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Temtop PMD 351 – Industrial Air Quality Monitor Handheld PM Sensor PM1.0, PM2.5, PM4.0, PM10
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Overview & Target Applications
The Temtop PMD 351 is a battery-operated, handheld aerosol mass monitor and particle counter, engineered for robust performance in field and industrial settings. With five simultaneous channels (PM1.0, PM2.5, PM4.0, PM10, and TSP), it offers comprehensive particulate mass concentration tracking in real time. At approximately 850 g (32 oz) and measuring around 170 × 110 × 48 mm, the PMD 351 is compact yet rugged—ideal for environments like chemical plants, mines, cleanrooms, and HVAC system audits
Sensor Technology & Measurement Range
Employing laser light scattering (780 nm, 50 mW), the PMD 351 delivers accurate mass readings across its five channels. It measures particulate concentration in the 0–1000 µg/m³ range, reports resolution of 0.1 µg/m³, and achieves ±10% accuracy—making it precise enough for environmental assessments and industrial hygiene validations Temtop. It samples at a flow rate of 2.83 L/min (0.1 CFM) and updates measurements every one minute
Storage, Display & Interface
Equipped with a 4.0″ color TFT LCD screen and user-friendly panel of seven front buttons, the unit allows users to view multi-channel data at a glance. It stores up to 2,000,000 readings internally, enabling long-term logging without external devices. Data export is made simple via a USB port, while newer units may support RS‑485 in addition to RS‑232 for more advanced data networking
Power, Battery & Portability
The PMD 351 runs on a high-performance rechargeable lithium battery, offering about 8 hours of continuous operation per full charge, which takes approximately 3.5 hours to complete. Its lightweight design and long run time make it ideal for mobile inspections, site audits, and exposure monitoring in remote or industrial environments
Build Quality and Standards Compliance
Featuring an all-metal precision optical-mechanical chassis, the PMD 351 is engineered to resist electromagnetic and physical interference. The product aligns with cleanroom and IAQ (indoor air quality) industry requirements and is compliant with relevant measurement certifications—ensuring consistency in high-sensitivity environments like manufacturing, labs, and environmental monitoring
Deliverables, After‑Sales & Value Proposition
When purchased new, the PMD 351 is typically bundled with a protective case, USB flash drive, RS‑485 converter cable, AC power cord, filter tube, and user manual. Temtop products are covered by a 1-year warranty, and often include 2 years of free calibration service. With a competitive price point (~US $1,299–1,499 depending on vendor) and professional-grade capability, the PMD 351 offers excellent value for industrial, HVAC, and environmental professionals
Temtop PMD 351 Tech Specs
| Your Purchase Includes | Includes 1 × Temtop PMD 351 Air Quality Monitor, Calibration Certificate, USB Cable, User Manual |
|---|---|
| Warranty | 1 Year |
| Color | Black |
| Dimensions L × W × H (inch) | 6.7 × 4.3 × 1.9 |
| Display | 4.0″ Color TFT LCD with physical buttons |
| Particle Size Channels | PM1.0, PM2.5, PM4.0, PM10, TSP |
| Particle Sensor | Laser diode (780 nm, 50 mW), based on Mie scattering |
| Flow Rate | 2.83 L/min (0.1 CFM) |
| Measurement Range | 0–10,000 µg/m³ |
| Accuracy | ±10% |
| Battery Capacity | 4200 mAh (Rechargeable Lithium Battery) |
| Battery Life | Up to 8 hours of continuous use |
| Power Supply | DC 5V (USB Charging) |
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