Grease Steel Dust Meter
SDM-72
Instruction Manual• Keep this manual for easy reference.
• Carefully read this manual prior to use.

TableTableofofContents
Contents
1.1. Introduction
Introduction.........................................................................................
.........................................................................................
11
2.2. Features
Featuresofofthis
thisProductProduct.....................................................................
.....................................................................
11
3.3. Safety
SafetyPrecautions
Precautions..............................................................................
..............................................................................
11
Symbols
SymbolsUsed
Usedininthis
thisManual
Manual.............................................................
.............................................................
11
SafetySafetyPrecautions
Precautions.............................................................................
.............................................................................
22
4.4. Package
PackageContents
Contents..............................................................................
..............................................................................
33
5.5. Consumables
Consumables......................................................................................
......................................................................................
33
6.6. Component
ComponentNames
NamesandandFunctions
Functions.....................................................
.....................................................
44
7.7. Operation
Operation............................................................................................
............................................................................................
55
7-1.
7-1.Battery
BatteryInstallation
Installation......................................................................
......................................................................
55
7-2.
7-2.Battery
BatteryCheck
Check.............................................................................
.............................................................................
55
7-3.
7-3.Taking
TakingMeasurements
Measurements.................................................................
.................................................................
66
7-4.
7-4.Grease
GreaseSampling
Sampling........................................................................
........................................................................
77
7-5.
7-5.Sample
SampleTube
TubeFilling
Filling....................................................................
....................................................................
77
8.8. Error
ErrorCodes
Codes........................................................................................
........................................................................................
88
9.9. Troubleshooting
Troubleshooting..................................................................................
..................................................................................
99
10.
10.Warranty
Warranty...........................................................................................
...........................................................................................
1010
11.
11.Maintenance
Maintenance.....................................................................................
.....................................................................................
1010
12.
12.Specifications
Specifications....................................................................................
....................................................................................1111
Appendix:
Appendix:Measuring
MeasuringPrinciple
Principle...................................................................
...................................................................i i
A1.
A1.Magnetic
MagneticBalance-Type
Balance-TypeElectromagnetic
ElectromagneticInduction
InductionMethod
Method................
................i i
A2.
A2.Measurable
MeasurableMetals
Metals..............................................................................
..............................................................................ii ii
A3.
A3.Usage
Usage..................................................................................................
..................................................................................................
iiiiii(1)(1) Major
MajorApplications
Applications...............................................................................
...............................................................................
iiiiii(2)(2) Correlation
Correlationbetween
betweenSteel
SteelDust
DustConcentration
Concentrationand
andBearing
BearingWear
Wear
StatusStatus.................................................................................................
.................................................................................................iviv(3)(3) Criteria
Criteria(Reference)(Reference)...........................................................................
...........................................................................iviv(4)(4) Measurement
MeasurementCycle
Cycle............................................................................
............................................................................v v(5)(5) Trend
TrendManagement
Managementand
andSimplified
SimplifiedDiagnosis
DiagnosisofofBearing
BearingWear
Wear........
........vivi(6)(6) Iron
IronParticle
ParticleDiameter
DiameterandandDetection
DetectionRange
RangeComparison
Comparisonamong
among
Measuring
MeasuringMethods
Methods...........................................................................
...........................................................................
viivii(7)(7) Comparison
Comparisonbetween
betweenSDM-Measured
SDM-MeasuredValues
ValuesandandICP-Analyzed
ICP-Analyzed
ValuesValues...............................................................................................
...............................................................................................
viii
viii

1.1.Introduction
Introduction
Thank
Thankyouyouforforpurchasingpurchasingthe
theSDM-72
SDM-72grease
greasesteel
steeldust
dustmeter.
meter.
Prior
Priortotouse,use,pleasepleasecarefully
carefullyread
readthisthismanual
manualtotoensure
ensurecorrect
correctuse.
use.This
Thisproductproductisis
suitablesuitableforforpreventive
preventivemaintenancemaintenanceofofbearings
bearingsand
andgears
gearsofofrotatingrotatingmachinery
machinerysuch
suchasas
motors,motors,pumps,
pumps,industrial
industrialrobots,robots,vessel
vesselengines,
engines,windwindturbines,
turbines,andandelevators.
elevators.

2.2.Features
Featuresof
ofthisthisProductProduct
The
Thegreasegreasesteel
steeldust
dustmetermeterisisa aportableportableanalyzer
analyzerdesigned
designedtotomeasure
measurethe
thesteelsteeldust
dust
concentration
concentrationininlubricating
lubricatinggrease
greaseon-site.
on-site.It Itisisuseful
usefulwhen
whenchecking
checkingthe
thewearwearcondition
condition
ofofbearings
bearingsand
andgears.
gears.
It Itisisalso
alsoveryveryeasyeasytotouse.
use.Simply
Simplysample
samplea asmall
smallamountamountofofgrease
greasewaste
wastedischarged
discharged
fromfromthethemachinery
machineryatatthe
thetimetimeofofgrease
greaselubrication,
lubrication,and
andsetsetit itininthe
themeter.
meter.
• • Highly
Highlysensitive
sensitive
The
Themetermeterisisable
abletotoidentify
identifythetheinitial
initialbearing
bearingwear
wearbecause
becauseit itemploys
employsa amagnetic
magneticbalance-typebalance-typeelectromagnetic
electromagneticinduction
inductionmethod
methodasasitsitsmeasuring
measuringprinciple.
principle.
• • High
Highprecision
precision
The
Themetermeterisisable
abletotofindfindananabnormality
abnormalityininthe
theultra-slow
ultra-slowspeed
speedrotation,
rotation,which
whichisisdifficultdifficulttotodetect
detectbybythe
thevibration
vibrationanalysis
analysistechnique.
technique.
• • User-friendly
User-friendly
Just
Justfillfilla asample
sampletube
tubewith
withthethegreasegreasespecimen
specimenand
andinsert
insertit itinto
intothethemeter.
meter.Within
Withina a
few
fewseconds
secondsthe
themetermetergives
givesyouyoua areadout
readoutofofthe
theferromagnetic
ferromagneticparticles
particlesininthe
thegreasegreaseasasa apercentage
percentageofofthe
thetotal
totalweight.
weight.
• • Compact
Compactand
andportableportable
There
Thereisisnonolonger
longeranyanyneedneedtotosend
sendyouryoursample
sampletotoa alaboratorylaboratoryforforanalysis,
analysis,making
makingon-siteon-sitemeasurement
measurementpossible.
possible.

3.3.Safety
SafetyPrecautions
Precautions
Symbols
SymbolsUsed
Usedininthis
thisManual
ManualThis
Thismanual
manualuses
usesWarning,
Warning,Caution
Cautionand
andNoteNotesymbols
symbolstotodraw
drawattention
attentiontotoprocedures,procedures,materials,
materials,methods,
methods,and
andprocesses,
processes,which
whichrequire
requireparticularparticularattention.
attention.
WARNINGWARNING

Indicates
Indicatesa apotentiallypotentiallyhazardous
hazardoussituation
situationthat
thatmay
mayresultresultinin
death
deathororserious
seriousinjury.
injury.

CAUTIONCAUTION

Indicates
Indicatesa ahazardous
hazardoussituation
situationthat
thatmay
mayresultresultininminor
minorinjury
injuryororproperty
propertydamage.
damage.

NOTE
NOTE

ProvidesProvidesinformation
informationononproductproducthandling.
handling.
- -1 1- -Safety
SafetyPrecautions
Precautions
ToToensure
ensuresafe
safeoperation,
operation,follow
followthe
theprecautions
precautionsbelow.
below.

