HM-CL3 Dust Particle Counter

Product Introduction

The HM-CL3 is the high-flow benchtop dust particle counter from HM Instruments, designed for cleanroom and controlled-environment facilities that need to collect the ISO 14644-1 minimum sample volume per location in a single pass rather than accumulating multiple short counts. At 28.3 L/min (1 cfm), the HM-CL3 draws ten times the air volume per minute compared to the 2.83 L/min models, so a location that requires 1,000 litres of sample air is completed in about 35 seconds instead of nearly six minutes. A single sampling pass simultaneously measures 0.3, 0.5, 1.0, 3.0, 5.0 and 10.0 µm particle size channels.

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. The external high-flow filter provides instrument self-purification between sampling locations without relying on the room's own filtered air supply. For comparing models in the series, see the HM-CL3 high-flow 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. 28.3 L/min (1 cfm) high sampling volume — ten times the air volume per minute of the HM-CL1 and HM-CL2, collecting the ISO 14644-1 minimum sample volume per location in a single pass.
2. External high-flow filter for instrument self-purification between sampling locations, independent of the room's own filtered air supply.
3. Six particle size channels measured in one sampling pass, from 0.3 µm up to 10.0 µm.
4. 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.
5. Audit trail function, queryable, traceable and controllable, compliant with FDA 21CFR PART11 specification.
6. Built-in new generation high-speed thermal printer, selectable particle size channels for flexible result printing.
7. Automatic purification level judgment based on national standard, ISO, 209E and GMP classifications.
8. Results calculated at 95% confidence (UCL) and convertible between m³ and ft³.
9. Integrated temperature, humidity and ambient barometric pressure sensors.
10. Light-scattering sensor design that suppresses stray light inside the optical cavity.
11. Imported semiconductor laser diode light source rated for more than 30,000 hours.
12. Android 7.1 platform with a 7-inch colour touchscreen.
13. Sampling modes: single, repeated (≤99 times, custom), continuous; period 1 s to 30,000 s.
14. WiFi data upload to the supervision platform, plus driver-free USB flash drive copying.
15. Particle count alarm triggered by user-defined thresholds.
16. Internal storage for 1 to 100,000 records, searchable and exportable.
17. Convenient telescopic pan tilt bracket for easier installation and sampling operation.

Main Parameters

Item	Specification
Sampling method	Single, repeated (≤99 times, custom), continuous
Sampling volume	28.3 L/min (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)
Self-purification	External high-flow filter
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	External high-flow filter
Particle size distribution error	0.5 µm 5 µm ≤ ±30%
Particle concentration indication error	0.5 µm ≤ ±30%
Measurement repeatability relative deviation	< 10%
Cleanliness standards	National standard, ISO 14644, FS 209E, GMP
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

Address of this article：https://www.kjhm.net/jkyq2/hm-cl3-dust-particle-counter.html

• Previous: HM-CL2 Dust Particle Counter
• Next: HM-CL1 Dust Particle Counter