AEMC CA811 Manuale utente
LIGHTMETERS
CA811
CA813
ENGLISH User Manual
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Owner’s Record
The serial number for the Model CA811/CA813 is located inside the bat-
tery compartment of the instrument. Please record this number and pur-
chase date for your records.
LIGHTMETERS MODEL CA811 / CA813
CATALOG #: 2121.20 / 2121.21
SERIAL #: _______________________________________________
PURCHASE DATE: ________________________________________
DISTRIBUTOR: ___________________________________________
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Table of Contents
1. INTRODUCTION............................................................................... 2
1.1 International Electrical Symbols................................................2
1.2 DenitionofMeasurementCategories .....................................3
1.3 ReceivingYourShipment..........................................................3
1.4 OrderingInformation.................................................................3
2. PRODUCT FEATURES ...................................................................... 4
2.1 Description................................................................................4
2.2 Button Functions.......................................................................5
2.2.1 Center(Yellow)FunctionSwitch ...................................5
2.2.2 RANGE Button..............................................................5
2.2.3 HOLD Button ................................................................5
2.2.4 Back-lightButton...........................................................5
2.2.5 MAXButton(ModelCA811).........................................5
2.2.6 PEAKButton(ModelCA813).......................................5
3. SPECIFICATIONS............................................................................. 6
3.1 EnvironmentalSpecications....................................................6
3.2 GeneralSpecications..............................................................7
3.3 SafetySpecications ................................................................7
4. OPERATION .................................................................................... 9
4.1 RecommendationsBeforeOperating .......................................9
4.2 OperatingInstructions...............................................................9
5. MAINTENANCE ............................................................................. 10
5.1 ReplacingtheBattery .............................................................10
5.2 Cleaning..................................................................................10
Repair and Calibration........................................................................... 11
Technical and Sales Assistance ............................................................11
Limited Warranty ...................................................................................12
Warranty Repairs...................................................................................12
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LightmeterModelsCA811andCA813
CHAPTER 1
INTRODUCTION
WARNING
• Donotconnectto,ortouch,anyelectricalcircuitwiththeLight-
meter.
• DonotoperatetheLightmeterinwetorexcessivelydampenvi-
ronments.
• Toavoidinjuryorrehazard,donotoperatethisproductinan
explosiveatmosphereorenvironment.
• Toavoideyeinjury,weareyeprotectionifthereisapossibilityof
hazardousordangerousexposuretohigh-intensitylightrays.
• Donotimmerseinliquids.Cleanthesensorheadonlyusinga
damp cloth.
• Placetheprotectivecoveronthesensorwhennotinuse(pro-
tectsthesensorandextendsusefulcelllife).
• Complywiththesafetyandenvironmentalspecications.
1.1 International Electrical Symbols
This symbol signifies that the instrument is protected by double or reinforced
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 permitted.
In conformity with WEEE 2002/96/EC
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LightmeterModelsCA811andCA813
3
1.2 Definition of Measurement Categories
CAT I: For measurements on circuits not directly connected to the AC
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
on household appliances or portable tools.
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, makesurethat the contents areconsis-
tentwiththe packing list.Notifyyour distributor ofanymissing items. If
theequipmentappearstobedamaged,leaclaimimmediatelywiththe
carrierandnotifyyourdistributoratonce,givingadetaileddescriptionof
anydamage.Savethedamagedpackingcontainertosubstantiateyour
claim.
1.4 Ordering Information
Lightmeter Model CA811................................................... Cat. #2121.20
Includes 9V alkaline battery, rugged, shockproof, protective holster and user
manual.
Lightmeter Model CA813 ..................................................Cat. #2121.21
Includes 9V alkaline battery, rugged, shockproof, protective holster and user
manual.
