Konica Minolta CR-300 shown with Konica Minolta DP-301 |
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Konica Minolta CR-300 Chroma Meter with DP-301 Data Processor
Konica Minolta CR series Chroma Meters are compact,
lightweight, portable tristimulus colorimeters for measuring reflected
color and color difference in a wide range of industrial fields. Five
different CR-300 series models are available to meet the needs of various
applications. All CR-300 series models offer improved
inter-instrument agreement to allow multiple units to be used for color
control both within a company and between companies. The
Chroma Meter CR-300 offers 8mm measuring area and diffuse illumination/0°
viewing geometry for a wide variety of applications.
The measuring head of the CR-300 uses
diffuse illumination/0° viewing geometry (specular component included) to
provide measurements of a wide variety of surfaces which correlate well
with color as seen under diffuse lighting conditions. A pulsed xenon
arc (PXA) lamp inside a mixing chamber provides diffuse, uniform lighting
over the 8mm-diameter specimen area. Only the light reflected
perpendicular to the specimen surface is collected by the optical-fiber
cable for color analysis.
Color-Control
Applications:
- Paint
Industry: Paints for houses,
automobiles, etc.; metal plating and coloring
- Rubber/Plastic
Industry: Raw materials, molded
products
- Printing
Industry: Printed materials,
such as catalogs, posters, etc.
- Textile/dyeing industry: Color of dyed cloth
of fibers, printed fabrics
- Food
industry: Processed foods;
determining maturity levels of raw products
- Ceramic
Industry: Tiles, porcelain,
pottery, glass, etc.
| CR-300
Specifications |
| Receptors |
6
silicon photocells (3 to measure source illumination, 3 to
measure reflected light) filtered to detect primary stimulus
values for red, green, and blue light |
| Spectral
response |
Closely
matches CIE 1931 Standard Observer curves |
| Light
Source |
Pulsed
xenon lamp |
Illumination/measurement
system
|
Wide-area
illumination/0° viewing angle
(specular component included) |
| Measuring
area |
50mm |
| Short-term
repeatability |
Chromaticity
(x, y): Within 0.0002
Color difference Δ(E* ab): Standard deviation within 0.07
(Measurement conditions: White calibration plate measured 30
times at 10-second intervals) |
| Inter-instrument
agreement |
ΔE*ab
within 0.8
(Measurement conditions : Comparison of average measured
values of 13 BCRA Series || color tiles to values measured
with master body) |
| DP-301
Specifications |
| Measurement
modes |
Absolute
and difference |
| Chromatic
systems |
absolute:
CIE Yxy, L*a*b*, L*C*h,
and XYZ; Hunter Lab Difference: Δ(Yxy),
Δ(L*a*b*)/ ΔE*ab, Δ(L*C*h*)/Δ E*ab,
and Hunter Δ(Lab)/ΔE |
| Illuminant
conditions |
CIE
Illuminant C or D65 |
| Calibration
channels |
20;
calibration channel 00 for primary standard(white calibration
plate), channels 01 to19 for user-selected reference colors |
| Calibration
functions |
Multi-calibration:
data in all calibration channels utilized to determine
measured values
Manual: Data in a single calibration channel selected by user
utilized to determine measured values |
| Target-color
channels |
20;
set by measurement or keyboard input |
| Data
memory |
Space
for 300 sets of measurement data; space divisible into
20 pages;
data remains in memory even if POWER switch is set to OFF |
| Display
range |
0.01
to 160% reflectance |
| Display |
16
characters x 2 lines ;
dot-matrix LCD with adjustable
viewing angle |
| Printer |
24-character
thermal-dot |
| Statistical
calculations |
Maximum,
minimum, mean, and standard deviation |
| Calendar/clock/timer |
Data
and time of first and last measurements on each memory page
stored and printed out; timer intervals user-selectable from 3
sec. to 99 min. |
| Data
input/output |
RS-232C
format, ASCII code; transmission rate: 4800 baud (selctable by
service personnel: from 600 to 9600 baud for data output or
from 600 to 4800 baud for data input); output voltage: CMOS
5V; RS-232C terminal uses DIN 8-pin connector |
| Other |
High-repeatability
multiple-measurement-averaging mode; remote-control socket; E
ALARM output socket |
| Power
source |
6
AA-size alkaline-manganese or carbon-zinc (1.5V) or
nickel-cadmium (1.2V) batteries, or included AC adapter
connected to AC power source; memory equipped with built-in
Ni-Cd battery |
| Battery
performance |
Alkaline-manganese:
690 measurements; Carbon-zinc: 280 measurements;
Nickel-cadmium: 600 measurements(Measurement conditions:
Primary standard measured in ABS. measuring mode at 10-second
intervals with printout in one color space after each
measurement) |
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