CAUTIONCAUTION• •ThisThisproductproductisisnot
notexplosion-proof
explosion-proofandandshould
shouldnot
notbebeused
usedininexplosive
explosive
atmospheres.
atmospheres.
• •Avoid
Avoidanyanystrongstrongmechanicalmechanicalshock
shockororimpact
impacttotothe
theproductproductasasa aresult
resultofof
dropping
droppingororbumping
bumpingagainst
againsta asurface.
surface.Failure
Failuretotododososomay
mayimpair
impairthetheperformance
performanceofofthe
theproduct.
product.
• •Do
Donot
notleaveleavethetheproductproductinina ahigh-temperature/humidity
high-temperature/humidityenvironment
environmentforforanan
extendedextendedperiod
periodofoftime.
time.Doing
Doingsosomay
maycausecausedevice
devicefailure.
failure.
• •Do
Donot
notexpose
exposethe
theproductproducttotorapid
rapidtemperature/humidity
temperature/humiditychanges.
changes.Doing
Doingsoso
maymaycausecausedevice
devicefailure.
failure.
• •TheTheproductproductisisnot
notdrip-proof.
drip-proof.Keep
Keepthetheproductproductaway
awayfrom
fromwater.
water.Failure
Failuretoto
dodososomay
maycausecausedevice
devicefailure.
failure.
• •If Ifthis
thisproductproductisistotobebeleft
leftunused
unusedforforananextended
extendedperiod
periodofoftime,
time,remove
removethethebatteries
batteriesfrom
fromthetheunit.
unit.Failure
Failuretotododososomay
maycausecausedevice
devicefailure.
failure.
• •ThisThisproductproductisisa aprecision
precisioninstrument.
instrument.Do
Donot
notdisassemble,
disassemble,modify,
modify,ororalter
alter
the
thestructure
structureofofthe
theproductproductororitsitselectricalelectricalcircuits.
circuits.Doing
Doingsosomay
maycompromise
compromisethe
theperformance
performanceofofthe
theproduct.
product.
• •ThisThis productproduct employs
employs thethe electromagnetic
electromagnetic induction
induction method
method asas itsits
measuringmeasuringprinciple,
principle,and
andshould
shouldnot
notbebeused
usedininthe
thevicinity
vicinityofofdevices
devices
emitting
emittinga astrong
strongelectromagnetic
electromagneticwave.
wave.Electromagnetic
Electromagneticwaves
wavesmay
maycausecause
a adriftdriftininthe
thereading.
reading.
• •Keep
Keep thethe productproduct away
away fromfrom wirelesswireless devices
devices (e.g.,(e.g., walkie-talkies,
walkie-talkies,
cellphones)
cellphones)while
whileininuse.
use.
• •TheThesampling
samplingportportisisequipped
equippedwith
withananoptical
opticalsensor.
sensor.Keep
Keepthethesampling
sampling
port
portand
andoptical
opticalsensor
sensorclean,
clean,asascorrect
correctmeasurement
measurementisisnot
notpossible
possibleif ifthey
they
arearecontaminatedcontaminatedwith
withiron
ironparticles,
particles,etc.
etc.If Ifcontaminated,
contaminated,wipe
wipethem
themwith
witha acottoncottonswab
swabororcloth.
cloth.
• •If Ifthetheproductproductisisdirty,
dirty,wipe
wipeit itwith
witha asoft,
soft,dry
drycloth.
cloth.Do
Donot
notuseusealcohol,
alcohol,
detergent,
detergent,benzene,
benzene,thinner,thinner,orora awet
wetcloth.
cloth.

- -2 2- -4.4.Package
PackageContents
Contents
A Astandard
standardpackage
packageconsists
consistsofofthe
thefollowing
followingitems.
items.If Ifany
anyitems
itemsarearemissing
missingorordamaged,
damaged,pleasepleasecontact
contactNew
NewCosmos
Cosmosororitsitsauthorized
authorizedrepresentative
representativeforforreplacement.
replacement.

Item
Item
SDM-72
SDM-72grease
greasesteel
steeldust
dustmeter
meter

Model/Part
Model/PartNo.
No.

Quantity
Quantity

SDM-72
SDM-7211

SMC-01G
SMC-01G

1 1boxbox(10(10pcs)pcs)

SpatulaSpatula11

SampleSampletube,
tube,withwithcapcap
AAAAbattery
battery44

Carry
Carrycase,case,withwithshoulder
shoulderstrap
strap

11

Instruction
Instructionmanual
manual(this(thisdocument)
document)

11

Inspection
Inspectioncertificate
certificate

11

5.5.Consumables
Consumables(sold(soldseparately)
separately)
Item
Item

Model/Part
Model/PartNo.
No.

SampleSampletube,
tube,withwithcapcap(10(10pcs)pcs)- -3 3- -SMC-01G
SMC-01G

6.6.Component
ComponentNames
NamesandandFunctions
FunctionsFigureFigure1.1.Exterior
ExteriorAppearance
Appearance
Item
Item

①①

②②
③③

④④
⑤⑤

Component
Component

Function
Functionand
andDescription
Description⋅ ⋅SetSetthetheswitch
switchtotoMEAS
MEAStotoenter
entermeasurement
measurementmode;
mode;
set
settotoMEAS
MEASbefore
beforeinserting
insertingthe
thesample
sampletube
tubeinto
intothetheSelector
Selectorswitch
switchmeter
meter⋅ ⋅SetSetthetheswitch
switchtotoBATT
BATTtotocheck
checkthethebattery
batteryvoltage
voltage⋅ ⋅SetSetthetheswitch
switchtotoOFF
OFFtototurn
turnoffoffthetheunitunit
Sampling
Samplingport
port
InsertInserta asample
sampletube
tubehere
hereforformeasurement
measurement
Displays
Displaysthe
thesteelsteeldust
dustconcentration
concentrationvalue,
value,battery
battery
LCD
LCD
voltage,voltage,ororerror
errorcode
code
Turns
Turnsredredwhenwhenthethebattery
batteryvoltage
voltagedecreases
decreasesandandreachesreachesthethedischarge-cutoff
discharge-cutoffvoltage
voltage(3.6(3.6V);
V);notifies
notifies
Battery
Batteryalarm
alarmLEDLED
users
userstotoreplace
replacethe
thebatteries;
batteries;starts
startsblinking
blinkingwhen
whenthethebattery
batteryvoltage
voltagedecreases
decreasestoto3.2
3.2V Vororlower
lower
Calibration
Calibrationdate
datelabellabel IndicatesIndicatesthe
thecalibration
calibrationdate;
date;dodonot
notremove
removethethelabel
label

⑥⑥ DC
DCjackjack(For(ForuseuseininJapan
Japanonly.
only.
Used
Usedtotoconnect
connectthe
the
AC
AC
adaptor.)adaptor.)⑦⑦ Battery
Batterycompartmentcompartment Houses
Housesfour
fourAA
AAbatteries
batteries⑧⑧ Sample
Sampletube
tube

0.8
0.8mlmlsample
samplecontainer
containerwith
withcapcap⑨⑨ Spatula
SpatulaUsed
Usedtotocollectcollectgrease
greasesample
sample- -4 4- -7.7.Operation
Operation
7-1.
7-1.Battery
BatteryInstallation
Installation
Open
Openthethebattery
batterylid.
lid.Insert
Insertfour
four
AA
AA
batteries
batteriesininthe
thecorrect
correctorientation
orientation(polarity(polarity+/-).
+/-).
Press
Press
down
down
the
the
battery
batterylidlid
above
above
the
the
batteries
batteries
and
and
slide
slide
it to
it to
close.
close.

