INSTRUMENTATION | COLOUR MEASUREMENT
and collected to a fixed level. The probe head is attached to a glass pane on the measuring chamber. The material can then be returned to the process or the system gives a warning message for colour deviation outside the tolerance limit. Germany-headquartered PCE Instruments has
Above: ColorLite’s ColorTube is a two-channel spectro-
photometer offering repeatability of ΔE 0.01 CIELab
cuvettes. At its heart is a 140mm integrating sphere and two spectrometers for the sample and reference channels. The repeatability is ΔE 0.01 CIELab. An integrated gloss trap enables measurements with and without gloss exclusion (SCI and SCE). The colour of sample materials can be highly
temperature dependent, according to ColorLite Managing Director David Pryor, who warns that neglecting this fact can lead to false measurements. This is addressed in the ColorTube through the optional integrated infrared thermometer, “which closes a big gap in the measuring methodology of colours.” Using this option, colour deviations due to thermochromatic effects can be accurately examined and evaluated. The sph9i measuring system is intended for
100% production control and connectivity to dosing and process control systems “with highest flexibility and reliability,” Pryor claims. Granules are conveyed via a bypass into a measuring chamber
extended its already broad range of spectrometers, the most recent of those suitable for compounding operations being the PCE-CSM 20 series and the PCE-CSM 30 series. The PCE-CSM 20, for example, is a handheld unit featuring a single 8mm aperture and including SCI and SCE specular modes. It covers the spectrum from 400nm to 700nm in 10nm increments. Other models in the series have more light sources. The PCE-CSM 30 series spectrometers are table-top units intended for laboratory use. They use both transmission and reflectance to accurately measure liquids, solids, and pastes.
Multiple measurement The latest additions to the Konica-Minolta product line-up are the single aperture CM-25d and dual aperture CM-26d portable spectrophotometers. These two new models will be joined by the CM- 26dG version later this year, which allows simultaneous measurement of both colour and gloss. The new instruments are intended to replace the
existing CM-2500d and CM-2600d spectrophotometers, which are widely used for colour control of automotive and consumer electronics products. The CM-25d model has a fixed 8mm diameter measurement area while the CM-26d and CM-26dG versions can switch between 8mm and 3mm measurement areas.
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PHOTO: COLORLITE
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