optek - Model AF26 -Dual Channel VIS/NIR Absorption Sensor

The AF26 is a high precision dual channel sensor which is designed for inline operation. The dual channel AF26 sensor provides accurate absorption measurements with remarkable repeatability, linearity and resolution. The AF26 sensor’s output can be correlated to almost any color scale including APHA and Hazen. Selected combinations of optical filters make it possible to focus on specific wavelengths ensuring suitable adaptation to the application. Typically, one of the two measured wavelengths is used as a reference channel, where it can be used to prevent the influence of particulate, gas bubbles and lamp aging. Additionally, NIST-traceable calibration accessories provide absolute measurement confidence.

• Color scales:
  • APHA / HAZEN / Pt/Co color
  • AOCS (Method Cc 13b-45) color
  • ASTM (D1500) color
  • EBC color
  • ASBC color
  • Gardner (ASTM D1544) color
  • ICUMSA color
  • KLETT color
  • Reference Base Unit (RBU, color)
  • Saybolt (ASTM D 156, D 6045) color
• Concentration control of
  • chlorine and chlorine dioxide (gas and liquid)
  • of metal ions (Iron, Chromium, Copper, Nickel, Cobalt, Manganese, etc. ) in Plating industry
• Drinking water treatment (APHA color)
• Colored waste water monitoring (e.g., Textile industry)

• Configurable dual channel color sensor with 2 wavelengths
• High performance sensor for broad range of applications
• Available for installations in hazardous areas
• NIST-traceable validation accessories
• Different wavelength modules available

• Flexibility to measure a broad range of products for turbidity compensated color measurement
• Measurement can be expressed in any color scale, e.g., APHA. Saybolt ASTM, ICUMSA, EBC, Gardner etc.
• Complies with lECEx. ATEX FM
• Easy on-site / on-demand verification
• Application optimized configuration