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TSI Model 9565

TSI Model 9565

The VelociCalc Multi-Function Ventilation Meter 9565 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 also features an ergonomic, overmolded case design with a probe holder and a keypad lockout to prevent tampering during unattended use.  The telescopic 964 probe is ideal for air flow rate measurements in IAQ and ventilation (HVAC) assessments.  Two pressure ports located on the handset allow for accurate differential pressure measurements.

The VelociCalc can be utilized for spot measurements, screening, or the use of data-logging capabilities for short-term to long-term monitoring projects.

Accurate air velocity measurement:

  • 0 to 30 m/s range (0 to 6,000 ft/min)


Differential pressure measurement:

  • -15 to +15" H2O (-28.0 to 28.0 mm Hg), resolution = 0.001" H20
  • Optional smart plug-in probes, including VOC, CO2, and rotating vane probes
  • 26,500+ samples and 100 test IDs
  • Logging interval 1 second to 1 hour
  • Battery life = 8 hours with four AA-size batteries


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