Enhance Productivity
Professional performance
With our HVAC and ventilation instruments


The portable, handheld VelociCalc Multi-Function Ventilation Meter 9565-P features a menu-driven user interface for easy operation in your local language. On-screen prompts and step-by-step instructions guide the user through instrument setup, operation, and field calibration. The 9565-P model has a differential pressure sensor and does not include a probe.

Features and Benefits

•    Includes differential pressure sensor
•    Best-in-class air velocity accuracy
•    Optional “smart” plug-in probes, including VOC, CO2, and rotating vane probes
•    Accommodates up to two K-alloy thermocouples 
•    Large graphic display 
•    Displays up to five measurements simultaneously
•    On-screen messages and instructions
•    Program for local language
•    Intuitive menu structure allows for ease of use and setup
•    Multiple data logging formats
•    Bluetooth communications for transferring data or remote polling
•    Includes TrakPro and LogDat2 downloading software with USB cable


•    HVAC testing and balancing
•    Clean room testing
•    Biological safety cabinet and laboratory fume hood testing
•    HVAC commissioning and troubleshooting
•    IAQ investigations
•    Thermal comfort studies
•    Ventilation evaluations
•    Process air flow testing

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