The Airy Technology P231 is very small fixed mount particle counter that measures 0.5 µm and 5.0 µm particles with a flow rate of 1.0 CFM. The P231 ingrates with any MODBUS based building management system. The P231 measures particles from 0.5 µm and 5.0 µm with a flow rate of 1.0 CFM (28.3 LPM). The P231 is ideal for cleanroom continuous monitoring and ISO Cleanroom Certification.
Specifications
Technical Specifications - Airy P231
Particle Channel Sizes
0.5 µm and 5.0 µm
Counting Efficiency
50% at 0.5 μm; 100% for particles > 0.75 μm (per JIS)
Concentration Limit
500,000 particles / ft3 at 5% coincidence loss
Light Source
Long Life Laser Diode
Zero Count Level
<1 count / 5 minutes (per JIS B9921)
Size Resolution
<15% at 0.7 μm (per ISO 21501-4)
Flow Rate
1.0 CFM (28.3 LPM)
Flow Control
Critical orifice
Vacuum Requirements
External vacuum >15” (38.1 cm) of Hg
Calibration
NIST traceable
Sample Probe/Tubing
Isokinetic sampling probe
Communication Interface
Modbus™ RTU or Modbus™ ASCII outputs (specified upon order)
Power
9-30 VDC
Dimensions (L x W x H)
1.8” x 3.7“ x 1.5” (4.5 cm x 9.3 cm x 3.8 cm) does not include probes
Weight
0.62 lb (0.28 kg)
Standards
ISO 21501-4 and JIS B9921
Warranty
2 year limited warranty
Operating Conditions
5° to 35°C 20% to 95%RH non-condensing
Storage Conditions
-20° to 50°C Up to 98%RH non-condensing
Included Accessories
Isokinetic sampling probe and user manual
Optional Accessories
Purge filter, data cable, vacuum and sample tubing
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