The model AF16-EX-N is a precise, single channel NIR absorption sensor designed especially for hazardous environments. The AF16-EX-N is 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 AF16-EX-N uses the light in the near infrared range (NIR) from 730 to 970 nm and measures concentration or turbidity with great accuracy and repeatability. A precisely defined, constant light beam penetrates the process medium.
The attenuation of the light intensity, caused by absorption and/or scattering by dissolved and undissolved substances in the medium, is detected by a hermetically sealed photo diode.
Optical path lengths (OPL) are available from 1 to 1000 mm for process versatility. The special optical sapphire window provides superior resistance to all abrasive and corrosive media.
The AF16-EX-N is available with a broad variety of line sizes, process connections and wetted materials. NIST-traceable validation accessories assures absolute measurement confidence.
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