Oil Steel Dust Checker
SDM-73
Instruction Manual• Keep this manual for easy reference.
• Carefully read this manual prior to use.

TableTable ofof Contents
Contents1.
1. Introduction
Introduction.........................................................................................
.........................................................................................112.
2. Features
Features ofof thisthis ProductProduct .....................................................................
.....................................................................11
3.
3. Safety
Safety Precautions
Precautions..............................................................................
..............................................................................11
Symbols
Symbols Used
Used inin thisthis Manual
Manual.............................................................
.............................................................11
SafetySafety Precautions
Precautions..............................................................................
..............................................................................22
4.
4. Package
Package Contents
Contents ..............................................................................
..............................................................................33
5.
5. Consumables
Consumables......................................................................................
......................................................................................33
6.
6. Component
Component Names
Names andand Functions
Functions.....................................................
.....................................................44
7.
7. Operation
Operation............................................................................................
............................................................................................55
7-1.
7-1. Battery
Battery Installation
Installation.......................................................................
.......................................................................55
7-2.
7-2. Battery
Battery Check
Check..............................................................................
..............................................................................55
7-3.
7-3. Taking
Taking Measurements
Measurements.................................................................
.................................................................66
7-4.
7-4. Oil
Oil Sampling
Sampling................................................................................
................................................................................88
8.
8. Error
Error Codes
Codes ......................................................................................
......................................................................................1010
9.
9. Troubleshooting
Troubleshooting................................................................................
................................................................................11
11
10.
10. Warranty
Warranty ...........................................................................................
...........................................................................................1212
11.
11. Maintenance
Maintenance.....................................................................................
.....................................................................................1212
12.
12. Specifications
Specifications....................................................................................
....................................................................................13
13
Appendix:
Appendix: Measuring
Measuring Principle
Principle...................................................................
...................................................................ii
A1.
A1. Magnetic
Magnetic Balance-Type
Balance-Type Electromagnetic
Electromagnetic Induction
Induction Method
Method................
................ii
A2.
A2. Measurable
Measurable Metals
Metals..............................................................................
.............................................................................. iiii
A3.
A3. Usage
Usage..................................................................................................
..................................................................................................iiiiii(1)(1) Major
MajorApplications
Applications...............................................................................
...............................................................................iiiiii(2)(2) Typical
Typical Steel
Steel Dust
Dust Concentration
Concentration Trend
Trend inin Lubricant
Lubricant Oil
Oil...................
................... iv
iv(3)(3) Criteria
Criteria (Reference)(Reference)............................................................................
............................................................................vv(4)(4) Iron
Iron Particle
Particle Diameter
Diameter andand Detection
Detection Range
Range Comparison
Comparison among
among
Measuring
Measuring Methods
Methods...........................................................................
........................................................................... vi
vi(5)(5) Comparison
Comparison between
between SDM-Measured
SDM-Measured Values
Values andand ICP-Analyzed
ICP-Analyzed
ValuesValues................................................................................................
................................................................................................vii
vii

1.
1. Introduction
Introduction
Thank
Thank you
you forfor purchasingpurchasing thethe SDM-73
SDM-73 oiloil steelsteel dust
dust checker
checker (“meter”).
(“meter”).
Prior
Prior toto use,use, pleaseplease carefully
carefully read
read this
this manual
manual toto ensureensure correct
correct use.
use. This
This productproduct isis
suitablesuitable forfor preventive
preventive maintenancemaintenance ofof bearings
bearings andand gears
gears ofof rotatingrotating machinery
machinery such
such asasmotors,motors, pumps,
pumps, industrial
industrial robots,robots, vessel
vessel engines,
engines, wind
wind turbines,
turbines, andand elevators.
elevators.

2.
2. Features
Features ofof thisthis ProductProduct
This
This productproduct isis aa portableportable analyzer
analyzer designed
designed toto measure
measure thethe steelsteel dust
dust concentration
concentration ininlubricating
lubricating oil
oil on-site.
on-site. ItIt isis useful
useful when
when checking
checking thethe wearwear condition
condition ofof bearings
bearings andandgears.
gears.
ItIt isis also
also very
very easy
easy toto use.
use. Simply
Simply sample
sample aa small
small amountamount ofof oiloil waste
waste discharged
discharged fromfromthethe machinery
machinery atat thethe timetime ofof oiloil lubrication,
lubrication, andand setset itit inin thethe meter.
meter.
•• Highly
Highly sensitive
sensitiveThe
The metermeter isis able
able toto identify
identify thethe initial
initial bearing
bearing wear
wear because
because itit employs
employs aa magnetic
magneticbalance-typebalance-type electromagnetic
electromagnetic induction
induction method
method as
as itsits measuring
measuring principle.
principle.
•• HighHigh precision
precision
The
The metermeter isis able
able toto findfind anan abnormality
abnormality inin thethe ultra-slow
ultra-slow speed
speed rotation,
rotation, which
which isisdifficultdifficult toto detectdetect byby thethe vibration
vibration analysis
analysis technique.
technique.
•• User-friendly
User-friendly
Just
Just fill
fill aa syringe
syringe with
with thethe oiloil specimen
specimen andand insert
insert itit into
into thethe meter.
meter. Within
Within aa few
few
seconds
seconds thethe metermeter gives
gives youyou aa readout
readout ofof thethe ferromagnetic
ferromagnetic particles
particles inin thethe oiloil asas aa
percentage
percentage ofof thethe total
total weight.
weight.
•• Compact
Compact andand portableportable
There
There isis nono longerlonger any
any needneed toto sendsend your
your sample
sample toto aa laboratorylaboratory forfor analysis,
analysis, making
makingon-siteon-site measurement
measurement possible.
possible.

3.
3. Safety
Safety Precautions
Precautions
Symbols
Symbols Used
Used inin thisthis Manual
ManualThis
This manual
manual uses
uses Warning,
Warning, Caution
Caution andand Note
Note symbols
symbols toto draw
draw attention
attention toto procedures,procedures,materials,
materials, methods,
methods, andand processes,
processes, which
which require
require particularparticular attention.
attention.
WARNINGWARNING

Indicates
Indicates aa potentiallypotentially hazardous
hazardous situation
situation thatthat may
may result
result inin
death
death oror serious
serious injury.
injury.

CAUTIONCAUTION

Indicates
Indicates aa hazardous
hazardous situation
situation thatthat may
may result
result inin minorminor injury
injuryoror property
property damage.
damage.

