2501P Remote Airborne Particle Counter
Particles Plus Remote Particle Counters
Model 2501P
0.5 – 25.0 µm @ 0.1 CFM
The 2501P particle counter provides a range of particle size measurement from 0.5 to 25.0 μm at 0.1 CFM (2.83 LPM) flow. These sensors allow for efficient particle counting with high accuracy and resolution that meet or exceed ISO 21501-4 and JIS B9921 for the calibration of a particle counter.
These units are equipped with an internal pump and manifold and do not require an external vacuum source. Integration into a building automation or facility monitoring system is easy via standard MODBUS RS-485 communication.
| Model | 2501P |
|---|---|
| Size Range | 0.5 to 25.0 μm |
| Size Channels | Factory calibrated at 0.5, 1.0, 2.5, 5.0 μm |
| Number of Channels | 4 |
| Counting Efficiency | 50% @ 0.5 μm; 100% for particles > 0.75 μm per JIS |
| Flow Rate | 0.1 CFM (2.83 LPM) |
| Concentration Limits | 15,000,000 Particles/ft3 @ 10% coincidence loss |
| Light Source | Long life laser diode |
| Zero Count | < 1 count / 60 minutes (< 1 particles / 6ft3). No fault count subtraction. |
| Calibration | NIST traceable |
| Vacuum Source | Internal Vacuum Pump |
| Airflow | Internally monitored |
| Filtered Exhaust | Internal HEPA filter |
| Alarm | User configurable alarm light |
| Communication Modes | MODBUS™ RTU or ASCII outputs (over isolated RS-485) |
| Standards | ISO 21501-4 and JIS B9921 |
| Instrument Calibration | Recommended minimum once per year |
| External Surface | Stainless steel |
| Dimensions (L x W x H) | 3.59” x 1.83” x 5.66” (9.1 cm x 4.6 cm x 14.3 cm) including probes and connectors |
| Weight | 1.94 lb. (0.88 kg) |
| Accessories | Wiring Connector, operating manual on USB flash drive |
| Optional Accessories | Power Supply, Remote Mounting Bracket, Isokinetic Probe, Filter Assembly, and Sample & Vacuum Tubing |
| Sample Time | 1 second to 18 hours |
| Power | 9 - 24 VDC (< 2.5 watts) |
| Operating Conditions | 41° to 104°F (5° to 40°C) / 20% to 95% non-condensing |
| Storage Conditions | 32° to 122°F (0° to 50°C) / Up to 98% non-condensing |
| Warranty | 2 year limited warranty. Extended warranties available. |
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Remote Mounting Bracket 2000/9000 Series |
Filter Assembly |
Power Supply 12VDC @ 1Amp |
Isoprobe Barbed 0.1 CFM (2.83 |
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Tubing 1/4" OD (1/8" ID) |
Tubing 1/4" OD (1/8" ID) |
Tubing 3/8" OD (1/4" ID) Bev-A- |
Tubing 3/8" OD (1/4" ID) Urethane per foot |
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USB to RS-485 Adapter |
2000/2000P |
2000/2000P |
2000/2000P Series |