Description
The PMD 331 is a handheld 7-channel particle counter designed for precise monitoring of particle sizes from 0.3 μm to 10 μm. Its large 4-inch TFT display shows real-time data clearly, while intuitive controls and quick calibration buttons make operation simple and efficient. Lightweight and portable, it’s ideal for rapid on-site monitoring, single-point data collection, and cleanroom classification from ISO Class 5 to ISO Class 9.
Equipped with a high-capacity lithium battery, the PMD 331 provides up to 8 hours of continuous operation. It features built-in storage for 2 million data sets, with easy export via USB or RS-485. The device’s robust all-metal optical structure ensures strong anti-interference performance, making it reliable for formal classification, monitoring, and compliance with CE, ISO 21501, and JE1190-2008 standards.