FigureFigure2.2.Battery
BatteryInstallation
Installation

7-2.
7-2.Battery
BatteryCheck
Check
Set
Setthetheselector
selectorswitch
switchtotoBATT.
BATT.“―“―――――――” ”will
willbebedisplayed
displayedononthe
theLCD
LCDforfora afew
few
seconds,
seconds,andandthenthenit itwill
willbebereplaced
replacedbybythe
thebattery
batteryvoltage.
voltage.
b b 5.5. 6 6Battery
Batteryvoltage
voltageisis5.6
5.6V.V.

b b 3.3. 6 6

When
Whenthethebattery
batteryvoltage
voltageexceeds
exceeds3.6
3.6V,V,thetheunitunitisisready
readyforfor
use.
use.When
Whenthethevoltage
voltagedecreases
decreasestoto3.6
3.6V Vororlower,
lower,thethebattery
batteryalarm
alarmLED
LEDwill
willturn
turnred,red,indicating
indicatingthat
thatthethebatteries
batteriesneedneedtotobebe
replaced
replacedwith
withnew
newones.
ones.
Whenthethebattery
batteryvoltage
voltagedecreases
decreasestoto3.2
3.2V Vororlower,
lower,thetheWhenbatteryalarm
alarmLED
LEDwill
willstart
startblinking
blinkingand
andthetheunitunitwill
willstart
start
battery
beepingindicating
indicatingthat
thatthethebatteries
batteriesneedneedtotobebeimmediately
immediately
beeping
replacedwith
withnew
newones.
ones.If Ifyou
youcontinue
continuetotouse
usethetheunitunitwithout
without
replacedbatteryreplacement,
replacement,P.P.OFF
OFF(power(poweroff)off)will
willbebedisplayed,displayed,thenthenbatterythetheunitunitwill
willbebeshut
shutdown.
down.

b b 3.3. 2 2

CAUTIONCAUTION

NOTE
NOTE• •Accurate
Accuratemeasurement
measurementisisnot
notpossible
possibleif ifthethebattery
batteryalarm
alarm
LED
LEDisislitlitororblinks.
blinks.Replace
Replacethe
thebatteries
batterieswith
withnew
newones.
ones.
• •Replace
Replaceallallthe
thefourfourbatteries
batteriesatatthe
thesamesametime.
time.
If Ifthethebattery
batteryvoltage
voltagedecreases
decreasestoto3.6
3.6V Vororlower
lowerwhile
whilethetheselector
selectorswitch
switchisisininthe
theMEAS
MEASposition,
position,thethebattery
batteryalarm
alarmLEDLED
will
willturn
turnred.
red.If Ifthethebattery
batteryvoltage
voltagedecreases
decreasestoto3.2
3.2V Vororlower
lower
while
whilethetheselector
selectorswitch
switchisisininthe
theMEAS
MEASposition,
position,thethebattery
batteryalarm
alarmLED
LEDwill
willstart
startblinking
blinkingand
andthetheunitunitwill
willstart
startbeeping
beepingininthethesamesameway
wayasaswhen
whenthetheswitch
switchisisininthe
theBATT
BATTposition.
position.
- -5 5- -Insertthe
thesample
sampleInsert7-3.
7-3.Taking
TakingMeasurements
Measurements
tubeinto
intothethetube(1)(1) Set
Setthetheselector
selectorswitch
switchtotoMEAS
MEAStotoenter
enter sampling
samplingportportwithwithmeasurement
measurementmode.
mode.
thisflatflatsurface
surfacethisfacingforward
forwardfacing(2)(2) Ensure
Ensurethatthat 0 0. 0. 00 00 0 appears
appearsononthe
the
LCD
LCDwithwithnonosample
sampletube
tubeinserted.
inserted.
(3)(3) Completely
Completelyinsert
insertthe
thesample
sampletube
tubefilled
filledwithwiththethegreasegreasesample
sampleinto
intothethesampling
sampling
port.
port.

Sampletube
tube
SampleNote:
AAsampleNote:sampletube
tubehashasa acertain
certainorientation.
orientation.
InsertInsertthe
thesample
sampletube
tubeinto
intothethesampling
samplingport
port
with
withitsitsflat
flatsurface
surfacefacing
facingforward.
forward.For
Forthethegreasegreasesampling
samplingmethod,
method,refer
refertotopage
page7.7.
(4)(4)When
Whenthethemeasurement
measurementisiscomplete,complete,thetheunit
unitwill
willgivegivea ashort
shortbeep.
beep.The
Thereading
readingisis
displayeddisplayedononthe
theLCD.
LCD.Record
Recordthe
thereading.
reading.
(5)(5) Remove
Removethethesample
sampletube
tubefrom
fromthetheport.
port.
Figure3.3.Sample
SampleTube
TubeInsertion
Insertion
FigureThe
Thereading
readingwill
willreturn
returntoto 0 0. 0. 00 00 0. .
(6)(6)Return
Returnthe
theselector
selectorswitch
switchtotoOFF
OFFtotoend
end
thethemeasurement.
measurement.

CAUTIONCAUTION• •Accurate
Accuratemeasurement
measurementisisnot
notpossible
possibleif ifananempty
emptysample
sampletube
tubeisisinserted.
inserted.
• •Avoid
Avoidcausing
causingany
anyimpact
impactandandslowly
slowlyinsert
insertthe
thesample
sampletube
tubeinto
intothethesampling
sampling
port.
port.Failure
Failuretotododososomay
maycausecausethethereading
readingtotodrift.
drift.Inserting
Insertingthe
thesample
sampletube
tube
tootooslowly
slowlymay
mayalsoalsocause
causethethereading
readingtotodrift.
drift.If Ifa adrift
driftoccurs,
occurs,remove
removethethesamplesampletube
tubefrom
fromthethesampling
samplingport,
port,andandthenthenreinsert
reinsertit.it.
• •Once
Onceyouyouinsert
insertthe
thesample
sampletube
tubeininthe
thesampling
samplingport,
port,dodonot
notmovemoveit ituntil
untilthetheunit
unitgives
givesa ashort
shortbeep
beepindicating
indicatingmeasurement
measurementcompletion.
completion.Impact
Impactduring
duringmeasurement
measurementmay
maycausecausea adrift
driftininthe
thereading.
reading.
• •During
Duringmeasurement,
measurement,whenwhenholding
holdinga asample
sampletube
tubeininyour
yourfingers,
fingers,holdholditsits
grip
gripsosoasasnot
nottotowarm
warmthethesample.
sample.Failure
Failuretotododososomay
maycausecausea adrift
driftininthe
thereadingreadingbecause
becauseofofa atransfer
transferofofbody
bodyheat.
heat.
• •If Ifthe
thetemperaturetemperatureofofthe
thesampled
sampledgrease
greaseisishigh,high,allow
allowit ittotocool
cooldown
downtoto
normalnormaltemperaturetemperaturebefore
beforemeasurement.
measurement.

- -6 6- -7-4.
7-4.Grease
GreaseSampling
Sampling
It Itisisnecessary
necessarytototake
takea agrease
greasesample
sampleexpelledexpelledfrom
fromthetherotatingrotatingmachinery
machineryatatthe
thetimetime
ofofgrease
greaselubrication,
lubrication,and
andtotofillfillthe
thesample
sampletube
tubewithwithit itusing
usingthethespatula
spatulaprovided.
provided.When
Whenlubricating
lubricatingthe
therotatingrotatingmachinery
machinerywith
withfresh
freshgrease,grease,layers
layersofofdiscoloreddiscoloredoldoldgreasegreaseandandfresh
freshgrease
greaseare
areexpelledexpelledtogether.
together.Take
Takea agrease
greasesample
samplefrom
fromthethemostmostdiscoloreddiscoloredlayer.
layer.