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LightmeterModelsCA811andCA813
CHAPTER 2
PRODUCT FEATURES
2.1 Description
TheLightmeterModelsCA811andCA813areportable,easy-to-useinstru-
mentsfeaturingopticalsensorsthataredesignedtomatchtheresponse
ofthehumaneye,makingthemidealinstrumentsforworkspaceanalysis
andplanning.Theergonomicallydesignedcase,largedisplayandintui-
tive function selection make these instruments the right choice for any
application.
TheLightmeterModelsCA811andCA813aredesignedforsimpleone-
handoperation.Theyprovideselectableluxorfootcandleunitsfordisplay
andfeaturea3½digitbacklitLCDdigitaldisplayandaHOLDfunction.
TheModelCA811offersaMAXfunction,whiletheModelCA813offersa
PEAKfunctionandabroaderlightresponse.
1. Photodiode sensor
2.3½digitdisplay
3. RANGE selector
4.MAX(CA811)orPEAK(CA813)
5.Removablelightsensor
6. HOLD button
7.Power/modeselector
1
2
3 6
5
7
4
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LightmeterModelsCA811andCA813
5
2.2 Button Functions
2.2.1 Center (Yellow) Function Switch
TurnstheLightmeterONandselectstheluxorfc(foot-candles)setting.
SlidetheswitchtoOFFafteruse.
2.2.2 RANGE Button
TheRANGEbutton changes the measurementrange.Atpower-up,the
selectedrangeis2000fcor2000lux.
PresstheRANGEbuttonuntilthedesiredluxorfcrangeisselected.Each
timeyoupresstheRANGEbutton,therangewillincreasebyafactorof
ten(x10),andanewvalueisdisplayed.Thescalefactor(fc,kfc,lux,klux)
isdisplayedinthelowerlefthandcornerofthedisplay.
2.2.3 HOLD Button
TheHOLDbutton“freezes”thereadingonthedisplay.
PresstheHOLDbuttontoactivatetheHOLDfunction.IntheHOLDmode,
the HOLD annunciator is displayed in the upper part of the LCD display
andthelastreadingisdisplayeduntiltheHOLDbuttonisreleased.
2.2.4 Back-light Button
Press the buttontoturntheBack-lightON.PressagaintoturnOFF.
2.2.5 MAX Button (Model CA811)
Press the buttonfor2secondstoenterorexittheMAXmode.When
enabled,MAXisdisplayedintheupperrighthandcornerofthedisplay.
TheLightmeterthenrecordsanddisplaysthemaximumabsolutevalue.It
isonlyupdatedwhenanewMAXisreached.
2.2.6 PEAK Button (Model CA813)
Press the buttonfor2secondstoenterorexitthePEAKmode.When
enabled,PEAKisdisplayedintheupperlefthandcornerofthedisplay.
In the PEAK mode, the Lightmeter records and displays the maximum
absolutevalueovera50msperiodandisupdatedwhenanewPEAKis
reached.
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LightmeterModelsCA811andCA813
CHAPTER 3
SPECIFICATIONS
Light Conversion Formulas 1 foot-candle (lumens/foot2)=10.764lux
1lux(lumens/meter2)=0.0929foot-candles
The Inverse-square Law
The inverse-square law states that the illuminant E at a point on a surface
variesdirectlywiththeintensityIofapointsource,andinverselyasthesquare
ofthedistancedbetweenthesourceandthepoint.Ifthesurfaceatthepointis
normaltothedirectionoftheincidentlight,thelawisexpressedbyE=I/d2.
Cosine Law
Thecosinelawstatesthattheilluminantonanysurfacevarieswiththecosine
oftheangleofincidence.Theangleofincidenceqistheanglebetweenthe
normaltothesurfaceandthedirectionoftheincidentlight.Theinverse-square
lowandthecosinelawcanbecombinedasE=(Icosq)/d2.
