Multinorm Combined Indoor Air Quality and sound analyser Universal all-in-one instrument for measurement of air temperature, air velocity, relative humidity, illuminance, luminance and Class 1 (Pro Set) or Class 2 (Euro Set and Standard Set) sound analysis. • Measurement functions: air temperature, air velocity/multipoint/mass flow calculations, relative humidity/dew point, illuminance and sound level meter and analyser. Completely digitalized Class 1 (Pro Set) or Class 2 (Euro Set and Standard Set) sound level meter with two independent measuring channels compliant with IEC 61672 standard. Each channel can be set with different time and frequency weighting. Multinorm is also a real-time octave and one third octave frequency analyser compliant with IEC 61260 standard. • Operates in two modes: in an on-line reading mode which displays current measurements and in a logger mode, which automatically stores all measurement values per logging interval. • Dimensions (w x h x l): 220 x 115 x 90 mm. • Mass (without accessories): 0.70 kg.