BENEFITS

• Stable dual-beam design decreases drift due to lamp aging —yielding long-term performance
• Several enclosure options mean low installation costs
• Six filter positions make multi-parameter analysis a possibility
• Optional second channel for lower cost per sample point
• Optional turbidity monitoring
• Compatible with a wide range of flow cells and insertion probes
• Low maintenance
• Long life Tungsten-Halogen Lamp (>4000 hours typical)
• Dual-beam performance lengthens time between required probe cleanings

PRINCIPLE OF OPERATION

Photometry is fundamentally the measurement of the intensity of light. Observable on many levels, changes in light intensity occur as a result of interactions with different materials. Further, the Beer-Lambert Law describes a useful relationship between light and matter. Matter absorbs light in measurable amounts at specific wavelengths. The degree of absorption correlates to the concentration of matter that is exposed to the light across a known optical distance, or pathlength.