Extech Instruments LT10 Manuale utente

USERGUIDE



PocketLightMeter



ModelLT10



Shop for Extech products at: 1.888.610.7664

ShopExtech.com

2LT10‐en‐GB_v1.14/15

Introduction



ThankyouforselectingtheExtechInstrumentsModelLT10PocketLightMeter.TheLT10measuresand

displayslightintensityinfootcandleandLuxunitsusingaprecisionphoto‐diodesensor.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.TheExtechInstrumentsbrand,

awhollyownedsubsidiaryofFLIRSystems,Inc.,isISO‐9001certified.



Safety



UseCAUTIONwhenoperatingthisdevice.Thelightsensorissensitiveandshouldbehandledwithgreat

care.



MeterDescription



1. Photodetector(LightSensor):Sensorcontainsalonglifesilicon

photodiode

2. MAX‐LUX/fcfunctionbutton:Pressbuttonmomentarilytoview

themaximum(MAX)reading.Pressthebuttonmomentarily

againtoreleasetheMAXdisplayandreturntothenormal

operatingmode.Pressandholdthisbuttonforatleast2seconds

toswitchbetweenLUXandfc(footcandle)unitsofmeasure.

Notethat1fc=10.76LUX).

3. LCDBacklightControlSensor:ThemeterswitchestheLCD

backlightONandOFFautomaticallybasedonenvironmental

lightingconditions.

4. LCDdisplay:1999count,backlitLCDwithLUX,fc,MAX,andlow

batteryicons.

5. Powerbutton:PresstoswitchtheunitONorOFF.

Note:Batterycompartmentandtripodmountarelocatedonrearof

instrument.

Shop for Extech products at: 1.888.610.7664

ShopExtech.com

3LT10‐en‐GB_v1.14/15

Operation



TurnPowerONorOFF

Pressthebuttontoturnpoweronoroff.Ifthedisplaydoesnotswitchon,checkthata9Vbatteryis

installedandisfresh.

SelectingLUXorFootcandle(fc)unitsofmeasure

PressandholdtheMAX‐LUX/fcbuttonforatleast2secondstoswitchbetweenLUXandFcunits.

MeasurementProcedure

1. SwitchthemeterONandpositionthelightsensortocapturethelightthatistobemeasured.

2. ThedisplaywillindicatethelightlevelinFcorLUXunits.

3. Themeterautomaticallyselectsthecorrectrange.Ifthe‘OL’iconappears,thelightmeasurementisout

ofrangeandcannotbemeasuredaccurately.

4. Ifthex10orx100indicatorappears,multiplythedisplayedvaluebythecorrespondingmultiplierto

obtainthecorrectmeasurementvalue.

MaxHold

MomentarilypresstheMAX‐LUX/fcbuttontoviewthehighestreading(MAX)encounteredsincethemeter

waslastswitchedON.Pressthebuttonagaintoreturntothenormaloperatingmode.ToresettheMAX

reading,switchthemeterOFFandthenONagain.

LCDBacklight

ThemeterautomaticallycontrolstheLCDbacklighting(ONandOFF)tomatchtheavailableambientlighting.



Shop for Extech products at: 1.888.610.7664

ShopExtech.com

4LT10‐en‐GB_v1.14/15

BatteryReplacement



Whenthebatterypowerbeginstofail,thelowbatterysymbolwillappearontheLCD.Replacethe9V

batterybyfollowingthesesteps.

1. Opentherearbatterycompartmenttoaccessthebattery

2. Replacethe9Vbattery,carefullysecuringthebatteryinthecompartment

3. Securelyfastenthecompartmentcover

4. Ensurethatthecompartmentcoverissecurelyfastenedbeforeusingthemeter



AllEUusersarelegallyboundbytheBatteryOrdinancetoreturnallusedbatteriestocommunity

collectionpointsorwhereverbatteries/accumulatorsaresold.

Disposalinhouseholdtrashorrefuseisprohibited.

Disposal:Followthevalidlegalstipulationsinrespectofthedisposalofthedeviceattheendofits

lifecycle



BatterySafetyReminders

Pleasedisposeofbatteriesresponsibly;alwaysobservelocal,state,andfederalregulationswithregard

tobatterydisposal.

Neverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

Nevermixbatterytypesoroldandnewbatteries.Alwaysinstallnewbatteriesofthesametype.







Shop for Extech products at: 1.888.610.7664

ShopExtech.com

5LT10‐en‐GB_v1.14/15

Specifications



GeneralSpecifications

Display1999CountBacklitLCDwithLUX,fc,battery,andMAXindicators

DisplayPolarityAutomaticallydetectspolarity;displays(‐)fornegativepolarity

OverrangeindicationLCDdisplays‘OL’

LowBatteryIndicationBatteryiconappearswhenbatteryvoltageisbelowoperatinglevel

Measurementrate2.5readingspersecond,nominal

MeasurementRepeatability±2%

MAXindicationDisplayshighestreading

Temperaturecoefficient±0.1%peroC

PhotodetectorSiliconphoto‐diodewithspectralresponsefilter

SensorCalibrationCalibratedtostandardincandescentlamp;colortemperature2856k

SpectralresponseCIEphotopic(CIEhumaneyeresponsecurve)

Powersupply9Vbattery

AutoPowerOffMeterautomaticallyswitchesoffafter17minutesofinactivity

OperatingconditionsTemperature:0to40oC(32to104oF);Humidity:<80%RH

StorageconditionsTemperature:‐10to60oC(14to140oF);Humidity:<80%RH

Dimensions157(H)x54(W)x34(D)mm(6.2x2.1x1.3")

Weight170g(6oz.)



