HM-CL2 Dust Particle Counter

Product Introduction

The HM-CL2 is the mid-range benchtop dust particle counter from HM Instruments, designed for cleanroom and controlled-environment facilities that need six-channel airborne particle measurement together with battery portability, audit trail logging and on-site report printing in a single instrument. A single sampling pass at 2.83 L/min (0.1 cfm) simultaneously measures 0.3, 0.5, 1.0, 3.0, 5.0 and 10.0 µm particle size channels, and the instrument displays both the count of each channel and how that count is changing over time.

Confidence-level evaluation follows GB/T 6167-2007 and JJF-1190-2008, so the purification level is judged automatically. Counts are computed at 95% UCL and convertible between m³ and ft³. The audit trail function is queryable, traceable and controllable, compliant with FDA 21CFR PART11, so every sampling run, configuration change and user login is logged. The built-in thermal printer lets operators print selected particle size channels on the spot, and the AC/DC dual-use battery supports continuous sampling for more than six hours away from wall power. For comparing models in the series, see the HM-CL2 particle counter model comparison.

Applications

• Pharmaceutical industry — pharmaceutical plants, drug inspection institutes and hospitals
• Electronics industry — semiconductor fabs and precision machinery production and machining
• Food hygiene — dairy, plastic-sealed meat, seasoning and agricultural product fine processing
• Filter manufacturers — verifying filter quality and filtration efficiency
• Optical and aerospace fields — fine machining and precision testing cleanrooms
• Bioengineering laboratories and other clean areas requiring particle counting

Functional Performance

1. AC/DC dual use with built-in rechargeable lithium battery (74 Wh, 16.8 V/5 Ah), supporting continuous sampling for more than 6 hours.
2. Audit trail function, queryable, traceable and controllable, compliant with FDA 21CFR PART11 specification.
3. Built-in new generation high-speed thermal printer, selectable particle size channels for flexible result printing.
4. Convenient telescopic pan tilt bracket for easier installation and sampling operation.
5. Six particle size channels measured in one sampling pass, from 0.3 µm up to 10.0 µm.
6. Automatic purification level judgment based on national standard, ISO, 209E and GMP classifications.
7. Results calculated at 95% confidence (UCL) and convertible between m³ and ft³.
8. Integrated temperature, humidity and ambient barometric pressure sensors.
9. Light-scattering sensor design that suppresses stray light inside the optical cavity.
10. Imported semiconductor laser diode light source rated for more than 30,000 hours.
11. Android 7.1 platform with a 7-inch colour touchscreen.
12. WiFi data upload to the supervision platform, plus driver-free USB flash drive copying.
13. Sampling modes: single, repeated (≤99 times, custom), continuous; period 1 s to 30,000 s.
14. Particle count alarm triggered by user-defined thresholds.
15. Internal storage for 1 to 100,000 records, searchable and exportable.

Main Parameters

Item	Specification
Sampling method	Single, repeated (≤99 times, custom), continuous
Sampling volume	2.83 L/min (0.1 cfm)
Six particle size channels	0.3, 0.5, 1.0, 3.0, 5.0, 10.0 (µm)
Maximum sampling concentration	35,000 particles/L (particle size ≥ 0.5 µm)
Power supply	AC/DC dual use, built-in lithium battery 74 Wh (16.8 V/5 Ah)
Light source	Imported semiconductor laser diode (life over 30,000 hours)
Screen display mode	7-inch colour touchscreen
Host size	185 × 220 × 200 mm (D × W × H)
Bare weight	3.25 kg

Technical Parameters

Item	Specification
Self purification time	≤ 10 min
Particle size distribution error	0.5 µm 5 µm ≤ ±30%
Particle concentration indication error	0.5 µm ≤ ±30%
Measurement repeatability relative deviation	< 10%
Operating environment	15–35 °C, 10–85% RH
Sampling period	1 second – 30,000 seconds (user-set)
Sampling delay	≤ 60 s
Measurement interval	≤ 60 s
Built-in battery	74 Wh (16.8 V/5 Ah) rechargeable lithium battery
Charging time	2 hours
Design working time	8 hours
Average power	7.5 W
Charger	50 W (16.8 V/3 A)
Audit trail	Queryable, traceable, controllable, FDA 21CFR PART11 compliant
Thermal printer	Built-in, selectable particle size channels
Data communication	WiFi, standard USB
Data memory capacity	1–100,000 records, searchable and exportable
Operating system	Android 7.1
Alarm function	Particle count alarm via user-set parameters
Outline dimensions	185 × 220 × 200 mm (D × W × H)
Bare weight	3.25 kg
Packing size	460 × 265 × 420 mm
Packing weight	8.6 kg
Reference standards	GB/T 6167-2007, JJF-1190-2008, ISO 14644, FS 209E, GMP (dynamic/static)

Expert Review

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