Casella-cel CEL-414 Manual de usuario

SOUND LEVEL METERSCEL-266/3, CEL-275/3, CEL-414/3CEL-493/3 - Type 1CEL-328/3, & CEL-383/3 - Type 2Operator’s Handbook

Figure 1: Block diagram920001CEL-192 Microphone30 dBGainA-WtgLin. orC-WtgFreqWeightingFAmplifierCalExternal Power SupplyPowerSupplyBatteriesDisplayA /

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L40+920002Pause ResetCALFunctionRangeOFFBATON805020PIFSACFAFLSEL__EVENT 1SMBATPSELT3LT5BATPSEOSHDODLEQSPLMAXDURDATUM 5 10 15 20 25A, B &VersionCEL

3.2Control Facilitiesµ

3.3General Reset920003LEQSPLMAXDURDATUMSEL EVENT1SM40+10 15 20 255AFLLOW BAT OVERLOADCBATPSELT3LT5BATPSEOSHDODBATPSE1SMSPLMAXDUR31 63 125 250 500 1k 2

3.4Display

3.5Auxiliary Outputs92000412345678910111213141.2.3.4.5.6.7.8.9.10.11.12.13.14.Batt +Batt - (0V: Instrument ground)Not usedUn-filtered AC OutAnalog gro

ΩΩ3.6Auxiliary InputsΩΩ3.7Octave Filters±

3.8Batteries & AuxiliaryPower SuppliesCautionDO NOT use any battery withdamaged insulation orsleeving. DO NOT connect acharger unit to the auxilia

21.2191.5121.2291.5221.2192.5321.2292.5421.1194.78

WarningA potentially hazardoussituation can occur if anexternal power supply isconnected while the internalbatteries are still in place.Instrument dam

4.2Fitting Microphones &PreamplifiersCautionDo not fit any microphone orpreamplifier while the poweris switched ON.WarningDO NOT screw a CEL-250 o

5. FIELD ACCURACY CHECK (ACOUSTIC CALIBRATION)

⁄⁄1/2" MicrophoneCalibrator'O' RingShoulder'O' RingMicrophone CouplerShoulder& Preamplifier1/4" Microphone900108CEL-

6. OPERATION

6.1General Procedures

6.2Measurement of SoundPressure Level - SPL6.3Measurement of OneSecond Mode - 1SM (notCEL-266/3, CEL-328/3 orCEL-414/3)880020Pause ResetCALFunctionRan

6.4Duration of Measure-ment Period - DUR6.5Measurement of Maxi-mum Value - L6.6Measurement ofEquivalent ContinuousLevel - L(notCEL-328/3E or CEL-414/3

6.7Measurement of SoundExposure Level - SEL (notCEL-266/3, CEL-328/3 orCEL-414/3)6.7.1Event Times Deter-mined by Threshold Level(only CEL-493/3)Delay

6.7.2 Events Timed Manu-ally (not CEL-266/3, CEL-328/3 or CEL-414/3)

Contents Page

6.8Measurement of 3 & 5sCumulative Average - L&L (A, B & CEL-493/3)6.9Measurement of L&L (C & D notCEL-414/3)6.9.1 Setting the Thr

6.9.2 L &LMeasurement6.10 Frequency AnalysisUsing Built-in OctaveFilters (only CEL-266/3 &CEL-328/3)

7.1Frequency AnalysisWith Ext. Filter Sets (notCEL-266/3 or CEL-328/3)7.2Use With CEL-3025Vibration Attachment Kit7. USE WITH OTHER EQUIPMENTFigure 10

7.3Recording With CEL-238A, CEL-338, & CEL-438 Digital Recorders &Analysers (B, D &CEL-493/3)920006CEL-225/3 or CEL-225CEL Sound Level Met

WarningRemove the sound levelmeter batteries when it is tobe powered by the CEL-238A,CEL-338, or CEL-438.¤¤¤¤¤¤¤7.4Use With TapeRecorders

7.4.1 Recording With aTape RecorderC4425/2UHER 4000920010Sony TCD D10DAT Recorder930054SC167 (D10)Handset Cable (Attached)SpeciallyRemoteConvertedHand

⁄

7.4.2 Replay From a TapeRecorderUHER 4000CEL-216C3526/2920011CEL-316Figure 17: Connection with a taperecorder (Uher 4000) for replay

⁄7.5Graphic Level Recorders

BIT7654321Ø1WØØFFFF920008CEL-160C4416/2 or C4534/2Figure 18: Connection withCEL-160 Graphic Level Recorder8. DIGITAL INTERFACE (B & D, and CEL-493

Contents Page

BIT7654321Ø1WØCFFFFBIT 7 6 5 4 3 2 1 ØØTTFRPBVHBIT 7 6 5 4 3 2 1 ØØØXXXXXX

BIT7654321ØØØXXXXXXIn addition to the serial SEL output, thereis a 5 V CMOS digital output on line 14 ofthe auxiliary socket to control taperecorders

9.1Sound Pressure Level(SPL)= ( )= ( )9. EXPLANATION OF TERMS USED

9.2Duration of Measure-ment Period (DUR)9.3Equivalent ContinuousNoise Levels (L)=∫( )

=∫( )IIII[( )+( )+( )]9.4Sound Exposure Level(SEL or L)=∫( )= −=+ ( − )= [( )+( )+( )]

( ) = −= [( )+( )]9.5Maximum Value (9.6Peak Maximum Value= [( )]9.73 & 5s CumulativeAverage Values ( L&L- A, B & CEL-493/3)

9.8L &L (C&DVersions)10.1 Digital Interface for A& C Versions10.2 1SM MeasurementLink10. POST PRODUCTION DEVELOPMENTS

II±±⁄⁄11.SPECIFICATION

±±

Table 4: Measurement range of CEL-493/3Range Freq Display Primary Primary PulseSetting Wtg Range Linearity Linearity RangeRange* Range PeakIEC 651 IEC

IICELTypeEuropeanVersionsAmericanVersionsOct.FilterABI/faceCDI/faceE328/3Type 2XX X X383/3Type 2XXXX266/3Type 1XX X275/3Type 1XXXX414/3Type 1X493/3Typ

Ω

ΩΩΩTable 5: Typical noise floor in pass bands CEL-266/3 [and CEL-328/2]Centre 20 (Lo) 20 (Lo) 50 (med) 80 (Hi)Freqency A-weighted Linear A + Lin A + L

ΩΩMessageMessage12. ERROR MESSAGES

13.MANUFACTURERS SERVICING & WARRANTY

14. PTB TYPE APPROVALIntegrierende Oktavband-Schallpegelmessernach DIN IEC 651 Kl 1Iund DIN IEC 804 Kl.1CEL Instruments LtdGB - SG5 1RTTyp CEL-266/3AN

C-RETINFReason for Return/Nature of Fault DateCustomer ReferenceCustomer NameAddressPhone No.Contact NameInstrument TypeSerial NumberInstrument TypeSe

Table 1: Functions available with various time weighting selectionsVersion Time WeightingA, B & C & D E 414/3 Fast Slow ImpulsePeak493/3Sound

⁄⁄⁄⁄2. SCHEDULE OF PARTS

3.1Technical Description⁄⁄⁄3. DESCRIPTION

⁄