NOTE
NOTE

ProvidesProvides information
information on
on productproduct handling.
handling.
-- 11 --

Safety
Safety Precautions
Precautions
To
To ensureensure safe
safe operation,
operation, follow
follow thethe precautions
precautions below.
below.
CAUTIONCAUTION•• ThisThis productproduct isis not
not explosion-proof
explosion-proof andand should
should not
not bebe usedused inin explosive
explosive
atmospheres.
atmospheres.
•• Avoid
Avoid any
any strong
strong mechanicalmechanical shock
shock oror impact
impact toto thethe productproduct as
as aa result
result ofofdropping
dropping oror bumping
bumping against
against aa surface.
surface. Failure
Failure to
to do
do so
so maymay impair
impair thetheperformance
performance ofof thethe product.
product.
•• Do
Do notnot leave
leave thethe productproduct inin aa high-temperature/humidity
high-temperature/humidity environment
environment forfor ananextendedextended period
period ofof time.
time. Doing
Doing soso maymay cause
cause device
device failure.
failure.
•• Do
Do notnot expose
expose thethe productproduct toto rapid
rapid temperature/humidity
temperature/humidity changes.
changes. Doing
Doing sosomay
may cause
cause device
device failure.
failure.
•• TheThe productproduct isis not
not drip-proof.
drip-proof. Keep
Keep thethe productproduct away
away fromfrom water.
water. Failure
Failure to
to
do
do so
so maymay cause
cause device
device failure.
failure.
•• IfIf this
this productproduct isis to
to bebe left
left unused
unused forfor anan extended
extended period
period ofof time,time, remove
removethethe batteries
batteries fromfrom thethe unit.
unit. Failure
Failure to
to do
do so
so maymay cause
cause device
device failure.
failure.
•• ThisThis productproduct isis aa precision
precision instrument.
instrument. Do
Do notnot disassemble,
disassemble, modify,
modify, oror alteralter
thethe structure
structure ofof thethe productproduct oror itsits electricalelectrical circuits.
circuits. Doing
Doing soso maymaycompromise
compromise thethe performance
performance ofof thethe product.
product.
•• ThisThis productproduct employs
employs thethe electromagnetic
electromagnetic induction
induction method
method as
as itsits
measuringmeasuring principle,
principle, andand should
should not
not bebe usedused inin thethe vicinity
vicinity ofof devices
devices
emitting
emitting aa strong
strong electromagnetic
electromagnetic wave.
wave. Electromagnetic
Electromagnetic waves
waves may
may cause
cause
aa driftdrift inin thethe reading.
reading.
•• Keep
Keep thethe productproduct away
away fromfrom wirelesswireless devices
devices (e.g.,(e.g., walkie-talkies,
walkie-talkies,
cellphones)
cellphones) while
while inin use.
use.
•• TheThe sampling
sampling port
port isis equipped
equipped with
with anan optical
optical sensor.
sensor. Keep
Keep thethe sampling
sampling
port
port andand optical
optical sensor
sensor clean,
clean, asas correct
correct measurement
measurement isis not
not possible
possible ifif they
they
areare contaminatedcontaminated with
with iron
iron particles,
particles, etc.
etc. IfIf contaminated,
contaminated, wipe
wipe them
them with
with aacottoncotton swab
swab oror cloth.
cloth.
•• IfIf thethe productproduct isis dirty,
dirty, wipe
wipe itit with
with aa soft,
soft, dry
dry cloth.
cloth. Do
Do notnot useuse alcohol,
alcohol,
detergent,
detergent, benzene,
benzene, thinner,thinner, oror aa wet
wet cloth.
cloth.

-- 22 --

4.
4. Package
Package Contents
Contents
AAstandard
standard package
package consists
consists ofof thethe following
following items.
items. IfIf any
any items
items areare missing
missing oror damaged,
damaged,pleaseplease contact
contact New
New Cosmos
Cosmos oror itsits authorized
authorized representative
representative forfor replacement.
replacement.

Item
Item

Model/Part
Model/Part No.
No.

Quantity
Quantity

SDM-73
SDM-73 oiloil steelsteel dust
dust checker
checker

SDM-73
SDM-731122 ml
ml syringe,
syringe, with
with cap
cap

SMC-2
SMC-2

55

Syringe
Syringe nozzle
nozzleSMC-2Z
SMC-2Z

22

Syringe
Syringe holder
holder

CLH-3
CLH-3

11

AA
AAbatterybattery44

Carry
Carry case,case, with
with shoulder
shoulder strap
strap

11

Instruction
Instruction manual
manual (this(this document)
document)

11

Inspection
Inspection certificate
certificate

115.
5. Consumables
Consumables (sold(sold separately)
separately)
Item
Item

Model/Part
Model/Part No.
No.

22 ml
ml syringe
syringe with
with capcap (10(10 pcs)
pcs)

SMC-2-10
SMC-2-10

Syringe
Syringe nozzle
nozzle (5(5 pcs)pcs)

SMC-2Z-5
SMC-2Z-5

Syringe
Syringe holder
holder

CLH-3
CLH-3

-- 33 --

6.
6. Component
Component Names
Names andand Functions
FunctionsFigureFigure 1.
1. Exterior
ExteriorAppearance
Appearance
Item
Item

Component
Component

Function
Function andand Description
Description
Set thethe switch
switch to
to MEAS
MEAS toto enterenter measurement
measurement mode;mode;⋅⋅ Set
set toto MEAS
MEAS before
before inserting
inserting thethe syringe
syringe into
into thethe meter
meter
set
Set thethe switch
switch toto BATT
BATT toto checkcheck thethe battery
battery voltage
voltage⋅⋅ Set
Set thethe switch
switch toto OFF
OFF toto turnturn off
off thethe unit
unit⋅⋅ SetInsert aa syringe
syringe with
with syringe
syringe holder
holder here
here forfor measurement
measurement
InsertTurns red
red whenwhen thethe battery
battery voltage
voltage decreases
decreases and
and
Turns
reaches thethe discharge-cutoff
discharge-cutoff voltage
voltage (3.6
(3.6 V);V); notifies
notifies
reaches
users toto replace
replace thethe batteries;
batteries; starts
starts blinking
blinking when
when thetheusers
battery voltage
voltage decreases
decreases toto 3.2
3.2 VV oror lowerlower
battery
Displays thethe steelsteel dust
dust concentration
concentration value,
value, battery
battery
Displaysvoltage, oror errorerror code
code
voltage,①①

Selector switch
switchSelector②②

Sampling port
port
Sampling③③

Battery alarm
alarm LED
LED
Battery

④
④

LCD
LCD

⑤
⑤

DC jack
jack
DC

⑥
⑥
⑦
⑦
⑧
⑧

Calibration
Calibration date
date label
label IndicatesIndicates thethe calibration
calibration date;
date; dodo notnot remove
remove thethe label
label
Battery compartmentcompartment Houses
Houses four
four AA
AA batteries
batteries
Battery
Syringe
22 ml
Syringeml syringe
syringe toto collectcollect anan oiloil sample
sample⑨⑨Syringe
Syringe nozzle
nozzle⑩⑩Syringe
Syringe holder
holder(For(For use
use inin JapanJapan only.
only.Used
Used toto connect
connect thetheAC
ACadaptor.)
adaptor.)

Used
Used with
with thethe syringe
syringe toto collectcollect anan oiloil sample
sampleNeeds
Needs toto be
be attachedattached to
to aa syringe
syringe before
before thethe syringe
syringe isis
inserted
inserted into
into thethe metermeter-- 44 --

7.
7. Operation
Operation
7-1.
7-1. Battery
Battery Installation
Installation
Open
Open thethe battery
battery lid.
lid. Insert
Insert four
fourAA
AAbatteries
batteries inin thethe correct
correct orientation
orientation (polarity(polarity +/-).
+/-).
Press
Pressdown
downthethebattery
batterylid
lidabove
abovethethebatteries
batteries
andandslide
slideititto
toclose.
close.

