VelociCalc Multi-Function Ventilation Meter 9650-NB TSI

VelociCalc Multi-Function Ventilation Meter 9650-NB TSI

Advanced Micromanometer for HVAC Testing Without Bluetooth Connectivity

The VelociCalc® 9650-NB TSI is a robust, handheld multi-function micromanometer engineered for HVAC professionals and facility engineers who need high-precision air pressure and flow measurements—without the need for Bluetooth connectivity. Designed for simplicity and reliability, this version of the 9650 provides the same advanced features as the standard model but in environments where wireless communication is restricted or unnecessary.

With its high-resolution color display and intuitive menu interface, the 9650-NB guides users through every step of setup, measurement, and data recording. VelociCalc Multi-Function Ventilation Meter 9650-NB TSI supports a wide variety of plug-in probes to measure velocity, temperature, humidity, and CO₂, and integrates seamlessly into workflows for HVAC system commissioning, balancing, IAQ studies, and ventilation assessments.

Features and Benefits

• Large color screen for real-time, multi-parameter measurement display

• Simple menu-driven navigation with multilingual support

• Compatible with thermoanemometer, rotating vane, and CO₂ plug-in probes

• Includes built-in barometric pressure sensor for air density compensation

• Supports one K-type thermocouple input

• Step-by-step guided workflows for:

  • Duct traverse measurements (ASHRAE 111, EN 12599, EN 16211)

  • Outdoor air percentage calculations (when used with IAQ probe)

  • Heat flow in BTU/hr or kW (with probe 964 or 966)

• Integrated magnets for hands-free mounting on ductwork

• Static and differential pressure measurement

• Programmable K-factors for customized airflow calculations

• Compatible with USB data export and portable USB printer (802241)

• Non-Bluetooth model ideal for sensitive environments

Applications

• HVAC system performance testing and air balancing

• Duct traverse airflow measurements using pitot tubes

• Cleanroom and biosafety cabinet certification

• Indoor air quality (IAQ) investigations

• Heating and cooling coil heat transfer testing

• Building commissioning and ventilation effectiveness

Specifications

• Model: 9650-NB

• Differential Pressure Range: ±3735 Pa (±15 in. H₂O)

• Display: Full-color high-resolution LCD

• Inputs: 1 K-type thermocouple

• Connectivity: USB (No Bluetooth)

• Battery: 4 AA alkaline batteries

• Languages: Multiple

• Data Output: USB printer or PC

Included Items

• VelociCalc 9650-NB instrument

• Static pressure probe

• 8 ft (2.4 m) tubing

• USB cable

• Wrist strap

• Carrying case

• User manual and calibration certificate