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AF26-EX Dual Channel Absorption Sensor |
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The model AF26-EX is a precise, dual channel absorption
sensor designed especially for hazardous environments.
It accurately measures color or color changes and can be
used for inline applications in a variety of industrial processes. |
The modular sensor consists of a flameproof stainless steel
lamp housing and an intrinsically safe detector module.
The appropriate converter can be located either in a safe
area or in a flameproof or pressurized enclosure directly in
the hazardous location. |
The AF26-EX uses light in the range from 385 to 1000 nm at
selected wavelengths. A precisely defined, constant light
beam penetrates the process medium. |
The light beam is devided by a beam splitter into two beams
and passes through the specific interference filters.
The attenuation of the light intensity, caused by absorption
and/or scattering of the dissolved and undissolved substances,
is detected by two photo diodes. This unique dual channel
technology compensates for turbidity in the process stream
and even the smallest presence of color can be measured. |
The special optical sapphire window provides superior
resistance to all abrasive and corrosive media.
The AF26-EX is available with a broad variety of line sizes,
process connections and wetted materials.
NIST-traceable validation accessories assure absolute
measurement confidence. |
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