FigureFigure 2.
2. Battery
Battery Installation
Installation

7-2.
7-2. Battery
Battery Check
Check
Set
Set thethe selector
selector switch
switch toto BATT.
BATT. ““――――――――”” will
will bebe displayed
displayed onon thethe LCD
LCD forfor aa few
few
seconds,
seconds, andand thenthen itit will
will bebe replaced
replaced byby thethe battery
battery voltage.
voltage.
bb 5.
5. 66

Battery
Battery voltage
voltage isis 5.6
5.6 V.
V.

bb 3.
3. 66

When
When thethe battery
battery voltage
voltage exceeds
exceeds 3.6
3.6 V,
V, thethe unit
unit isis ready
ready forfor
use.
use. When
When thethe voltage
voltage decreases
decreases toto 3.6
3.6 VV oror lower,
lower, thethe battery
batteryalarm
alarm LED
LED will
will turn
turn red,
red, indicating
indicating thatthat thethe batteries
batteries need
need toto be
bereplaced
replaced with
with newnew ones.
ones.
When
When thethe battery
battery voltage
voltage decreases
decreases toto 3.2
3.2 VV oror lower,
lower, thethebattery
battery alarm
alarm LED
LED will
will start
start blinking
blinking andand thethe unit
unit will
will start
start
beeping
beeping indicating
indicating thatthat thethe batteries
batteries need
need toto be
be immediately
immediately
replaced
replaced with
with newnew ones.
ones. IfIf you
you continue
continue toto useuse thethe unit
unit without
without
battery
battery replacement,
replacement, P.
P. OFFOFF (power(power off)off) will
will bebe displayed,displayed, thenthen
thethe unit
unit will
will bebe shut
shut down.
down.

bb 3.
3. 22

CAUTIONCAUTION

NOTE
NOTE•• Accurate
Accurate measurement
measurement isis not
not possible
possible ifif thethe battery
battery alarm
alarm
LED
LED isis litlit oror blinks.
blinks. Replace
Replace thethe batteries
batteries with
with newnew ones.
ones.
•• Replace
Replace all
all thethe fourfour batteries
batteries at
at thethe samesame time.
time.
IfIf thethe battery
battery voltage
voltage decreases
decreases toto 3.6
3.6 VV oror lower
lower while
while thetheselector
selector switch
switch isis inin thethe MEAS
MEAS position,
position, thethe battery
battery alarm
alarm LEDLED
will
will turn
turn red.
red. IfIf thethe battery
battery voltage
voltage decreases
decreases toto 3.2
3.2 VV oror lower
lower
while
while thethe selector
selector switch
switch isis inin thethe MEAS
MEAS position,
position, thethe battery
batteryalarm
alarm LED
LED will
will start
start blinking
blinking andand thethe unit
unit will
will start
start beeping
beeping ininthethe samesame way
way asas whenwhen thethe switch
switch isis inin thethe BATT
BATT position.
position.
-- 55 --

7-3.
7-3. Taking
Taking Measurements
Measurements(1)(1) SetSet thethe selector
selector switch
switch to
to MEAS
MEAS toto enterenter
measurement
measurement mode.
mode.
(2)
(2) Ensure
Ensure thatthat “0"“0" appears
appears onon thethe LCD
LCD withwith nonosyringesyringe installed
installed inin thethe meter.
meter.
(3)(3) Attach
Attach thethe syringe
syringe holder
holder toto thethe syringe
syringe filled
filledwithwith thethe oiloil sample.
sample. Insert
Insert thethe syringe
syringe into
into
thethe sampling
sampling port
port ofof thethe meter.
meter.
For
For thethe oiloil sampling
sampling method,
method, refer
refer toto pagepage 8.
8.
(4)(4) Within
Within aa few
few seconds,
seconds, thethe measurement
measurement isis
completecomplete with
with aa short
short beep.
beep. TheThe reading
reading isis
displayeddisplayed onon thethe LCD.
LCD. Record
Record thethe reading.
reading.
(5)(5) Remove
Remove thethe syringe
syringe andand syringe
syringe holder
holder fromfromthethe sampling
sampling port.
port. TheThe reading
reading will
will return
return to
to
“0”.
“0”.
Note:
Note: Remove
Remove thethe syringe
syringe holder
holder andandsyringesyringe together.
together.
(6)(6) Return
Return thethe selector
selector switch
switch toto OFF
OFF toto endend thethemeasurement.
measurement.

Syringe
Syringe
Syringe
Syringe holder
holderFigureFigure 3.
3. Syringe
Syringe Insertion
Insertion

CAUTIONCAUTION•• After
After blending
blending thethe sampled
sampled oil
oil well,well, draw
draw thethe oiloil sample
sample into
into thethe syringe
syringe right
right
away,
away, andand thenthen taketake thethe measurement
measurement immediately.
immediately. ItIt isis not
not recommended
recommended
toto store
store thethe oiloil sample
sample inin thethe syringe.
syringe. However,
However, ifif you
you needneed toto store
store thethe oiloilsamplesample inin thethe syringe,
syringe, keep
keep thethe syringe
syringe horizontally.
horizontally. Leaving
Leaving thethe syringe
syringeverticallyvertically with
with thethe tip
tip facing
facing downward
downward will
will cause
cause iron
iron particles
particles totoconcentrateconcentrate at
at thethe tip
tip ofof thethe syringe,
syringe, resulting
resulting inin aa drift
drift inin thethe reading
reading oror aa
negative
negative reading.
reading.

Good
Good ○✅
✅
○

Not
Not good
good ○XX○

Less
Lessaffectedaffectedby
byparticle
particledeposition
deposition

Incorrect
Incorrectmeasurement
measurement
becausebecauseiron
ironparticles
particlesare
aredepositeddepositedon
onthetheexciter
excitercoil
coilside
side

Exciter
Exciter coil
coil 11
Detection
Detection
Exciter
Exciter coil
coil 22
FigureFigure 4.
4. Effect
Effect ofof Particle
Particle Deposition
Deposition-- 66 --

CAUTIONCAUTION•• Accurate
Accurate measurement
measurement isis not
not possible
possible ifif an
an empty
empty sample
sample syringe
syringe ororsyringesyringe holder
holder isis inserted.
inserted.
•• Insert/remove
Insert/remove thethe syringe
syringe holder
holder andand syringe
syringe together
together in/fromin/from thethe meter.
meter.
•• Avoid
Avoid causing
causing any
any impact
impact andand carefully
carefully insert
insert thethe syringe
syringe into
into thethe sampling
sampling
port.
port. Failure
Failure to
to do
do so
so maymay cause
cause thethe reading
reading toto drift.
drift. Inserting
Inserting thethe syringe
syringetoo
too slowly
slowly may
may also
also cause
cause thethe reading
reading toto drift.
drift. IfIf aa drift
drift occurs,
occurs, remove
remove thethesyringesyringe andand syringe
syringe holder
holder fromfrom thethe meter,meter, andand thenthen reinsert
reinsert them.
them.
•• Once
Once you
you insert
insert thethe syringe
syringe inin thethe sampling
sampling port,
port, dodo notnot move
move itit until
until thethe unit
unit
gives
gives aa short
short beep
beep indicating
indicating measurement
measurement completion.
completion. Impact
Impact during
duringmeasurement
measurement may
may cause
cause aa drift
drift inin thethe reading.
reading.
•• Larger
Larger particles
particles tend
tend toto deposit
deposit faster.
faster. As
As aa result,result, thethe reading
reading varies
varies as
as they
they
deposit.
deposit. Complete
Complete measurements
measurements quickly
quickly toto mitigate
mitigate thethe effecteffect ofofdeposition.
deposition. Placing
Placing thethe metermeter horizontally
horizontally while
while inin measurement
measurement can
can also
also
mitigate
mitigate thethe effecteffect ofof thethe deposition
deposition ofof particles.
particles.
•• TheThe reading
reading isis normallynormally stablestable during
during normal
normal wear
wear period.
period. However,
However, as
as thethewear
wear progresses,
progresses, flaked
flaked abrasionabrasion powders
powders areare generated.
generated. These
These have
have aalarge
large diameter.
diameter. The
The reading
reading may
may varyvary asas aa result.
result.
•• Repeat
Repeat thethe cycle
cycle ofof insertion
insertion andand measurement
measurement three
three oror fourfour times
times (for(for thethesame
same oiloil sample
sample inin thethe samesame syringe)
syringe) toto obtain
obtain an
an average
average oror majority
majority
value.
value. The
The reading
reading may
may drift
drift oror becomebecome negative
negative when
when thethe syringe
syringe isis
inserted
inserted forfor thethe first
first time
time duedue toto thethe difference
difference inin temperaturetemperature between
between thethesyringesyringe andand thethe built-in
built-in sensor.
sensor. IfIf thethe first
first reading
reading (1st
(1st measurement
measurement value)
value)
isis significantly
significantly different
different fromfrom other
other measurement
measurement values,
values, itit should
should not
not be
be
used.
used.

