Sensitivity range: 0.3 - 5.0 µm

2 Channel Air Particle Sensors

The Airnet® II and IIs 2 Channel Air Particle Sensors meet the specifications of ISO 21501-4 to measure the size and number of particles suspended in the air for real-time monitoring of defect-causing particles.

A simple and cost-effective way to monitor your cleanroom, the Airnet II Air Particle Sensor provides unparalleled performance with data transmission capabilities for remote monitoring.

Versatile power options combined with an ultra-small footprint makes the Airnet II Air Particle Sensor easy to install right where you need it. The unit can be configured to accept distributed power from an in-house system, local power plugin (Polycarbonate version only), or power over ethernet (PoE).

Data integrity is maintained through the use of a data queue feature that continues to gather data even if communication is lost due to a power outage. To ensure proper flow conditions and vacuum system operation, these units incorporate a Dynamic Flow Sensing system that will alarm with a 15% change in flow conditions.

For situations where sampling is required during the vaporized hydrogen peroxide (VHP) sterilization process, an optional VHP-compatible unit is available for a simple installation without complex valving. Download the Airnet® 510 XR Resilince to Vaporized Hydrogen Peroxide app note.

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  • 2 channels
  • 0.5 and 5.0 μm size range, suitable for Pharmaceutical application
  • 1.0 CFM flow rate
  • Modbus communications
  • Optional 4-20 mA output (Polycarbonate version only)
  • Chemical-resistant polycarbonate (PC) enclosure or Stainless Steel 316L
  • Low sample point cost
  • Small enough for use in remote locations
  • Includes system validation documentation


  • Proven technology provides reliable and accurate data
  • Allows for immediate reaction to particle contamination events
  • A low-cost solution for multipoint monitoring
  • Interfaces with Facility Net and FacilityPro Software for comprehensive management of cleanroom conditions
  • A small footprint and flexible mounting options make it easy to install in cleanrooms and mini-environments
  • A solid state laser diode (LD) drastically reduces the need for maintenance and extends product lifecycle
  • Automatic laser shutdown reduces laser failures
  • Data queue maintains data integrity when communication is lost
  • Optional 4-20 mA output for integration with existing systems to help you understand your environment and communicate with other systems (Polycarbonate version only)
  • Optional XR coating protects sensors against corrosive or oxidizing vapors in VHP sterilization processes


  • Cleanroom monitoring
  • Dedicated monitoring of critical locations
  • Trend analysis
  • Statistical process control
  • Multi-location monitoring
  • Isolator monitoring

Supporting Materials

a. Minimum and maximum interval are used to define two different sample interval. The minimum sample interval is used by the instrument when at least 1 particle is detected during the sample. in case the instrument will count “0” during the sample, then the “maximum” sample interval is used by the instrument till at least one particle will be detected. This function was implemented in the past as method for data storage space saving. In other words, if the instrument will not count any particles for 3600 seconds (60 minutes), will simply don’t provide any data output; the data output string you will then get when the maximum sample interval will be reached will report the total sample time with the particle result (in this case “0”) b. Considering the actual hard drive technology and cost, this method can be considered negligible and the you can simply configure the instrument with the same sample interval (minimum and maximum), so you will have a data output updated every XX seconds (normally 60) despite the counting level. It is possible and means that your clean room are well designed and operating. As example, semiconductor cleanroom can reach cleanness performance of 0 particles @ 0.1um for more than one cubic meter of air (more than 35 minutes sample). Anyway, the instrument is equipped with a special algorithm which control the detector operation. In other words, if the instrument will not detect particles for an unreasonable time, you will receive an instrument alarm and the unit will need to be evaluated by our service center. a. Data queuing is a very important functionality designed to guarantee reliable data communication. b. This parameter, when configured with a value different from 0, allow the instrument to automatically send out the data when the communication is restored after a communication lost. In example, configuring the data queue to 480 samples, in the unlikely case of communication lost, the instrument will continue to up to 480 (or different, depending on the configuration) sample data; as soon as the communication will be restored you will be able to collect all the stored data to your software.

Available Accessories

Sample Tubing (1.0 CFM)

Sample Tubing (1.0 CFM)

10 ft (3.05 m) sample tubing for instrument applications.

Facility Net

Facility Net

Facility Net provides a solution for comprehensive environmental monitoring, including a real-time and historical data display. Compatible Particle Measuring Systems particle counters and molecular contamination monitors, as well as various third-party products.

FacilityPro® Software

FacilityPro® Software

FacilityPro® Software provides the interface, data management, and reporting for an environmental monitoring system. FacilityPro's ability to manage viable, nonviable and environmental data through a common system improves the efficiency of production operations and quality investigations.

IsoAir® Protection System

IsoAir® Protection System

The IsoAir® Protection System protects your particle counter with a polycarbonate (PC) cover and stainless steel enclosure so you don't have to remove it from its environment. Featuring a capped probe, the IsoAir Protection System even stays protected during sterilization.

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