Illuminating/viewing system

The normal head of the CR-310 averages the measurement over a relatively large area.  This is especially useful when measuring textured samples, such as carpet or cloth, which might result in measurement errors if a smaller specimen area were used.  A pulsed xenon arc(PXA) lamp inside a mixing chamber provides diffuse, uniform lighting over the 50mm diameter area.  Only the light reflected perpendicular to the specimen surface is collected by the optical-fiber cable for color-analysis. 

·                      Since measurements made with this system are greatly influenced by specular reflection, this system should not be used for measuring glossy surfaces.

Color-Control Applications

Textile/dyeing industry:

Dyed cloth or fibers; rugs, carpets, drapes, etc.

Agriculture :

Color analysis of soil.

Food industry

Processed foods; determining maturity level of raw products.

Data Processor(DP-301) Features

Full portability for On-the-Go Color Control

Each CR-300 series Chroma Meter consists of a lightweight, handheld measuring head and a compact, battery-operable data-processor.  The whole system is fully portable and can be used wherever the measurement subject is, indoors or outdoors, for on-the-spot color control

Variety of Data-Processing Functions

The data processor of the CR-300 series Chroma Meters is an all-in-one unit with an LCD display, thermal printer, and RS-232C, remote-control, and Δ E*ab alarm terminals.

Data can be displayed, printed out, or output in a variety of color systems.

To provide the highest measurement accuracy, the data processor is equipped with a multicalibration function, which utilizes all calibration data in memory (calibration data can be stored in up to 20 memory channels) in calculating the measurement data.  Users can also select a single calibration memory channel if desired.

Other features of the data processor include: Memory space for 300 sets of measurement data; 20 memory channels for target data for color difference measurements; statistical calculations; an interval timer for automatic, timer-controlled measurements; and a Δ E*ab alarm function. 

Measuring Head 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

Δ E*ab within 0.8
(Measurement conditions : Comparison of average measured values of 13 BCRA Series || color tiles to values measured with master body)

Temperature range

Operation: 0° to 40°C (32° to 104°F); Storage: -20 to 40°C(-4 to 104°F)

Humidity range

Less than 85% relative humidity at 35°C/95°F with no condensation

Dimensions

229 x 91 x 60mm
(9 x 3-9/16 x 2-3/8 in.)
Connecting cable: 1300 x 8.5mm  (51-3/16 x 5/18 in.)

Weight

690g(24-3/8oz.)

Accessories Included

Calibration Plate CR-A44;
Case Cr-A64

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)/Δ E

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)

Temperature range

Operation: 0 to 40°C (32 to 104°F)
Storage: -20 to 40°C(-4 to 104°F)

Humidity range

Less than 85% relative humidity at 35°C/95°F with no condensation

Dimensions

50 x 220 x 200mm
(2 x 8 11/16 x 7 7/8 in.)

Weight

1300g (45 7/8 oz.) without batteries

Accessories Included

AC Adapter (AC-A10 worldwide except N. America;
AC-A10N in N. America);
thermal paper (one roll);
DIN 8-pin plug (1); 3.5mm(1/8 in.) subminiature plug(2)