LT45-EU-EN v1.4 9/13
2
Introduction
Congratulationson ofyourpurchase theExtechLT45LEDLightMeterthatmeasureslightfromLED
lampsinadditionto fluorescent, metalhalide,high sources.‐ pressure sodiumandincandescent
TheLT45 red,iscapableof ofmeasuringtheillumination white, yellow,green,blue,andpurple
LEDsupto400,000Lux(40,000Fc).
The programmedLT45canalsocalculate lightluminousintensity(CD)using a distance‐to‐the‐ value
bytheuserinmetersorfeetunits.
The store forLT45can upto99 readings laterrecallandincludesOverloadindication,Battery
statusicon,Datahold, tracking,Maximum/Average/Minimum(MAX/MIN) push‐button Zero
calibrationadjustment,AutoPoweroff(withdisablefunction),andautorangingfeatures.
This calibratedinstrumentisshipped testedfully and and,withproperuse,willprovideyearsof
reliableservice. forPleasevisitour website (www.extech.com)tocheck thelatestversionofthis
UserGuide,ProductUpdates, Customerand Support.
Features
Overload ‐ Indication: LCD screen will show “OL” at the upper left hand corner
Battery strength status indication
Display Update Rate: 2.5 times per second
SpectralresponsenearCIEluminousspectralefficiencyratings
Cosine Angle corrected
Conforms to JIS C 1609:1993 and CNS 5119 general class A Specifications
Measures the intensity of illumination of white, red, yellow, green, blue, and purple LED
light lightandallvisible inLuxorfoot‐candles
Calculates Luminous Intensity (CD)
Data hold freezes displayed reading
Maximum/Average/Minimum Memory Hold
Zero adjustment
Auto power off with disablefunction
Automatic range adjust optimizes accuracy and resolution
Manually store/recall up to 99 readings
Complete with light sensor, protective sensor cover, and coiled cable expandable to 59”
(1.5m),9Vbattery,andhardshellcase
