Airy Technology®
Remote Particle Counters
R2301P Remote Airborne
Particle Counter
0.3 – 25.0 µm @ 0.1 CFM
The Airy Technology® R2301P Remote Airborne Particle Counter is designed for continuous monitoring in cleanrooms and other controlled environments. With four particle size channels ranging from 0.3 up to 25.0 μm, these instruments deliver targeted contamination detection with realtime data collection and configurable alarms for immediate incident reporting and local visual alerts.
The compact, angled enclosures enable installation in tight locations while minimizing disruption to unidirectional airflow. These sensors are equipped with an internal vacuum source and HEPA filtered exhaust
Built for scalability and long-term reliability, these models utilize durable laser diodes backed by a lifetime warranty and deliver exceptional zero-count performance. The R2000 Series sensors allow for efficient particle counting with specifications that exceed the ISO 21501-4 and JIS B9921 calibration standards.
With seamless connectivity, remote diagnostics, and a standardized architecture, they offer simplified integration and
| • 0.1 CFM (2.83 LPM) flow rate |
| • Long life laser diode technology |
| • Measures up to 4 channels of simultaneous data |
| • Accurate in high concentration environments with minimal time to zero-count |
| • Internal vacuum pump with HEPA filtered exhaust |
| • Troubleshoot issues remotely from anywhere with an internet connection |
| • Internal critical orifice provides precise airflow control, consistent measurements |
| • Modbus RTU/ASCII data communication over isolated RS-485 |
| • Complies with ISO 21501-4 and JIS B9921 standards |
| • Easy to clean, lightweight stainless steel enclosure with minimal particle traps |
| • Versatile mounting options |
| • User configurable alarm light and LED indicators for real-time alerts |
| • Seamless integration into a facility monitoring system |
| • 2 Year Limited Warranty (Extended and Lifetime Warranties available) |
| Model | R2301P | R2501P |
| Size Range | 0.3 μm to 25 μm | 0.5 μm to 25 μm |
| Size Channels | Factory calibrated at 0.3, 0.5, 1.0, and 5.0 μm | Factory calibrated at 0.5, 1.0, 2.5, and 5.0 μm |
| Counting Efficiency | 50% @ 0.3μm; 100% for particles > 0.45 μm per JIS | 50% @ 0.5μm; 100% for particles > 0.75 μm per JIS |
| Flow Rate | 0.1 CFM (2.83 LPM) | |
| Concentration Limits | 10,000,000 particles/ft3 @ 10% coincidence (per ISO 21501-4), | |
| 20,000,000 particles/ft3 @ 10% coincidence (as tested and validated1) | ||
| Light Source | Long life laser diode | |
| Zero Count | < 1 count / 60 minutes (< 1 particles / 6ft3). No fault count subtraction. | |
| Calibration | NIST traceable | |
| Vacuum Source | Internal vacuum pump with HEPA filter | |
| Airflow | Internally monitored | |
| Number of Channels | 4 Channels | |
| Alarm | User configurable alarm light | |
| Communication Modes | MODBUS™ RTU, ASCII (over isolated RS-485) | |
| Standards | ISO 21501-4 and JIS B9921 | |
| Instrument Calibration | Recommended minimum once per year | |
| External Surface | Stainless steel | |
| Dimensions (L x W x H) | 3.5” x 1.8” x 5.6” (8.9 cm x 4.6 cm x 14.2 cm) including probes and connectors | |
| Weight | 1.94 lb. (0.88 kg) | |
| Accessories | Wiring Connector, Operating and User Manual on USB flash drive | |
| Optional Accessories | Power Supply, Remote Mounting Bracket, Isokinetic Probe, Filter Assembly, Sample & Vacuum Tubing | |
| Sample Time | 1 second to 99 hours | |
| Power | 9 - 24 VDC (< 1.5 watts) | |
| Operating Conditions | 41° to 104°F (5° to 40°C) / 20% to 95% non-condensing | |
| Storage Conditions | 32° to 122°F (0° to 50°C) / Up to 98% non-condensing | |
| Warranty | 2 Year Limited Warranty (Extended and Lifetime Warranties available) | |
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Part Number: AS-99015 | Part Number: EE-80092 | Rechargeable & Removable Part Number: EE-80003A | (For EE-80003A) Part Number: AS-99005A |
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Part Number: EE-80014A | 0.1 CFM (2.83 LPM) Part Number: AS-99002 | 0.1 CFM (2.83 LPM) Part Number: AS-99002A | Connector (5 POS) Part Number: EE-79015A |
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0.1 CFM (2.83 LPM) Part Number: PS-12041 | 0.1 CFM (2.03 LPM) Part Number: PS-12070 | 0.1 CFM (2.83 LPM) Part Number: PS-12022 | 1/8 (Stainless) Part Number: PS-12005 |
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Includes 2 Rolls of Paper Part Number: AS-99011 | Single Roll Part Number: AS-99012 | Cleanroom Paper (10 Pack) Part Number: AS-99013 | 15V ~2A 100-240 VAC Part Number: EE-80127 |
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USA, Japan, Philippines, Taiwan Part Number: EE-80128 | Europe & Korea Part Number: EE-80129 | UK, Malaysia & Singapore Part Number. EE-80130 | China & Australia Part Number: EE-80131 |
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3/8" OD (1/4" ID) Part Number: AS-99019 | 3/8" OD (1/4" ID) Bev-A-Line XX Part Number: AS-99037 | Part Number: MN-24001 | 6ft (1.8m) Part Number: AS-99022 |
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User Manual (Printed) Part Number: MN-24001P | Validation Manual Part Number: MN-24002 |