Glass tube variable area flowmeter Purgemaster FGM6100

Glass tube variable area flowmeter Purgemaster FGM6100

Purgemaster FGM6100 flowmeters are low capacity variable area flowmeters for both liquid and gas with an excellent selection of material and scale lengths in a single product family design. They feature a corrosion resistant, high strength stainless steel body, quick, easy snap-in tube construction and a safety tested operator protection shield.

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Purgemasters are ideal for applications such as the purging of control lines and instrument enclosures. Their use is easily extended into fluid sampling, liquid specific gravity, level measurement and similar services.

Application

Clean, low viscosity liquids and gases

Mounting

Vertically, in line, wall / surface or back of panel

Connections

1/4 in. NPT or BSPP female, vertical or horizontal

Flow range

Water flows: 0.53 to 2200 cm3/min

Flow turndown

Typically

10:1

Operating pressure

Up to 18 bar (261 lbf/in 2 g)

Operating temperature

Up to 120 °C (248 °F)

Nominal scale length

38, 76, 125 or 250 mm (11/2, 3, 5 and 10 in.)

Accuracy

Class 1.6 to Class 10, depending on tube diameter and float type

Alarms

Proximity sensors, up to 2 off

Tube material

Glass

End connections

Brass or 316 stainless steel

Float material

Glass, Sapphire, Carboly, Tantalum, Stainless steel)

Features

  • Designed for low-capacity flows of clean, low-viscosity liquids and gases.
  • Construction: corrosion-resistant, high-strength stainless steel body, “snap-in” glass tube design, and safety-tested operator protection shield.
  • Mounting options: vertical inline, wall/surface mount, or back-panel.
  • Connections: female ¼″ NPT or BSPP (female) in horizontal or vertical orientation.
  • Flow range example: For water flows approx. 0.53 to 2,200 cm³/min.
  • Typical turndown (rangeability): ~10:1.
  • Maximum operating pressure: up to 18 bar (≈261 psi) g.
  • Maximum operating temperature: up to ~120 °C (248 °F) for standard versions.
  • Scale length options: 38 mm, 76 mm, 125 mm or 250 mm (1½″, 3″, 5″ and 10″) nominal.
  • Accuracy classes: dependent on tube diameter & float type; classes range from ~1.6 to 10 according to configuration.
  • Tube material: glass (borosilicate) in many cases; float materials vary (glass, sapphire, Carboloy, tantalum, stainless steel) to suit different fluids