In many production processes of the chemical, petrochemical and
pharmaceutical industry, color is an important parameter for the quality of
the product. Might be the exact color value, might be the requirement of an
ideally colorless product. Examples are decoloration processes as in phthalic
anhydride, paraffin or naphta or color measurement in oils and fuels.
Moreover, color or absorption measurement can be used to determine the
concentration of specific substances by their characteristic absorption,
e.g. in copper solutions for plating processes or ozone concentration in
air.
With 60 years of experience in process measurement, SIGRIST now offers
the ColorPlus as the state-of-the-art in-line color monitor. The well-proven
dual-bean technology enables a rather accurate and stable measurement. Using
up to three different wavelengths out of a range from 254 nm UV through the
visible to 700 nm red light all standard color and UV absorption can be
covered. Turbidity compensation is available as an option. The range is from
lowest colors (<1 Hazen or 30 Saybolt) up to 6000 E/m. For the flow cell we
can offer customer specific designs out of a variety of materials as
stainless steel, PVDF, Hastelloy, etc. also including special options as
heating or cooling jackets. The ColorPlus comes in a compact and rugged
stainless steel housing, optionally available in an ATEX version.
Recent installations have been realized for color measurement in
Hydrocyanic acid (0..600 Hazen), color in phthalic anhydride (0..20 Hazen),
color in acrylic acid (0..10 Hazen), concentration of copper sulphate
solution for electroplating (0..120 g/l).
Products: ColorPlus in-line |
ColorPlus Ex in-line