Colorimeter Manual
Product Details:

Our products are widely used in plastics and printing industries, mainly based on CIE color space Lab, Lch theory, measurement shows that the measured sample and the sample color values of △ E and △ Lab.

1, technical parameters
Measurement accuracy within 0.2 △ E * ab
Display △ E * ab, CIE_Lab, △ Lab, CIE_Lch
Test Range L: 0 ~ 100 a: -128 ~ 127 b: -128 ~ 127
Measurement time is about 3 seconds
Measurement time interval 2 seconds
Measuring 8mm Aperture
Storage function automatically stores a set of standard colors (not connected to PC)
Stand 5 minutes automatic shutdown, automatic shutdown
Measuring light source C
Sensor Calibration silicon photodiode (array)
Power DC/5V (1.5A), two 1.5V - 5 batteries
Instrument Size 170 * 50 * 48.8mm
Weight 203.6g (without batteries)
Standard Accessories Manual / soft cover / 1.5V Battery 2 / 5V external power supply 1 / USB 1 / Disc 1

2, the main features of
An automatic comparison between the model and color of the seized goods, differences in the output CIE_Lab three sets of data and colorimetric after △ E, △ L, △ a, △ b four color data for color reference for the program.
2, apparatus for the portable. There are two kinds of batteries and external power supply power supply, convenient and practical.
3, equipped with USB extension port may be connected to the computer display. Is easy to save data, print the report.

Third, the analysis method
△ E the size of the total color difference △ L +, said partial white, △ L-said that partial black △ a + reddish, △ a-Green said the partial
△ b + that yellowish, △ b-expressed bluish
Range of color difference (tolerance)
0 - 0.25 △ E is very small or no; perfectly matched
0.25 - 0.5 △ E minor; acceptable match
0.5 -1.0 △ E minor to moderate; in a number of applications accepted
1.0 -2.0 △ E medium; acceptable in a particular application
2.0 -4.0 △ E there are gaps; acceptable in a particular application
More than 4.0 △ E is very large; unacceptable in most applications,

4, CIE color space plot and the related formulas
Color-difference formula:
△ Eab = [(△ L *) 2 + (△ a *) 2 + (△ b) 2] 1 / 2
△ L = L sample-L standard (lightness difference)
△ a = a sample-a standard (red / green differences)
△ b = b sample-b standard (yellow / blue differences)
 
5, with a computer connected using the
1, the measurement data stored in the computer at any time adjustable out a comparative analysis of historical data.
2, through the software displays the curve of a batch measurement charts and related data, timely monitoring of product color fluctuations in the situation.
3 pairs of charts and data to customize the edited printout.