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TSI 8345 & 8346 Velocicalc

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TSI's 8345 and 8346 Velocicalc thermal anemometers are easy to use from the first time you pick them up. The meters measure velocity and temperature, and with a few simple keystrokes they calculate flowrate, perform multi-value averaging, and determine minimum and maximum readings. Typical applications include:

- HVAC duct measurements - Fume hood face velocity tests - Clean room studies - Wind tunnel work - Filter face velocity measurements

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  • Extended velocity range of 0 to 30 m/s
  • Temperature range of -17.8 to 93.3°C
  • Easy-to-read digital display
  • Variable time constant modes available for a steady display when measuring fluctuating flows
  • 94.0 cm telescopic probe with etched length marks to make duct traverse measurements easier
  • Sampling function allows for easy recording of multiple measuring points
  • Statistics function can display average, maximum and minimum values, and the number of recorded samples
  • Flowrate feature allows for simple and quick calculations of volumetric flowrate when the user inputs the duct shape and size
  • Includes a battery check that monitors battery level to ensure accurate readings


Velocity range 0 to 30 m/s

Velocity accuracy 3.0% of reading or ±0.15 m/s whichever is greater

Probe temperature range -17.8 to 93.3°C

Temperature resolution 0.1°C

Temperature accuracy ±0.3°C

Probe length 94cm

Probe diameter (Straight) 6mm at tip, 10.03mm at base

Probe diameter (Articulated) 6.4mm to articulating knuckle x 95.2mm length of articulated section

Meter dimensions 100 x 168 x 38mm

Weight 500g with batteries



TSI 8345 & 8346 user manual

  • Technical Document
  • PDF file
  • 299 KB

TSI 8345 & 8346 Velocicalc data sheet

  • Technical Document
  • PDF file
  • 147 KB



What is the difference between the 8345 and 8346 models ?


The 8345 model has a straight telescopic probe, and the 8346 model has an artifculated probe i.e. the end section can be moved through 90 degrees.

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