TSI 9565-P VelociCalc Multi-Function Ventilation Meters are portable, handheld, 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 TSI 9565 Series ( 9565 - comes with Air Velocity Probe model 964; 9565-A - comes with Air Velocity Probe model 966 ; 9565-X - comes with no probe; 9565-P ) also feature 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.