Airy Technology P231 Remote Particle Sensor

The Airy Technology P231 Remote Particle Sensor  is designed for continuous monitoring. The P231 monitors 0.5µm particle sizes simultaneously with a flow-rate of 1.0 CFM (28.3 LPM). Using Modbus/RS485 communications, the sensor can be easily integrated into the CIMScan Monitoring System. Its compact size and light weight maximizes the flexibility of mounting locations. The P231 complies with ISO 21501-4 and comes with a 2-year warranty. The P231 with CIMScan Monitoring System is suitable from mini environment to large facility monitoring.

Features & Benefits

  • 2 Channel (0.5µm and 5.0µm)
  • 1.0 CFM (28.3 LPM)
  • 2 Year Warranty
  • Streamlined & Lightweight
  • Integrate to CIMScan Monitoring System
  • Modbus/RS485 Output
  • ISO 21501-4 and JIS B9921 Compliant
  • Stainless Steel Enclosure
  • Optional Temperature & Humidity Sensor


  • Channel Sizes: 0.5µm and 5.0µm
  • Flow Rate: 1.0 CFM (28.3 LPM) ±3% accuracy
  • Flow Control: Critical Orifice
  • Counting Efficiency: 50% at 0.5µm; 100% for particles >0.75µm (per ISO 21501-4 and JIS)
  • Concentration Limits: 500,000 particles/ft3 at 5% coincidence loss
  • Light Source: Laser Diode
  • Zero Count Level: <1 count / 5 minutes (per ISO 21501-4 and JIS)
  • Calibration: NIST Traceable
  • Vacuum Requirements: External Vacuum, >15″ (38.1 cm) of Hg
  • Communication Modes: Modbus/RS485
  • Supporting Software: CIMScan Monitoring System
  • Power Requirements: 9-30VDC
  • Dimensions (L x W x H): 45x93x38 mm (without inlet, terminal strip, and mounting part)
  • Port Sizes: 1/4 ID
  • Enclosure: Stainless Steel
  • Weight: 279g
  • Standards: CE, JISB9921, ISO 21501-4
  • Environmental Sensors: T/H Sensor (Optional)
  • Operating Conditions: 50°F to 104°F (10°C to 40°C) / 5% to 95% non-condensing
  • Storage Conditions: -4°F to 122°F (-20°C to 50°C) / 5% to 95% non-condensing
  • Warranty: 2-year limited warranty
  • Included Accessories: Isokinetic Sampling Probe; Sampling Tube
  • Optional Accessories: Vacuum Tubing; Zero (Purge) Filter

Find the P231 Remote Particle Sensor at Production Automation, along with all other Airy Technology Particle Sensor Options

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Mel Meadows

Mel Meadows

Mel Meadows is a product specialist with over 13 years of experience. She’s a central source of expertise for thousands of industrial and critical-class products featured on the Production Automation web store. By working directly with manufacturers, Mel deciphers technical documentation and outlines product use in real-world environments. View her profile to learn more about proper techniques, protocol, and product usage in both industrial and cleanroom facilities.

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