HM-SCL Handheld Dust Particle Counter

Product Introduction

The HM-SCL Handheld Dust Particle Counter, developed by HM Instruments, is a portable airborne particle measurement instrument engineered for cleanroom classification and air quality monitoring in controlled environments. The instrument employs a semiconductor laser light source with a rated service life exceeding 35,000 hours, enabling simultaneous particle counting across six size channels — 0.3 μm, 0.5 μm, 1.0 μm, 3.0 μm, 5.0 μm, and 10 μm — at a sampling flow rate of 2.83 L/min (0.1 CFM) with ±5% flow accuracy. A capacitive touch LCD provides operators with real-time concentration bar charts, equivalent concentration values, actual airflow readings, and current cleanliness class ratings for immediate on-site pass/fail decisions.

The instrument supports data integrity through 4 GB of internal storage accommodating 10,000 to 100,000 records, an audit trail function with multi-user and multi-level permission management, and 95% upper confidence limit (UCL) calculation in particles, particles/m³, or particles/ft³. Data can be exported via dual high-speed USB interfaces (USB flash drive and PC connection) or transmitted wirelessly through built-in WiFi. An independent Bluetooth printer enables real-time hardcopy output. The rechargeable 10,000 mAh lithium-ion battery provides over eight hours of continuous field operation. The HM-SCL complies with JJF1190-2008 and GB/T6167-2007, supporting cleanliness classification under national standard, ISO 14644, FS 209E, and GMP (dynamic and static) frameworks.

Applications

• Pharmaceutical manufacturing cleanrooms — GMP compliance verification for Grade A/B/C/D areas
• Semiconductor and electronics fabrication — ISO Class 3–7 particle monitoring during production
• Hospital operating rooms and sterile compounding — environmental quality assurance for patient safety
• Research and university cleanroom laboratories — method development and certification testing
• Air purifier and filter effectiveness verification — upstream and downstream particle counting
• Food and beverage production hygiene zones — HACCP documentation for contamination control
• Aerospace component assembly — precision clean areas where sub-micron contamination affects reliability

Functional Performance

1. Semiconductor laser light source rated for over 35,000 hours of continuous operation, ensuring long-term measurement stability without frequent source replacement
2. Six simultaneous particle size channels — 0.3, 0.5, 1.0, 3.0, 5.0, and 10 μm — covering the complete range required for ISO 14644 and GMP cleanliness classification
3. Sampling flow rate of 2.83 L/min (0.1 CFM) held to ±5% accuracy, with maximum counting concentration of 35,000 particles/L at 0.5 μm and above
4. Repetitive relative error below 10% and particle size distribution error of ±30% at 0.5 μm, delivering consistent results across repeated measurement cycles
5. Capacitive touch LCD displaying real-time concentration bar charts, equivalent concentration, actual airflow, and current cleanliness level on a single screen
6. On-screen display of time, date, measurement values, temperature, humidity, room number, sampling point, sampling count, battery level, and instrument status
7. 4 GB available storage with automatic recording, supporting 10,000 to 100,000 measurement records that are searchable and exportable via USB
8. Audit trail function with multi-user and multi-level permission management, meeting data integrity requirements for regulated environments
9. Dual high-speed USB interfaces supporting both USB flash drive export and direct PC connection for flexible data workflows
10. Built-in WiFi enabling remote data transmission to laboratory information management systems and cloud-based monitoring platforms
11. Independent Bluetooth printer support for real-time on-site printing of measurement results and certification reports
12. 95% UCL confidence calculation with selectable units — particles, particles/m³, or particles/ft³ — and cleanliness level alarm for out-of-specification alerts

Main Parameters

Parameter	Value
Light source	Semiconductor laser, service life >35,000 hours
Sampling flow	2.83 L/min (0.1 CFM), accuracy ±5%
Particle size channels	0.3, 0.5, 1.0, 3.0, 5.0, 10 μm (6 channels)
Max counting concentration	35,000 particles/L (≥0.5 μm)
Repetitive relative error	<10%
Particle size distribution error	0.5 μm ±30%
Display	Capacitive touch LCD
On-screen information	Concentration bar chart, equivalent concentration, airflow, cleanliness level
Additional display data	Time, date, measurement, temp/humidity, room no., sampling point, battery, status
Data memory	4 GB, 10,000–100,000 records, searchable and exportable
Audit trail	Multi-user, multi-level management
Data export	Dual USB (flash drive + PC), WiFi, Bluetooth printer
UCL calculation	95%, units: particles / particles/m³ / particles/ft³
Battery	Li-ion, 3.7 V, 10,000 mAh, ≥8 hours runtime
Operating temperature	0 °C – 40 °C
Operating humidity	10% – 75% RH
Storage temperature	0 °C – 45 °C
Storage humidity	0% – 90% RH
Alarm	Cleanliness level alarm
Dimensions	238 × 134 × 58 mm
Weight	0.95 kg
Package size	450 × 190 × 350 mm
Package weight	3.9 kg
Reference standards	JJF1190-2008, GB/T6167-2007
Cleanliness standards	National standard, ISO, 209E, GMP (dynamic and static)

Expert Review

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