2501-1 and 2501-4 Remote Airborne Particle Counter

2000 Series Remote Particle Counters

Models 2501-1 and 2501-4

0.5 – 5 µm @ 0.1 CFM

The Particles Plus 2501-1 Remote Particle Counter measures 0.5 μm and 5.0 μm with a flow rate of 0.1 CFM (2.83 LPM). Integration is easy into a real-time monitoring or building management system via Modbus RTU or ASCII. The 2000 Series is the smallest remote particle counters on the market and has easy mounting options. The Particles Plus 2501-1 units comply with ISO 21501-4 and include a 2 year limited warranty.

The Particles Plus 2501-4 Remote Particle Counter measures 0.5 μm, 0.7 μm, 1.0 μm & 5.0 μm with a flow rate of 0.1 CFM (2.83 LPM). Integration is easy into a real-time monitoring or building management system via Modbus RTU or ASCII. The 2000 Series is the smallest remote particle counters on the market and has easy mounting options. The Particles Plus 2501-4 units comply with ISO 21501-4 and include a 2 year limited warranty.

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Measures 0.5 µm and 5 µm
0.1 CFM (2.83 LPM) flow rate with onboard pressure loss alarm
Long life laser diode technology
World's smallest 0.1 CFM remote particle counter
Measures 2 channels of simultaneous data
MODBUS™ RTU or ASCII Outputs
Connect using RS485 or RS232
Concentration limit of 500,000 per ft³
LED Status Indication
Complies with ISO 21501-4 and JIS B9921 standards
Seamless integration into a facility monitoring system
Light weight stainless steel enclosure
2 year warranty. Extended warranties available
Channel Sizes 0.5 μm and 5.0 μm
Counting Efficiency 50% at 0.5 μm; 100% for particles > 0.75 μm (per JIS)
Concentration Limits 500,000 particles / ft3 at 5% coincidence loss
Light Source Long life laser diode
Zero Count Level <1 count / 5 minutes (per JIS B9921)
Flow Rate 0.1 CFM (2.83 LPM)
Flow Control Critical orifice
Vacuum Requirements External vacuum >15" (38.1 cm) of Hg Calibration NIST Traceable
Sample Probe/Tubing Isokinetic sampling probe
Communication Interface Modbus™ RTU or ASCII outputs (specified upon order)
Power 9-30 VDC
Dimensions (L x W x H) 1.8” x 3.7“ x 1.5” (4.5 cm x 9.3 cm x 3.8 cm) does not include probe
Weight 0.62 lb (0.28 kg)
Standards ISO 21501-4 and JIS B9921
Warranty 2 year limited warranty
Operating Conditions 5° to 35°C 20% to 95%RH non-condensing
Storage Conditions -20° to 50°C Up to 98%RH non-condensing
Optional Accessories Isokinetic sampling probe, purge filter, data cable, vacuum and sample tubing
Measures 0.5 μm, 0.7 μm, 1.0 μm & 5.0 μm
0.1 CFM (2.83 LPM) flow rate with onboard pressure loss alarm
Long life laser diode technology
World's smallest 0.1 CFM remote particle counter
Measures 2 channels of simultaneous data
MODBUS™ RTU or ASCII Outputs
Connect using RS485 or RS232
Concentration limit of 500,000 per ft³
LED Status Indication
Complies with ISO 21501-4 and JIS B9921 standards
Seamless integration into a facility monitoring system
Light weight stainless steel enclosure
2 year warranty. Extended warranties available
Channel Sizes 0.5 μm, 0.7 μm, 1.0 μm & 5.0 μm
Counting Efficiency 50% at 0.5 μm; 100% for particles > 0.75 μm (per JIS)
Concentration Limits 500,000 particles / ft3 at 5% coincidence loss
Light Source Long life laser diode
Zero Count Level <1 count / 5 minutes (per JIS B9921)
Flow Rate 0.1 CFM (2.83 LPM)
Flow Control Critical orifice
Vacuum Requirements External vacuum >15" (38.1 cm) of Hg Calibration NIST Traceable
Sample Probe/Tubing Isokinetic sampling probe
Communication Interface Modbus™ RTU or ASCII outputs (specified upon order)
Power 9-30 VDC
Dimensions (L x W x H) 1.8” x 3.7“ x 1.5” (4.5 cm x 9.3 cm x 3.8 cm) does not include probe
Weight 0.62 lb (0.28 kg)
Standards ISO 21501-4 and JIS B9921
Warranty 2 year limited warranty
Operating Conditions 5° to 35°C 20% to 95%RH non-condensing
Storage Conditions -20° to 50°C Up to 98%RH non-condensing
Optional Accessories Isokinetic sampling probe, purge filter, data cable, vacuum and sample tubing