Portable Digital colorimeter - HP-2132

Name:Digital colorimeter

Model:HP-2132

Technical Features:

1.Easy operation make you use it easily

2.Widely applied to quality control of plastic and printing industries.

3.Display directly color difference by ΔE^*ab,ΔL^*a^*b,CIE_L^*a^*b,CIE_L^*c^*h

4.Standards devitation within Eab0.2 (test condition :choose average:values by 12 pcs white tabula)

It can be connected with computer to do the inspection by software with USB expansion interface .Connecting with computer to do the analysis

Skills Indications:

1.Test accuracy Within 0.2 ΔE^*ab

2.Display ΔE^*ab,CIE_lab,ΔLab,CIE_Lch

3.Test swpe: L:0-100 a:-128--127 b: 128127

4.Test time: About 3 seconds Test interval:2 seconds Test aperture: 8 nm

5.Automatic shutdown after 5 minutes waiting

6.Light source:C light source Sensor Correct silicon photodiode carrays

7.Power: DC/5V (1.5A),2 PCS 1.5V(AAA) batteries

8.Size: 171*50*48.8 mm

9.Weight 203.6 g (Exclusive battery)

10.Operated temperature scoope 040(32-104 °f);lower than 85% relative humidity

11.Standard accessories 1 pc manual / soft bag / 9V battery /5V extent power supply / USB connection cable / CD

12.Application Measure any color of smooth surface

CIE color space coordinate chart:

COLOR DIFFERENCE FORMULA

E_ab= [ (ΔL^*)²+ (Δa^*)²+(Δb^{*) 2}]^1/2

L= L_sampleL_standard(lightness difference)

a= a_samplea_standard(red /green difference)

b= b_sampleb_standard(yellow / blue difference)

Working theory:

Compare the color difference between sample and the measured subject .Then output CIE_Lab 3 groups data,and the 4 groups of E,L, a, b data after comparision.

E stands for the total color difference

L + stands for partial white , L stands for partial black (comparing with prototype)

a + stands for partial red , a stands for partial green (comparing with prototype)

b + stands for partial yellow , b stands for partial blue (comparing with prototype)