Extech Instruments SL400 User manual

USERGUIDE

NoiseDoseMeter
ModelSL400
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2SL400‐en‐GB_V1.02/16
Introduction
ThankyouforselectingtheExtechInstrumentsModelSL400.Thisdeviceisshippedfullytested
andcalibratedand,withproperuse,willprovideyearsofreliableservice.Pleasevisitourwebsite
(www.extech.com)tocheckforthelatestversionofthisUserGuide,ProductUpdates,Software,
andCustomerSupport.
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Safety
CAUTION:Avoidtakingmeasurementsinhumidorwetenvironments.
WARNING:Ensurethattheambienthumidityconditionsarewithinthosespecifiedandreferenced
intheEnvironmentalConditionssection.
WARNING:Avoidtakingmeasurementsinthepresenceof:
Explosivegases
Combustiblegases
Steam
Excessivedust
CAUTION:Donotoperatetheinstrumentinambienttemperatureandhumidityconditionsbeyond
thoserecommendedandreferencedintheEnvironmentalConditionssection.
ATTENTION:Keepthemicrophonedryandavoidseverevibration.
ATTENTION:Windblowingacrossthemicrophonecanaddextraneousnoise.Iftheinstrumentis
usedinwindyconditions,usethesuppliedmicrophonewindscreentopreventundesirablesignals.
Thefollowingsymbolsareused:
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Caution:Incorrectusemaydamagetheinstrument.
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TheinstrumentconformstotheCEstandard
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SuppliedAccessories
User’smanual
Carryingcase
9Vbattery
Microphoneandwindscreen
PCSoftware
MINIUSBCable(MiniBtype)


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3SL400‐en‐GB_V1.02/16
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Description
MeterDescription
1. MicrophoneConnector
2. USBInterface(Side)
3. LCDDisplay
4. PowerButton
5. Microphoneandwindscreen
6. NavigationButtons
7. Start/PauseButton
8. MicrophoneCable
9. REC/MEMButton
10. ENTERButton
11. SETButton
12. StopButton
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DisplayDescription
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  BatteryStatus
  AutoPowerOffEnabled
  Pause
  115dBindicator(SPL)
  Stop
 140dBindicator(Peak)
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4SL400‐en‐GB_V1.02/16
  Start
 USBInterface
  SPLHighdBRange(70~140)
  SPLmiddledBRange(50~110)
  SPLlowdBRange(30~90)
  dBlevel
  Testingmode
 SoundLevelMetermode
  NoiseDose%
  SoundLeveldBunit
  Aweighting
  CWeighting
  ZWeighting
Fastresponse
SlowResponse
 ImpulseWeighting
 OverRange
 UnderRange
 Solid:Autorecordstandby;Flashing:Recording
 Starttesttime(begin)
 Viewrecordeddata
 Stoptesttime
 SETmode
 Testduration
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5SL400‐en‐GB_V1.02/16
SetMode
Pressthebuttontoentersetmode.Thereareatotalofsevenfunctionsinsetmode:Test
Mode,PowerOff,SamplingTime&AutoRecord,RealTimeClock,94dBOffsetAdjust,Noise
Standard,andSLMfunction.
PresstheSETbuttontomovetothenextparameterorPressentertoexitsetupmode.
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TestModeSet
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Pressthe or buttontochangethetestmodebetweenNDM(NoiseDoseMeter)andSLM
(SoundLevelMeter).
PresstheSETbuttontomovetothenextparameterorPressenter toexitsetupmode.
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AutoPowerOffSet
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Presstheor buttontoenableordisableAutoPowerOffFunction.
AutoPowerOffwillturnoffthemeterin15minutesifthemeterisnotrecordingdata.
PresstheSETbuttontomovetothenextparameterorPressentertoexitsetupmode.
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6SL400‐en‐GB_V1.02/16
SamplingTime&AutoRecordSet
Use the or buttontoselecteitherAutoRecordingsetorSamplingtime.
Usetheor buttontoenableordisableAutorecord(OnorOff)ortoadjustthesampling
time.Theminimumsamplingtime(intervalrate)is1readingpersecond.Themaximumsampling
timeis23hours,59minutes,and59seconds.
PresstheSETbuttontomovetothenextparameterorPressenter toexitsetupmode.
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RealTimeClockSet
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Pressthe or buttontoselecttheoptiontoadjusttheRealtimeclock(24hour).
Usetheor buttontoadjustthetimedigits.
PresstheSETbuttontomovetothenextparameterorPressenter toexitsetupmode.
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7SL400‐en‐GB_V1.02/16
94dBOffsetAdjust(Calibration)
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Seesectiononmetercalibrationbeforeproceedingwiththisparameter.
PresstheSETbuttontomovetothenextparameterorPressentertoexitsetupmode.
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NoiseStandardSet
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Presstheor buttontoselectaNDMtestingregulatorybodyabbreviation:OSHA,MSHS,
DOD,ACGIH,ISO85,ISO90,andUSER.
PresstheSETbuttontomovetothenextparameterorPressenter toexitsetupmode.
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8SL400‐en‐GB_V1.02/16
SLMFunctionSet
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Presstheor buttontochangeatestfunction.Theseinclude:
, , and 
, , and 
, , and 
PeakCandPeakZ
Presstheor buttontoselectthenexttestparameter:
Timeweighting  (Fast,Slow,orImpulse),
Frequencyweighting (A,CorZ),
Peakfrequencymeasurement(CorZ).
Soundlevelrange  (high,medium,orlow)
High–70to140dB
Medium–50to110dB
Low‐ 30to90dB
PresstheSETbuttontomovetothenextparameterorPressentertoexitsetupmode.
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9SL400‐en‐GB_V1.02/16
Calibration
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AutomaticModeCalibration
SetthemetertoSLMmode,Aweighting,Highrange,andSlow.
Attacha94.0dB(1000Hz)soundcalibratortothemicrophone.
EnterSETmodeandgototheparameter94ADJ.
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PresstheRun keytostarttheautomaticoffsetroutineandwaitfortheflashingdBnumber
toappear.
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PresstheEnter keytosavetheentryandtogetbacktothemeasurewindow.
Themetershouldnowread94.0dB(+/‐0.1dB).
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Ifthemeasuredvaluedoesnotequal94.0(+/‐0.1dB),runthe94ADJroutineagain.
PresstheEnterkeytosavetheentryandtogetbacktothemeasurewindow.
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10SL400‐en‐GB_V1.02/16
ManualModeCalibration
SetthemetertoSLMmode,Aweighting,Highrange,andSlow.
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Attacha94.0dB(1000Hz)soundcalibratortothemicrophoneandwaitforabout1minuteand
notethesoundvalueonthedisplay.Writedownthevalue.

