HM-H4 Particulate Air Sampler

Product Introduction

The HM-H4 is a dedicated particulate air sampler from HM Instruments, engineered specifically for TSP, PM10, and PM2.5 sampling without the added complexity of gaseous sampling channels. Designed as the entry-level model in the HM-H series, it concentrates all resources on delivering precise and reliable particulate matter collection at the most accessible price point of $600. The instrument features a particulate sampling flow range of 10–130 L/min with accuracy better than ±2.5%, flow stability better than ±2.0%, and automatic measurement of pre-gauge temperature and atmospheric pressure for standard-condition volume calculation. Weighing approximately 4.0 kg with compact dimensions of 165×330×275 mm, the HM-H4 is easy to transport between monitoring sites. Power failure protection ensures data integrity during field campaigns, while the sampling timer with accuracy better than ±0.2% supports both short-term and extended-duration sampling protocols.

Applications

• Environmental air quality monitoring — TSP, PM10, and PM2.5 concentration measurement at urban and industrial sites
• Workplace particulate exposure assessment — industrial hygiene monitoring in factories and construction sites
• Indoor air quality evaluation — particulate level assessment in offices, schools, and public buildings
• Emission source monitoring — stack and fugitive dust sampling at industrial facilities
• Research and academic studies — atmospheric aerosol characterization and source apportionment
• Emergency environmental response — rapid particulate monitoring during pollution incidents

Key Features

1. Dedicated particulate-only design eliminates unnecessary gaseous channels, focusing exclusively on TSP/PM10/PM2.5 collection.
2. Particulate sampling flow range of 10–130 L/min with accuracy better than ±2.5% ensures compliance-grade measurements.
3. Flow stability better than ±2.0% maintains consistent sample volume throughout extended sampling periods.
4. Automatic measurement of pre-gauge pressure and atmospheric pressure for real-time standard-condition volume calculation.
5. Sampling time range from 1 minute to 99 hours 59 minutes with accuracy better than ±0.2%.
6. Power failure data protection with automatic resume after power restoration safeguards long-duration sampling results.
7. Compact dimensions of 165×330×275 mm and approximately 4.0 kg weight for easy field portability.
8. Low noise operation below 60 dB(A) suitable for residential and institutional environments.
9. Dual power supply supporting AC220V±10% 50Hz mains or DC29.4V/5A external battery for flexible deployment.
10. Entry-level pricing at $600 providing professional particulate sampling capability at the most accessible cost.

Main Parameters

Technical Parameters

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