ferrite (diverse) meter mf300f - ferrite, austenitic, duplex steel

8/10/2019 Ferrite (DIVERSE) Meter MF300F - Ferrite, Austenitic, Duplex Steel

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DIVERSEwww.diverse-technologies.netwww.diverse-technologies.netwww.diverse-technologies.netwww.diverse-technologies.net

Ferrite Meter MF300F+Ferrite Meter MF300F+Ferrite Meter MF300F+Ferrite Meter MF300F+

OverviewOverviewOverviewOverview

Industrial processing and chemical plants work at

high temperatures and pressures, often withaggressive media and stainless steel is often the

material of choice for these applications. If the

ferrite content of the steel steel is too low, then

welding of stainless material ma crack at elevated

temperature or with high stress or vi!ration.

"lternativel, if the ferrite content is too high, the

weld ma !e weaker and corrode.

#o address the need to measure the amount of

ferrite in a sample the $elding %esearch &ouncil

introduced the Ferrite 'um!er (F') as astandardised value which related to the ferrite

content of an e*uivalentl magnetic weld metal.

#he volume percentage of ferrite can !e estimated

as a!out 0 of the F' !ut the relationship

depends upon the tpe and origin of the stainless

steel used and the measurement techni*ue.

#he iverse Ferrite meter MF300F+ measures the

Ferrite num!er (F') of austenitic and duple

stainless steel weld material. It has a pro!e that is

sensitive to ferrite content in a /0 mm area to a

depth of approimatel / mm. #he instrument is

cali!rated using the secondar world standards

validated ! 'ational Institute of tandards and

#echnolog ('I#) in the 1". "ll /2 standards are

used in the cali!ration giving an instrument with a

measurement range from 0 to // F'. #ransfer

standards are supplied with the instrument

allowing performance to !e verified at an time.

" variet of measurement modes are supported to

ensure that good repeata!le measurements can !emade.

Measure Ferrite &ontent of "ustenitic 4Measure Ferrite &ontent of "ustenitic 4Measure Ferrite &ontent of "ustenitic 4Measure Ferrite &ontent of "ustenitic 4

uple teeluple teeluple teeluple teel

FeaturesFeaturesFeaturesFeatures

'on-destructive test of the ferrite content in a'on-destructive test of the ferrite content in a'on-destructive test of the ferrite content in a'on-destructive test of the ferrite content in a

range of 0./ to // F' e*uivalent to 0./ to 50.range of 0./ to // F' e*uivalent to 0./ to 50.range of 0./ to // F' e*uivalent to 0./ to 50.range of 0./ to // F' e*uivalent to 0./ to 50.

Fe in austenitic and duple steel.Fe in austenitic and duple steel.Fe in austenitic and duple steel.Fe in austenitic and duple steel.

%o!ust and porta!le%o!ust and porta!le%o!ust and porta!le%o!ust and porta!le

tandard or peak measurement of Ferritetandard or peak measurement of Ferritetandard or peak measurement of Ferritetandard or peak measurement of Ferrite

'um!er'um!er'um!er'um!er

6stimate of ferrite percentage (0 of F')6stimate of ferrite percentage (0 of F')6stimate of ferrite percentage (0 of F')6stimate of ferrite percentage (0 of F')

"utomatic 7ero on demand"utomatic 7ero on demand"utomatic 7ero on demand"utomatic 7ero on demand

upplied with transfer standards allowingupplied with transfer standards allowingupplied with transfer standards allowingupplied with transfer standards allowingveracit of instrument to !e checkedveracit of instrument to !e checkedveracit of instrument to !e checkedveracit of instrument to !e checked

torage of 8 measurements, downloaded totorage of 8 measurements, downloaded totorage of 8 measurements, downloaded totorage of 8 measurements, downloaded to

9& with %838:1; (option)9& with %838:1; (option)9& with %838:1; (option)9& with %838:1; (option)

1se with high temperature samples (air-cooled1se with high temperature samples (air-cooled1se with high temperature samples (air-cooled1se with high temperature samples (air-cooled

pro!e option)pro!e option)pro!e option)pro!e option)

imple measurement with small sample area.imple measurement with small sample area.imple measurement with small sample area.imple measurement with small sample area.

1nits selecta!le !etween $%&-F' and Fe.1nits selecta!le !etween $%&-F' and Fe.1nits selecta!le !etween $%&-F' and Fe.1nits selecta!le !etween $%&-F' and Fe.

&ali!ration with standards tracea!le to $orld&ali!ration with standards tracea!le to $orld&ali!ration with standards tracea!le to $orld&ali!ration with standards tracea!le to $orld

econdar tandardsecondar tandardsecondar tandardsecondar tandards

upplied in carr caseupplied in carr caseupplied in carr caseupplied in carr case

MF300F+

measuring

the transfer

standards


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1nits Ferrite 'um!er F'

Ferrite percentage F

%ange 0 - // F'

0 - 50. (percent ferrite)

%esolution 0./ F'

0./ F

tandard< "ccurac (/0=& - 30=&)

F' 0 - /0

F' /0 - 30

F' 30 - /00

> 0. F'

> of the reading

> /0 of the reading

"ir cooled< "ccurac (30=& - 300=&)

F' 0 - /0

F' /0 - 30

F' 30 - /00

> / F'

> /0 of the reading

> 80 of the reading

&ali!ration Factor cali!ration to 'I# standards

1ser cali!ration to supplied transfer standards

#ransfer standards Five transfer standards

%ange tpicall 3 F' to // F'

?ero "utomatic on demand

Mode "verage or peak

torage 8 records

9& ownload Optional %838 and 1;

9ro!e 9encil stle, /mm diameter length /80mm

ensing area /0mm diameter

Operating temperature tandard 0=& - @0=&

"ir cooled 0=& - 300=&

"ir cooled operation "ir line suppl regulated to / !ar maimum

Oil filtered suppl desira!le

"ir temperature< am!ient (/0=& - 30=&)

Aumidit 'on-condensing

$eight in case /.8 kg

&ase dimensions 8/0 /00 @ mm

upport &all:email iverse for support for use of the instrument or

assistance with unusual application.