-- 77 --

7-4.
7-4. Oil
Oil Sampling
Sampling
ItIt isis necessary
necessary to
to taketake anan oiloil sample
sample expelledexpelled fromfrom thethe rotatingrotating machinery
machinery atat thethe timetime ofofoil
oil lubrication,
lubrication, etc.,
etc., andand toto fillfill thethe syringe
syringe with
with itit inin thethe following
following manner.
manner.
(1)(1) Sample
Sample 10–30
10–30 ml
ml oiloil expelledexpelled fromfrom thethe rotatingrotating machinery
machinery andand put
put itit inin aa sample
samplebottle.
bottle.
Note:
Note: Iron
Iron particles
particles inin oiloil areare likely
likely toto settle
settle down
down at
at thethe bottom.
bottom. Take
Take anan oiloil sample
samplefromfrom thethe bottom
bottom toto pourpour itit into
into aa sample
sample bottle.
bottle.
(2)(2) Shake
Shake thethe bottle
bottle toto blend
blend thethe sampled
sampled oil
oil well.
well. When
When thethe sampled
sampled oil
oil hashas aa highhighviscosity,
viscosity, stir
stir itit well
well with
with aa stirrer,
stirrer, etc.
etc.
(3)(3) After
After blending
blending well,well, immediately
immediately collectcollect 1.5
1.5 mlml ofof oiloil sample
sample byby using
using aa syringe
syringewithwith aa syringe
syringe nozzle
nozzle attached.
attached. Ensure
Ensure thatthat thethe syringe
syringe isis filled
filled with
with aa slightly
slightly
excessive
excessive amount.
amount. Push
Push thethe piston
piston upward
upward toto remove
remove air
air bubbles,
bubbles, then
then obtainobtain anan
exact
exact volume
volume ofof 1.5
1.5 ml.
ml.
(4)(4) Remove
Remove thethe syringe
syringe nozzle
nozzle fromfrom thethe syringe
syringe andand wipe
wipe thethe tip
tip ofof thethe syringe
syringe with
with aa
cloth,
cloth, etc.
etc.Attach
Attach thethe cap
cap andand syringe
syringe holder
holder toto thethe syringe.
syringe.
(5)(5) Start
Start thethe measurement
measurement right
right away.
away.

Cap
Cap
Syringe
Syringe
Syringe
Syringe nozzle
nozzleSampleSample bottle
bottle(4)(4)Attach
Attach thethe cap
cap toto thethe syringe
syringe

Syringe
Syringe holder
holderSampledSampled oiloil(4)(4)Attach
Attach thethe syringe
syringe holder
holder toto thethe syringe
syringe(3)(3) Draw
Draw oiloil sample
sample with
with aa syringe
syringe
FigureFigure 5.
5. OilOil Sampling
Sampling-- 88 --

NOTE
NOTE

Syringes
Syringes areare consumables.
consumables.Take
Take thethe following
following precautions.
precautions.
•• The
The graduation
graduation lines
lines onon aa syringe
syringe may
may vanish
vanish when
when wiped
wiped
with
with oil,oil, depending
depending onon thethe type
type ofof oil.
oil. Prevent
Prevent oil
oil fromfrom making
makingcontact
contact with
with thethe graduation
graduation lines
lines asas muchmuch asas possible.
possible.
•• When
When thethe measurement
measurement isis finished,finished, empty
empty thethe syringe
syringe by
byreleasingreleasing thethe oiloil sample
sample backback into
into thethe sample
sample bottle.
bottle. Leaving
Leavingthethe syringe
syringe filled
filled with
with oiloil forfor anan extended
extended period
period ofof timetime maymay
deformdeform thethe syringe
syringe depending
depending onon thethe oiloil type.
type. AA deformed
deformedsyringesyringe may
may not
not bebe properly
properly housedhoused inin thethe syringe
syringe holder.
holder.
•• When
When keeping
keeping thethe oiloil sample
sample inin aa syringe
syringe forfor aa while,
while, ensure
ensurethethe cap
cap faces
faces upward.
upward. AA drift
drift inin thethe reading
reading oror negative
negative
readingreading may
may bebe caused,caused, ifif iron
iron particles
particles areare deposited
deposited at
at ororadhereadhere toto thethe tip
tip ofof thethe syringe.
syringe.
•• AA syringe
syringe cancan bebe usedused 55 to
to 10
10 times
times (as(as aa reference).
reference). WhenWhen
thethe graduation
graduation lines
lines fade
fade away
away andand areare illegible,
illegible, replace
replace itit
withwith aa newnew one.
one.

-- 99 --

8.
8. Error
Error Codes
Codes
In
In casecase ofof anan error,error, thethe corresponding
corresponding error
error code
code isis displayed
displayed onon thethe LCD.
LCD. Take
Take thethenecessarynecessary action
action according
according toto thethe displayed
displayed error
error code,
code, asas wellwell asas measures
measures suggested
suggestedinin thethe next
next section,section, “Troubleshooting”.
“Troubleshooting”.
Table
Table 1.
1. Error
Error Code
Code Table
Table
Error
Error codecode
onon screen
screen

―
――
――
――
―

(Blinking)(Blinking)

Cause
Cause

ActionActionCannotCannot start
start zero
zero adjustment
adjustment
becausebecause thethe unit
unit was
was turned
turned onon whilewhile
thethe oiloil sample
sample (syringe(syringe andand syringe
syringeholder)holder) was
was inserted
inserted
Measurement
Measurement error
error
Oil
Oil sample
sample (syringe(syringe andand syringe
syringeholder)holder) was
was removed
removed fromfrom thethe unit
unit
beforebefore thethe completion
completion ofofmeasurement
measurement

RemoveRemove thethe syringe
syringe andandsyringesyringe holder
holder fromfrom thethe unit
unit
and
and wait
wait until
until “0”“0” isis displayed
displayed
beforebefore using
using again
again

P.
P. OFFOFF

Unit
Unit was
was forcedly
forcedly turned
turned off
off because
becausethethe battery
battery voltage
voltage isis too
too lowlow

Err.
Err. EE

DeviceDevice error
error
Non-volatile
Non-volatile memory
memory write
write error
error

Err.
Err. rr

DeviceDevice error
error
Non-volatile
Non-volatile memory
memory read
read error
error

Err.
Err. SS

DeviceDevice error
error
Non-volatile
Non-volatile memory
memory check
check sumsum error
error

Err.
Err. AA

DeviceDevice error
errorNoNo response
response fromfrom thethe ADAD converter
converter

