Airmodus Nanoparticle Diluter (AND) prototype
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Airmodus Nanoparticle Diluter (AND) prototype specifications Version: 0.9 Document date 11th of November 2019 Page 1/3 Airmodus Nanoparticle Diluter (AND) prototype specifications Dilution ratio Particle size range 1 – 2 500 nm Particle transmission efficiencies: >50% for 1.2 nm >75% for 2.0 nm >90% for 3.0 nm Inlet flow rate 5.75 lpm ± 0.25 lpm depending on the particle detector inlet flow rate Instrument flow rate 0.8 – 2.7 lpm can be used. AND measures the inlet flow rate of the particle counter when AND is initialized (either STATUS / INIT – button or via serial communication) with measurement accuracy of ±1.5%. User can also measure the inlet flow rate and set the value through AND software. Instrument zero count measurement AND can measure the zero-count rate of the particle counter using HEPA filtered air. Zero mode can be started using serial command. All the ions with electrical mobility diameter (singly charged) < 5nm can be removed (either ION PRECIPITATOR - button or via serial communication) Sample drying AND dries the sample down to relative humidity < 40% at all < 50oC and 99% RH sample conditions Range 0-99% (non-condensing); measurement accuracy of ± 1.5%. RH% of the diluted sample is calculated by the instrument automatically. Sample temperature From -20 to 50oC; Measured with accuracy of ± 0.1oC. Temperature of the diluted sample is calculated by the instrument automatically. Sample pressure Airmodus Ltd. Erik Palménin aukio 1 00560 Helsinki, Finland FI23103192 Range -10 to +5 kPa relative to environmental conditions around the instrument. Active pressure correction allows the usage with +358 50 5666043 www.airmodus.com info@airmodus.com sales@airmodu

Airmodus Nanoparticle Diluter (AND) prototype specifications Version: 0.9 Document date 11th of November 2019 Page 2/3 atmospheric pressures ranging from 0.5 to 1 atm. Pressure of the sample as well as the surroundings of the instrument are measured with accuracy of ±1.5% (of measurement value) External vacuum requirements External compressed air requirements 1.0 – 3.0 bar at NTP. The air should be free of particles, oil and water (dew point below 0oC). Maximum operating pressure of 3.0 bar. Power requirements 100-240 VAC Max 50W Normal power drain 30W Universal AC input/full range...

Airmodus Nanoparticle Diluter (AND) prototype specifications Version: 0.9 Document date 11th of November 2019 Page 3/3 Figure 1. Particle penetration measured using monodisperse NiCr-oxide (-) particles produced with a hot wire generator and size selected with the HalfMini DMA as well as calculated using the Gormley & Kennedy (1949) parametrization taking into account only the diffusional losses inside the AND. Table 1. Ion precipitator efficiency measured using negatively charged monodisperse silver particles and Airmodus A11 nCNC as detector. Airmodus Ltd. Erik Palménin aukio 1 00560...