HM-CLZ1 Online Dust Particle Counter

Product Introduction

The HM-CLZ1 is an online dust particle counter from HM Instruments, designed for permanent installation in cleanrooms and controlled areas where airborne particle concentration has to be recorded continuously rather than spot-checked. A single sampling cycle measures six particle size channels at once — 0.3, 0.5, 1.0, 3.0, 5.0 and 10.0 µm — at a fixed sampling volume of 2.83 L/min (0.1 cfm), and the instrument displays both the count of each channel and how that count is changing over time.

Confidence-level evaluation follows the conditions specified in the Chinese national standard GB/T 6167-2007 and the calibration specification JJF-1190-2008, so the purification level is judged automatically instead of being calculated by hand. Counts are computed at 95% confidence (UCL) and can be converted to particles per m³ or per ft³. Built-in temperature, humidity and ambient pressure sensors record the environmental context of every sample. The unit suits pharmaceutical plants, drug inspection institutes and hospitals, semiconductor and precision machining workshops, food processing lines, filter manufacturers, and optical, aerospace and bioengineering cleanrooms.

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 continuous monitoring

Functional Performance

1. Six particle size channels measured in one sampling pass, from 0.3 µm up to 10.0 µm.
2. Automatic purification level judgment based on national, ISO, 209E and GMP cleanliness classifications.
3. Results calculated at 95% confidence (UCL) and convertible between m³ and ft³.
4. Integrated temperature, humidity and ambient barometric pressure sensors.
5. Acousto-optic alarm triggered by user-defined particle count thresholds.
6. Light-scattering sensor design that suppresses stray light inside the optical cavity for a higher signal-to-noise ratio.
7. Imported semiconductor laser diode light source rated for more than 30,000 hours of service.
8. Android 7.1 platform with a 7-inch colour touchscreen for direct on-machine operation.
9. Wi-Fi and LAN cable upload to the cloud platform, plus driver-free USB flash drive copying.
10. Supervision platform client for long-term and short-term cleanliness trend analysis.
11. Timed and continuous sampling modes with a sampling period from 10 seconds to 99 hours.
12. Internal storage for 1 to 100,000 records, searchable and exportable on site.

For a broader view of how the HM-CLZ1 online particle counter is deployed across regulated cleanroom classes, see our cleanroom monitoring application notes.

Main Parameters

Item	Specification
Sampling method	Timed detection, continuous detection
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)
Cleanliness standards	National standard, ISO, 209E, GMP
Light source	Imported semiconductor laser diode (life over 30,000 hours)
Screen display mode	7-inch colour touchscreen
Host size	210 × 150 × 65 mm (L × W × H)
Host weight	1.8 kg

Technical Parameters

Item	Specification
Self purification time	≤ 10 min
Particle size distribution error	0.5 µm ≤ ±30%
Particle concentration indication error	0.5 µm ≤ ±30%
Measurement repeatability relative deviation	< 10%
Sampling period	10 seconds – 99 hours
Sampling delay	≤ 60 s
Measurement interval	≤ 60 s
Operating environment	0–40 °C, 10–75% RH
Humidity sensor	0–100% RH, error ±2% RH, repeatability 0.1% RH
Temperature sensor	-40–85 °C, error ±0.3 °C, repeatability 0.1 °C
Barometric pressure	300–1100 hPa, accuracy ±1 hPa, resolution 0.1 hPa
Data communication	Standard USB, Wi-Fi, RS485, LAN
Data memory capacity	1–100,000 records, searchable and exportable
Power parameters	12 V / 3 A
Power	30 W
Packing size	350 × 150 × 300 mm
Packing weight	2.8 kg

Expert Review

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