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Variable Area Flowmeters

First patented at the beginning of the 19th century, Variable Area (VA) Flowmeters (sometimes called Rotameters) still form an important and substantial part of the modern day instrumentation market. With their simple but robust measuring principle and with glass giving way to modern chemically resistant engineering thermoplastics, the VA flowmeter is ideal for low cost measurement of low viscosity liquids and gases, especially those which are chemically agressive.

  • M Series Conical Tube Variable Area Flowmeter - Flow Ranges from 1.5 to 60,000 L/Hr(water) 0.1 to 758 NM3/Hr (air), 3/8” to 2.1/2” in Size. PVC, Trogamide, Polysulfone or PVDF body.
  • B, G, H, J & P Series Variable Area Flowmeters - Flow ranges up to 570 l/min for Air, Water, Oils & Chemicals. 1/4" to 2". Aluminium, Brass & Stainless Steel. Pressures up to 414 bar and temperatures up to 315°C.
  • HYDRAPRO Flow, Pressure & Temperature test kits with load valve - 110l/min or 190l/min flow ranges with pressure gauge to 400 bar and temperature gauge to 120°C supplied in kit form with easy to use loading valve
  • M & N Series Variable Area flowmeter alarms - Flow ranges up to 570 l/min for Air, Water, Oils & Chemicals. 1/4" to 2". Aluminium, Brass & Stainless Steel. Pressures up to 414 bar with 1 or 2 settable alarm switch outputs.
  • R Series Variable Area flow transmitters - Flow ranges up to 570 l/min for Air, Water, Oils & Chemicals. 1/4" to 2". Aluminium, Brass & Stainless Steel. Pressures up to 414 bar with analogue (mA or V) or frequency signal output of flow rate.

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