Portable color difference meter

1.Widely applied to quality control of plastic and printing industries 2.Easy operation make you use it easily.

profile

In 1931,the CIE(Commission Internationale De L'E'clalrage)setup a series of visible spectrum color space standards.The Basic CIE color space standardS iS CIE_XYZ.lt iS built on standard visual observerson the basis of ability to see,and it reflects the standardS scope of color by eye.Based On CIE_XYZ there are CIE_XvY,CIE_Lab,CIE Lch standard color space,etc.

    At present,the CIE Lab color space iS the most commonly used in the industry.In ClE Lab color space,L value stands for color brightness and a value stands for the Green-0n-red value.and b value stands for the blueonyellow color value.If determine a value of color by only a group Lab,it will be not practical.However,we can determine the differences among them by comparing two groups of Lab values.

                                                      

Technical Features

Easy operation make you use it easilyWidely applied to quality control of plastic and printing industriesDisplay directly color difference by E*abL*a*bCIE_L*a*bCIE_L*C*hStandard deviation withinE*ab0.2(test conditionchoose average values by 12pcs white tabula)It can be connected with computer to do the inspection by software with USB expansion interface Skills Indications

test accuracy	Within 0.2 E*a b
Display	E*abCIE_LabL,a,bCIE_Lch
Test swpe	L:0100  a-128--127  b-128--127
Test time	About 3 seconds
Test Interval	2 seconds
Test aperture	8mm
Automatic shutdown	Automatic shutdown after 5 minutes waiting
Light source	C light source
Sensor	Correct sillicon photodiode carrays
Power	DC5V(1.5A).2pcs 1.5V(AAA)batteries
Size	171*50*48.8mm
Weight	203.6g(Exclusive battery)
Ope rated temperature scope	0-40 132-104'f);lower than 85% relative humidlty
Standard accessories	1 pc nlanual/softwbag/9V battery/5v external power supplyUSB connecting cableCD
Application	Measure any color Of smooth surface

 Workin~theory                          Compa re the color difference between sample and the measured subject thenoutput CIE_Lab 3 groups data,and the 4 groups of E,L,a,b data aftercomparisionE stands for the totaI color difference.L+stands for partial white,L-stands for partial black(cornpa ring with p rototype)a+stands for pa rtial red,astands for partial green(comparing with p rototype)b+stands for pa rtial yellow,b-stands for pa rtial blue(comparing with plrototype)

Color dif SCOpe	Color dif.anylysis
0.0 25AE	very small or novery perfect matching
0.250.5E	smallacceptable matching
0.01.0E	small to mediumacce-ptabIe in some areas
1.02.0E	Mediumacceptable in some a reas
2.04.0E	has dislanceacceptable in special applications
4.0 E	ve ry bignot acceptable in most applications

       

Portable color difference meter