Air Velocity Meter:

The VelociCalc® Model 9565 series are portable, hand-held, Multi-Function Ventilation Test Instruments featuring 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 also features an ergonomic, overmolded case design with probe holder and a keypad lockout to prevent tampering during unattended use. These instruments are available with or without a differential pressure sensor and are designed to work with a wide range of plug-in probes.


  • 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

Features and Benefits

  • 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 set-up
  • Multiple data logging formats
  • Blue tooth communications for transferring data or remote polling
  • Includes TrakPro™ and LogDat2™ downloading software with USB cable