Complete set of datasheets - optek-Danulat - #9

Dual Channel Absorption Sensor inline control

Inline real time process monitoring

Accurate measurement of color or color changes

■ Turbidity independent dual channel absorption technology

■ Extremely low maintenance

■ CIP/SIP-compatible

■ Broad variety of line sizes,

process connections and wetted materials

NIST-traceable validation accessories

The model AF26 is a dual channel absorption sensor designed for inline applications. It accurately measures color or color changes and can be used in a variety of industrial processes, from sanitary CIP/SIP applications to high-pressure, high-temperature industrial applications.

The AF26 uses light in the range from 385 to 1100 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 at application dependent wavelengths.

The attenuation ofthe light intensity, caused by absorption and/or scattering of the dissolved and undissolved substances, is detected by two hermetically sealed silicon photo diodes. This dual channel absorption technology compensates for turbidity in the process streams and even the smallest presence of color can be measured.

The special optical window is made from a single crystal sapphire, providing superior resistance to all abrasive and corrosive media. The AF26 is available with a broad variety of line sizes, process connections and wetted materials. NIST-traceable validation accessories assure absolute measurement confidence. Options for hazardous location are also available.

1 Sensor body

2 Windows

5 Detector 1

6 Filter 1

7 Detector 2

3

5

4

3 Beam splitter 8 Optics module

8

9

9 Lamp

4 Filter 2