Digital particle counter A20 CPC

condensationfor clean roomsUSB

Overview
The Airmodus A20 CPC is a modular condensation particle counter platform engineered for flexible calibrations and fast response across monitoring and research applications. One hardware platform supports multiple calibrations, cut-offs and standardized accessories to simplify networked deployments and service.

Features and benefits

• Modular platform: UF, CEN, HF, PMP variants
• Operates with n-Butanol (>99.5%) or Propylene Glycol
• Fully open calibration algorithm for traceability
• Touchscreen user interface and advanced signal diagnostics
• Compatible with Airmodus PSM, A-SMPS and A12 nCNC systems
• BlockSafe inlet system and compatibility with TSI 3082/3080 platforms

Available variants

• A20-UF: ~3 nm cut-off, ACTRIS UF whitelist — ultrafine particle research
• A20-CEN: 10 nm cut-off, ACTRIS whitelist — CEN-compliant monitoring, suitable as SMPS detector
• A20-HF: 7 nm cut-off, 2.3 L/min — high-flow applications such as cleanroom monitoring and Eddy Covariance
• A20-PMP: PMP-compliant variant for automotive regulatory measurements (coming soon)

Approvals & Certifications

• ACTRIS whitelist (UF and CEN variants)
• EN 16976:2024
• dualCPC compliant (UF)

Technical specifications

• Particle size range: 3 nm – 2.5 μm (variant-dependent; UF: 3 nm, CEN: 10 nm, HF: 7 nm)
• Cut-off (Dp50%): variant-dependent — UF ~2.8–3.8 nm; CEN 10 ±1 nm; HF 7 nm (4–10 nm on request)
• Concentration range: 0 – ~100,000–150,000 #/cm³ (variant-dependent)
• Aerosol sample flow: 1.05 L/min (UF, CEN) or 2.3 L/min (HF)
• Response time: t95 < 1.15 s
• False counts: < 0.001 #/cm³
• Working fluid: n-Butanol (>99.5%) or Propylene Glycol
• Sample conditions: Pressure 75–105 kPa; Dew Point < 10–15°C (variant-dependent)
• Environmental conditions: Temperature 15–35°C; Pressure 75–105 kPa; RH 0–95%
• Communication: Analog out (BNC), Pulse out (BNC), RS-232, Ethernet RJ45, USB Type-B
• Data logging: 1 Hz default; 10 Hz and raw pulse output available
• Software: Airmodus MultiLogger (Windows 10+); compatible with TSI 3082/3080 SMPS and AIM software
• External vacuum: 100–400 mbar at NTP (or <40% of inlet pressure); optional internal pump available
• Power requirements: External adaptor 100–240 VAC 50/60 Hz, max 160 W; steady state ~100 W; output 12 VDC 11.5 A
• Dimensions & weight: 260 × 230 × 400 mm (H × W × D); 8.5 kg
• Shipping conditions: Temperature 0–40°C; RH <95% non-condensing; ship upright
• Note: Specifications represent the range across all A20 variants. Refer to variant datasheets for detailed values.