Calculatethevalueoftheoffsetfromthedisplayedvaluetothesourcednoiselevel.
Inthisexamplethevalueis+1.3(94.0dBsourced,and92.7dBdisplayed)
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EnterSetmodeandgototheparameter94ADJ.
UsingtheUpanddownarrowssettheoffsetaccordingtotheoffsetcalculated.
Inthisexample–set94ADJto1.3
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PresstheEnterkeytosavetheentryandtogetbacktothemeasurewindow.
Themetershouldnowread94.0dB(+/‐0.1dB).
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11SL400‐en‐GB_V1.02/16
Operation
SoundLevelMeasurementProcedures
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Pressthe buttontoturnonthemeter.TheLCDwilldisplaytheSPLsymbol,withSLMonthe
lowerline.IfSLMisnotvisiblepressSETandNDMwillappear,presstheDownarrow to
changetoSLMandpressentertoexit.
Pressthe buttontoscrollthroughtheavailabletestfunctionsforthismode:SPL,Leq,SEL,and
PKMAX.
Pressthebuttontobegintesting.Pressthe buttonagaintopausetesting.
Ifthereadingexceedsthehightestingrange,theLCDdisplaywillshow.Ifthereadingis
belowthelowtestingrange,theLCDdisplaywillshow.
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TheLeqintegraltimeisthesamevalueasthesamplingtimesetting.
Whenthesamplingtimeissettozero,theintegrationtimecontinuesuntiltheuserexitsthemode.
Pressthe buttontostopthetest.

Caution:Windblowingacrossthemicrophonecanaddextraneousnoise.Whenthereiswind
presenthigherthan10m/s,thewindscreenmustbeusedtopreventundesirablesignals.Keepthe
microphonedryandavoidseverevibrations.


Note:setupofthemetercanalsobeperformedthroughthesoftware.




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12SL400‐en‐GB_V1.02/16
AutoDataRecording








Pressthebuttontoenabletheautodatarecordfunction.The symbolwillflashonthe
LCDdisplay.ThebottomleftoftheLCDdisplaywillshowWRITE,ateachsampleintervaltoindicate
thatthedatawaswrittentothemeter’sinternalmemory.

Erasememory
WhenthebottomleftoftheLCDdisplaysFULL,theinternalmemoryisfull.Theautofunction
cannotbeuseduntilthedatastoredinmemoryisdownloadedandcleared.

Note:Thememorycanonlybedownloadedanderasedusingthesoftware.