Err.
Err. FF

DeviceDevice error
error
AbnormalAbnormal sensor
sensor output
output

-- 10
10 --

RemoveRemove thethe syringe
syringe andandsyringesyringe holder
holder fromfrom thethe unit,
unit,
reinsert
reinsert them,
them, then
then measure
measure
again
again
Set
Set thethe selector
selector switch
switch toto OFF,OFF,
andand thenthen set
set itit toto BATT
BATT or
or
MEAS
MEAS

Set
Set thethe selector
selector switch
switch toto OFF,OFF,
andand thenthen set
set itit toto BATT
BATT oror
MEAS.
MEAS. IfIf thethe error
error code
code isis still
still
displayed,displayed, repair
repair isis necessary
necessary9.
9. Troubleshooting
Troubleshooting
BeforeBefore contacting
contacting us
us forfor service
service repairs,
repairs, pleaseplease performperform basic
basic troubleshooting
troubleshooting using
using thethetable
table below.
below.
Table
Table 2.
2. Troubleshooting
Troubleshooting
Symptom
Symptom

Cause
Cause

Setting
Setting thethe selector
selector switch
switch ・・BatteryBattery depleted
depletedtoto BATT
BATT oror MEAS
MEAS does
does notnot
turn
turn onon thethe LCD
LCD
・・Incorrect
Incorrect battery
batteryorientation
orientation

ActionAction・・Replace
Replace thethe batteries
batteries
withwith newnew ones
ones (page(page 5)5)・・Remove
Remove andand reinsert
reinsert
batteries
batteries inin thethe correct
correctorientation
orientation (page(page 5)
5)Battery
Battery alarm
alarm LED
LED isis litlit oror・・BatteryBattery isis low
low oror depleted
depleted ・・Replace
Replace thethe batteries
batteries
blinking
blinking
withwith newnew ones
ones (page(page 5)
5)Battery・・Battery alarm
alarm LED
LED isis litlit oror・Incorrect
Incorrect battery
battery・Remove
Remove andand reinsert
reinsert
blinkingorientation
batteries
blinking even
even after
after newneworientation
batteries inin thethe correct
correctbatteries
orientation
batteries areare installed
installedorientation (page(page 5)
5)
Reading
Reading isis unstable
unstable even
even
・
・
・Oil
Oil sample
sample isis too
too hot
hot toto・Allow
Allow thethe sample
sample toto coolcool
after
after thethe oiloil sample
samplemeasuredown
measuredown before
before measuring
measuring(syringe)(syringe) has
has been
been inserted
inserted ・・・Iron
Iron particles
particles inin thethe oiloil・The
The reading
reading isis affectedaffectedinin thethe metermeter
samplebysample deposit
deposit oror adhere
adhereby deposition
deposition ofof particles.
particles.
toFillto thethe tip
tip ofof thethe syringe
syringe
Fill thethe syringe
syringe with
with well
well
Repeatedly
Repeatedly measured
measured
blendedblended oil
oil sample,
sample, andandvaluesvalues (of(of thethe samesame
thenthen measure
measure right
right away
away
sample)sample) vary
vary oror becomebecome・・IfIf particles
particles adhere
adhere toto thethenegative
negativetip
tip ofof thethe syringe,
syringe, wash
wash totoclean
clean thethe syringe,
syringe, cap
capandand syringe
syringe holder
holder oror
replacereplace them
them with
with new
new
ones
ones
““―
――
――
――
―““ blinks
blinks onon thethe・・Unit
Unit was
was turned
turned onon while
while ・
・Remove
Remove thethe syringe
syringe and
and
LCD
LCD
oil
oil sample
sample (syringe(syringe andandsyringesyringe holder
holder fromfrom thetheunit
unit andand wait
wait until
until “0”“0” isis
syringesyringe holder)holder) waswas
displayeddisplayed before
before using
using
inserted
inserted
again
again
・
・OpticalOptical sensor
sensor at
at thethe“0”“0” isis not
not displayed
displayed or
or
・
・Wipe
Wipe thethe optical
optical sensor
sensor―――――――““ blinks
blinks onon thethesampling
sampling port
port isis dirty
dirty
““―
with
with aa cotton
cotton swab
swab oror
LCD
LCD eveneven after
after oiloil sample
sample ・・Only
Only thethe syringe
syringe was
was
cloth
cloth toto remove
remove dirt
dirt(syringe(syringe andand syringe
syringeremovedremoved fromfrom thethe・・Remove/insert
Remove/insert thetheholder)holder) isis removed
removedsampling
sampling port
port thenthensyringesyringe andand syringe
syringereinserted
reinserted while
while thetheholderholder at
at thethe samesame time.
time.
Reading does
does notnot changechangeReadingsyringesyringe holder
holder remained
remainedeven when
when oiloil sample
sampleeven
inserted
inserted(syringe andand syringe
syringe(syringe
holder) isis inserted
inserted
holder)(Continued on
on next
next page)
page)(Continued
-- 11
11 --

(Continued)(Continued)
Symptom
Symptom
Reading
Reading does
does notnot become
become“0”“0” eveneven when
when there
there isis nono
oiloil sample
sample inin thethe syringe
syringe
Error
Error code
code isis displayed
displayed

Cause
Cause

ActionAction・・Reading
Reading has
has beenbeen・・InsertInsert aa syringe
syringe filled
filled with
withcalibrated
calibrated to
to “0”“0” byby using
using
fresh
fresh oil,oil, then
then check
check that
that
fresh
fresh oil.
oil. ItIt isis not
not possible
possiblethethe reading
reading becomes
becomes “0”“0”toto checkcheck “0”“0” byby using
using airair
Refer
Refer toto thethe Error
Error Code
CodeTable
Table onon pagepage 101010.
10. Warranty
Warranty
The
The warranty
warranty period
period isis oneone (1)(1) yearyear fromfrom thethe date
date ofof purchase.
purchase.
You
You areare entitledentitled toto limited
limited warranty
warranty ifif thethe productproduct malfunctions
malfunctions due
due toto aa manufacturing
manufacturing
defectdefect during
during normal
normal use,
use, inin accordance
accordance with
with thethe instruction
instruction manual,
manual, specifications
specifications andandlabels.
labels.
Warranty
Warranty Scope
Scope
IfIf thethe productproduct fails
fails oror isis found
found toto be
be damaged
damaged due
due toto aa manufacturing
manufacturing defectdefect during
during thethewarranty
warranty period,
period, andand used
used inin accordance
accordance with
with thethe instruction
instruction manual
manual andand specifications,specifications,we
we will
will provide
provide aa free
free replacement
replacement andand repair
repair services.
services. This
This warranty
warranty covers
covers thethe NewNew
CosmosCosmos product/parts
product/parts only
only andand not
not third-party
third-party product/parts.
product/parts.
Warranty
Warranty Exclusions
Exclusions
The
The following
following will
will bebe repaired
repaired at
at thethe cost
cost ofof customer
customer even
even during
during thethe warranty
warranty period:
period:(1)(1) Failures
Failures andand damages
damages incurred
incurred byby incorrect
incorrect use,
use, deliberatedeliberate acts
acts oror negligence
negligence ononthethe part
part ofof thethe useruser(2)(2) Failures
Failures andand damages
damages caused
caused by
by disasters
disasters such
such asas earthquakes,
earthquakes, storms
storms andand floods,
floods,lightning,lightning, extreme
extreme climate,climate, abnormal
abnormal power
power supply
supply voltages,
voltages, excessive
excessive
electromagnetic
electromagnetic interferences,interferences, oror otherother acts
acts ofof GodGod(3)(3) Failures
Failures andand damages
damages resulting
resulting fromfrom repair
repair and/or
and/or modification
modification by
by non-New
non-New
CosmosCosmos certified
certified technicians
technicians(4)(4) Consumables
Consumables andand failures
failures andand damages
damages resulting
resulting fromfrom improper
improper consumableconsumablereplacement
replacement(5)(5) Other
Other failures
failures andand damages
damages not
not attributable
attributable toto thethe manufacturer
manufacturer

