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The sensor uses the light in the near infrared range (NIR) from 730 to 970 nm. 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, is detected by a hermetically sealed photo diode.

The probe comes in six different optical path lengths (OPL) from 1 to 40 mm. The optical filter on the lamp side adapts the wavelength for specific applications and allows color-insensitive concentration measurements in the near infrared range. The AS16-N is available with a 100 mm extended insertion depth for larger vessels.

The seal-less, sapphire window design eliminates crevices and gaps to assure the highest level of sterility, cleanability and sensor integrity. The probe body demonstrates extreme durability and fulfills the CIP/SIP requirements demanded by ultra-sanitary process environments. NIST-traceable validation accessories are available as option for absolute measurement confidence.

AS16-N Features:

• Inline real time process monitoring
• Superior sapphire window with no seals, gaps or crevices
• Concentration measurement insensitive to color changes
• Extremely low maintenance
• CIP/SIP-compatible
• All wetted material and surface finishes are certifiable and traceable
• NIST-Traceable validation options
• Conforms to FDA requirements