Exploring Airflow Measurement Technologies in Laminar Flow Cleanroom Environments

Exploring Airflow Measurement Technologies in Laminar Flow Cleanroom Environments

Laminar Flow refers to air moving in a unidirectional, stable, and low-velocity manner. It is critical in surgical settings, aseptic processing, and wafer fabrication. Traditionally, designers rely on regulations to install HEPA filters, FFU units, and ensure sufficient air changes to maintain cleanliness. However, in practice, non-uniform face velocities and obstructions from personnel and equipment often cause turbulence or "dead zones," allowing contaminants to accumulate.

Laminar flow is a high-level airflow control strategy used in cleanroom design, especially in aseptic drug production, biomedical testing, surgical spaces, and micro-contamination-sensitive processes. It is characterized by uniform, stable, low-velocity, and unidirectional airflow—either vertical or horizontal—aimed at swiftly removing particles from the operation zone and avoiding stagnation or turbulence that may compromise cleanliness. In such environments, face velocities are typically maintained within the 0.3 to 0.45 m/s range, requiring sustained, directional, and stable flow fields.

To address common user pain points such as undetected insufficient airflow or directional bias causing back-contamination, the FDM06-L provides real-time detection and output signals (Modbus, 4–20 mA, Relay). It can be integrated with FFU controllers or alarm systems. The plug-and-play modular design with on-site LCD display also facilitates airflow tuning and compliance validation directly on-site.