11.
11. Maintenance
MaintenanceIn
In orderorder toto ensureensure thethe accurate
accurate operation
operation ofof thisthis product,
product, itit isis vital
vital toto performperform periodic
periodicmaintenancemaintenance andand inspection.
inspection. ItIt isis highly
highly recommended
recommended thatthat aa maintenancemaintenance contract
contract with
withaa New
New Cosmos
Cosmos local
local representative
representative be
be mademade forfor annual
annual maintenancemaintenance andand inspections.
inspections.
-- 12
12 --

12.
12. Specifications
Specifications
Model
Model

SDM-73
SDM-73

Measuring
Measuring principle
principle
TargetTargetMeasurement
Measurement range
range
Concentration
Concentration display
display
Resolution
Resolution

Magnetic
Magnetic balance-typebalance-type electromagnetic
electromagnetic induction
induction method
methodSteel
Steel dust
dust concentration
concentration inin oiloil
00 toto 19999
19999 ppm
ppm
*Weight*Weight ratio
ratio
4.5
4.5 digit
digit LCD
LCD
11 ppmppm
Note
Note “0”“0” ppm
ppm displayed
displayed forfor less
less than
than 55 ppm
ppm±± (10(10 %reading%reading ++ 10
10 digits)
digits)ComparedCompared with
with thethe value
value measured
measured by
by ICP
ICP analysis
analysis ononthethe company
company standard
standard oil
oil sample
sampleAutomatic
Automatic adjustment
adjustment
1.5
1.5 mlml
AA
AAbatteries
batteries xx 44 pcs
pcs
Approx.
Approx. 30
30 hours
hours
00 to
to 40
40 ºC
ºC
Approx.
Approx. W84
W84 ×× H190
H190 ×× D40
D40 mmmm
Approx.
Approx. 500
500 gg (including(including batteries)
batteries)
EMC
EMC directive
directive (( 2014/30/EU/SI
2014/30/EU/SI 20162016 No.1091
No.1091 )) andand
RoHS
RoHS directive
directive (( 2011/65/EU+(EU)2015/863/SI
2011/65/EU+(EU)2015/863/SI 20122012
No.3032
No.3032 ))Accuracy
Accuracy

Zero
Zero adjustment
adjustment
SampleSample volume
volumePower
Power supply
supplyContinuous
Continuous operating
operating time
time
OperatingOperating temperaturetemperature
Dimensions
Dimensions
Mass
Mass
Compliance
Compliance・・AboveAbove specifications
specifications may
may bebe subject
subject toto changechangewithout
without notice
notice forfor productproduct improvement.
improvement.

-- 13
13 --

Appendix:
Appendix: Measuring
Measuring Principle
Principle
A1.
A1. Magnetic
Magnetic Balance-Type
Balance-Type Electromagnetic
Electromagnetic Induction
Induction Method
MethodThis
This productproduct employs
employs aa magnetic
magnetic balance-typebalance-type electromagnetic
electromagnetic induction
induction method,
method, as
asillustrated
illustrated inin thethe Figure
FigureA1
A1 below,
below, asas itsits measuring
measuring principle.
principle.
This
This isis aa magnetic
magnetic circuit
circuit sensor
sensor formed
formed byby placing
placing aa detection
detection coil
coil between
between two
two exciter
excitercoils,
coils, soso thatthat magnetic
magnetic fields
fields generated
generated byby thethe exciter
exciter coils
coils areare canceled
canceled byby eacheach other,other,
resultingresulting inin nono magnetic
magnetic field
field aroundaround thethe detection
detection coil.
coil.
The
The detection
detection coil
coil does
does notnot normallynormally generate
generate anan induction
induction voltage.
voltage. However,
However, when
when ananoiloil sample
sample containing
containing iron
iron particles
particles isis inserted
inserted into
into one
one ofof thethe exciter
exciter coils,
coils, thethemagnetic
magnetic permeability
permeability will
will change,change, causing
causing aa magnetic
magnetic imbalance,
imbalance, which
which will
will then
then cause
cause
the
the detection
detection coil
coil toto generate
generate anan induction
induction voltage.
voltage. The
The ironiron particle
particle concentration
concentration inin thetheoiloil cancan bebe measured
measured byby measuring
measuring thethe induction
induction voltage.
voltage.

SampledSampled oil
oil

Oscillation
Oscillation
circuitcircuitFigureFigureA1.
A1. Magnetic
Magnetic Balance-Type
Balance-Type Electromagnetic
Electromagnetic Induction
Induction Method
Method-- ii --

A2.
A2. Measurable
Measurable Metals
MetalsTable
TableA1.
A1. Measureable
Measureable andand Non-Measurable
Non-Measurable Metals
Metals
Metal
Metal

Magnetic
Magnetic property
property

Iron,
Iron, nickel,
nickel, cobalt
cobaltFerromagnetic
Ferromagnetic

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

Paramagnetic
Paramagnetic

Measurable
Measurable✔
✔

Remarks
RemarksХХ

Copper,Copper, silver,
silver, lead,
lead, zinc,
zinc, tin
tin

Diamagnetic
Diamagnetic

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

Paramagnetic
Paramagnetic

IronO33),), iron
iron dust
dust
Iron oxide
oxide (α-Fe(α-Fe22O(hydroxide(hydroxide iron)
iron)

Paramagnetic
Paramagnetic

Iron
O33,, Fe
Fe33O
O44))
Iron oxide
oxide (γ-Fe(γ-Fe22O

Ferromagnetic
Ferromagnetic

ХХ
ХХ
ХХ
✔
✔

*1
*1
*2
*2

*1.
*1. These
These areare raw
raw materials
materials used
used toto makemake oiloil thickeners.
thickeners. This
This productproduct has
has nonosensitivity
sensitivity toto them;
them; therefore,
therefore, they
they have
have nono effecteffect on
on thethe reading
reading ofof thetheproduct.
product.
*2.
*2. There
There areare several
several isomers
isomers ofof ironiron oxide.
oxide. Some
Some ofof themthem cancan bebe measured
measuredusing
using this
this productproduct while
while others
others cannot,
cannot, as
as shown
shown inin thethe tabletable above.
above. IfIf thethespecimen
specimen contains
contains red
red rust
rust oror ifif itit isis measured
measured in
in an
an environment
environment where
where steel
steel
dust
dust may
may easily
easily oxidize,oxidize, thethe reading
reading may
may bebe especially
especially lower
lower than
than thethe actual
actualconcentration
concentration value.
value.