ElectricalSpecifications

RangesandResolutionAccuracy

LUX±(5%reading+10digits(<10000LUX/fc)

±(10%reading+10digits(>10000LUX/fc)

Notethatreadingsover1999willshowthex10orx100multiplier.

Inthesecases,multiplythedisplayedvaluebythemultiplierto

obtainthecorrectreading.

200.0,2000,20000,40000

Footcandles(Fc)

20.0,200.0,2000,4000



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

www.extech.com

Shop for Extech products at: 1.888.610.7664

ShopExtech.com

6LT10‐en‐GB_v1.14/15

Appendices

TypicalLightLevels

Lux Foot

Candles

Lux Foot

Candles

Factories

Homes

20-75 2-7 Emergency Stairs, Warehouse

100-150 10-15

Washing

75-150 7-15 Exit/Entrance Passages

150-200 15-20

Recreational Activities

150-300 15-30 Packing Wor

200-300 20-30

Drawing Room, Table

300-750 30-75 Visual Work: Production

Line

300-500 30-50

Makeup

750-1,500 75-150 Typesetting: Inspection Work

500-1,500 50-150

Reading, Study

1,500-3,000 150-300 Electronic Assembly, Drafting

1,000-2,000

100-200

Sewing

Office

Restaurant

75-100 7-10 Indoor Emergency Stairs

75-150 7-15

Corridor Stairs

100-200 10-20 Corridor Stairs

150-300 15-30

Entrance, Wash Room

200-750 20-75 Conference,

Reception Room

300-750 30-75

Cooking Room, Dining Table

750-1,500 75-150 Clerical Work

750-1,500 75-150

Show Window

1,500-2,000 150-2000 Typing, Drafting

Stores

Hospitals

75-150 7-15 Indoors

30-75 3-7

Emergency Stairs

150-200 15-20 Corridor/Stairs

75-100 7-10

Stairs

200-300 20-30 Reception

100-150 10-15

Sick Room, Warehouse

300-500 30-50 Display Stand

150-200 15-20

Waiting Room

500-750 50-75 Elevator

200-750 20-75

Medical Exam Room

750-1,500 75-150 Show Window,

Packing Table

750-1,500 75-150

Operating Room

1,500-3,000 150-300 Storefront, Show Window

5,000-10,000

500-1000

Eye Inspection

SpectralSensitivity

400 450 500 550 600 650 700

Wavelength (nm)

- - - - - Light Meter Response _____ CIE Response

0.8

0.6

0.4

0.2

Shop for Extech products at: 1.888.610.7664

ShopExtech.com

Indice

Altri manuali Extech Instruments Strumento di misura

Extech Instruments

Extech Instruments SDL100 Manuale utente

Extech Instruments

Extech Instruments 45320 Manuale utente

Extech Instruments

Extech Instruments 407119 Manuale utente

Extech Instruments

Extech Instruments AM300 Manuale utente

Extech Instruments

Extech Instruments LT45 Manuale utente

Extech Instruments

Extech Instruments SDL300-NIST Manuale utente

Extech Instruments

Extech Instruments MO290 Manuale utente

Extech Instruments

Extech Instruments 407510 Manuale utente

Extech Instruments

Extech Instruments MultiScope 381270 Manuale utente

Extech Instruments

Extech Instruments MO257 Manuale utente

Extech Instruments

Extech Instruments MO230 Manuale utente

Extech Instruments

Extech Instruments EA80 Manuale utente

Extech Instruments

Extech Instruments 34135-A Manuale utente

Extech Instruments

Extech Instruments VB500 Manuale utente

Extech Instruments

Extech Instruments MZ13604 Manuale utente

Extech Instruments

Extech Instruments UV505 Manuale utente

Extech Instruments

Extech Instruments MW12 Manuale utente

Extech Instruments

Extech Instruments SL510 Manuale utente

Extech Instruments

Extech Instruments NON-DISPLAY PORTABLE Manuale utente

Extech Instruments

Extech Instruments AN100 Manuale utente

Extech Instruments

Extech Instruments PQ3350 Manuale utente

Extech Instruments

Extech Instruments BT100 Manuale utente

Extech Instruments

Extech Instruments Oyster-16 Manuale utente

Extech Instruments

Extech Instruments 407412 Manuale utente

Manuali Strumento di misura popolari di altre marche

Suaoki

Suaoki D40 Manuale utente

Elster

Elster BK-G1.6 Manuale utente

Endress+Hauser

Endress+Hauser Deltabar FMD71 Manuale

Duratool

Duratool D03128 Manuale utente

Vega

Vega VEGAPULS 65 Manuale utente

Tonghui

Tonghui TH2618B Manuale utente

Tenmars

Tenmars TM-801 Manuale utente

MSR

MSR 145 Manuale utente

TPS

TPS WP-82 Manuale utente

ELMETRON

ELMETRON CP-511 Manuale utente

PCB Piezotronics

PCB Piezotronics 003C30 Manuale utente

Tenma

Tenma 72-10465 Manuale utente

Endress+Hauser

Endress+Hauser Proline Promag 50 Specifiche tecniche

Siemens

Siemens SITRANS F Coriolis FCT030 Manuale elenco delle parti

KLINGER

KLINGER CMF V Series Manuale utente

EXFO

EXFO FTB-2 Manuale operativo e di manutenzione

Keysight

Keysight M8290A Manuale utente

ADTEK

ADTEK MW-5 Manuale utente