5501P Remote Particle Counter

Model 5501P

0.5 – 25 µm @ 0.1 CFM with internal pump

The Particles Plus® 5501P Remote Particle Counter measures particles from 0.5 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 5000 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 5000 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.

Designed for continuous, powered operation, the 5000 Series is ideal for fixed installations where uninterrupted monitoring is essential. Manage data directly on the device or through the Particles Plus® free 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 5000 Series can function as a standalone unit or be seamlessly integrated into building automation and cleanroom management systems.

Measures up to six particle size channels simultaneously
Approximates mass concentration with density and refractive index corrections
Large, icon-driven color touchscreen display for easy operation
Optional temperature, relative humidity, CO2 and TVOC sensors
Stores up to 45,000 sample records, 1,000 locations, and 50 sampling recipes
Annotation feature allows users to save 32-character notes with sample records
Connect using Ethernet, USB, Wi-Fi (optional), RS 485 or RS232
Long-life laser diode technology for reliable sensor performance
Troubleshoot issues remotely from anywhere with an internet connection
Resolve issues quickly from any location with internet-enabled remote diagnostics
Seamlessly integrates into facility monitoring and building automation systems
Easy to clean, lightweight stainless steel enclosure with minimal particle traps
Complies with ISO 21501-4 and JIS B9921 standards
Built-in audible and visual alarms for real-time alerts
Versatile mounting options
2 Year Limited Warranty (Extended and Lifetime Warranties available)
Model5301P5501P
Size Range0.3 to 25.0 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, 0.7, 1.0, 2.5, 5.0, 10.0 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
Concentration Limits15,000,000 particles/ft3 @ 10% coincidence (per ISO 21501-4),
30,000,000 particles/ft3 @ 10% coincidence (as tested and validated1)
Flow rates0.1 CFM (2.83 LPM)
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/m3 and 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
Internal Vacuum PumpInternal pump with automatic flow control
AirflowInternally monitored with HEPA filtered exhaust
Number of Channels6
Custom Size ChannelsCalibration for custom size channels available
Audible AlarmAdjustable integrated alarm
Communication ModesEthernet, USB, Wireless 802.11 b/g (Optional), RS485 or RS232
Optional Environmental SensorIncludes temperature (32-122°F, ±1°F / 0-50°C, ±0.5°C) and relative humidity probe (15–90% RH, ±2%)
AlarmAlarms 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)5.2 x 2.3 x 8.9 in (13.3 x 5.8 x 22.6 cm) includes barb fittings
Weight2.6 lb (1.18 kg)
AccessoriesUser manual on USB flash drive, isokinetic probe, temperature relative humidity sensor, filter, battery, data download software, USB cable, power supply & cable
Optional AccessoriesPrinted manual, spare battery, external battery charger, external printer and isokinetic probes
Buffer MemorySecurely stores up to 45,000 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 Conditions41-104ºF (5-40ºC) / 20% to 95% non-condensing
Storage Conditions32-122ºF (0-50ºC) / Up to 98% non-condensing
Warranty2 Year Limited Warranty (Extended and Lifetime Warranties available)


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


Temperature and Humidity Probe
Part Number: EE-80014A


Remote Mounting Bracket Part Number: AS-99001


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


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


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


Tubing (per foot)
1/4" OD (1/8" ID)
Part Number: AS-99018


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


Tubing (per foot)
1/4" OD (1/8" ID) Bev-A-Line XX
Part Number: AS-99036


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


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


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


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


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


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


5000 Series
User Manual (Printed)
Part Number: MN-24004P


5000 Series
Validation Manual
Part Number: MN-24006


IMS Software & User Manual (USB Key)
Part Number: MN-24004