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Multi-function Ventilation Meter Environment

Multi-function Ventilation Meter

Product Code:VelociCalc 9565

Need more Info? (514) 354-2511 - 1-800-463-4363

The VelociCalc® Model 9565 series 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 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
  • Cleanroom 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 setup
  • Multiple data logging formats
  • Bluetooth communications for transferring data or remote polling
  • Includes TrakPro™ and LogDat2™ downloading software with USB cable


VelociCalc Plug-In Probes

The plug-in probes allow users to make various measurements by simply plugging in a different probe that has the features and functions best suited for a particular application. Plug-in probes for the VelociCalc series can be ordered at any time and include a data sheet with certificate of traceability. When it’s time for servicing, only the probe needs to be returned since all the calibration data is stored within the probe.


Thermoanemometer Air Velocity Probes

TSI offers four models featuring multiple measurements in a compact, robust probe design. These telescopic probes are available in straight or articulating construction, and with or without a relative humidity sensor. Models with a relative humidity sensor can also calculate wet bulb and dewpoint temperature. Common applications include duct traversing, face velocity testing of chemical fume hoods, biological safety cabinets and HEPA filters. When combined with the 9565, advanced measurement applications can be performed including heat flow, draft rate and turbulence intensity


Rotating Vane Anemometer Probe

The 4” (100 mm) rotating vane probe measures air velocity and temperature with flow calculation. Measurement applications include face velocity as well as air velocity in turbulent airstreams. An optional telescopic articulating probe and an Aircone kit are also available.


Pitot Probes and Airflow Probe 800187

Pitot probes are used to obtain air velocity and air volume measurements within ductwork by performing a duct traverse. Consult factory for sizes and part numbers. The Airflow Probe Model 800187 is an 18” (46 cm) straight Pitot probe that can be used to perform duct traverses and are ideally suited for measuring in small diameter ductwork. 


LogDat2™ Downloading Software

The VelociCalc Model 9565 Series includes downloading software called LogDat2. LogDat2 software transfers the stored data from the Model 9565 to a computer as a spreadsheet file. This software is useful for applications such as duct traverses, fume hood, and filter face velocity testing.


Data Collection and Reporting

Expanded data logging capacity and the inclusion of TrakPro Data Analysis Software provides the capabilities to work more effectively and efficiently. The 9565 can store up to 38.9 days of data collected at one-minute log intervals. The stored data can be recalled, reviewed on screen, and downloaded for easy reporting. This software is usefule for long term, unattended data logging applications such as IAQ and VOC investigations.

  • Log multiple parameters to investigate trends.
  • Store up to 38.9 days of data collected at one-minute log intervals
  • User-selectable logging intervals and start/stop times
  • Download data to TrakPro data analysis software
  • Report generation
  • Instrument programming
  • Graph creation


Multi-Function Ventilation Meter with differential pressure sensor and Thermoanemometer Probe
Cat. No Description
TSI9565 Multi-function ventilation meter 9565-P with straight air velocity probe Model 964
TSI9565A Multi-function ventilation meter 9565-P with articulated air velocity probe Model 966
Multi-function Ventilation Meter Only. Choose a probe most appropriate for your measurement needs.
Cat. No Description
TSI9565X Multi-function ventilation meter, no plug-in probes, no differential pressure sensor
TSI9565P  Multi-function ventilation meter, no plug-in probes, with differential pressure sensor, tubing and static pressure probe

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