7-5.
7-5.Sample
SampleTube
TubeFilling
Filling(1)(1) Fill
Fillthethesample
sampletube’s
tube’smeasuring
measuringgroove
groovewithwiththethegreasegreaseononthe
thespatula.
spatula.Ensure
Ensurethat
thata aslightly
slightlyexcessive
excessiveamountamountisisfilled
filledand
andnonoairairisispresent.
present.

(2)(2) Scrape
Scrapeoffoffthetheexcessive
excessivegrease
greasewith
withthethespatulaspatulatotoobtainobtaina avolume
volumeofof0.8
0.8mlmlofofthethespecimen.
specimen.

(3)(3) Wipe
Wipeoffoffany
anyexcessive
excessivegrease
greaseremaining
remaining
ononthethebody
bodyofofthe
thesample
sampletube
tubewith
witha atissuetissueororsoft
softcloth.
cloth.Attach
Attachthe
thecapcaptotothe
the
tube.
tube.

AttachAttach
the
the
cap
cap

Cap
Cap

FigureFigure4.4.Sample
SampleTube
TubeFilling
Filling

CAUTIONCAUTION• •While
Whilesampling,sampling,ensure
ensurethat
thatnonodust,
dust,dirt,
dirt,ororrust
rustentersentersthethesamplesamplefrom
fromthethesurrounding
surroundingareas.
areas.
• •TheThereading
readingmay
mayvaryvaryaccording
accordingtotothe
thesampling
samplinglocation,
location,
becausebecausesteel
steeldusts
dustsdodonot
notspreadspreadevenly
evenlyininwaste
wastegrease.
grease.
Take
Takea afew
fewsamples
samplesinina afew
fewdifferent
differentlocations
locationstotoobtainobtaina amaximum
maximumorormajority
majorityvalue.
value.Take
Takea agrease
greasesample
samplefrom
fromthethemostmostdiscoloreddiscoloredlayer.
layer.
• •Refer
Refertotothe
theAppendix
Appendix(page(pageiv)iv)forforthe
thecorrelation
correlationbetween
betweenthethesteelsteeldust
dustconcentration
concentrationand
andthethebearing
bearingwear
wearstatus.
status.

- -7 7- -8.8.Error
ErrorCodes
Codes
InIncasecaseofofananerror,
error,thethecorresponding
correspondingerror
errorcode
codeisisdisplayed
displayedononthe
theLCD.
LCD.Take
Takethethenecessarynecessaryaction
actionaccording
accordingtotothe
thedisplayed
displayederror
errorcode,
code,asaswellwellasasmeasures
measuressuggested
suggested
ininthethenext
nextsection,section,“Troubleshooting”.
“Troubleshooting”.
Table
Table1.1.Error
ErrorCode
CodeTable
Table
Error
Errorcode
code
ononscreen
screen

――
――
――
――

Cause
Cause

ActionActionRemovethethesample
sampletube
tubefrom
fromCannotCannotstart
startzerozeroadjustment
adjustmentbecause
because Removethetheunitunitandandwaitwaituntil
until“0.000”“0.000”isisthetheunitunitwaswasturned
turnedononwhile
whilethethedisplayeddisplayedbefore
beforeusing
usingagain
again
greasegreasesample
samplewas
wasinserted
inserted

Measurementerror
error(Blinking)(Blinking) Measurement
GreaseGreasesample
samplewas
wasremoved
removedfrom
fromthetheunitunitbefore
beforethethecompletion
completionofof
measurement
measurement
P.P.OFFOFF

Unit
Unitwaswasforcedly
forcedlyturned
turnedoffoffbecause
becausethethebattery
batteryvoltage
voltageisistoo
toolow
low

Err.
Err.E E

DeviceDeviceerror
error
Non-volatile
Non-volatilememory
memorywrite
writeerror
error

Err.
Err.r rDeviceDeviceerror
error
Non-volatile
Non-volatilememory
memoryread
readerror
error

Err.
Err.S S
Err.
Err.A A
Err.
Err.F F

RemoveRemovethethesample
sampletube
tubefromfromthetheunitunitand
andreinsert
reinsertit,it,thenthenmeasuremeasureagain
again
Set
Setthetheselector
selectorswitch
switchtotoOFF,
OFF,
andandthenthensetsetit ittotoBATT
BATToror
MEAS
MEAS

Set
Setthetheselector
selectorswitch
switchtotoOFF,
OFF,
andandthenthensetsetit ittotoBATT
BATToror
DeviceDeviceerror
error
MEAS.If Ifthetheerrorerrorcode
codeisisstill
still
Non-volatile
Non-volatilememory
memorycheck
checksumsumerrorerror MEAS.
displayed,displayed,repair
repairisisnecessary
necessary
DeviceDeviceerror
error
NoNoresponse
responsefrom
fromthetheAD
ADconverter
converter

DeviceDeviceerror
error
AbnormalAbnormalsensor
sensoroutput
output- -8 8- -9.9. Troubleshooting
Troubleshooting
BeforeBeforecontacting
contactingususforforservice
servicerepairs,
repairs,pleasepleaseperformperformbasic
basictroubleshooting
troubleshootingusing
usingthethetable
tablebelow.
below.
Table
Table2.2.Troubleshooting
Troubleshooting
Symptom
Symptom

Cause
Cause

Setting
Settingthe
theselector
selectorswitch
switch ・・
Battery
Batterydepleted
depleted
totoBATT
BATTororMEAS
MEASdoesdoesnotnot
turn
turnononthe
theLCD
LCD
・・
Incorrect
Incorrectbattery
batteryorientation
orientation

ActionAction・・
Replace
Replacethe
thebatteries
batteries
withwithnew
newonesones(page(page5)5)・・
RemoveRemoveandandreinsert
reinsert
batteries
batteriesininthe
thecorrect
correctorientation
orientation(page(page5)5)
Battery
Batteryalarm
alarmLED
LEDisislitlitoror ・・
Battery
Batteryisislow
loworordepleted
depleted ・・
Replace
Replacethe
thebatteries
batteries
blinking
blinking
withwithnew
newonesones(page(page5)5)
Batteryalarm
alarmLED
LEDisislitlitoror ・・
Incorrectbattery
battery
Removeandandreinsert
reinsert
Battery
Incorrect
・・
Removeblinkingeven
evenafter
afternewneworientation
batteriesininthe
thecorrect
correct
blinkingorientation
batteries
batteriesare
areinstalled
installedorientation(page(page5)5)
batteries
orientation
・・
GreaseAllow
Greasesample
sampleisistoo
toohothot ・・
Allowthethesample
sampletotocool
cool
On-screen
On-screenreading
readingisis
totomeasuredownmeasuredownbefore
beforemeasuring
measuring
unstable
unstableduring
during(page(page6)6)
measurement
measurement
・・
SampleHold
Sampletube
tubeisiswarmed
warmed ・・
Holdthethesample
sampletube
tubebyby
bybyfingers
itsitsgrip
fingers
gripduring
duringmeasurement
measurement(page(page6)6)
“―“―
――
――
――
“ blinks“ blinksononthe
the
・・
Unit
Unitwaswasturned
turnedononwhile
while ・・
RemoveRemovethethesample
sampletube
tube
LCD
LCD
greasegreasesample
sample(sample(samplefromfromthetheunitunitandandwaitwait
tube)tube)waswasinserted
inserted
until
until“0.000”“0.000”isisdisplayed
displayed
beforebeforeusing
usingagain
again“0.000”
Optical
Opticalsensor
sensoratatthe
the
・・
Wipe
Wipethetheoptical
opticalsensor
sensor
“0.000”isisnot
notdisplayed
displayedoror ・・
“―“―
――
――
――
“ blinks“ blinksononthe
thesampling
samplingportportisisdirty
dirty
with
witha acotton
cottonswab
swaboror
LCD
LCDevenevenafter
aftergrease
greasecloth
clothtotoremove
removedirt
dirtsamplesample(sample(sampletube)tube)isis
removedremovedReading
Readingdoes
doesnot
notchangechangeeven
evenwhenwhengrease
greasesample
sample(sample(sampletube)tube)isisinserted
inserted
Reading
Reading
Readingdoes
doesnot
notbecomebecome ・・
Readinghas
hasbeenbeen
・・
InsertInserta asample
sampletube
tubefilled
filled“0.000”calibrated“0.000”evenevenwhenwhenthere
thereisis
calibratedtoto“0.000”“0.000”byby
withwithfresh
freshgrease,grease,then
thennonogreaseusing
greasesample
sampleininthe
theusingfresh
freshgrease.
grease.It Itisis
checkcheckthat
thatthethereading
reading
samplenotsampletube
tube
notpossible
possibletotocheck
check
becomesbecomes“0.000”“0.000”“0.000”“0.000”bybyusing
usingairair
Error
Refer
Errorcode
codeisisdisplayed
displayed
Refertotothe
theError
ErrorCode
CodeTable
Tableononpage
page8 8

