â·ÃÊͺ¶ÒÁÃÒ¤Ò à¤Ã×èͧÇÑ´ÊÕ AMT500: Colorimeter (Color Difference Meter)Test range: L:0~100; a: -128~127; b: -128~127Test time: About 3 seconds à¤Ã×èͧÇÑ´ÊÕ AMT500 Colorimeter (Color Difference Meter) Features: Easy Operation make you use it easily Widely applied to quality control of plastic and printing industries’ Display directly color difference by △E*ab、CIE_L*a*b、△L*a*b、CIE_L*c*h Standard deviation within △E*ab0.2 (Test condition: choose average values by 12 pcs white tabula) Measure any color of smooth surface It can be connected with computer to do the inspection by soft ware with USB expansion interface. Specifications: Test accuracy: Within 0.2△E*ab Display: △E*ab; CIE_Lab; △L; △a; △b; CIE_Lch Test range: L:0~100; a: -128~127; b: -128~127Test time: About 3 seconds Test aperture: Ф8mm Automatic shutdown after 5 minutes waiting Light source: C light source Sensor Correct: silicon photodiode (seed array) Power: DC/5V (1.5A), two 1.5V (AAA) batteries Operating environment: 0℃~+40℃; RH: less than 85% Size: 170×50×48.8mm Weight: 204g