elrepho - MX Chile

071/070 1.0 e
Lorentzen & Wettre
Easy to operate due to measurement table and
optimized measurement program for routine testing
One calibration for all filter conditions
Different apertures include for measurements on
small surfaces
Fast measurement sequences with
different UV settings
Residual ink evaluation with ERIC and INGEDE method
Complies with ISO 2469, diffuse illumination and 0
degrees observation
Measures whiteness and brightness at D65 and
Elrepho is the paper industry’s own spectrophotometer. It measures colour, brightness, opacity
and whiteness of paper, paperboard, tissue, pulp, coating inks and fillers. The visual appearance
for a printed product is of crucial importance and is expensive to achieve. Elrepho automatically
measures according to the conditions specified by the user, e.g. D65 illuminant, C illuminant, or a
420 nm cut-off filter.
Elrepho is designed to make laboratory work
easier. A sample is placed on the measurement
table, and then automatically positioned
against the instrument’s measurement aperture.
For opacity measurements, the black cavity
is controlled automatically. In fact, the
measurement software controls everything.
L&W Colour-Brightness software, is
optimized for shift testing and has complete
user interfaces for identification, measurement,
and reporting. Grades with limit values and
target values can be set as required. The
software reports most optical characteristics.
Calculations can also be implemented to meet
the user’s needs.
Simple measurement sequences
The software automatically measures according
to the conditions specified by the user, e.g. D65
illuminant, C illuminant, or a 420 nm cut-off
filter. Measurement results can be copied to other
programs by a simple copy and paste function.
Alternatively, data can be saved in an Excelcompatible file. Sample identities can be retrieved
from (and measurement results sent to) other
databases using standard commands and tools.
Measures effective residual ink concentration,
”ERIC”, of recycled pulp and paper
Residual ink measurements of recycled pulp
and paper are made on a sheet and opaque pad
according to the ISO 22 754 and TAPPI T 567
standards respectively. This measurement can
alternatively be made on an opaque pad only. This
latter method is not standardized. An alternative
is to measure the ink elimination between two
process stages with the INGEDE method.
Graphic presentations
The program features a number of ways to
display the results graphically. The trend diagram
is used to monitor the production over a longer
period, while the L*a*b* plot shows the colour
coordinates for a series of samples. The reflectance
curve provides important information about
colour dyeing and the fluorescence of the sample.
Traceable calibration
Elrepho comes with traceable calibration
in accordance with the ISO’s hierarchy for
photometric calibration and UV calibration
at level C and D65. Working standards and a
delivery certificate are included.
The software has an easy function for
checking the calibration, or making a new
calibration, when necessary. A large number of
reference and working standards, with target
values can be stored.
A complete system
The delivery includes Elrepho spectrophotometer, L&W Colour-Brightness software,
PC, printer and the accessories necessary for
checking the calibration. Elrepho comes in a
standard version with a measurement table for
fast sample handling, but can also be supplied
without the measurement table.
Elrepho – Code 071 (with measurement table), Code 071E (with measurement table, with ERIC)
Code 070 (without measurement table, without ERIC), Code 070E (without measurement table, with ERIC)
L&W Colour-Brightness software, PC, laser printer, working standards, apertures, black cavity, cables
Same as above, without PC/printer
Photometric range
0–200 %
< 0.01 ΔE CIELAB units on white ceramic tiles
< 0.25 ΔE CIELAB units (average) on NCS colour samples
Spectral range
360–700 nm
Reporting range
400–700 nm adjustable to 360–700 nm
Measurement geometry
d/0º, according to ISO 2469
Measuring principle
SP 2000 dual-beam monochromator with 2 × 256 diodes in 2 nm intervals
Standard 34 mm. Alternatively 9 mm or 6.6 mm. Automatic focus on the test area with
30 mm, 5 mm or 2.5 mm diameter. Optional 18 mm aperture with 16 mm test area diameter
10 nm
Light source
Pulsed xenon lamp, D 65 – filtered
Measurement time
4–20 s, depending on the type of measurement
395 nm and 420 nm (UV cut-off ), automatically selected from the program
UV level
D65 and C, automatically controlled from the program after calibration
Operating system
Microsoft Windows
User program
L&W Colour-Brightness measurement program specially developed for Elrepho
Overview, control, identification, measurement, reporting, data output
Help functions
Calibration, calibration control, grade settings, calculated properties
D65/10°, C/2°, A/10°, D50/2°, T11/10°
Commands for photometric and UV calibration. Calibrations and working standards with target
values can be stored
Data output
L&W Autoline and Excel-compatible
Tabular reports
Test report
Graphical reports
Reflectance factor, opacity, scattering, absorption, trend, L*-a*-b*
X, Y, Z, L*, a*, b*, x, y, Rx, Ry, Rz, CIE Whiteness/Tint-D65 resp. C, Fluorescence, ISO Brightness, D65Brightness, Yellowness, Opacity, Transparency, K/N-value, IE, Residual ink, DW, pe, s, k, sR457, kR457,
Metamerism, ΔE and others
1.2 GHz or higher, Windows operating system, 2000, XP or later version, 17-in screen, serial port
Laser or ink-jet printer
Installation requirements
400 W
Instrument air
> 0,5 MPa (70 psi) (not 070)
Air consumption
0.2 m³/h (0.1 ft³/min) NTP (not 070)
Net weight
0.4 × 0.5 × 0.6 m
16 × 20 × 24 in
0.3 × 0.3 × 0.3 m
12 × 12 × 12 in
0.6 × 0.6 × 0.5 m
24 × 24 × 20 in
26 kg
57 lb
41 kg
90 lb
0.4 m³
14 ft³
0.2 m³
7 ft³
0.4 m³
14 ft³
Gross weight
50 kg
110 lb
61 kg
134 lb
Applicable standards
PAPTAC E1, E2, DIN 53 145/53 146/53 147/54 500,
ISO 2469/2470/2471/5631/9416/11475/11476/
22754/22891/, SCAN G5/P3/P8/P66/P71/P 72,
TAPPI T 519/525/527/560/567
Lorentzen & Wettre
Download PDF