- -9 9- -10.
10.Warranty
Warranty
The
Thewarranty
warrantyperiod
periodisisone
one(1)(1)year
yearfrom
fromthethedatedateofofpurchase.
purchase.
You
Youareareentitledentitledtotolimited
limitedwarranty
warrantyif ifthetheproductproductmalfunctions
malfunctionsdue
duetotoa amanufacturing
manufacturing
defectdefectduring
duringnormal
normaluse,use,ininaccordance
accordancewith
withthetheinstruction
instructionmanual,
manual,specifications
specificationsand
andlabels.
labels.
Warranty
WarrantyScope
Scope
If Ifthetheproductproductfails
failsororisisfound
foundtotobebedamaged
damageddue
duetotoa amanufacturing
manufacturingdefectdefectduring
duringthe
thewarranty
warrantyperiod,
period,and
andusedusedininaccordance
accordancewith
withthetheinstruction
instructionmanual
manualand
andspecifications,specifications,wewewillwillprovide
providea afree
freereplacement
replacementand
andrepair
repairservices.
services.This
Thiswarranty
warrantycovers
coversthetheNew
New
CosmosCosmosproduct/parts
product/partsonly
onlyandandnotnotthird-party
third-partyproduct/parts.
product/parts.
Warranty
WarrantyExclusions
Exclusions
The
Thefollowing
followingwill
willbeberepaired
repairedatatthe
thecostcostofofcustomer
customereven
evenduring
duringthe
thewarranty
warrantyperiod:
period:(1)(1) Failures
Failuresandanddamages
damagesincurred
incurredbybyincorrect
incorrectuse,use,deliberatedeliberateacts
actsorornegligence
negligenceonon
thethepartpartofofthe
theuseruser(2)(2)Failures
Failuresandanddamages
damagescaused
causedbybydisasters
disasterssuch
suchasasearthquakes,
earthquakes,storms
stormsandandfloods,
floods,lightning,lightning, extreme
extreme climate,climate, abnormal
abnormal power
power supply
supply voltages,
voltages, excessive
excessive
electromagnetic
electromagneticinterferences,interferences,ororother
otheracts
actsofofGodGod(3)(3) Failures
Failuresandanddamages
damagesresulting
resultingfrom
fromrepair
repairand/or
and/ormodification
modificationbybynon-New
non-New
CosmosCosmoscertified
certifiedtechnicians
technicians(4)(4) Consumables
Consumablesand
andfailures
failuresandanddamages
damagesresulting
resultingfrom
fromimproper
improperconsumableconsumablereplacement
replacement(5)(5) Other
Otherfailures
failuresandanddamages
damagesnot
notattributable
attributabletotothe
themanufacturer
manufacturer

11.
11.Maintenance
Maintenance
InInorderordertotoensure
ensurethe
theaccurate
accurateoperation
operationofofthis
thisproduct,
product,it itisisvital
vitaltotoperformperformperiodic
periodicmaintenancemaintenanceand
andinspection.
inspection.It Itisishighly
highlyrecommended
recommendedthat
thata amaintenancemaintenancecontract
contractwith
witha aNew
NewCosmos
Cosmoslocal
localrepresentative
representativebebemade
madeforforannual
annualmaintenancemaintenanceand
andinspections.
inspections.

- -1010- -12.
12.Specifications
Specifications
Model
Model

SDM-72
SDM-72

Measuring
Measuringprinciple
principle

Magnetic
Magneticbalance-typebalance-typeelectromagnetic
electromagneticinduction
inductionmethod
methodTargetTargetMeasurement
Measurementrange
range

Steel
Steeldust
dustconcentration
concentrationiningrease
grease0 0toto5.000
5.000%Wt%Wt

Concentration
Concentrationdisplay
display

Four
Fourdigit
digitLCD
LCD

Resolution
Resolution
Accuracy
Accuracy

0.001
0.001%Wt%Wt± ±(10(10%reading%reading+ +1010digits)
digits)ComparedComparedwith
withthethevalue
valuemeasured
measuredbybyICP
ICPanalysis
analysisononthethecompany
companystandard
standardgrease
greasesample
sampleAutomatic
Automaticadjustment
adjustment

Zero
Zeroadjustment
adjustment

SampleSamplevolume
volume0.8
0.8mlml
Power
Powersupply
supplyAA
AAbatteries
batteriesx x4 4pcs
pcs
Continuous
Continuousoperating
operatingtime
time Approx.
Approx.3030hours
hours
OperatingOperatingtemperaturetemperature
0 0toto4040ºCºC
Dimensions
Dimensions
Mass
Mass
Compliance
ComplianceApprox.
Approx.W84
W84× ×H190
H190× ×D40
D40mm
mm
Approx.
Approx.500
500g g(including(includingbatteries)
batteries)
EMC
EMCdirective
directive( 2014/30/EU/SI( 2014/30/EU/SI2016
2016No.1091
No.1091) and
) and
RoHS
RoHSdirective
directive( 2011/65/EU+(EU)2015/863/SI( 2011/65/EU+(EU)2015/863/SI2012
2012
No.3032
No.3032) )

・・
Above
Abovespecifications
specificationsmay
maybebesubject
subjecttotochangechangewithout
withoutnotice
noticeforforproductproductimprovement.
improvement.
・・%Wt%Wt= =weightweightratio%
ratio%- -1111- -Appendix:
Appendix:Measuring
MeasuringPrinciple
Principle
A1.
A1.Magnetic
MagneticBalance-Type
Balance-TypeElectromagnetic
ElectromagneticInduction
InductionMethod
MethodThis
Thisproductproductemploys
employsa amagnetic
magneticbalance-typebalance-typeelectromagnetic
electromagneticinduction
inductionmethod,
method,asas
illustrated
illustratedininthe
theFigure
FigureA1A1below,
below,asasitsitsmeasuring
measuringprinciple.
principle.
This
Thisisisa amagnetic
magneticcircuit
circuitsensor
sensorformed
formedbybyplacing
placinga adetection
detectioncoil
coilbetween
betweentwo
twoexciter
excitercoils,
coils,sosothat
thatmagnetic
magneticfields
fieldsgenerated
generatedbybythe
theexciter
excitercoils
coilsarearecanceled
canceledbybyeach
eachother,other,
resultingresultingininnonomagnetic
magneticfield
fieldaroundaroundthethedetection
detectioncoil.
coil.
The
Thedetection
detectioncoil
coildoesdoesnot
notnormallynormallygenerate
generateananinduction
inductionvoltage.
voltage.However,
However,when
whena agreasegreasesample
samplecontaining
containingiron
ironparticles
particlesisisinserted
insertedinto
intooneoneofofthe
theexciter
excitercoils,
coils,thethemagnetic
magneticpermeability
permeabilitywill
willchange,change,causing
causinga amagnetic
magneticimbalance,
imbalance,which
whichwill
willthenthencausecause
thethedetection
detectioncoil
coiltotogenerate
generateananinduction
inductionvoltage.
voltage.The
Theironironparticle
particleconcentration
concentrationininthe
thegreasegreasecancanbebemeasured
measuredbybymeasuring
measuringthe
theinduction
inductionvoltage.
voltage.

