Environmental Monitoring Solutions
The 2301 particle counter provides 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.
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2301: Measures 0.3 um to 25.0 um |
2501: Measures 0.5 um to 25.0 um |
0.1 CFM (2.83 LPM) flow rate |
Long-life laser diode technology |
Measures up to 4 channels of simultaneous data |
Particle concentrations up to 15,000,000 Particles/ft3 @ 10% coincidence loss |
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 |
User-configurable alarm light |
LED Indicators |
Seamless integration into a facility monitoring system |
Lightweight stainless steel enclosure |
2-year warranty. Extended warranties are available. |
Model | 2301 |
Size Range | 0.3 to 25.0 μm |
Size Channels | Factory calibrated at 0.3, 0.5, 1.0, 5.0 um |
Number of Channels | 4 |
Counting Efficiency | 50% @ 0.3 um; 100% for particles > 0.45 um 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 /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 4.7 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 are available. |