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) |
| Model | 5301P | 5501P |
| Size Range | 0.3 to 25.0 μm | 0.5 to 25.0 μm |
| Size Channels | Factory calibrated at 0.3, 0.5, 1.0, 2.5, 5.0, 10.0 μm variable binning | Factory calibrated at 0.5, 0.7, 1.0, 2.5, 5.0, 10.0 μm variable binning |
| Counting Efficiency | 50% @ 0.3 μm; 100% for particles >0.45 μm per JIS | 50% @ 0.5 μm; 100% for particles >0.75 μm per JIS |
| Concentration Limits | 15,000,000 particles/ft3 @ 10% coincidence (per ISO 21501-4), | |
| 30,000,000 particles/ft3 @ 10% coincidence (as tested and validated1) | ||
| Flow rates | 0.1 CFM (2.83 LPM) | |
| Light Source | Long life laser diode | |
| Zero Count | <1 count / 60 minutes (<1 particles / 6 ft3). No fault count subtraction. | |
| Count Modes | Real-Time Meter and graph, cumulative/differential count/m3 and count/ft3, and mass concentration (PM) | |
| Count Alarms | 1 to 9,999,999 counts | |
| Calibration | NIST traceable | |
| Display | 4.3″ (10.9 cm) WQVGA (480×272) color touch screen | |
| Printer (Optional) | External thermal printer available | |
| Internal Vacuum Pump | Internal pump with automatic flow control | |
| Airflow | Internally monitored with HEPA filtered exhaust | |
| Number of Channels | 6 | |
| Custom Size Channels | Calibration for custom size channels available | |
| Audible Alarm | Adjustable integrated alarm | |
| Communication Modes | Ethernet, USB, Wireless 802.11 b/g (Optional), RS485 or RS232 | |
| Optional Environmental Sensor | Includes temperature (32-122°F, ±1°F / 0-50°C, ±0.5°C) and relative humidity probe (15–90% RH, ±2%) | |
| Alarm | Alarms for particle counts (any size channel), sensor failure, environmental sensors, and flow rate | |
| Standards | ISO 21501-4 and JIS B9921 | |
| Calibration | Recommended minimum once per year | |
| External Surface | Stainless 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 | |
| Weight | 2.6 lb (1.18 kg) | |
| Accessories | User manual on USB flash drive, isokinetic probe, temperature relative humidity sensor, filter, battery, data download software, USB cable, power supply & cable | |
| Optional Accessories | Printed manual, spare battery, external battery charger, external printer and isokinetic probes | |
| Buffer Memory | Securely stores up to 45,000 records with particle counts, environmental data, locations, and timestamps | |
| Sample Locations | Up to 1,000 locations 20 characters long | |
| Sample Time | 1 second to 99 hours | |
| Power | 110 to 240 VAC 50/60 Hz universal in-line power supply | |
| Operating Conditions | 41-104ºF (5-40ºC) / 20% to 95% non-condensing | |
| Storage Conditions | 32-122ºF (0-50ºC) / Up to 98% non-condensing | |
| Warranty | 2 Year Limited Warranty (Extended and Lifetime Warranties available) | |
1- Validated by independent analysis see paper available at www.particlesplus.com/aac2022_paper
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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 |
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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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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 |
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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 |
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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 |
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IMS Software & User Manual (USB Key) Part Number: MN-24004 |