Oscillation
Oscillation
circuitcircuitFigureFigureA1.
A1.Magnetic
MagneticBalance-Type
Balance-TypeElectromagnetic
ElectromagneticInduction
InductionMethod
Method- -i -i -A2.
A2.Measurable
MeasurableMetals
MetalsTable
TableA1.
A1.Measureable
MeasureableandandNon-Measurable
Non-MeasurableMetals
Metals
Metal
Metal

Magnetic
Magneticproperty
property Measurable
Measurable

Iron,
Iron,nickel,
nickel,cobalt
cobaltFerromagnetic
Ferromagnetic

Aluminum,chrome,chrome,Aluminum,
manganese,titan,
titan,stainlessstainlessmanganese,steel(SUS-304,(SUS-304,SUS-316)
SUS-316)
steel

Paramagnetic
Paramagnetic

Remarks
RemarksХХ

Copper,silver,
silver,lead,
lead,zinc,
zinc,tintin
Copper,

Diamagnetic
Diamagnetic

Sodium,calcium,
calcium,lithium,lithium,
Sodium,molybdenum
molybdenum

Paramagnetic
Paramagnetic

Iron
iron
irondust
dust Paramagnetic
Paramagnetic
Ironoxideoxide(α-Fe
(α-Fe
2O
2O
3),3),(hydroxide(hydroxideiron)
iron)
Iron
, Fe
Ironoxideoxide(γ-Fe
(γ-Fe
2O
2O
3, 3Fe
3O
3O
4) 4)

✔✔

Ferromagnetic
Ferromagnetic

ХХ
ХХ
ХХ
✔✔

*1*1
*2*2

Theseareareraw
rawmaterials
materialsused
usedtotomake
makeoiloilthickeners.
thickeners.This
Thisproductproducthas
hasnono*1.*1.Thesesensitivitytotothem;
them;therefore,
therefore,they
theyhave
havenonoeffecteffectononthe
thereading
readingofofthe
thesensitivity
product.
product.
Thereareareseveral
severalisomers
isomersofofiron
ironoxide.
oxide.Some
Someofofthem
themcancanbebemeasured
measured*2.*2.Thereusingthisthisproductproductwhile
whileothers
otherscannot,
cannot,asasshown
shownininthe
thetabletableabove.
above.If Ifthe
the
using
specimencontains
containsred
redrustrustororif ifit itisismeasured
measuredininananenvironment
environmentwhere
wheresteel
steel
specimen
dustmay
mayeasily
easilyoxidize,oxidize,thethereading
readingmay
maybebeespecially
especiallylower
lowerthan
thanthetheactual
actualdust
concentrationvalue.
value.
concentration- -ii ii- -A3.
A3.Usage
Usage(1)(1)Major
MajorApplications
Applications• •Trend
Trendmanagement
managementand
andsimplified
simplifieddiagnosis
diagnosisofofwear
wearstatus
statusofofgrease-lubricatedgrease-lubricatedbearings
bearingsand
andgears
gears
This
Thisproductproductcan
canbebeused
usedtotocheck
checkthethelubrication
lubricationofoflow
lowtotohighhighspeed
speedrotatingrotating
machinery.
machinery.It Itisisespecially
especiallysuitable
suitablewhen
whenusedusedasasa asimplified
simplifieddiagnosis
diagnosisofofwear
wear
statusstatusofoflow
lowspeed
speedrotaryrotarybears
bearsandandgears,
gears,which
whichisisotherwise
otherwisedifficult
difficulttotodiagnose
diagnosewithwiththethevibration
vibrationanalysis
analysistechnique.
technique.It Itisispossible
possibletotoimprove
improvethe
thediagnosis
diagnosis
accuracy
accuracyofofmiddle
middleandandhighhighspeed
speedrotatingrotatingmachinery
machinerybybyusing
usingthisthisproductproductalong
along
with
witha avibration
vibrationmeter.
meter.
• •Preliminary
Preliminarydiagnosis
diagnosisforforSOAP
SOAPmethod,
method,ferrography
ferrographymethod,
method,etc.
etc.
This
Thisproduct’s
product’susage
usageleads
leadstotomaintenancemaintenancecost
costreduction.
reduction.

