Airy Technology®
Remote Particle Counters

R5301 Remote Particle Counter

0.3 – 25 µm @ 0.1 CFM

The Airy Technology® R5301 Remote Airborne Particle Counter measures particles from 0.3 to 25.0 μm at a flow rate of 0.1 CFM (2.83 LPM). These compact and user-friendly instruments display up to six selectable particle size channels, along with optional temperature and relative humidity sensors.

Built for research, industrial hygiene, indoor air quality, and cleanroom applications, the R5000 Series delivers reliable, high-performance monitoring across a wide range of environments. 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 and enables immediate identification of elevated particle counts. Adjustable audible alarms offer an additional layer of awareness in critical environments.

Designed for continuous, powered operation, the R5000 Series is ideal for fixed installations where uninterrupted monitoring is essential. Data can be managed directly on the device, through a facility monitoring system or through the free Airy Technology® software. Export raw data in .CSV or generate custom reports (ISO 14644-1, EU GMP Annex 1, or FS 209E). Remote diagnostics are available through the software from anywhere with an internet connection. The R5000 Series can function as a standalone unit or be seamlessly integrated into building automation and cleanroom management systems.

• 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 0.3 or 0.5 μm to 10 μm including TPM of up to 25.0 μm
• Large, intuitive color touch screen display with an easy-to-use icon-driven interface
• Versatile mounting options
• 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
• Common interface ensures ease of use across all products
• Connect using Ethernet, USB, Wi-Fi (optional), RS 485 or RS232
• Displays 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
• Easy to clean, lightweight stainless steel enclosure with minimal particle traps
• 2 year Limited Warranty (Extended and Lifetime warranties available
ModelR5301R5501
Size Range0.3 to 25 μm0.5 to 25.0 μm
Size ChannelsFactory calibrated at 0.3, 0.5, 1.0, 2.5, 5.0, 10.0 μm variable binningFactory calibrated at 0.5, 1.0, 2.5, 5.0, 10.0, 30.0 μm variable binning
Counting Efficiency50% @ 0.3 μm; 100% for particles >0.45 μm per JIS50% @ 0.5 μm; 100% for particles >0.75 μm per JIS
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)
Light SourceLong life laser diode
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
Printer (Optional)External thermal printer available
Vacuum RequirementsExternal vacuum >15” (38.1 cm) of Hg
AirflowInternally monitored
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
Communication ModesEthernet, USB, Wireless 802.11 b/g (Optional), RS485 or RS232
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 2.25 x 9.13 in (13.3 x 5.8 x 22.6 cm) includes barb fittings
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

Antenna

Carrying Case
Part Number: AS-99015

Wireless 802.11 b/g with Output Antenna
Part Number: EE-80092

Battery 55Wh
Rechargeable & Removable
Part Number: EE-80003A

External 55h Battery Charger
(For EE-80003A)
Part Number: AS-99005A

Temperature and Humidity Probe
Part Number: EE-80014A

Filter
0.1 CFM (2.83 LPM)
Part Number: AS-99002

Filter Assembly
0.1 CFM (2.83 LPM)
Part Number: AS-99002A

RS-485/232
Connector (5 POS)
Part Number: EE-79015A

Isoprobe Threaded (Ni Plated Al)
0.1 CFM (2.83 LPM)
Part Number: PS-12041

Isoprobe Threaded (Stainless)
0.1 CFM (2.03 LPM)
Part Number: PS-12070

Isoprobe Barbed (Stainless)
0.1 CFM (2.83 LPM)
Part Number: PS-12022

Inlet Fitting Barbed
1/8 (Stainless)
Part Number: PS-12005

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External Thermal Printer
Includes 2 Rolls of Paper
Part Number: AS-99011

Thermal Printer Paper
Single Roll
Part Number: AS-99012

Thermal Printer Paper
Cleanroom Paper (10 Pack)
Part Number: AS-99013

Power Supply
15V ~2A 100-240 VAC
Part Number: EE-80127

Power Supply Connector
USA, Japan, Philippines, Taiwan
Part Number: EE-80128

Power Supply Connector
Europe & Korea
Part Number: EE-80129

Power Supply Connector
UK, Malaysia & Singapore
Part Number. EE-80130

Power Supply Connector
China & Australia
Part Number: EE-80131

Tubing (per foot)
3/8" OD (1/4" ID)
Part Number: AS-99019

Tubing (per foot)
3/8" OD (1/4" ID) Bev-A-Line XX
Part Number: AS-99037

IMS Software & User Manual (USB Key)
Part Number: MN-24001

USB Cable
6ft (1.8m)
Part Number: AS-99022

R5000 Series
User Manual (Printed)
Part Number: MN-24001P

R5000 Series
Validation Manual
Part Number: MN-24002