3.1 Environmental Specifications
Range (CA811): 20lux,200lux,2000lux,20klux
20fc,200fc,2000fc,20kfc
Range (CA813): 20lux,200lux,2000lux,20klux,200klux
20fc,200fc,2000fc,20kfc
Resolution: 0.01lux,0.01fc
Accuracy (Type A 2856K light source): ±5% ± 10cts
Accuracy for Common Light Sources (CA811): ±18% ± 2cts
Accuracy for Common Light Sources (CA813): ±11% ± 2cts
Cosine Angle: ƒ’2<2%cosinecorrected(150°)
Spectral Response: CIE photopic curve
Spectral Accuracy (CA811): ƒ’1<15%
Spectral Accuracy (CA813): ƒ’1<8%
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LightmeterModelsCA811andCA813
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Temperature Coefcient:0.1timestheapplicableaccuracyspecication
per°Cfrom0°to18°Cand28°to50°C(32°to64°Fand82°to122°F)
PEAK Hold Response Time (CA813):>50mslightpulse
Note: The CIE standard illuminant type A may be obtained by means of CIE
standardtypeAlightsource,whichisdenedastypeAgastypelledtung-
sten-lamentlampoperatingatacorrelatedcolortemperatureof2856K.
3.2 General Specifications
Display:3½digitLCDwithmaximumreadingof1999
Over-Range: “ ”isdisplayed
Power Source:Standard9Vbattery(NEDA1604,6LR61orequivalent)
Battery Life:200hourstypicalwithcarbonzincbattery
Low Battery Indication: The isdisplayedwhenthebatteryvoltage
dropsbelowtherequiredlevel
Sample Rate: 2.5timespersecond,nominal
Operating Temperature: 32°to122°F(0°to50°C)at<80%RH
Storage Temperature:
-4°to140°F(-20°to60°C),0to80%RHwithbatteryremoved
Accuracy:Statedaccuracyat73°±9°F(23°±5°C),<75%RH
Altitude:2000mmax
Dimensions:6.81x2.38x1.5"(173x60.5x38mm)
Weight:Approx7.9oz(224g)includingbattery
3.3 Safety Specifications
EN61010-1(1995-A2),ProtectionClassIII
OvervoltageCategory(CATIII,24V),PollutionDegree2
Indoor Use
*All specications are subject to change without notice
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LightmeterModelsCA811andCA813
CIE PHOTOPIC CURVE
683
546.4
409.8
273.2
136.6
0
(%)
100
80
60
40
20
0
CIE Photopic Curve
Lumen/Watt Conversion Factor
Luminous Efficiency Coefficient
Wavelength in Nanometers
380 420 460 500 540 580 620 660 700 (nm)
BLUE
GREEN
RED
IR
UV
Wavelength
(nm)
Vl CIE
Photopic
Luminous
Efciency
Coefcient
Photopic
Lumen/
Watt
Conversion
Factor
Wavelength
(nm)
Vl CIE
Photopic
Luminous
Efciency
Coefcient
Photopic
Lumen/Watt
Conversion
Factor
380 0.0000 0.05 570 0.9520 649.0
390 0.0001 0.13 580 0.8700 593.0
400 0.0004 0.27 590 0.7570 516.0
410 0.0012 0.82 600 0.6310 430.0
420 0.0040 2.73 610 0.5030 343.0
430 0.0116 7.91 620 0.3810 260.0
440 0.0230 15.7 630 0.2650 181.0
450 0.0380 25.9 640 0.1750 119.0
460 0.0600 40.9 650 0.1070 73.0
470 0.0910 62.1 660 0.0610 41.4
480 0.1390 94.8 670 0.0320 21.8
490 0.2080 142.0 680 0.0170 11.6
500 0.3230 220.0 690 0.0082 5.59
510 0.5030 343.0 700 0.0041 2.78
520 0.7100 484.0 710 0.0021 1.43
530 0.8620 588.0 720 0.0010 0.716
540 0.9540 650.0 730 0.0005 0.355
550 0.9950 679.0 740 0.0003 0.170
555 1.0000 683.0 750 0.0001 0.820
560 0.9950 679.0 760 0.0001 0.041
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