FigureFigureA2.
A2.Typical
TypicalApplications
Applications- -iii iii- -(2)(2)Correlation
Correlationbetween
betweenSteel
SteelDust
DustConcentration
Concentrationand
andBearing
BearingWear
WearStatus
Status
Table
Table
A2A2shows
showsthetheinspection
inspectionresult
result(correlation(correlationbetween
betweenthe
thesteelsteeldust
dust
concentration
concentrationand
andthethebearing
bearingwear
wearstatus)
status)ofofdisassemblingdisassemblingand
andchecking
checkingthe
thebearings
bearingsofofvarious
variousrotatingrotatingmachinery,machinery,e.g.,
e.g.,motors,
motors,pumps,
pumps,andandblowers.
blowers.
Table
TableA2.
A2.Correlation
Correlationbetween
betweenSteel
SteelDust
DustConcentrations
Concentrationsand
andBearing
BearingWear
WearStatus
StatusIron
Ironconcentration
concentration(%Wt)(%Wt)
NumberNumberofofbearings
bearingsand
andtheirtheirwear
wearstatus
status
0.3–1.0◆◆◆
0.3–1.0◆◆◆
0.1–0.3
0.1–0.3●●▲▲▲▲●●▲▲▲▲
0.05–0.1
0.05–0.1
●●●●●
●●●●●
0.03–0.05
0.03–0.05○○○○
0.01–0.03
0.01–0.03○○○○○○○○○○○○○○○○○○
0–0.01
0–0.01○○○○○○○○○○○○○○○○○○○○○○
Total
Totalnumber
numberofofbearings
bearingsinspected:
inspected:3636pieces
pieces◆:◆: Severe
Severewear
wear(continuous(continuousflaking
flakingononinner
innerring,
ring,outer
outerring,
ring,andandballs)
balls)▲:▲: Medium
Mediumwear
wear(partial(partialflaking
flakingononinner
innerring,
ring,outer
outerring,
ring,andandballs)
balls)●:●: Slight
Slightwear
wear(discoloration(discolorationand
andsmallsmallfretting
frettingononinner
innerandandouterouterrings)
rings)○:○: Normal
Normal(3)(3)Criteria
Criteria(Reference)(Reference)
The
Thecriteria
criteriaforforsteel
steeldust
dustconcentration
concentrationininthe
thegreasegreasesample
samplearearegiven
givenininTable
TableA3.
A3.
They
Theyarearesetsettotobeberelatively
relativelystrict
strictsosoasastotodetect
detectananabnormal
abnormaltrend
trendofofinitial
initialwear
wearatatananearly
earlystagestagetotoensure
ensurethat
thatyou
youtaketakeappropriate
appropriateand
andtimely
timelycorrective
correctivesteps
stepsthat
that
ensureensurelong
longlife
lifeforforyour
yourmachinery.
machinery.
The
Themachinery
machinerytype
typeandandcondition
conditionofofuse
usevary
varygreatly.
greatly.Hence,
Hence,these
thesecriteria
criteriaare
arenotnotsuitablesuitableforforallalltypes
typesofofmachinery.
machinery.It Itisisrecommended
recommendedthat
thatyou
youestablish
establishsuitable
suitable
operatingoperatingcriteria
criteriathroughthroughthe
thedatadataaccumulation
accumulationand
andtrend
trendmonitoring
monitoringofofthe
thesteelsteel
dust
dustconcentration
concentrationtendencies
tendenciesofofyour
yourmachinery.
machinery.
Table
TableA3.
A3.Typical
TypicalCriteria
CriteriaofofSteel
SteelDust
DustConcentration
ConcentrationininGrease
GreaseCriteria
Criteria Judgement
Judgement
ActionActionFillthethemachinery
machinerywith
withfresh
freshgrease
greaseandandmonitor
monitorthetheFill
Lessthanthan
LessNormalNormalsteeldust
dustconcentration
concentrationtrend
trendatata anormal
normalfrequency
frequency
steel
0.05%
0.05%
Fill
Fillthethemachinery
machinerywith
withfresh
freshgrease
greaseimmediately,
immediately,andand
0.05–0.1%
0.05–0.1% OfOfCaution
Cautionthen
thenmeasure
measurethe
theconcentration
concentrationagain
againafter
afterone
onemonthmonth
MeasureMeasurethe
theconcentration
concentrationatatshorter
shorterintervals;
intervals;
Greater
Greater
AbnormalAbnormal performperforma athoroughthoroughexamination;
examination;taketakenecessary
necessarythan
than0.1%
0.1%
corrective
correctiveaction
action(e.g.,(e.g.,improvement
improvementofoflubrication)
lubrication)- -iviv- -(4)(4)Measurement
MeasurementCycle
Cycle
ToTomeasure
measurethe
thesteelsteeldust
dustconcentration
concentrationiningrease,grease,it itisisnecessary
necessarytototake
takea asample
sampleofofthethegreasegreasewaste
wasteexpelledexpelledfrom
fromthetherotatingrotatingmachinery.
machinery.Therefore,
Therefore,performing
performinga ameasurement
measurementwhen
whenlubricating
lubricatingthe
themachinery
machinerywith
withfresh
freshgrease
greaseasasa apartpartofof
periodical
periodicalmaintenancemaintenanceisisefficient.
efficient.The
Thelubrication
lubricationcycle
cycleshould
shouldbebedetermined
determinedupon
upon
considering
consideringthe
thetype,type,specifications,specifications,andandoperating
operatingconditions
conditionsofofthethemachinery.
machinery.The
The
typicaltypicalmeasurement
measurementcycles
cyclesarearegiven
givenininTable
Table
A4A4asasreference.
reference.
If Ifananabnormal
abnormaltrend
trendisisdetected
detectedininthe
thesteelsteeldust
dustconcentration
concentrationmeasurement,
measurement,
shortenshortenthe
themeasurement
measurementcycle
cycledepending
dependingononthe
theabnormality
abnormalitylevel.
level.Lubricating
Lubricatingatat
shorter
shorterintervals
intervalshelps
helpsslow
slowthetheprogress
progressofofwear,
wear,which
whichwill
willthenthenprolong
prolongthe
thelifelifeofofthethemachinery.
machinery.
Table
TableA4.
A4.Typical
TypicalMeasurement
MeasurementCycle
Cycle
Equipment
Equipment
Frequency
Frequency
Lowspeed
speedrotatingrotatingmachinery
machineryLowusedatatnormal
normaltemperaturestemperatures
used
Every3 3toto6 6months
monthsEvery
Mediumandandhighhighspeed
speedrotatingrotatingmachinery
machineryMediumusedatatnormal
normaltemperaturestemperatures
used
Lowspeed
speedrotatingrotatingmachinery
machinery
Low
Every1 1toto4 4months
monthsEveryusedatathighhightemperaturestemperaturesused- -v v- -(5)(5)Trend
TrendManagement
Managementand
andSimplified
SimplifiedDiagnosis
DiagnosisofofBearing
BearingWear
Wear
A Asimplified
simplifieddiagnosis
diagnosisofofbearing
bearingwear
wearbybya asingle
singlesteel
steeldust
dustconcentration
concentration
measurement
measurementisispossible,
possible,butbutit itisisimportant
importanttotoperformperformtrend
trendanalyses
analysesofofthe
thewearwear
throughthroughperiodical
periodicalmeasurements.
measurements.
DuringDuringnormal
normalconditions,conditions,thethesteelsteeldust
dustconcentration
concentrationininthe
thegreasegreasechanges
changeswithin
withinthethevery
verylow
lowconcentration
concentrationzone.
zone.AsAsbearing
bearingwear
wearprogresses,
progresses,thetheconcentration
concentration
naturallynaturallytends
tendstotoincrease.
increase.
ThroughThroughtrend
trendanalyses,
analyses,it itisispossible
possibletotobebeaware
awareofofthe
theincreasing
increasingtrend
trendofofthe
theconcentration
concentrationatatthe
theinitial
initialwear
wearstagestageandandmanage
manageit itasasa aresult.
result.Also,
Also,bear
bearininmind
mind
that
thatappropriate
appropriatelubrication
lubricationatatthe
theinitial
initialwear
wearstagestageprolongs
prolongsthe
thebearing’s
bearing’slife.
life.
FigureFigureA3A3shows
showsa asuccessful
successfulexample
exampleofofutilizing
utilizingtrend
trendmanagement,
management,where
where
correct
correctlubrication
lubricationwas
wasperformed
performedwhen
whena aprematureprematurelubrication
lubricationtrend
trendofofthethebearing
bearingusedusedininananagitator
agitatorwas
wasidentified.
identified.
ActionActiontaken
taken(fresh(freshgrease
greasesupply
supplywaswasincreased)
increased)
Abnormalzone
zone
AbnormalCautionCautionzone
zone
NormalNormalzone
zone

Time
Timeelapsed
elapsed(months)(months)
FigureA3.
A3.Trend
TrendManagement
ManagementthroughthroughSteel
SteelDust
DustConcentration
ConcentrationMeasurements
Measurements
Figure- -vivi- -(6)(6)IronIronParticle
ParticleDiameter
DiameterandandDetection
DetectionRange
RangeComparison
Comparisonamong
amongMeasuring
Measuring
Methods
Methods
It Itisisvery
veryuseful
usefultotocheck
checkthethecondition
conditionofofwear
wearparticles
particlesininlubricating
lubricatingoil/grease
oil/greaseasasa amethodmethodtotodiagnose
diagnoseand
andforecast
forecastthe
thedamagedamageororwear
wearprogression
progressionofofthethegears
gearsandandbearings.
bearings.
SOAP
SOAP(e.g.,(e.g.,ICP
ICPanalysis)
analysis)andandferrography
ferrographyare
arecommonlycommonlyused
usedforformeasuring
measuringthe
the
steel
steeldust
dustconcentration
concentrationininoil/grease.
oil/grease.
FigureFigureA4A4provides
providesa aconceptual
conceptualdiagram
diagramofofthe
thedetection
detectionrange
rangeofoffour
fourmethods
methods(ICP,(ICP,analyticalanalyticalferrography,
ferrography,quantitative
quantitativeferrography
ferrographyand
andSDM-72/73)
SDM-72/73)andandthetherelationshiprelationshipbetween
betweenparticle
particlediameter
diameterand
anddetected
detectedvalue.
value.

