Indoor air quality meter

The testo 435-2 indoor air quality meter allows you to carry out all the measurements that are necessary to check and adjust ventilation and air conditioning systems and assess the quality of the indoor air. Select from a wide range of probes and sensors. Because it’s you know best what your meter needs to be able to do!

Temperature - NTC:

• Measuring range: -50 to +150 °C
• Accuracy:
• ±0.2 °C (-25 to +74.9 °C)
• ±0.4 °C (-50 to -25.1 °C)
• ±0.4 °C (+75 to +99.9 °C)
• ±0.5 % of mv (Remaining Range)
• Resolution: 0.1 °C
• Temperature - TC Type K (NiCr-Ni):
• Measuring range: -200 to +1370 °C
• Accuracy:
• ±0.3 °C (-60 to +60 °C)
• ±(0.2 °C + 0.5 % of mv) (Remaining Range)
• Resolution: 0.1 °C
• Temperature - TC Type T (Cu-CuNi):
• Measuring range: -200 to +400 °C
• Accuracy:
• ±0.3 °C (-60 to +60 °C)
• ±(0.2 °C + 0.5 % of mv) (Remaining Range)
• Resolution: 0.1 °C
• Humidity - Capacitive:
• Measuring range: 0 to +100 %RH
• Accuracy: See probe data
• Absolute Pressure:
• Measuring range: 0 to +2000 hPa
• Accuracy: See probe data
• Resolution: 0.1 hPa
• Velocity - Vane:
• Measuring range: 0 to +60 m/s
• Accuracy: See probe data
• Resolution:
• 0.01 m/s (60 + 100 mm Vane)
• 0.1 m/s (16 mm Vane)
• Velocity - Hot wire:
• Measuring range: 0 to +20 m/s
• Accuracy: See probe data
• Resolution: 0.01 m/s
• Light: Measuring range: 0 to +100000 Lux
• Accuracy: See probe data
• Resolution: 1 Lux ,0.1 Hz
• General technical data:
• Dimensions: 220 x 74 x 46 mm
• Operating temperature: -20 to +50 °C
• Housing: ABS / TPE / Metal
• Protection class: IP54
• Battery type: Alkali manganese, mignon, type AA
• Battery life: 200 h (typical vane measurement)
• Display ligthing: Illuminated display
• Storage temperature: -30 to +70 °C
• Weight: 428 g