The TSI 9535 VelociCalc Hot Wire Anemometer offers an accurate, long-life hot wire anemometer for commissioning and maintaining HVAC systems. Capable of measuring from 0 to 6000 ft/min, the TSI 9535 can handle both residential and commercial ventilation applications. With built-in calculations, the 9535 also easily converts the measured air velocity into delivered air flow (air volume). In addition to air velocity and flow, the 9535 VelociCalc simultaneously displays air temperature from 0 to 200 F.

Other features of the TSI 9535 VelociCalc Hot Wire Anemometer include the ability to data log over 12,000 samples for later recall, or for download via the included software and cable. Samples can be logged in intervals of 1 second to 1 hour. Additionally, the 9535 offers a user selectable time constant for better averaging in fluctuating flow conditions.