variable-area flow meter / for air / for water / direct-reading
M Aalborg Instruments



  • Technology:


  • Fluid:

    for air, for water

  • Other characteristics:

    direct-reading, glass tube, in-line, stainless steel, ultra-rugged

  • Process pressure:

    Max.: 200 psi

    Min.: 0 psi (0 psi)

  • Process temperature:

    Max.: 93 °C (199 °F)

    Min.: 0 °C (32 °F)

  • Volumetric flow rate:

    Max.: 116 us gal/min (439.1 l/min)

    Min.: 0 us gal/min (0 l/min)


The Model M, manufactured by AALBORG, is series of single flow tube rotameters that are made for industrial flow measurement. They are totally enclosed within the brushed stainless steel packaging.

The rotameters are suitable for the applications in which the flow rates are up to 116GPM and 250SCFM. They are utilized along with the industrial water and air service. They come off with FNPT end fittings for easy in-line installation. The wet components involve borosilicate glass flow tubes,Viton o-rings, and 316 Stainless steel fittings, guide rods, floats and float stops.

Their layout provides thick polycarbonate safety shields and direct reading metric and English system scales.