Glass tube variable area flowmeter RatoSight FGM2235

Glass tube variable area flowmeter RatoSight FGM2235

The Series FGM2235 (10A2235) Ratosight Flow Rate Indicator is a rugged, low cost, glass tube variable area flowmeter that provides stable and reliable operation while measuring liquid or gas flow rates. The meter can be supplied with the Ratolarm extension for alarm actuation.

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The Ratosight variable area flowmeter is the best available low flow solution for alakali fluids such as sea water. It is well suited for marine applications, RO systems, and forced pump lubrication and cooling as well as seal water systems.

Application

Clean, low viscosity liquids and gases

Mounting

Vertical and Horizontal, In line

Connections

1/4 in. through 2” NPT Connections

Flow range

Water flows: 1.2 to 3000 GPH

Ari Flows: 3-6600 SCFH

Flow turndown

Typically 10:1

Operating pressure

Up to 175 psig

Operating temperature

Up to 250F (120C)

Accuracy

5% Full Scale (1” to 2” sizes), 10% (1/2” size)

Alarms

Min, Max, Min&Max

Tube material

Borisilicate 3.3 Glass

End connections

Brass/Bronze

Float material

Aluminum, Brass & Monel (Optional)

Features

  • Designed for clean, low-viscosity liquids and gases.
  • Can be mounted vertically or horizontally, in-line piping.
  • Connections: from ¼″ to 2″ NPT.
  • Flow range (example): Water flows: ~1.2 to 3,000 GPH.
  • Air flows: ~3 to 6,600 SCFH.
  • Typical turndown ratio: ~10 : 1.
  • Maximum operating pressure: up to ~175 psig.
  • Temperature rating up to ~250 °F (≈120 °C) for standard version.
  • Accuracy: For 1″ to 2″ sizes: ±5% of full scale.
  • For ½″ size: ±10% of full scale.
  • Tube material: Borosilicate glass 3.3.
  • Body material: Bronze (alloy 85-5-5-5).
  • Float material: Standard brass for liquids, aluminium for gases; optional Monel for liquids.
  • Optional alarm extension (“Ratolarm”) available for low/high flow cut-off.