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INSTRUMENTS

INSTRUMENTS

Model R8140LED Light Meter

InstructionManual

REED Instruments1-877-849-2127 | [email protected] | www.reedinstruments.com

reedinstrumentswww com 2INSTRUMENTS

INSTRUMENTS

Table Of ContentsFeatures ...................................................................................................... 3

Applications ................................................................................................ 3

Specifications ............................................................................................. 4

Instrument Description ............................................................................... 5

Display Description .................................................................................... 5

Operating Instructions .............................................................................6-8

Protective Cap ......................................................................................... 6

Adjustable Probe ..................................................................................... 6

Power Button .......................................................................................... 6

Backlight (Power) Button ......................................................................... 7

HOLD Button........................................................................................... 7

Max/Min Button ....................................................................................... 7

Measurement Range Selection ................................................................ 7

Unit of Measure Selection ........................................................................ 7

Selecting the Appropriate Light Setting .................................................... 8

Characteristics of Sensor Spectrum Response ......................................... 8

Battery Replacement .................................................................................. 9

Maintenance and Care ............................................................................... 9



INSTRUMENTS

Features• Measuresambientlightlevelsofwhite,red,yellow,greenandblueLEDlightandvisiblelightinFoot-candlesorLux

• Large,backlitLCDdisplay• Detachableandrotatablelightsensor• Min/Maxanddataholdfunctions• Cosineandcolorcorrectedmeasurements• Useradjustableparameterforspecializedlightsources• Lowbatteryindicatorandautoshutoff• Includesbattery,sensorcover,andhardcarryingcase

Applications• OSHAworkenvironmentcompliance• Cinematographyandphotographyapplications• Museumexhibits• Lightingsysteminstallation• Environmentalmonitoring• Interiordesignprojects• Industrialapplications



INSTRUMENTS

SpecificationsMeasuringRange(s): Lux:0to199,900 Fc:0to19,990Accuracy: IncandescentLightSource:±(3%rdg.+5dgt) OtherVisibleLightSource:±8%rdg.Resolution: Lux:0.1 Fc:0.01ResponseTime: 500mSSensorType: Siliconphotodiodewithcolorcorrectionfilter and cosine correctionLightTypes: WhiteLED,YellowLED,GreenLED,RedLED, BlueLED,WarmWhiteFluorescent,ColdWhite FluorescentLamp,IncandescentAngledeviationfrom cosinecharacteristics: 10°±1% 30°±2% 60°±5% 80°±20%Autoranging: Yes(AutoandManual)Display: 6-digitLCDBacklitDisplay: YesDataHold: YesMin: YesMax: YesOverrangeIndicator: YesAutoShut-off: Yes(after30mins)LowBatteryIndicator: YesPowerSupply: 2xAAbatteriesBatteryLife: Approx.80hoursProductCertifications: CE,RoHSOperatingTemperature: 32to104°F(0to40°C)StorageTemperature: 14to122°F(-10to50°C)OperatingHumidityRange: 0-80%Dimensions: 6.7x2.5x1.5”(169x63x37mm)Weight: 7.4oz(210g)



INSTRUMENTS

Instrument Description

1. Lenscover2. Lightsensor3. LCDdisplay4. Powerbutton5. Backlight(Power)button6. HOLDbutton

Display Description

7. Max/Minbutton8. Rangeselectorbutton9. Fc/Lxselectorbutton10.Batterycover11.Setbutton



INSTRUMENTS

Operating InstructionsPress the POWERbuttontoturnthemeteron.“CAP-”willauto-appearontheLCDdisplay.After“CAL-”appears,themeterautomaticallyadjuststozero.Whenautomaticzeroadjustmentiscompleted,“CAL-” disappearsand“0.0”willappear,confirmingthecapcanberemovedtostart measuring. Press the POWERbuttonagaintoturnoffthemeter,andcoverthelightsensorwiththeprotectivecap.

Note:If“ERR1”appears,checktheprotectivecaptoinsureitisproperly secured.

Protective CapThis is used to protect the light sensor from damage and creates a completedarkenvironmentforthemetertoself-calibrateonstart-up.

Adjustable ProbeDependingontheapplication,thelightprobecanbeadjustedorremovedfrom the meter.

Power ButtonPushthisbuttontoturnonthemeter.Pushandholdthisbuttonfor3seconds to turn the meter off. The unit willautomaticallyturnitselfoffafter30minutesofinactivity.Todisabletheautomaticpowerofffunction,turnthemeteroff,pushandholdthe“ ”button,thenpushthePOWER buttontoturnthemeteron.The“ ”willdisappearfromtheLCDconfirmingthis setting.

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INSTRUMENTS

Backlight (Power) ButtonPushthisbuttontoturntheLCDbacklightONandOFF.Thebacklightwillautomaticallyturnoffafter30secondsinordertopreservebatterypower.

HOLD ButtonTheusermayholdthecurrentreadingontheLCDdisplaybypressingthe“ ”button.Ausermaypressthebuttonagaintoresumenormaloperating mode.

Max/Min ButtonBypushingthisbutton,theusermayswapbetweenmaximum,minimumandcurrentreading.Pushandholdthiskeyfor3secondstoexitMAX/MINmodeandreturntonormaloperatingmode.

Measurement Range SelectionTheusermayusethisbuttontoselectthepreferredmeasuringrange.Theavailablerangesare:AUTO,200,2000,20000,200000lx/AUTO,20,200,2000,20000fc.

Unit of Measure SelectionPressthisbuttontotogglebetweenFootCandleandLuxunit of measurement.

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INSTRUMENTS

Selecting the Appropriate Light SettingPress the button,andusethe and buttonstoselectapresetcorrectionsettingfromL0toL8.Accordingtothelightingsource,theusershould set their appropriate preset correction for the accurate measuring result. The user can set his correction factor if a high precision light meter with“V( )”<3%isavailable.Chooseoneofthefollowingsettingsbasedon your light source:

L0:StandardincandescentlightsourceL1:LEDwhitedaylight(5000K)L2:LEDAMBER(YELLOW)light(3000K)L3:LEDGREENlightL4:LEDREDlightL5:LEDBLUElightL6:WarmWhiteFluorescentLamp(2700K)L7:ColdWhiteFluorescentLamp(6500K)L8:usersetupmode

Characteristics of Sensor Spectrum Response



INSTRUMENTS

Battery ReplacementWhenbatteryindicatordisplaysalowbattery,theusershouldreplacethebattery.ThebatterycovercanbeopenedwithaphilipsscrewdriverandtwoAAtypebatteriesshouldbereplaced.

Maintenance and Care• Repairsorservicingnotcoveredinthismanualshouldonlybe performedbyqualifiedpersonal.

• Periodicallywipethemeterwithadrycloth.Donotuseabrasivesor solventsonthisinstrument.

ForserviceonthisoranyotherREEDproductorinformationonotherREEDproducts,[email protected].



INSTRUMENTS

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