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2301 and 2501 Remote Airborne Particle Counters 0.1 CFM (2.83 LPM)
2301 and 2501 Remote Airborne Particle Counters 0.1 CFM (2.83 LPM)
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The 2301 and 2501 particle counters provide a range of particle size measurement from 0.3 or 0.5 to 25.0 μm at a flow rate of 0.1 CFM (2.83 LPM). These sensors allow for efficient particle counting with specifications that exceed the ISO 21501-4 and JIS B9921 calibration standards.
These sensors have 4 fixed particle size channels and are equipped with an integral critical orifice and flow sensor to provide a stable flow rate from an external vacuum source. Integration into a building automation or facility monitoring system is easy via isolated RS-485 Modbus communication.
2301 and 2501: Features and Benefits
•2301: Measures 0.3 μm to 25 μm
•2501: Measures 0.5 μm to 25 μm
•0.1 CFM (2.83 LPM) flow rate
•Long life laser diode technology
•Measures up to 4 channels of simultaneous data
•Accurate in high particle concentration environments
•Internal critical orifice
•Connect using Modbus RTU/ASCII over isolated RS-485
•Complies with ISO 21501-4 and JIS B9921 standards
•Easy to clean and wipe down with minimal particle traps
•Versatile mounting options
•Alarm light
•LED Indicators
•Seamless integration into a facility monitoring system
•Lightweight stainless steel enclosure
•2 year warranty. Extended warranties available.
Specifications
| Model | 2301 | 2501 |
| Size Range | 0.3 µm to 25 µm | 0.5 µm to 25 µm |
| Size Channels | Factory calibrated at 0.3, 0.5, 1.0, and 5.0 µm | Factory calibrated at 0.5, 1.0, 2.5, and 5.0 µm |
| Number of Channels | 4 channels | 4 channels |
| Counting Efficiency | 50% @ 0.3µm; 100% for particles > 0.45 µm per JIS | 50% @ 0.5µm; 100% for particles > 0.75 µm per JIS |
| Flow Rate | 0.1 CFM (2.83 LPM) | |
| Concentration Limits | 10,000,000 particles/ft3 @ 10% coincidence (per ISO 21501-4),
20,000,000 particles/ft3 @ 10% coincidence (as tested and validated1) |
|
| Light Source | Long life laser diode | |
| Zero Count | < 1 count / 60 minutes (< 1 particles /6 ft3) | |
| Calibration | NIST traceable | |
| Vacuum Requirements | External vacuum > 15” (38.1cm) of Hg | |
| Airflow | Internally monitored | |
| 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 5.01” (9.1 cm x 4.6 cm x 12.7 cm) including probes and connectors | |
| Weight | 1.65 lb. (0.75 kg) | |
| Accessories | Wiring Connector, operating manual on USB flash drive | |
| Optional Accessories | Power Supply, Remote Mounting Bracket, Stainless Steel Barbed Isoprobe (0.1 CFM/2.83 LPM), Purge 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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