
| Dimensions | 9 x 4 x 2" (22.86 x 10.16 x 5.08 cm), including probe connection (approximately) |
| Weight | Analyzer: 1.5 lbs (0.68 kg) approximately Kit: 7 lbs (3.2 kg) |
Click on a category to view a selection of compatible accessories with the Testo 320 Combustion Analyzer Kit with printer, O2, 0 to 5000 ppm CO.