-- iiii --A3.
A3. Usage
Usage(1)(1) Major
MajorApplications
Applications•• Trend
Trend management
management andand simplified
simplified diagnosis
diagnosis ofof wearwear status
status ofof oil-lubricatedoil-lubricatedbearings
bearings andand gears
gears
This
This productproduct can
can bebe usedused toto checkcheck thethe lubrication
lubrication ofof low
low toto highhigh speed
speed rotatingrotating
machinery.
machinery. ItIt isis especially
especially suitable
suitable when
when used
used asas aa simplified
simplified diagnosis
diagnosis ofof wearwear
statusstatus ofof low
low speed
speed rotaryrotary bears
bears andand gears,
gears, which
which isis otherwise
otherwise difficult
difficult toto diagnose
diagnosewithwith thethe vibration
vibration analysis
analysis technique.
technique. ItIt isis possible
possible toto improve
improve thethe diagnosis
diagnosis
accuracy
accuracy ofof middle
middle andand highhigh speed
speed rotatingrotating machinery
machinery byby using
using this
this productproduct along
along
with
with aa vibration
vibration meter.
meter.
•• Preliminary
Preliminary diagnosis
diagnosis forfor SpectrometricSpectrometric Oil
Oil Analysis
Analysis Program
Program (SOAP),(SOAP), ferrography,
ferrography,
etc.
etc.
This
This product’s
product’s usage
usage leads
leads toto maintenancemaintenance cost
cost reduction.
reduction.

FigureFigureA2.
A2. Typical
TypicalApplications
Applications-- iiiiii --(2)(2) Typical
Typical Steel
Steel Dust
Dust Concentration
Concentration Trend
Trend inin Lubricant
Lubricant Oil
Oil
FigureFigureA3
A3 shows
shows thethe 5-year
5-year data
data ofof changes
changes inin steelsteel dust
dust concentrations
concentrations ininlubricating
lubricating oils
oils ofof thethe large-sizedlarge-sized force-feed
force-feed lubrication
lubrication speed
speed reducers
reducers (Machines(MachinesAA
toto N)N) installed
installed inin aa chemicalchemical factory.
factory.As
As forfor thethe speed
speed reducers
reducers where
where thetheconcentration
concentration greater
greater than
than 30
30 ppmppm waswas observed,
observed, wears
wears (e.g.,(e.g., pitting)pitting) were
were found
foundonon thethe geargear tooth
tooth surface.
surface.
ActionAction taken
taken (extreme(extremepressure agent
agent waswas added)
added)
pressure

MachineMachineAA
MachineMachineBB
MachineMachineCC
MachineMachineDD
MachineMachineEE
MachineMachineFF

Pitting
Pittingoccurredoccurred

MachineMachineG
G
MachineMachineHH
MachineMachineII
MachineMachineJJ
MachineMachineKK
MachineMachineLL
MachineMachineM
M
MachineMachineNN

FigureFigureA3.
A3. 5-year
5-year Steel
Steel Dust
Dust Concentration
Concentration Trend
Trend inin Lubricant
Lubricant Oil
Oilfrom
from Large-sized
Large-sized Speed
Speed Reducers
Reducers-- iviv --(3)(3) Criteria
Criteria (Reference)(Reference)
The
The criteria
criteria forfor steelsteel dust
dust concentration
concentration inin thethe oiloil sample
sample areare givengiven inin Table
Table A2.
A2.
They
They areare setset toto be
be relatively
relatively strict
strict so
so as
as to
to detectdetect abnormalities,
abnormalities, ifif any,
any, at
at an
an early
early
stage
stage throughthrough trend
trend monitoring
monitoring toto ensureensure thatthat you
you taketake appropriate
appropriate andand timely
timelycorrective
corrective steps
steps thatthat ensure
ensure long
long life
life forfor your
your machinery.
machinery.
The
The machinery
machinery type
type andand condition
condition ofof useuse varyvary greatly.
greatly. Hence,
Hence, these
these criteria
criteria areare not
notsuitablesuitable forfor all
all types
types ofof machinery.
machinery. ItIt isis recommended
recommended thatthat youyou establish
establish suitable
suitable
operatingoperating criteria
criteria throughthrough thethe data
data accumulation
accumulation andand trend
trend monitoring
monitoring ofof thethe steel
steel
dust
dust concentration
concentration tendencies
tendencies ofof your
your machinery.
machinery.
Table
TableA2.
A2. Typical
Typical Criteria
Criteria ofof Steel
Steel Dust
Dust Concentration
Concentration inin OilOil
Criteria
Criteria
Large-sized
Small-sized
Large-sized
Small-sizedmachinery*machinery*machinery*machinery*

Judgement
Judgement

ActionActionContinue toto monitor
monitor thethe steelsteelContinue
dust concentration
concentration at
at aa normal
normaldust
frequency
frequency
Fill thethe machinery
machinery with
with fresh
fresh oiloil
Fillimmediately andand thenthen measure
measureimmediately
the concentration
concentration again
again after
after oneone
the
100–300
100–300
Of Caution
CautionOf
30–100 ppm
ppm
30–100month; taketake necessary
necessary corrective
corrective
month;
ppm
ppm
action (e.g.,(e.g., improvement
improvement ofof
actionlubrication)
lubrication)
Perform aa thoroughthorough examination;
examination;
Perform
identify thethe cause
cause ofof abnormality
abnormality
identify
Greater than
than Greater
Greater than
thanGreater
AbnormalAbnormaland taketake necessary
necessary corrective
corrective
and100 ppm
ppm
300 ppm
ppm
100
300
actionactionMachinery isis classifiedclassified into
into large-sizedlarge-sized oror small-sized
small-sized based
based onon whether
whether** Machinerywith oror without
without filtering.
filtering.
itit isis withrough distinction
distinction between
between large-sizedlarge-sized andand small-sized
small-sized machinery
machinery isis** AA roughthe motor
motor size.
size. Large-sized
Large-sized machinery
machinery has
has motors
motors of
of 20
20 kW
kW or
or greater,
greater,thewhile small-sized
small-sized machinery
machinery has
has motors
motors ofof lessless than
than 20
20 kW.
kW.
while
For small-sized
small-sized machinery,machinery, usuallyusually oiloil bathbath lubrication
lubrication isis used
used andand thethe oiloil** Forhardly filtered.
filtered. Therefore,
Therefore, thethe concentration
concentration criteria
criteria forfor small-sized
small-sizedisis hardly
machinery areare three
three times
times more
more inin numbernumber than
than those
those forfor large-sizedlarge-sizedmachinerymachinery.
machinery.
Less thanthanLess
30 ppmppm
30

Less thanthanLess
100 ppm
ppm
100

NormalNormal-- vv --

(4)(4) Iron
Iron Particle
Particle Diameter
Diameter andand Detection
Detection Range
Range Comparison
Comparison among
among Measuring
Measuring
Methods
Methods
ItIt isis very
very useful
useful toto checkcheck thethe condition
condition ofof wearwear particles
particles inin lubricating
lubricating oil/grease
oil/grease as
as aa
methodmethod toto diagnose
diagnose andand forecast
forecast thethe damage
damage oror wearwear progression
progression ofof thethe gears
gears andandbearings.
bearings.
SOAP
SOAP (e.g.,(e.g., ICP
ICP analysis)
analysis) andand ferrography
ferrography areare commonlycommonly used
used forfor measuring
measuring the
the
steel
steel dust
dust concentration
concentration inin oil/grease.
oil/grease.
FigureFigure A4
A4 provides
provides aa conceptual
conceptual diagram
diagram ofof thethe detection
detection range
range ofof fourfour methods
methods(ICP,(ICP, analyticalanalytical ferrography,
ferrography, quantitative
quantitative ferrography
ferrography andand SDM-72/73)
SDM-72/73) andand thetherelationshiprelationship between
between particle
particle diameter
diameter andand detected
detected value.
value.

