Testo 435-4 - Multifunction indoor air quality meter
The testo 435-4 multifunction indoor air quality meter allows you to carry out all the measurements you need to inspect and adjust ventilation and air conditioning systems and to check the quality of the indoor air. There is also an integrated pressure difference sensor for pitot static tube measurements and filter monitoring and a wide range of optionally available sensors and probes to choose from.
Tech specs:
| Accuracy (NTC) : | ±0,2 °C (-25 do +74,9 °C) ,
±0,4 °C (-50 do -25,1 °C) ,
±0,4 °C (+75 do +99,9 °C) ,
±0.5 % of mv (Remaining Range) |
| Measuring range (NTC) : | -50 do +150 °C |
| Resolution (NTC) : | 0,1 °C |
| Measuring range TC Type K (NiCr-Ni): | -200 to +1370 °C |
| Accuracy TC Type K (NiCr-Ni): | ±0,3 °C (-60 do +60 °C) ,
±(0.2 °C + 0.5 % of mv) (Remaining Range) |
| Resolution TC Type K (NiCr-Ni): | 0,1 °C |
| Measuring range TC Type T (Cu-CuNi): | -200 do +400 °C |
| Accuracy TC Type T (Cu-CuNi): | ±0,3 °C (-60 do +60 °C) ,
±(0.2 °C + 0.5 % of mv) (Remaining Range) |
| Resolution TC Type T (Cu-CuNi): | 0,1 °C |
| Measuring range (humidity - capacitive): | 0 do +100 %RH |
| Resolution (humidity - capacitive) : | 0,1 %RH |
| Measuring range (absolute pressure): | 0 do 2000 hPa |
| Resolution (absolute pressure) : | 0,1 hPa |
| Measuring range (air flow): | 0 do 60 m/s |
| Resolution (air flow): | 0.01 m/s (Ø 60 mm vane + Ø 100 mm vane) ,
0,1 m/s (Ø 16 mm vane) |
| Measuring range (velocity - hot wire anemometer): | 0 do 20 m/s |
| Resolution (velocity - hot wire anemometer) : | 0,01 m/s |
| Measuring range (ambient CO₂): | 0 do +10000 ppm |
| Resolution (ambient CO₂) : | 1 ppm |
| Measuring range (differential pressure): | 0 do +25 hPa |
| Accuracy (differential pressure) : | ±0,02 hPa (0 do +2 hPa) ,
±1 % of mv (Remaining Range) |
| Resolution (differential pressure) : | 0,01 hPa |
| Overload (differential pressure) : | 200 hPa |
| Measuring range (light): | 0 do 100000 Lux |
| Resolution (light): | 1 Lux, 0,1 Hz |
| Dimensions: | 220 x 74 x 46 mm |
| Ambient temperature: | -20 to +50 °C |
| Housing: | ABS / TPE / Metal |
| Protection class: | IP54 |
| EU-/EG-guidelines: | 2004/108/EG |
| Battery type: | 3AA |
| Battery life: | 200 h (typical vane measurement) |
| Display ligthing: | Tak |
| Memory: | 10,000 measuring values |
| Storage temperature : | -30 do +70 °C |
Weight: net | 428 g |
| Pictures: | illustrative |
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