AEMC CA832 Manual de usuario
SOUND LEVEL METER
SONOMETRO
SONOMÈTRE
CA832
ENGLISH User Manual
7
ESPAÑOL
FRANÇAIS
Manual de Instrucciones
Notice de fonctionnement
Statement of Compliance
Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments
certifies that this instrument has been calibrated
using standards and instruments traceable to
international standards.
We guarantee that at the time of shipping your
instrument has met its published specifications.
An NIST traceable certificate may be
requested at the time of purchase, or obtained
by returning the instrument to our repair and
calibration facility, for a nominal charge.
The recommended calibration interval for this
instrument is 12 months and begins on the date of
receipt by the customer. For recalibration, please
use our calibration services. Refer to our repair
and calibration section at www.aemc.com.
Serial #: ________________________________
Catalog #: 2121.23
Model #: CA832
Please fill in the appropriate date as indicated:
Date Received: _________________________________
Date Calibration Due: _______________________
Chauvin Arnoux®, Inc.
d.b.a AEMC®Instruments
www.aemc.com
Sound Level Meter Model CA832
1
Table of Contents
1. INTRODUCTION....................................................................3
1.1 International Electrical Symbols................................................3
1.2 DenitionofMeasurementCategories .....................................4
1.3 ReceivingYourShipment..........................................................4
1.4 OrderingInformation.................................................................4
2. PRODUCT FEATURES...........................................................5
2.1 Description................................................................................5
2.2 Control Features.......................................................................6
2.3 DisplayFeatures.......................................................................7
3. SPECIFICATIONS..................................................................8
3.1 ReferenceConditions ...............................................................8
3.2 ElectricalSpecications ............................................................8
3.3 EnvironmentalSpecications....................................................9
3.4 MechanicalSpecications ........................................................9
3.5 SafetySpecications ................................................................9
4. OPERATION ........................................................................10
4.1 Measurement Conditions........................................................10
4.1.1 BackgroundNoise ......................................................10
4.1.2 Interference.................................................................10
4.2 OperatingtheSoundLevelMeter...........................................11
4.2.1 MeasurementRangeSelection ..................................11
4.2.2 FrequencyWeightingOptions.....................................11
4.2.3 ResponseTimeOptions .............................................12
4.2.4 Practical Measurement Conditions .............................12
4.3 UsingtheAuxiliaryOutputandTripod ....................................13
4.3.1 AnalogOutput.............................................................13
4.3.2 MountingtheMeterontoaTripod...............................13
ENGLISH ................................................................................................... 1
ESPAÑOL................................................................................................. 18
FRANÇAIS.........................................................................................................35
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Sound Level Meter Model CA832
5. MAINTENANCE...................................................................14
5.1 ChangingtheBattery ..............................................................14
5.2 Cleaning..................................................................................14
RepairandCalibration...........................................................................15
TechnicalandSalesAssistance ............................................................15
Limited Warranty ...................................................................................16
WarrantyRepairs...................................................................................16
Sound Level Meter Model CA832
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CHAPTER 1
INTRODUCTION
Warning
● Thesoundlevelmeterisameasurementinstrumentthatmust
beprotectedfromstrongimpactsandvibrations.
● Themicrophonemustbeprotectedfromexposuretowater
anddustandmustnotbestoredinhumidand/orexcessively
hotareas.
● Donotremovetheprotectivefoamcoverfromthemicrophone.
● Cleaningthemicrophoneisnotrecommended.
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by double or rein-
forced insulation.
This symbol on the instrument indicates a WARNING and that the operator
must refer to the user manual for instructions before operating the
instrument. In this manual, the symbol preceding instructions indicates that
if the instructions are not followed, bodily injury, installation/sample and
product damage may result.
Risk of electric shock. The voltage at the parts marked with this symbol may
be dangerous.
This symbol refers to a type A current sensor. This symbol signifies that
application around and removal from HAZARDOUS LIVE conductors is per-
mitted.
In conformity with WEEE 2002/96/EC
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Sound Level Meter Model CA832
1.2 Definition of Measurement Categories
Cat. I: Formeasurements oncircuits notdirectly connectedto theAC
supply wall outlet such as protected secondaries, signal level,
andlimitedenergycircuits.
Cat. II: For measurements performed on circuits directly connected to
the electrical distribution system. Examples are measurements
onhouseholdappliancesorportabletools.
Cat. III: For measurements performed in the building installation at
the distribution level such as on hardwired equipment in xed
installation and circuit breakers.
Cat. IV: For measurements performed at the primary electrical supply
(<1000V) such as on primary overcurrent protection devices,
ripplecontrolunits,ormeters.
