2501P Remote Airborne Particle Counter

Particles Plus Remote Particle Counters

9000 Series vs. 2000 Series Comparison

particles plus 2000P series remote particle counter

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.

Measures 0.5 μm to 25.0 μm
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 vacuum pump
Internal HEPA filter
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 limited warranty. Extended warranties available.
Size Range0.5 to 25.0 μm
Size ChannelsFactory calibrated at 0.5, 1.0, 2.5, 5.0 μm
Number of Channels4
Counting Efficiency50% @ 0.5 μm; 100% for particles > 0.75 μm per JIS
Flow Rate0.1 CFM (2.83 LPM)
Concentration Limits15,000,000 Particles/ft3 @ 10% coincidence loss
Light SourceLong life laser diode
Zero Count< 1 count / 60 minutes (< 1 particles / 6ft3). No fault count subtraction.
CalibrationNIST traceable
Vacuum SourceInternal Vacuum Pump
AirflowInternally monitored
Filtered ExhaustInternal HEPA filter
AlarmUser configurable alarm light
Communication ModesMODBUS™ RTU or ASCII outputs (over isolated RS-485)
StandardsISO 21501-4 and JIS B9921
Instrument CalibrationRecommended minimum once per year
External SurfaceStainless 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
Weight1.94 lb. (0.88 kg)
AccessoriesWiring Connector, operating manual on USB flash drive
Optional AccessoriesPower Supply, Remote Mounting Bracket, Isokinetic Probe, Filter Assembly, and Sample & Vacuum Tubing
Sample Time1 second to 18 hours
Power9 - 24 VDC (< 2.5 watts)
Operating Conditions41° to 104°F (5° to 40°C) / 20% to 95% non-condensing
Storage Conditions32° to 122°F (0° to 50°C) / Up to 98% non-condensing
Warranty2 year limited warranty. Extended warranties available.

Particles Plus 2301P and 2501P Diagram

AS 99001 5000 Series Remote Mounting Bracket
AS 99002A Filter Assembly 0.1 CFM 2.83LPM
EE 80081 Power Supply 12V 2A 100 240 VAC
PS 12022 Isoprobe Barbed 0.1 CFM 2.83 LPM Stainless

Remote Mounting Bracket 2000/9000 Series
Part Number: AS-99081

Filter Assembly
0.1 CFM (2.83 LPM)
Part Number: AS-99002A

Power Supply 12VDC @ 1Amp
100-240 VAC 50/60Hz
Part Number: EE-80148

Isoprobe Barbed 0.1 CFM (2.83
LPM) Stainless Steel
Part Number: PS-12022

AS 99036 Tubing .250 OD .125 ID Bev A Line XX per foot
AS 99018 Sample Tubing .250 OD x .125 ID
AS 99036 Tubing .250 OD .125 ID Bev A Line XX per foot
AS 99019 Sample Tubing .375 OD x .250 ID

Tubing 1/4" OD (1/8" ID)
Bev-A-Line XX per foot
Part Number: AS-99036

Tubing 1/4" OD (1/8" ID)
Urethane per foot
Part Number: AS-99018

Tubing 3/8" OD (1/4" ID) Bev-A-
Line XX per foot
Part Number: AS-99037

Tubing 3/8" OD (1/4" ID) Urethane per foot
Part Number: AS-99019

AS 99088A 1
PP Manual 1
PP Manual 1
MN 2400X Instrument Management Software User Manual

USB to RS-485 Adapter
Part Number: AS-99088A

Series with Pump
User Manual (Printed)
Part Number: MN-24028P

Series Validation
Part Number: MN-24034

2000/2000P Series
User Manual and PPD-9K Software (USB Key)
Part Number: MN-24028