HM-H2 Constant Temperature Air Particulate Sampler

Product Introduction

The HM-H2 is a constant temperature and constant flow air particulate sampler manufactured by HM Instruments, designed for simultaneous gaseous pollutant and particulate matter collection in ambient air. Integrating a thermostatic gaseous sampling channel with a particulate sampling channel in a single compact unit, the HM-H2 ensures consistent sample integrity throughout extended monitoring periods. The particulate sampling channel delivers a flow range of 10 to 130 L/min with accuracy better than ±2.0%, while the constant temperature gaseous channel maintains stable flow for absorption-based gas sampling. With flow stability better than ±2.0%, pre-gauge pressure measurement from -35 to 35 kPa, and atmospheric pressure sensing from 50 to 110 kPa, the instrument automatically compensates for environmental variations. Sampling time ranges from 1 minute to 99 hours 59 minutes with timing accuracy better than ±0.2%. Operating noise is below 60 dB(A), making it suitable for both laboratory and field environments. Weighing approximately 4.0 kg with compact dimensions of 165 × 330 × 275 mm, the HM-H2 complies with HJ/T 376-2007 for 24-hour constant temperature automatic continuous ambient air sampling.

Applications

• 24-hour continuous ambient air quality monitoring per HJ/T 376-2007
• TSP, PM10, and PM2.5 particulate matter sampling
• SO2, NOx, and other gaseous pollutant absorption sampling
• Environmental impact assessment baseline air quality surveys
• Industrial zone perimeter air quality compliance monitoring
• Occupational health and workplace air quality assessment
• Urban air quality network station sampling

Functional Performance

1. Constant temperature and constant flow design ensures superior sampling accuracy and sample integrity for both gaseous and particulate channels.
2. Particulate sampling flow range 10 to 130 L/min with accuracy better than ±2.0%, supporting TSP, PM10, and PM2.5 collection with appropriate cutting heads.
3. Thermostatic gaseous sampling channel maintains stable absorption solution temperature for reliable SO2 and NOx sampling.
4. Flow stability better than ±2.0% across both channels for consistent volumetric accuracy.
5. Automatic measurement of pre-gauge temperature and pressure with automatic standard condition volume calculation.
6. Pre-gauge pressure range -35 to 35 kPa and atmospheric pressure range 50 to 110 kPa for comprehensive environmental compensation.
7. Sampling time from 1 min to 99 h 59 min with timing accuracy better than ±0.2%.
8. Operating noise below 60 dB(A) for laboratory and residential area deployment.
9. Dual power supply: AC220V ±10% 50Hz or DC29.4V/5A for flexible field and mains operation.
10. Power consumption below 100W for energy-efficient continuous monitoring.
11. Compact dimensions 165 × 330 × 275 mm at approximately 4.0 kg for easy transport and deployment.

Main Parameters

Technical Parameters

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