Alnor Velometer Thermal Anemometers

Low-velocity airflow defines many critical zones in life sciences. The Alnor Velometer Thermal Anemometer measures these flows with sensitivity and speed, enabling technicians to quantify downflow and inflow, study airflow patterns, and document performance across cleanrooms, biosafety cabinets (BSCs), and clean benches.

Optimized for Low Velocities

• Thermal sensing technology provides high resolution where vane sensors are less effective.
• Slim probes access tight locations at diffusers, work surfaces, and inflow grids without disturbing local patterns.
• Fast response supports scan studies and mapping activities that require dense data sets.

Core Life Science Applications

• BSC certification: Measure inflow and downflow velocities to support checks aligned with NSF/ANSI 49 methodologies.
• Clean benches and laminar flow devices: Verify uniform downflow across work surfaces for qualification and routine monitoring.
• Cleanrooms: Map low, directional flows at workstations and validate diffuser performance in ISO-classified spaces.
• Fume hood studies: Characterize face velocities at low sash openings to complement hood performance assessments.

Measurement Workflow

• Standardize probe orientation and dwell times based on SOPs or recognized methods for consistent results.
• Use grid-based mapping to identify variability across work surfaces and diffuser faces.
• Pair velocity data with smoke visualization to interpret patterns and support root-cause analysis when needed.

Data Handling and Reporting

• Logging and export options help you capture time-stamped measurements, build trend reports, and attach evidence to qualification packages.
• Metadata fields for probe ID, operator, and location improve traceability and repeatability across audits and re-tests.

Selecting the Right Probe

• Choose straight or angled probes based on access and operator ergonomics.
• Match velocity range to expected conditions for optimal resolution.
• Consider temperature and humidity conditions when selecting configurations.

Calibration and Service

• Routine calibration helps maintain accuracy at low velocities. TSI service programs provide calibration options with traceable references to align with quality program expectations.

By delivering sensitivity, speed, and usability, Alnor Velometer Thermal Anemometers help life science teams measure what matters most in controlled environments. The instruments support commissioning, certification, and ongoing monitoring with data that informs decisions and strengthens quality documentation.