VAF Sales Ppt Resumed

8/17/2019 VAF Sales Ppt Resumed

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Swagelok ®

VariableAreaFlowmeters

© 2008 Swagelok Company


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Basic Components of aVAF

VA Flowmeters

Outlet

Inlet

Tapered Tube

FloatScale

MaximumMeasurement

MinimumMeasurement

Turndown Ratio = Max Measurement

Min Measurement

Turndown Ratio for VAFs = 10:1



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Advantages1. Visual indication of flow

2. Do not require any external power

3. Very low set-up cost

4. Less expensive than most flowmeasurement technologies

5. Simple and robust

6. Minimal pressure drop

VA Flowmeters



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G l as s t u b e m o d e l s

Six models that vary in:– Size

– Accuracy– Cost– Materials of construction

GM G1 G2 G3 G4

GP model is aplastic G2 model


Swagelok G-Series


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Glass Tube – G1 Model– This G1 model is suitable for

low flow rates in fine-meteringapplications such as gaschromatography.

Features:

Compact in size

Accuracy class = 4.0

Limit switches (one or two)



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Glass Tube – G2 Model– Commonly used in analytical

instrumentation applications,the G2 model is appropriate forlow to medium flow rates.

Features:

Has the most flow ranges available;versatile





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Glass Tube – G3 Model– The G3 model provides

reliable, accuratemeasurement over the midranges of air or water flow.

Features:

Larger tube for easy reading





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Glass Tube – G4 Model– Suitable for laboratory

applications, the large-size G4model is highly accurate overits full measured flow range.

Features:

Most accurate flowmeter available





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Glass Tube – GM Model– This miniature glass-tube

model has a plastic head andfoot piece and can be panelmounted easily.

Features:

Very small and cost effective


No limit switches available on thismodel



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Glass Tube – GP Model– The GP model offers a plastic

head and foot piece, includingend connections.

Features:

Many flow ranges available; costeffective option because of theplastic head and foot piece





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M et a l tu b e o r a r m o r e d

Four models that vary in:– Size

– Accuracy– Cost– End connections– Orientation

Models: M1 M2 M3

MH model is ahorizontal M3 model


Swagelok M-Series


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Metal Tube – M1 Model– The miniature M1 model is compact,

yet offers protection against harshenvironments and higher pressureswith an armored measuring tube.

Features:

Compact size and lower price, while stilloffering the safety of the metal tube


Limit switches (min or max or both)



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Metal Tube – M2 Model– The M2 model offers versatility,

with an integral junction box andchoice of mechanical or electronicdisplay.

Features:

Largest metal tube flowmeter withmetering valve. Also has optionalelectronic LED display.



Electronic version also provides 4 to 20mA output signal



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Metal Tube – M3 Model– This metal-tube flowmeter,

with rugged design, is suitedfor extreme operatingconditions and high flow rates.

Features:

Large metal tube flowmeter withchoice of end connections, NPTor flange ends. Also availablewith ½ inch and 1 inch tubediameters.


Limit switches (min or max or both)4 to 20 mA output signal

Has the most options available;configurable



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Metal Tube – MH Model– This horizontal model offers

liquid flow reading left-to-rightor right-to-left to meet systemrequirements.

Features:

Only model available that can bemounted horizontally. Also

available with ½ inch and 1 inchtube diameters.



4 to 20 mA output signalHas the most options available; very

configurable



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Electronic Options• Limit Switches

– There are electronic options that areavailable on most models to indicateif a flow is outside of a range that acustomer needs

– A sensor will pick up where the floatis (above or below) and send outeither a 1 mA signal for below or a 3mA output for above

– One (min or max) or two (min andmax) switches are available perflowmeter

• 4 to 20 MA Output Signal– Is available on the M2, M3, and MH

models– Produces an analog signal that is

proportional to the flow on the scale,where 4 mA is the low reading and20 mA is the high reading

Limit Switches

Junction Box



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Additional Options• Junction Box – Recommended whenever switches are ordered• Threaded conduit gland• M20 X 1.5 cable gland• Valve Position – Can be switched to top position (liquids)• Certificate of compliance•

5-Point pressure record• Pressure test and certificate• Material certification• Dye penetration test and certificate• X-ray test and report• Hardness test and report• Oil- and grease-free cleaning and test report

Junction Box

Valve would move totop position

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VAF Sales Ppt Resumed

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