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Flow Measuring Instrument

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Glass Tube Rotameter
Description :

FLOWTECH Glass Tube Variable Area Flow Meters (Rotameters) are intended for general in line and By-Pass metering applications (i.e. for Gas & Liquid) where operating conditions are with the limitations of Glass metering tubes. These are the principle of Variable Area. The float moves freely up and down tapered borosilicate glass with fluid flow from bottom to top. The float takes up a position where buoyancy forces and the float weight are balanced in proportion to flow rate. The Vertical position of the float as indicated by scale is the measure of the instantaneous flow rate.

  • Simplified piping and reduced space requirements.
  • Permanent magnetic link between metering float and motion position transmitter.
  • Precision swaged metering tube.
  • Heavy duty welded float and guide construction.
  • Guide cartridges easily removable for cleaning
  • Provide with Electrical transmitter, flow indicator OR alarm.

Accuracy : /- 2% F.S.D.

Repeatability : 0.5 %

Rangebility : 10:1

Scale length : 180 degree Angular

Pressure Ratings : 40 Bar

Temperature Ratings : - 20º C to 250º C

Connections : Flanged OR Screwed

Enclosure : IP 55 OR IP 65 on request

Tube : 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium

Float : 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium

Indicator Box : ABS, Cast Al., SS

End Fitting : 316SS, 316LSS, 304SS, Hastelloy ‘C”, Titanium

Mainly used for measuring rated flow of liquid and gases.

  • Available in C.S, SS-304, SS-316 Poly Propelene.P.T.F.E. Lined.
  • Flanged, Screwed or Hose connections.
  • Available from 15 NB to 100 NB pipe size and ranges between 30 to 20,000 LPH of water at ambient temperature.
  • Linear scale having accuracy of 2% FSD.
  • High & Low flow switches.


Flow Measuring Instrument

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Acrylic Body Rotameter For Cement Industries

Flowtech Make Acrylic Body Rotameters.

Description

Detailed Product Description DESCRIPTION: FLOWTECH Acrylic Body Tube Variable Area Flow Meters (Rotameters) are inten DESCRIPTION: FLOWTECH Acrylic Body Tube Variable Area Flow Meters (Rotameters) are intended for general in line metering applications (i.e. for Gas & Liquid) where operating conditions are with the limitations of Acrylic Body metering tubes. These are the principle of Variable Area. The float moves freely up and down tapered Acrylic body Tube with fluid flow from bottom to top. The float takes up a position where buoyancy forces and the float weight are balanced in proportion to flow rate. The Vertical position of the float as indicated by scale is the measure of the instantaneous flow rate.

PERFORMANCE:

Accuracy : +/- 2% F.S.D.

Temperature Ratings : Maximum Operating Temperature rating is 50 o C Repeatability : 0.5 % Connections : Flanged OR Screwed OR Triclover Joint OR Hose Nipple

Rangebility : 10:1

Meter Size

Max. Operating Pressure (Kg/Cm2g)

15

25

20

25

25

15

40

12

50

10

80

7

Precociously machined from imported transparent solid acrylic block tapering tube is done by special tools.

  • Suitable for water, saline water, air N2 H2 and natural gases.
  • Available from 1/4" NB to 100 NB pipe size and ranges between 10 to 50,000 LPH of water at ambient temperature.
  • Accuracy=2%FSD.
  • High & Low Flow switches on request.

Flow Measuring Instrument

Flow Measuring Instrument

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The simplest & most common flow meter is a fixed Orifice in a pipeline. This Orifice creates a pressure differential (i.e. pressure drop) which is proportional to flow. But the flow rate versus differential pressure is a square root function, thus at the high end of the scale the graduations are far apart and very easy to read. At the low end of the scale, the graduations are so close together that reading becomes impossible. The net result is a meter with only a 3 OR 4 to 1 usable range.

The limited range-ability of this type of meter can be overcome by adding a bypass leg around the Orifice, which has a pressure drop equal to the drop across the Orifice and bypassed flow is directly proportional to the mainline flow. This results in a meter, which has a linear function and not a square root. Since the flow meter has a 10 to 1 range, the Orifice meter will now have a 10 to 1 linear flow range, which is as easy to read at the bottom as the top of the scale. This principle can be used virtually any pipeline size, handling almost any flow rate and metering either liquid OR gas. It is one of the most versatile meters available. Its only limitation is that the solid particles OR slurries can clog the Orifice and prevent proper operation.

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