Extech Instruments SL400 User manual

USERGUIDE
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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.
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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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