Glass tube variable area flowmeter FGM1190

Glass tube variable area flowmeter FGM1190

The wide variety of float weights and meter tubes allows the glass tube flowmeter FGM1190 to be matched exactly to the required flow range. The three ribs, parallel to the center axis of the meter tube, guide the float over the entire flow range. This enables a high degree of reproducibility because the float is absolutely centered in the meter tube.

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Designed for flowrate measurements in many industries including system manufacture, food, water treatment plants and chemical. Aggressive fluid applications are possible because the fluid wetted parts can be made from a wide variety of different materials.

Design type FGM1190-87

With threaded pipe connection in accordance with DIN 2950.

Design type FGM1190-97

With vertical internal thread connection or threaded connector in accordance with

DIN 11851, DIN 405 part1 for the food and beverage industry.

Design type FGM1190-98

With flange connection in accordance with DIN and ASME.

Easy range change and cleaning-no removal from the line required.

Excellent visibility of flow rate over a linear scale.

Application

Clean, low viscosity liquids and gases

Mounting

Vertically, in line

Connections

1/4 in. to 2 in., threaded, DN 10 to DN 50 flanged, SC15 to SC50 hygienic (DIN11851), vertical

Flow ranges

Water flows: 0.002 to 17600 l/h

Flow turndown

Typically 10:1

Operating pressure

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

Operating temperature

Up to 180 °C (356 °F)

Nominal scale length

100, 130 or 250 mm (4, 5 and 10 in.)

Accuracy

Class 1.6 to Class 6, depending on tube diameter and float type

Alarms

Inert gas switches, up to 2 off

Tube material

Borsilicat glass

Float material

Stainless steel, Glass, Sapphire, Carboly, PVC, Tantalum, HastelloyTM, Aluminium, PTFE

Fitting material

Stainless steel, PVC, PVDF

Features

  • Variable-area (float-in-conical-tube) principle: the float rises in the tapered glass meter tube in proportion to the flow.
  • Suitable for clean, low-viscosity liquids and gases.
  • Mounting: vertical, in-line (flow from bottom to top) for best accuracy. 1
  • Connection options: threaded (¼″ to 2″) or flanged (DN10 to DN50), also hygienic (DIN11851) for food/ beverage.
  • Flow range examples: water flows from ~0.002 up to ~17,600 L/h depending on size.
  • Typical turndown (rangeability): ~10 : 1.
  • Materials: glass tube (borosilicate) with housing in standard stainless steel; wide choice of float materials (stainless steel, sapphire, Hastelloy, etc) to suit aggressive or special media.
  • Quick range-change and cleaning: meter tube and float can be replaced independently without full removal from line.
  • Optional alarm signalling unit (magnetically actuated) for upper/lower limit detection.