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TSI / Airflow LCA501

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The TSI / Airflow LCA501 is a hand held digital 100mm diameter rotating vane anemometer used for air velocity and volumetric flow measurements. Typical applications include:-

- Supply and extract grilles and flow hood balancing
- HVAC commissioning and trouble shooting
- Laboratory safety monitoring
- Air conditioning and ventilation duct checks


Instrument overview

  • Measures both air velocity and temperature
  • Sweep mode for one overall measurement
  • Log, store and recall data
  • Download data to a PC
  • Optional telescopic probe available
  • Clear digital display

The LCA501 product can be supplied with an optional rectangular and circular Aircone kit which turns the instrument into an air volume balancing tool. For testing ventilation systems to Part F of the UK Building Regulations this product requires the use of the optional Aircone kit which must be UKAS calibrated for air volume.


Velocity measurement range     0.25 to 30 m/s

Temperature range      0 to 60 °C

Velocity display resolution     0.01 m/s

Temperature display resolution     0.1 °C

Velocity accuracy      ±1 % reading ±0.02 m/s

Volumetric flow accuracy      None stated by manufacturer

Logging interval     1 second to 1 hour

Memory      12,700 samples

Temperature accuracy      ±0.5 °C

Storage temperature  -20 to 60 °C

Operating temperature (vane head)      0 to 60 °C

Dimensions (meter)      84 mm × 178 mm × 44 mm

Weight      270 g


The Instrument Solutions Hire models are all provided as standard with a telescopic handle extension.

The TSI / Airflow LCA501 model is an equivalent product to the TSI 5725 Velocicalc instrument.

TSI / Airflow LCA301
TSI / Airflow LCA301
TSI / Airflow LCA301 anemometer, carry case, batteries, manual and calibration certificate

Support documents

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TSI / Airflow LCA301 & LCA501 data sheet.pdf TSI / Airflow LCA301 & LCA501 data sheet
Technical document
File type
Adobe Acrobat
Download (1 MB)
TSI / Airflow LCA501 user manual.pdf TSI / Airflow LCA501 user manual
Technical document
File type
Adobe Acrobat
Download (787 KB)

Common customer questions & answers

QQuestion What is the length of the optional telescopic extension handle?
AAnswer The length of the handle fully extended is 0.98m.