Manual‐SingleDataPointRecording
Pressthe buttontostorethedisplayedreading.The symbolwillflash.Thebottomleftof
LCDdisplaywillshowWRITE,indicatingthatthesingledatapointwaswrittentothemeter’s
internalmemory.

Note:SingleDataPointrecordingdoesnotfunctionwhilethemeterisinAutoDataRecording
mode.

Toviewmanuallyrecordeddata,seetheheadingViewLoggedSoundLevelReadingsor
ViewLoggedDOSEreadings.







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13SL400‐en‐GB_V1.02/16
NoiseDoseMeasurementProcedures

Pressthe buttontoturnonthemeter.TheLCDwilldisplaytheSPL(soundpressurelevel
icon).IfSLMisshowinginthelowerline,PressSETandpressthedownarrowtochangeSLM
toNDM.PresstheEnterbuttontoexitsetup.Pressthe buttontoenablenoisedose
testing.Pressthebuttonagaintopausetesting.Press tostoptesting.
Pressthebuttontoscrolltheavailabletestoptions:SPL,Dose%,LPMAX,LPMIN,PKMAX,LEQ,
SEL,LEP8,TWA8,LVAG,LN5%,LN10%,LN50%,LN90%,andLN95%.
Pressthebuttontoviewthestarttesttimeanddate.Pressthe buttontochangetheview
fromtimetodateandbacktothetimedisplay.ThetimeformatisHH:MM:SSandthedateformat
isYY‐MM‐DD.

ViewLoggedSoundLevelReadings

ForSoundlevelreadings,SLMmustappearonthelowerline.Pressandholdthebuttonfor
morethan1sectoentertheviewingmode.Pressthe or buttontoscrollthroughthe
readings.
Pressthe buttontoselectthedoserecordinformation(NoiseDoseMetermode):Testmode,
StartTime,Testduration,Totalpausetime,Testendtime.
Pressthe buttontoviewtheteststartdate,Pressthe buttontoviewtheteststarttime.The
timeformatisHH:MM:SSandthedateformatisYY‐MM‐DD.
Pressandholdthebuttonformorethan1secagaintoexittheloggeddataviewingmode.
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14SL400‐en‐GB_V1.02/16
ViewLoggedDOSEreadings

Note:ItisbesttoviewtheDOSEdatafromthesoftwareinterface.
RefertotheSL400SoftwareHelpguide.
ForDOSEnoisereadings,SLMmustNOTappearonthelowerline.IfSLMappearsonthebottom
line,changethemodetoNDMinSetupmode.
Pressandholdthe buttonformorethan1sectoentertheviewingmode.

Pressthe or buttontoscrollthroughtheDoserecordinglog.
Pressthe buttontoselectthedosetestoptions:SPL,Dose%,LPMAX,LPMIN,PKMAX,LEQ,SEL,
LEP8,TWA8,LVAG,LN5%,LN10%,LN50%,LN90%,andLN95%.
Pressthe buttontoviewtheteststarttime,Pressthe buttontoviewtheteststartdate.The
timeformatisHH:MM:SSandthedateformatisYY‐MM‐DD.
Pressandholdthebuttonformorethan1secagaintoexittheloggeddataviewingmode.

GraphicWindowMode
Right‐clickontheimageandchooseVIEWanduncheckGraphicWindowmodeforfullview.

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15SL400‐en‐GB_V1.02/16
Definitions
Measurement Parameters
Test
Function
Screen
parameter
Explanation
SPLLAFpSoundpressurelevel(SPL)
SPLLASpSoundpressurelevel(SPL)
SPLLCFpSoundpressurelevel(SPL)
SPLLCSpSoundpressurelevel(SPL)
SPLLZFpSoundpressurelevel(SPL)
SPLLZSpSoundpressurelevel(SPL)
LeqLAFqEquivalentcontinuouslevelforthedurationofthe
measurementforAweighting
LeqLCFqEquivalentcontinuouslevelforthedurationofthe
measurementforCweighting
LeqLZFqEquivalentcontinuouslevelforthedurationofthe
measurementforZweighting
SELLAEFrequencyweightedsoundexposurelevelforthedurationof
themeasurementforAweighting
SELLCEFrequencyweightedsoundexposurelevelforthedurationof
themeasurementforCweighting
SELLZEFrequencyweightedsoundexposurelevelforthedurationof
themeasurementforZweighting
PeakLcpeakInstantaneousCpeaklevel
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16SL400‐en‐GB_V1.02/16
Maintenance

