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Alnor LoFlo

Contact Instrument Solutions


The Alnor LoFlo balometer is the ideal way to measure very low volumetric flow. Confidently and accurately measure supply or extract flows from 4.7 to 236 l/s (17 to 850 m3 / h).

This light weight instrument is designed for domestic or light commercial use, and comes in three different variants with optional hood kits for different sized apertures.


  • Includes a 406 mm x 406 mm, 200 mm tall hood
  • Weighs only 3 kg with the hood attached
  • 559 mm overall height with 406 mm x 406 mm hood
  • Simulated analog display shows air trends and digital readings
  • Uses 4x C size alkaline batteries; minimum 10 hours continuous use
  • For small diffusers, the base can be used without a hood

Important note : The Instrument Solutions hire models come as standard with the 406 mm x 406 mm and 610 mm x 610 mm hood assemblies.


Air velocity range 4.7 to 236 l/s (17 to 850 m3 / h)

Air velocity accuracy ± 3 % + 2.4 l/s

Height Base 394 mm, with 406 mm x 406 mm hood 559 mm and 610 mm x 610 mm hood 876 mm

Weight 3 kg with hood attached

Base opening diameter 338 mm diameter

Resolution 0.1 l/s from 4.7 to 9.9 l/s, 1 l/s from 10 to 236 l/s

Support documents

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Alnor LoFlo user manual.pdf Alnor LoFlo user manual
Technical document
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