X-Rite 939, Руководство оператора

Страница: 82 / 108

I N S T R U M E N T O P E R A T I O N
5-25
Opacity Measurement
The Opacity function displays the percent opacity of a drawn
down sample on an opacity card. Color difference data is also
displayed if difference is activated in the configuration.
To perform an opacity measurement:
1.
Select the project location and standard location (if
required) as discussed in the QA function.
2.
Close the instrument to the shoe, then release to activate
the opacity measurement sequence.
P r o j 1 : P R O J E C T A
S t d 1 : S T A N D A R D A
M e a s u r e o v e r B L A C K
L*a*b*
D65/10
......
....
3.
Measure the sample over the black portion of the opacity
card. Release the instrument after data is displayed.
P r o j 1 : P R O J E C T A
S t d 1 : S T A N D A R D A
M e a s u r e o v e r W H I T E _ _
L*a*b*
D65/10
......
....
L* 81.15
a* +4.50
b*+81.00
4.
Measure the sample over the white portion of the opacity
card. Release the instrument after data is displayed.
P r o j 1 : P R O J E C T A
S t d 1 : S T A N D A R D A
M e a s u r e w h i t e B A C K _ _
L*a*b*
D65/10
......
....
L* 81.76
a* +6.17
b*+82.03
5.
Measure the white backing of the opacity card. Release the
instrument after the opacity value is displayed.
P r o j 1 : P R O J E C T A
S t d 1 : S T A N D A R D A
S a m p l e : # 1 8 : 5 0
L*a*b*
D65/10
......
....
∆
L* +1.00
Opacity
∆
a* —0.26
97.93%
∆
b* —0.79
@
100% →
∆
E* 1.30
NOTE: . When data is stored, only one illum/obs is saved with the data.
Color at 100%
Symbol indicates
color at 100%
data type.