Airy Technology®
Remote Particle Counters

Particle Counter R306

Model R5501P-30 Remote
Airborne Particle Counter

0.5 – 75 µm @ 0.1 CFM with long-life internal pump

The Airy Technology® R5501P-30 Remote Airborne Particle Counter measure particles from 0.5 to 75.0 μm at a flow rate of 0.1 CFM (2.83 LPM). These user-friendly instruments display up to six selectable particle size channels, along with optional temperature and relative humidity measurements.

Designed for cleanroom monitoring, indoor air quality, industrial hygiene, research, and health & safety applications, the R5000 Series offers exceptional versatility. From the cleanest labs to the dirtiest worksites, confidently monitor any environment thanks to the industry’s highest particle concentration limits.

One of the key advantages of the R5000 Series as a remote particle counter is its built-in touchscreen display. It provides real-time visual feedback for technicians working in critical areas, enabling immediate identification of elevated particle counts. Adjustable audible alarms offer an additional layer of awareness in critical environments. The Airy Technology® Real-Time Monitoring technology enables dynamic particle investigations, displaying data in particles per second to help users quickly locate contamination sources in controlled environments.

Data can be managed directly on the device, through a facility monitoring system or through the free Particles Plus® software. Export raw data in .CSV format or generate reports (ISO 14644-1, EU GMP Annex 1, or FS 209E). Remote diagnostics are also available from anywhere with an internet connection. The R5000 Series can function as a fully portable, battery-operated solution or be easily integrated into building automation and cleanroom management systems with multiple communication options.

• Stores up to 45,000 sample records, 1,000 sample locations and 50 recipes
• Long life laser diode technology for reliable performance
• Approximates mass concentration in μg/m³ with density and refractive index corrections
• User selectable PM sizes from 0.5 μm to 10 μm including TPM of up to 75 μm
• Large, intuitive color touch screen display with an easy-to-use icon-driven interface
• Resolve issues quickly from any location with internet-enabled remote diagnostics
• Annotation function allows user to save 32 character notations to a live sample record
• Seamlessly integrates into facility monitoring and building automation systems
• Connect using Ethernet, USB, Wi-Fi (optional), RS 485 or RS232
• Export user-definable reports for ISO 14644-1, EU GMP Annex 1 and FS 209E
• Built-in visual and audible alarms with comprehensive alarm management
• Complies with ISO 21501-4 and JIS B9921 standards
• Seamlessly integrates into facility monitoring and building automation systems
• Easy to clean, lightweight stainless steel enclosure with minimal particle traps
• 2 year Limited Warranty (Extended and Lifetime warranties available)
ModelR5501P-30
Size Range0.5 to 75 μm
Size ChannelsFactory calibrated at 0.5, 1.0, 2.5, 5.0, 10.0, 30.0 μm variable binning
Flow rates0.1 CFM (2.83 LPM)
Concentration Limits15,000,000 particles/ft3 @ 10% coincidence (per ISO 21501-4),
30,000,000 particles/ft3 @ 10% coincidence (as tested and validated1)
Aerosol Concentration Range0.01 to 20,000 μg/m³
Light SourceLong life laser diode
Counting Efficiency50% @ 0.5 μm; 100% for particles >0.75 μm per JIS
Zero Count<1 count / 60 minutes (<1 particles / 6 ft3). No fault count subtraction.
Count ModesReal-Time Meter and graph, cumulative/differential count/m³and count/ft³, and mass concentration (PM)
Count Alarms1 to 9,999,999 counts
CalibrationNIST traceable
Display4.3″ (10.9 cm) WQVGA (480×272) color touch screen
Optional PrinterExternal thermal printer available
Vacuum SourceInternal pump with automatic flow control
Filtered ExhaustInternal HEPA filter
Number of Channels6
Custom Size ChannelsCalibration for custom size channels available
Audible AlarmAdjustable built-in alarm
ReportsISO 14644-1, EU GMP Annex 1, FS 209E
Recipes50 user-configurable recipes
Communication ModesEthernet, USB, RS485, RS232, and (optional) 802.11b/g wireless
Optional Environmental SensorTemperature (32-122°F, ±1°F / 0-50°C, ±0.5°C) and relative humidity probe (15–90% RH, ±2%) 
AlarmIntegrated alarms for particle counts (any size channel), sensor failure, environmental sensors, and flow rate
StandardsISO 21501-4 and JIS B9921
CalibrationRecommended minimum once per year
External SurfaceStainless steel
Dimensions (L x W x H)5.22 x 3.81 x 9.42 in (14.0 cm x 9.7 cm x 23.9 cm) includes barb fitings
Weight2.6 lb (1.18 kg)
AccessoriesUser manual + Instrument Management Software (IMS) on USB flash drive, isokinetic probe, zero-count filter, USB cable, and power supply
Optional AccessoriesPrinted manual, temperature relative humidity probe, carrying case, external printer, barbed fittings, and tubing
Buffer MemorySecurely stores up to 45,000 sample records with particle counts, environmental data, locations, and timestamps
Sample LocationsUp to 1,000 locations 20 characters long
Sample Time1 second to 99 hours
Power110 to 240 VAC 50/60 Hz universal in-line power supply
Operating Conditions41º to 104ºF (5º to 40ºC) / 20% to 95% non-condensing
Storage Conditions32º to 122ºF (0º to 50ºC) / Up to 98% non-condensing
Warranty2 year Limited Warranty (Extended and Lifetime warranties available

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