FigureFigureA4.
A4.IronIronParticle
ParticleDiameter/Detection
Diameter/DetectionRange
RangeComparison
Comparison
Generally,
Generally,SOAP
SOAP(e.g.,(e.g.,ICP
ICPanalysis)
analysis)isisconsidered
consideredunsuitableunsuitableforfordetecting
detectinglarge
large
particles
particles(5(5μmμmororlarger
largerinindiameter).
diameter).On
Onthe
theotherotherhand,
hand,thetheSDM-72/73
SDM-72/73meter
meterhas
has
highhighsensitivity
sensitivityforforlarge
largeparticles,
particles,which
whichdirectly
directlylead
leadtotofatal
fataldamage.
damage.The
TheuseuseofofthetheSDM-72/73
SDM-72/73meter
meterdoes
doesnot
notrequire
requireany
anyspecial
specialknowledge.
knowledge.The
TheSDM-72/73
SDM-72/73
meter
meterenables
enablesthe
theuserusertotoeasily
easilyandandquickly
quicklydetect
detectabnormal
abnormalwear
wearcondition
conditionatatanan
early
earlystagestageandandononsite.
site.

*SOAP:*SOAP:
SpectrometricSpectrometric
OilOilAnalysisAnalysis
Program
Program*ICP:*ICP:
Inductively
Inductively
Coupled
CoupledPlasmaPlasma- -viivii- -(7)(7)Comparison
Comparisonbetween
betweenSDM-Measured
SDM-MeasuredValues
ValuesandandICP-Analyzed
ICP-AnalyzedValues
ValuesThe
Thewearwearparticles
particlesininoil/grease
oil/greasesampled
sampledfrom
fromactual
actualmachinery
machineryare
area amixture
mixtureofof
variousvariousingredients
ingredientsofofdifferent
differentshapes.
shapes.The
Thequantity
quantityand
andproperties
propertiesofofwear
wear
particles
particlesininananoil/grease
oil/greasesample
samplediffer
differdepending
dependingononthe
thesampling
samplinglocation
locationandandoperatingoperatingconditions,conditions,which
whichcauses
causesthethereading
readingtotovary
varyininthe
theend.
end.

Steel dust concentration in ppm
Steel dust concentration in ppm

On
Onplacingplacingthe
theICP-analysis
ICP-analysisvalues
valuesfrom
fromsmallest
smallesttotolargest
largestandandthenthencomparing
comparingthemthemwith
withthetheSDM-measured
SDM-measuredvalues
values(as(asshown
shownininFigures
FiguresA5A5and
andA6),
A6),thetheSDM-measured
SDM-measuredvalues
valuesarearewell
wellcorrelated
correlatedwith
withthose
thoseofofthe
theICP-analysis.
ICP-analysis.Therefore,
Therefore,
wewebelieve
believethat
thatthetheSDM-72/73
SDM-72/73meter
meterisiscapable
capableenoughenoughtotobebeused
usedasasa aportableportableanalyzer
analyzerforforproviding
providinga asimplified
simplifiedpreliminary
preliminarydiagnosis
diagnosisononsite.
site.

SampleSampleNos.
Nos.1 1toto1616
FigureFigureA5.
A5.Concentration
ConcentrationComparison
Comparisonbetween
betweenSDM-73
SDM-73andandICP
ICP*1.*1.
Large-peeled
Large-peeled
wear
wear
particles
particles
are
are
mixed
mixed
in in
SampleSample
Nos.
Nos.
1515
and
and
16:
16:
InIn
the
the
ICP
ICP
analysisanalysisofofaasamplesamplecontaining
containing
large-peeledlarge-peeled
wear
wear
particles,
particles,
aa
large
large
error
error
is is
likelylikelytoto
occur.
occur.This
Thisoften
oftenresults
resultsin ina alower
lowerreading.
reading.This
Thisphenomenon
phenomenonis iscaused
causedasasa aresult
resultofofthe
theincomplete
incompleteluminescentluminescent
reactionreactionofofmetal
metalparticles.
particles.On
Onthe
theotherotherhand,
hand,thetheSDM-73
SDM-73meter
meteris iscapablecapableofofmeasuring
measuringa asample
samplecontaining
containingsuch
suchlarge
largeparticles
particlesbecause
becauseit itis isdesigned
designedtoto
detectdetectthethechangechangein inpermeability.
permeability.It Itis isalso
alsoreported
reportedthat
thatpermeability
permeabilitychangechangeis isaffectedaffectedbyby
wear
wear
particles’
particles’
size
size
and
and
shape,
shape,
forforexample,example,if needle-shaped
if needle-shaped
wear
wear
particles
particlesoror
flattened
flattened
wear
wear
particles
particlesare
arelongitudinallylongitudinallylined
linedup,up,thethemetermetergives
givesa ahigher
higherreading.
reading.Normally
Normallythe
theparticles
particlesarearein ina arandom
randomorientation,orientation,and
andsomesomeparticles
particlesline
lineupuplongitudinallylongitudinallytotosome
someextent,
extent,which
which
causescausesthethe
SDM-measured
SDM-measured
value
value
toto
bebe
higherhigher
than
than
the
the
ICP-analyzed
ICP-analyzed
one.
one.
This
This
phenomenon,
phenomenon,
however,
however,
is is
onon
the
the
safe
safe
side
side
from
fromthetheviewpoint
viewpointofofdetecting
detectinganan
abnormality
abnormality
atat
anan
early
early
stage.
stage.
Therefore,
Therefore,
weweconcludeconclude
that
that
the
the
use
use
ofof
SDM-73
SDM-73
meter
meter
is is
practical.
practical.

- -viiiviii- -Steel dust concentration in %Steel dust concentration in %SampleNos.
Nos.1 1toto1010
SampleFigureFigureA6.
A6.Concentration
ConcentrationComparison
Comparisonbetween
betweenSDM-72
SDM-72andandICP
ICP*2.*2.
Red
Red
rust
rust
is is
formedformedin in
SampleSample
No.
No.
10:
10:
If Ifwater
waterentersentersthethelubricating
lubricatingoil/grease
oil/greaseand
andcauses
causesformation
formationofofred
redrustrust(iron(ironoxides),oxides),it itmeansmeansthat
thatthethepolluted
polluted(rusted)(rusted)wear
wearparticles
particleshave
havelost
losttheir
theirmagnetic
magneticproperties.
properties.InInthis
this
case,
case,thetheSDM-72
SDM-72meter
metergives
givesa alower
lowerreading.
reading.Note
Notethatthatit itis ispossible
possibletotovisuallyvisuallyrecognize
recognize
this
this
abnormality
abnormality
becausebecausethethesamplesample
turns
turns
iron
iron
oxide
oxide
brown-red.
brown-red.
*3.*3.
Fretting
Fretting
occursoccursin in
SampleSample
Nos.
Nos.
66
and
and
9:9:
When
Whenobserved
observedunder
underananelectron
electronmicroscope,
microscope,it itwas
wasfoundfoundthat
thatmost
mostwear
wearparticles
particlesareareflattened
flattenedones
oneshaving
havingmetallic
metallic
lusterlusterand
andarearelarge
largein insize
size(250(250μmμmmax.)max.)That’s
That’swhy
whythethe
ICP-analyzed
ICP-analyzed value
value is is low.
low. Fluorescent
Fluorescent X-ray
X-ray
analysisanalysis did
did not
not detect
detect anyanyelectromagnetic
electromagnetic
materials
materialsexcept
exceptironiron(Fe).
(Fe).A Avery
verysmallsmallamountamountofofmanganesemanganese(Mn)(Mn)waswas
detected.
detected.

- -ixix- -ThisThispage
pageisisintentionallyintentionallyleft
leftblankblankRevision History
Document No.
Date
RevisionSDM-72CEET
June 2008
Initial issue
SDM-72CEET
July 201201
SDM-72CEET
August 201302
SDM-72CEET
June 201903
SDM-72CEET
July 202004
SDM-72CEET
July 2021
05
SDM-72CEET
September 2022
06
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