testo 435-3,The allrounder for ventilation and indoor air quality

The multi-function measuring instrument testo 435 is your reliable partner for analyzing Indoor Air Quality. Indoor Air Quality has a crucial influence on the well-being of humans at their workplaces, and is also a determining and important factor in storage and production processes. In addition to this, the Indoor Air Quality signals whether the HVAC system is working at optimum energy level, or needs to be adjusted using the testo 435. The parameters CO2, relative humidity and room temperature are available for the evaluation of Indoor Air Quality. In addition to this, absolute pressure, draught, Lux, U-value and surface temperature can be measured. For the determination of volume flow, you can use all possiblities for the measurement of flow velocity – such as thermal probes, vanes and Pitot tubes. The right instrument for every application The new testo 435 is available in four versions. Depending on the application, you can choose from versions with builtin differential pressure measurement as well as versions with additional instrument functions such as instrument memory, PC software and an extended range of probes. testo 435-3 multi-functional measurement instrument with built-in differential pressure measurement for A/C, ventilation and Indoor Air Quality, battery and calibration protocol included. General technical data: Operating temperature: -20 to +50°C. Storage temperature: -30 to +70°C. Dimensions: 220 x 74 x 46 mm. Battery type: Alkali manganese, mignon, Type AA. Battery life: 200 h (typical vane measurement). Weight: 428 g. Housing material: ABS/TPE/Metal. Protection class: IP54. Sensor types: 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 m.v. (remaining range). Resolution: 0.1°C. Type K (NiCr-Ni): Measuring range: -200 to +1370°C. Accuracy: ±0.3°C (-60 to +60°C) ±(0.2°C +0.5% of m.v.) (remaining range). Resolution: 0.1°C. Type T (Cu-CuNi): Measuring range: -200 to +400°C Accuracy: ±0.3°C (-60 to +60°C) ±(0.2°C +0.5% of m.v.) (remaining range). Resolution: 0.1°C. Testo humid. sensor, cap.: Measuring range: 0 to +100 %RH.Accuracy: See probe data. Resolution: 0.1 %RH.Vane: Measuring range: 0 to +60 m/s. Accuracy: See probe data. Resolution: 0.01m/s (60 + 100 mm Vane) 0.1 m/s (16 mm Vane).Hot wire: Measuring range: 0 to +20 m. Accuracy: See probe data. Resolution: 0.01 m/s. Absolute pressure probe.:Measuring range: 0 to +2000 hPa. Accuracy: See probe data. Resolution: 0.1 hPa.CO2 (IAQ probe):Measuring range: 0 to +10000 ppm CO2: Accuracy: See probe data. Resolution: 1 ppm CO2. Sensor types: Lux: Measuring range: 0 to +100000 Lux. Accuracy: See probe data. Resolution / Overload: 1 Lux; 0.1 Hz. Differential pressure probe, internal: Measuring range: 0 to +25 hPa. Accuracy: ±0.02 hPa (0 to +2 hPa) ±1% of m.v. (remaining range). Resolution: 0.01 hPa / 200 hPa.