Chemical Seals Gb

7/25/2019 Chemical Seals Gb

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Chemical seals


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What is a chemicalWhat is a chemical

sealseal

A flexible diaphragm welded or

pinched beetween two housing

which allow to insulate measurement

system of process fluid

Diaphragm

Gauge

Upper

housing

Process fluid

Filling liquid

lower

housing


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When to use aWhen to use a

chemical sealchemical seal

Vicous or turbid

solid at room temperature

Corrosie

!oxic Food products


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Seals for viscous orSeals for viscous or

turbide substanceturbide substance

Flanged seal with suffisant inputdiameter

Viscous substance


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Seals for substanceSeals for substance

solid at roomsolid at roomtemperaturetemperature

Flanged seal or flush diaphragm seal

"eat insulator


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Seals for toxicSeals for toxic

substancessubstances

#n case of rupture of bourdon tube

the diaphragm will be flatenedagainst arch inside the seal assembly

Dangerous substance

Capillary tube


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Food applicationsFood applications

$pecial connection s for food

industry

Clamp D#%

$&$

'(


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Volume of fluidVolume of fluid

A olum of fluid is necessary to

moe the sensing element


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The transmitting fluidThe transmitting fluid $tandard fluid) '*$+

!emp) ,+-.C to +-/.C) !he only one accepted by food industry

'ow temperature fluid)'*$0

!emp) ,1/.C to +-/.C "igh temperature fluid)'*$2

!emp) ,0/.C to 2//.C

Fluid for oxigen serice)'*$3

!emp) ,+-.C to +-/.C

max Pressure)+-/ 4ar


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Differences in heightDifferences in height

Pressure gauge located beneath the

separator) the correction will be

positie

Pressure gauge locatedaboe theseparator) the correction will be

negatie


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Chemical sealChemical seal

D40-D4 seriesD40-D4 series

D3/ )For gauge pressure between

/51and +1bar on corrosie fluids

D3+ )For gauge pressure between

+1and 0-/bar on corrosie fluids5


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D00 seriesD00 series

For relatie pressure between 3 and

+1/bar on corrosie fluids5

!emperature between ,1/.C and

60//.C


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D!0"D! seriesD!0"D! series

For relatie pressure between +1/

and +///bar on corrosie fluids5


60//.C


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D!00 seriesD!00 series

For relatie pressure beetweeen /53and

3//bar on corrosie fluids5

!emperature beetween ,1/.C and

60//.C


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D#00 seriesD#00 series

For relatie pressure beetweeen /5+1

and 0-bar7compound pressure

between ,+and /7absolute pressure

from/ to03 bar7 on corrosie fluids5 !emperature beetween ,1/.C and

60//.C


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D$ serieD$ serie

For gauge pressure beetween 3

and+1/bar on corrosie fluidss5

!emp8rature beetween ,1/.C and

60//.C


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D$! seriesD$! series

For gauge pressure between /53and

3/bar on corrosie fluids5


60//.C


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D $# seriesD $# series

For relatie pressure between /5+1

and 0-bar7compound pressure

between ,+and /7absolute pressure

from/ to03 bar7 on corrosie fluids5 !emperature between ,1/.C and

60//.C


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D%00 seriesD%00 series

For gauge and absolute pressure between

+1/m4ar and 3//bar on corrosie fluids5

!emperature between ,1/.C and 60//.C


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D%&0 seriesD%&0 series

For gauge and absolute pressure between

+1/m4ar and -/bar on corrosie fluids5

!emperature between ,1/.C and 60//.C


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Food applicationsFood applications

D'(C serieD'(C serie

9Clamp ersion


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D'(T principleD'(T principle

Pressure

Diaphragm

Filling

liquid

!hreads


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Different problemsDifferent problems

)ith usual mounting)ith usual mounting

Cristallisation

or solidification

:bstruction by particles

in loaded liquids

Contamination in

case of changing of process


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Chemical sealsChemical seals

D'(T serieD'(T serie

Flow through seal for food industry

application

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Chemical Seals Gb