FigureA4.
A4. Iron
Iron Particle
Particle Diameter/Detection
Diameter/Detection Range
Range Comparison
Comparison
FigureGenerally, SOAP
SOAP (e.g.,(e.g., ICP
ICP analysis)
analysis) isis considered
considered unsuitableunsuitable forfor detecting
detecting large
large
Generally,
particles (5
(5 μm
μm or
or larger
larger inin diameter).
diameter). On
On thethe otherother hand,
hand, thethe SDM-72/73
SDM-72/73 meter
meter has
has
particles
high sensitivity
sensitivity forfor large
large particles,
particles, which
which directly
directly lead
lead toto fatalfatal damage.
damage. The
The useuse ofofhigh
the SDM-72/73
SDM-72/73 meter
meter does
does notnot require
require any
any special
special knowledge.
knowledge. The
The SDM-72/73
SDM-72/73
themeter enables
enables thethe useruser toto easily
easily andand quickly
quickly detect
detect abnormal
abnormal wear
wear condition
condition at
at an
an
meter
early stagestage andand onon site.
site.
early

*SOAP:*SOAP:SpectrometricSpectrometricOil
OilAnalysis
AnalysisProgram
Program*ICP:*ICP:Inductively
InductivelyCoupled
CoupledPlasma
Plasma-- vivi --(5)(5) Comparison
Comparison between
between SDM-Measured
SDM-Measured Values
Values andand ICP-Analyzed
ICP-Analyzed Values
ValuesThe
The wearwear particles
particles inin oil/grease
oil/grease sampled
sampled fromfrom actual
actual machinery
machinery areare aa mixture
mixture ofofvariousvarious ingredients
ingredients ofof different
different shapes.
shapes. The
The quantity
quantity andand properties
properties ofof wearwear
particles
particles inin an
an oil/grease
oil/grease sample
sample differ
differ depending
depending onon thethe sampling
sampling location
location andandoperatingoperating conditions,conditions, which
which causes
causes thethe reading
reading to
to vary
vary inin thethe end.
end.

Steel
Steel dust
dust concentration
concentration inin ppmppm

On
On placing
placing thethe ICP-analysis
ICP-analysis values
values fromfrom smallest
smallest toto largest
largest andand thenthen comparing
comparingthem
them with
with thethe SDM-measured
SDM-measured values
values (as(as shownshown inin Figures
Figures A5A5 andand A6),
A6), thetheSDM-measured
SDM-measured values
values areare wellwell correlated
correlated with
with those
those ofof thethe ICP-analysis.
ICP-analysis. Therefore,
Therefore,
we
we believe
believe thatthat thethe SDM-72/73
SDM-72/73 meter
meter isis capable
capable enoughenough to
to be
be usedused asas aa portableportableanalyzer
analyzer forfor providing
providing aa simplified
simplified preliminary
preliminary diagnosis
diagnosis on
on site.
site.

SampleSample Nos.
Nos. 11 to
to 16
16
FigureFigureA5.
A5. Concentration
Concentration Comparison
Comparison between
between SDM-73
SDM-73 andand ICPICP*1.
*1.Large-peeled
Large-peeledwear
wearparticles
particlesare
aremixed
mixedininSample
SampleNos.
Nos.1515andand16:
16:
In
In thethe ICPICPanalysis
analysis ofof aa sample
samplecontaining
containing large-peeledlarge-peeled wear
wear particles,
particles, aa large
large error
error isis likely
likely totooccur.
occur. This
This often
often results
results inin aa lower
lower reading.
reading. This
This phenomenon
phenomenon isis caused
caused as
as aa result
result ofof thetheincomplete
incomplete luminescentluminescentreaction
reaction ofof metal
metal particles.
particles. On
On thethe otherother hand,
hand, thethe SDM-73
SDM-73 meter
meter isis
capablecapable ofof measuring
measuring aa sample
sample containing
containing such
such large
large particles
particles because
because itit isis designed
designed totodetectdetect thethe changechange inin permeability.
permeability. ItIt isis also
also reported
reported thatthat permeability
permeability changechange isis affectedaffected by
by
wear
wear particles’
particles’size
size andand shape,
shape, forfor example,
example, ifif needle-shaped
needle-shaped wear
wear particles
particles oror flattened
flattened wear
wear
particles
particles areare longitudinallylongitudinally lined
lined up,
up, thethe metermeter gives
gives aa higher
higher reading.
reading. Normally
Normally thethe particles
particlesareare inin aa random
random orientation,orientation, andand somesome particles
particles line
line up
up longitudinallylongitudinally toto somesome extent,
extent, which
which
causescauses thethe SDM-measured
SDM-measured value
value toto be
be higher
higher than
than thethe ICP-analyzed
ICP-analyzed one.
one. This
This phenomenon,
phenomenon,
however,
however, isis onon thethe safe
safe side
side fromfrom thethe viewpoint
viewpoint ofof detecting
detecting anan abnormality
abnormality at
at an
an early
early stage.
stage.
Therefore,
Therefore,weweconclude
concludethat
thatthetheuseuseof
ofSDM-73
SDM-73meter
meterisispractical.
practical.

-- viivii --

Steel dust
dust concentration
concentration in
in %
%
Steel

Sample Nos.
Nos. 11 toto 10
10
SampleFigureFigureA6.
A6. Concentration
Concentration Comparison
Comparison between
between SDM-72
SDM-72 andand ICPICP*2.
*2.RedRedrustrustisisformed
formedininSample
SampleNo.
No.10:
10:
IfIf water
water entersenters thethe lubricating
lubricating oil/grease
oil/grease andand causes
causes formation
formation ofof redred rust
rust (iron(iron oxides),oxides), ititmeans
means thatthat thethe polluted
polluted (rusted)(rusted) wear
wear particles
particles have
have lost
lost their
their magnetic
magnetic properties.
properties. In
In thisthis
case,
case, thethe SDM-72
SDM-72 meter
meter gives
gives aa lower
lower reading.
reading. Note
Note thatthat itit isis possible
possible toto visuallyvisually recognize
recognize
thisthisabnormality
abnormalitybecause
becausethe
thesample
sampleturns
turnsironironoxideoxidebrown-red.
brown-red.
*3.
*3.Fretting
Frettingoccurs
occursininSample
SampleNos.
Nos.66and
and9:
9:
When
When observed
observed under
under anan electron
electronmicroscope,
microscope, itit was
was foundfound thatthat most
most wear
wear particles
particles areareflattened
flattened ones
ones having
having metallic
metallicluster
luster andand areare large
large inin size
size (250(250 μm
μm max.)max.) That’s
That’s why
why thethe
ICP-analyzed
ICP-analyzed

value
value

isis

low.
low.

Fluorescent
Fluorescent

X-ray
X-rayanalysis
analysis

did
did

not
not

detectdetectany
anyelectromagnetic
electromagneticmaterials
materials except
except iron
iron (Fe).
(Fe). AA very
very small
small amountamount ofof manganesemanganese (Mn)
(Mn) waswasdetected.
detected.

-- viii
viii --

Revision History
Document No.
Date
RevisionSDM-73CEET
June 2008
Initial issue
SDM-73CEET
July 201201
SDM-73CEET
August 201302
SDM-73CEET
June 201903
SDM-73CEET
July 202004
SDM-73CEET
July 2021
05
SDM-73CEET
September 2022
06
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Manufacturer:
NEW COSMOS ELECTRIC CO., LTD.
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Osaka 532-0036, Japan
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