1.3 Receiving Your Shipment
Uponreceivingyour shipment,makesure thatthecontents are consis-
tentwiththe packinglist.Notify your distributorofany missingitems.If
theequipmentappearstobedamaged,leaclaimimmediatelywiththe
carrierandnotifyyourdistributoratonce,givingadetaileddescriptionof
anydamage.Savethedamagedpackingcontainertosubstantiateyour
claim.
1.4 Ordering Information
Sound Level Meter Model CA832.....................................Cat. #2121.23
Includes meter, shockproof holster, protective foam microphone cap,
screwdriver, male jack connector, assembly screw for camera type tripod,
9V battery and user manual.
Sound Level Meter Model CA832
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CHAPTER 2
PRODUCT FEATURES
2.1 Description
The CA832 digital sound level meter is designed to measure ambient
soundinaccordancewithsafetyand/orworkstandards.
ComplieswithstandardIEC651.
Theprofessionalanddomesticapplicationsarenumerous:measuringthe
soundlevelsinfactories,schools,ofces,airports,studios,auditoriums,
etc.
TheCA832isaportable,compactinstrumentwitha2000pointdisplay
operableinonehandandmaybettedonaphotographer’stypetripodfor
longdurationmeasurements.
TheCA832isusedtomeasuresoundlevelsfrom37to130dBin3ranges:
37-80dB,50-100dB,80-130dB.
Thismeterfeatures2weightingcurves(AandC)formeasurementinte-
grating the sensitivity of the human ear according to sound frequency.
CurveAisageneral-purposecurvetypicallyusedinaindustrialenviron-
ment,andCismoresuitedforlowfrequencysounds.Also,mode‘F’(fast
response time) corresponds to the response time of the ear. Mode ‘S’
(slowresponsetime)willbeusedtoobtainauniformreadingwhenthe
soundsignallevelshowsuctuations.
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Sound Level Meter Model CA832
2.2 Control Features
SOUND METER
Model CA832
RANGE
F
S
OFF
F
S
OFF
A/C>2sec
FSAC
37-80 50-100 80-130 dB
MAX
MAX
CAL
1
2
36
79
10
11
8
4
5
1. Measuringhead,includingmicrophone(protectedbyafoamcap)
2. Backlit LCD
3. Push-buttonformeasurementrangechange
4. Dual-functionpush-button:
ShortPress-BacklightON/OFF
LongPress(>2sec)-ChoiceoffrequencyweightingAorC
5. Femaletypeoutputforusewith‘Jack’connector
6. Push-buttontoactivate/deactivatetheMAXfunction
Sound Level Meter Model CA832
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7. Threepositionswitch:
OFF - TurnsthemeterOFF
S - Slow(Long)responsetimemeasurement
(usedfoructuatingnoiselevelmeasurements)
F - Fast(Short)responsetimemeasurement
(mostcommonoperatingmode)
8. Protectivecapforthecalibrationscrew
9. Screwdrivertobeusedforcalibration
10. 3/32"StereoMaleplugforusewithanalogoutputtoanexternal
recordingsystem
11. Assemblyscrewfortripodmount
2.3 Display Features
FSAC
37-80 50-100 80-130 dB
MAX
MAX : Maximumvalueofthemeasurement
: Lowbatterysymbol
F : Fasttimecompensation(shorterresponsetime)
S : Slowtimecompensation(longerresponsetime)
A : WeightingcurvetypeA
C : WeightingcurvetypeC
: Ifoneofthesetwoarrowsisdisplayedcontinuously,thismeans
thatyouarenotintheappropriatemeasurementrange.Usethe
RANGEpush-buttontomovetotheappropriaterange.
OL : Indicatesoverloadofthemeasuringinstrument
37-80,50-100,80-130dB:Measurementrangecurrentlyinuse
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Sound Level Meter Model CA832
CHAPTER 3
SPECIFICATIONS
3.1 Reference Conditions
Frequency: 1000Hz
Sound Level: 94dB
Temperature: 68°F (20°C)
Humidity: 65%
Measurement Range: 80-130dB
Incidence Direction: Frontal
3.2 Electrical Specifications
Standard: IEC651,Type2
Range: Lo - 37 to 80dB
Med - 50 to 100dB
Hi - 80 to 130dB
Resolution: 0.1dB
Precision: ±2.0dB
Accuracy: ±1.5dB(ref94dB@1KHz)
Dynamic Range: 50dB
Frequency Range: 31.5 to 8000Hz
Frequency Weighting: AandCperIEC651
Time Weighting: Slow(S)andFast(F)perIEC651
Microphone: Electretcondensermicrophone
Sensor Calibration: Calibratedatfactoryusingasourceat0.2%
Measurement Period: 2.5timespersecond
NOTE: For frequencies lower than 100Hz, the difference between two
measuringrangescanbehigherthan0.7dB.
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