| Detection principle | Condensation Particle Counter |
| Working fluid | n-butanol (n-butyl alcohol) |
| Output | Particle number concentration / cm³ |
| Particle concentration range | Single count mode: Up to 150,000 particles/cm³Photometric mode: Up to 107 particles/cm³ |
| Reproducibility | Single count mode: > 95%Photometric mode: > 90% |
| Particle size range | 4.0 nm … 1 µmD50 = 7 nm (measured with silver particles)D90 < 14 nm |
| Response time | trise < 5 stfall < 5 s |
| Sampling and conditioning | 1 m sampling pipe with sampling headIsothermal humidity extraction via Nafion membraneSensor controlled |
| Sample air flow rate | 0.3 l/min, pulse-free carbon vane pumps |
| Total flow rate | 1.5 l/min, ≤ 5% difference to the nominal flow rate |
| Flow control | Critical orifice with stabilized temperature |
| Diffusion losses | < 30% for smallest relevant particle size of 7 nm |
| Weather housing | Stainless steel, powder-coated, thermally isolated, temperature controlled |
| Climate sensors | Wind speed and direction, precipitation, pressure, temperature relative humidityGPS positioning |
| Data recording | Data logger and netbook integrated in housing for online dataOptionally on USB flash drive |
| Connectivity | Data logger, USB, GSM with SIM card for mobile network, analog input for meteorological sensors |
| Power requirements | 110 … 220 VAC, 50 … 60 Hz100 … 150 W |
| Operating conditions | Ambient temperature: -20 ... 40 °C (-4 … 104 °F), RH < 95% Ambient humidity: 0 … 95% RH, non-condensing Absolute pressure range: 500 … 1,100 mbar |
| Transport and storage | 0 … 50 °C (32 … 122 °F)RH < 95% |
| Dimensions (H x W x D) | Housing: 49 x 28 x 65 cm (19.3 x 11 x 25.6 in) Total height with sampling pipe and meteorological sensor: 140 cm (55.1 in) |
| Weight | 38 kg (83 lbs) |