BatteryReplacement
Whenthebatteryicon( )appearsontheLCD,thebatterymustbereplaced.Turnoffthe
meterandremovetherearbatterycover.Removebatteryfromthebatteryholderandinserta
new9Vbattery(Alkaline)observingcorrectpolarity.Re‐installthebatterycover.
oPleasedisposeofbatteriesresponsibly;observeallregulations.
oNeverdisposeofbatteriesinafire;batteriesmayexplodeorleak.
AllEUusersarelegallyboundbytheBatteryOrdinancetoreturnallusedbatteriesto
communitycollectionpointsorwhereverbatteries/accumulatorsaresold!
Disposalinhouseholdtrashorrefuseisprohibited!
Disposal:Followthevalidlegalstipulationsinrespectofthedisposalofthedeviceatthe
endofitslifecycle
Cleaning
Tocleantheinstrument,useasoftdryclothtoremovedustfromthemeterhousing.Donot
touchthemicrophonesoundentryport.Neverusewetcloths,solvents,orliquidstocleanthe
meterhousing.
A,C,andZWeightingConsiderations
TheAweightingcurveisbasedon40Phonfletcher‐MunsonEqualLoudnessContour.Fornoise
assessmentsoftheeffectsofnoiseonhumanhearing,theAweightingmodeisrecommended.

TheCweightingmodeisrecommendedformachinesoundmonitoring(steady,dronetype).

TheZweightingoffersalinearsignalresponsethatisnotprocessedthroughthemeter’sfilter.Z
weightingissuitableformonitoringelectricalsignals(ACorDCsignalsforresearchpurposes,for
example).


AppendixA

DoseStandardsSelectionlist

OSHAOccupationalSafetyandHealthAdministration(USA)
MSHAMineSafetyandHealthAdministration(USA)
DoDDepartmentofDefense(USA)
ACGIHAmericanConferenceofGovernmentalIndustrialHygienists(USA)
ISO85European
ISO90European
UserUserdefinedparameters(settingscanbesavedtoafileImport/Export)
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17SL400‐en‐GB_V1.02/16
Specifications
DisplayLCDtype(MAXreading999999)
DisplayRefreshRate1reading/second
StandardsIEC61252‐1993
IEC61672‐1‐2003
ANSIS1.25‐1992
ANSIS1.4‐1983
ANSIS1.43‐1997
Microphone1/2inchElectretcondensermicrophone
Measurements(NDM)SPL,DOSE%,LPMAX,LPMIN,PKMAX,LEQ,SEL,LEP8,TWA8,
LAVG,L5%,L10%,L50%,L90%,L95%
Measurements(SLM)SPL,LEQ,SEL,PKMAX
DisplayRange

30dBto90dB(L)
50dBto110dB(M)
70dBto140dB(H)
PrimaryRMSRange@1KHZ
41dBto86dB(L)
55dBto106dB(M)
75dBto125dB(H)
MaximumPeakCWeighting
SoundLevelMeasurement
90~143dB
DynamicRange60dB
Accuracy±1.4dB@94dB/1KHZ
InternalmemoryMAXDataloggerdata:10000(NDM);999,999(SLM)
TimeWeightingFast,Slow,Impulse
FrequencyWeightingA/C/Z
FrequencyRange20Hz~8KHz
StartingTime＜10Second
Batterydata24hourbatterylife;9VAlkalinebattery
Dimensions107(L)x65(W)x33(H)mm;4.21(L)x2.56(W)x1.30(H)in.
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18SL400‐en‐GB_V1.02/16
Microphone
Diameter:½inch
Polarizationvoltage:0V
Dynamicrange:25dB~140dB
Sensitivity:‐32±3dB(250Hz0dB=1V/Pa)
Freefieldfrequencyresponse:±2dB(25Hz~12.5kHz)
Frequency(kHz) Pressure deviation
0.250.0
1‐0.1
2‐0.5
3‐0.6
4‐0.9
5‐1.2
6‐1.7
7‐2.2
8‐2.8
9‐3.3
10‐4.1
12.5‐6.0
InputInterface
The front is PLT83RFR, the signal input receptacle
1. GND
2. Power (+)
3. N.C.
4. Power (-)
Environmental
Environmentalconditions:temperature23°C±5°C(73.4°F±9°F),relativehumidity<80%.
˙ Forinsideuse,maxaltitude2000m(6562ft.)
˙ Referencetemperature23°±5°C(73.4°F±9°F)
˙ Operatingtemperature5~40°C(41~104°F)
˙ Operatinghumidity <80%RH
˙ Storagetemperature‐10~60°C(14~140°F)
˙ Storagehumidity <70%
EMC
ThisinstrumentwasdesignedinaccordancewithEMCStandardsinforceanditscompatibilityhas
beentestedinaccordancewithEN61326‐2(2006).
Copyright©2016FLIRSystems,Inc.
Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform
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