Kanomax 3950-00 Ultrafine Particle Counter (0.1 μm Resolution) for Semiconductor Cleanroom Monitoring

Overview

The Kanomax 3950-00 is a compact, high-sensitivity airborne particle counter engineered specifically for ultra-clean environments in semiconductor fabrication, photolithography tool integration, and critical cleanroom process monitoring. It employs calibrated laser light scattering technology to detect and size sub-micron particles with a minimum detectable diameter of 0.1 μm—enabling real-time quantification of nanoscale contamination relevant to advanced node wafer processing (e.g., EUV lithography support zones and front-end-of-line metrology bays). Unlike conventional laboratory-grade counters, the 3950-00 is designed as an embedded sensor platform: its ultra-compact form factor (150 × 163 × 228 mm), low mass (3.4 kg), and integrated sampling pump allow seamless integration into track systems, load ports, mini-environments, and automated material handling equipment. The instrument operates at a nominal flow rate of 2.83 L/min (0.1 CFM), meeting the volumetric sampling requirements defined in ISO 21501-4 for discrete particle counting in Class 1–Class 5 cleanrooms per ISO 14644-1.

Key Features

• Sub-100 nm detection capability: Dual-channel sizing at 0.1 μm and 0.3 μm enables early-stage monitoring of nucleation-mode particles critical to defect control in 5 nm and below logic/foundry processes.
• Embedded-ready architecture: No external vacuum source required; built-in diaphragm pump ensures stable flow under variable backpressure conditions typical of integrated tool interfaces.
• High-resolution 4.3-inch color touchscreen interface: Supports on-device data visualization—including cumulative (∑), differential (Δ), and histogram-based particle distribution—without external PC dependency.
• Multi-protocol digital connectivity: Native support for RS-485 (Modbus RTU), 10/100 Mbps Ethernet (TCP/IP), and dual-role USB (device mode for PC configuration; host mode for direct printing or USB flash logging).
• Configurable measurement modes: Six operational profiles—single-shot, repetitive, continuous, statistical averaging, ISO-compliant sequential sampling, and GB/T 16292-based batch reporting—support both GMP-aligned QC workflows and engineering validation protocols.
• Traceable calibration compliance: Performance validated per JIS B9921 and ISO 21501-4, including counting efficiency (50 ± 20% at 0.1 μm; 100 ± 10% at 0.15–0.2 μm PSL), size resolution (<15% CV at 0.3 μm), and false count rate (<1 count per 35 minutes).

Sample Compatibility & Compliance

The 3950-00 is optimized for dry, non-corrosive, ambient-temperature air streams typical of semiconductor fab environments. It is not intended for use with aggressive solvents, reactive gases (e.g., Cl₂, NF₃), or high-humidity saturated streams (>85% RH). Its optical design minimizes coincidence error up to 10⁷ particles/m³, making it suitable for localized monitoring near wafer handlers, reticle storage cabinets, and FOUP loadlocks. Regulatory alignment includes full traceability to national standards (JIS B9921) and international metrological frameworks (ISO 21501-4). While not FDA 21 CFR Part 11–certified out-of-the-box, audit-ready data export (CSV) and immutable timestamping (with ±1 s accuracy over 6-minute intervals) support GLP/GMP documentation requirements when deployed within validated environmental monitoring systems.

Software & Data Management

Raw measurement data—including channel-resolved counts, timestamps, location IDs (up to 99 predefined zones), and operational metadata—are stored internally in comma-separated value (CSV) format. A maximum of 10,000 records can be retained onboard and exported via USB or Ethernet. Optional Kanomax-supplied PC software (Kanomax Data Viewer v3.x) provides trend analysis, ISO classification mapping (per ISO 14644-1:2015 Annex B), and automated report generation compliant with internal SOPs. All communication interfaces support deterministic polling intervals, enabling synchronization with MES/SCADA platforms using standard Modbus TCP or custom REST API wrappers.

Applications

• Real-time particle surveillance inside photomask storage pods and SMIF/FOUP transfer chambers.
• In-situ monitoring of mini-environment airflow uniformity and filter integrity testing in stepper/scanner tool enclosures.
• Qualification of point-of-use ULPA filtration performance during tool maintenance cycles.
• Baseline characterization and trending of background particle generation from robotic end-effectors and wafer chucks.
• Supporting ISO 14644-2 surveillance testing for Grade 1 (ISO Class 3) and Grade 2 (ISO Class 4) controlled areas.
• Integration into automated environmental monitoring systems (EMS) for semiconductor front-end facilities operating under IATF 16949 or SEMI S2/S8 safety guidelines.

FAQ

What is the minimum detectable particle size, and how is it verified?
The instrument detects particles ≥0.1 μm using monodisperse PSL calibration aerosols traceable to NIST SRM 1963. Verification follows ISO 21501-4 Annex C procedures for counting efficiency and size resolution.
Can the 3950-00 operate continuously for unattended monitoring?
Yes—it supports continuous measurement mode with user-defined cycle intervals (6 seconds to 99 minutes 59 seconds) and automatic data logging to internal memory or external USB storage.
Is external power conditioning required in fab environments?
No—the unit accepts universal AC input (100–240 VAC, 50/60 Hz) and incorporates EMI filtering compliant with CISPR 11 Group 1, Class B specifications.
Does it meet ISO 14644-1 classification requirements?
While the counter itself does not “classify” a room, its metrological performance satisfies the instrumentation criteria specified in ISO 14644-1:2015 Clause 6.2 for particle counters used in cleanroom certification and surveillance.
How is firmware updated?
Firmware updates are performed via USB flash drive using Kanomax-provided signed binaries; no network-based remote update functionality is implemented to maintain system integrity in secure manufacturing networks.