MF300F+< 9erformance pecificationMF300F+< 9erformance pecificationMF300F+< 9erformance pecificationMF300F+< 9erformance pecification


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OperationOperationOperationOperation

#he MF300F+ uses a static magnetic field techni*ue todetermine the degree of ferricit. " rare earth magnet is

introduced into a comple mu metal magnetic circuit

such that the introduction of ferritic material at the tip

of the pro!e modifies the field distri!ution in the pro!e.

#he change in the magnetic field is detected using a

state of the art Aall effect magnetic sensor. #he signal

from this sensor is processed ! the instrument to

produce a reading. #he cali!ration of the different

readings is matched to the known ferrite num!ers of

the econdar $orld tandards.

" ke advantage of the techni*ue over other ac

ecitation methods is that there is no error due to ac

skin effect or etraneous ac induction.

Ferrite 'um!erFerrite 'um!erFerrite 'um!erFerrite 'um!er

Ferrite num!er is a measure of &hromium and 'ickel e*uivalent in an

"ustenitic stainless steel material and is a measure for denoting the ferrite

content in stainless steel. It should !e !etween 3- maimum !ecause ver

low ferrite can lead to cracks. Ferrite 'um!er has !een adopted as a relative

measure for *uantifing ferritic content

using magnetic techni*ues. #he Ferrite

'um!er approach was developed in

order to reduce the large variation in

ferrite levels determined on a given specimen when measured

using different techni*ues in different la!oratories.

#he ferrite level is important to assure minimum eposure to

solidification cracking when depositing austenitic stainlesssteel weld metal. " lower ferrite

num!er is !etter for corrosion

resistance, while !alancing

higher ferrite content to avoid

solidification cracking in the weld

deposit. Bow ferrite num!ers are less important for applications such as

cladding where no cracking is o!served. #esting for ferrite num!er can !e

achieved using the MF300F+ and crack testing can !e done using li*uid

penetration verification.


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"!out the MF300F+"!out the MF300F+"!out the MF300F+"!out the MF300F+

MF300F+ is the latest instrument in the popular

range of magnetic meters from iverse. #he ro!ust

slimline pro!e !enefits from a novel magnetic

design with ecellent coupling to the measurement

sample. #his results in sensitivit to a small well

defined volume and ecellent response over the full

range of ferrite samples.

"n air-cooled version of the pro!e (this must !e

specified at time of order) allows Ferrite

measurement of hot samples.

#he latest software supports cali!ration over the

whole range of secondar ferrite samples prepared

! 'I#. #ransfer samples are supplied with a

range of F' allowing user verification of the

cali!ration.

" new peak mode has !een included. torage of

up to 8 measurements is included on the standard

instrument. &ommunication with a 9&, via %838

or 1;, is provided as an option, including

downloading of the measurement log.

#he instrument supports user cali!ration to the

transfer standards supplied.

&ali!ration:$orld tandards&ali!ration:$orld tandards&ali!ration:$orld tandards&ali!ration:$orld tandards

#he iverse MF300F+ is cali!rated using

standards that are tracea!le to internationall

accepted secondar standards. #he International

Institute of $elding in the 1C (II$) developed

secondar standards that have !een tested ! 'I#and #he $elding Institute,(#$I) according to

methods descri!ed in I' 6' IO 58@D and

"'I:"$ "@.8.

#he master cali!ration of the instrument is made

against these standards. #he transfer cali!ration

standards supplied with the MF300F+ are

simulations of the magnetic effect of ferrite

num!er and are each cali!rated for this effect

against the II$ standards.

9ro!es9ro!es9ro!es9ro!es

#he iverse

MF300F+ is supplied

with a pencil-like

pro!e made of

aluminium with an

internal precision

magnetic circuit and

sensor.

#he pro!e is constructed with a

/0mm diameter ring that is setproud at the tip. For

measurement, this ring is

!rought into contact with a

reasona!l flat portion of the

o!Eect under test and a reading

can !e taken.

$ith an air flow

adaptor and other

internal andcali!ration changes,

the air cooled pro!e

version allows for

measuring of hot

samples. "ir flow is

directed in the

standard hose

connector, over the

sensor and

magnetic

components and isrouted out of vent holes in the pro!e !arrel.

Items suppliedItems suppliedItems suppliedItems suppliediverse MF300F+ Ferrite Meter and pro!e

#ransfer standards

&arr case

OptionsOptionsOptionsOptions"ir cooled pro!e

erial:1; ca!le and software

11/2013

ferrite (diverse) meter mf300f - ferrite, austenitic, duplex steel

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