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optek Spectral Range of Measurement |
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optek process photometers use three superior grade light sources in conjunction with precision filters and photo components. A wide selection of optical components allows optek to configure a process analyzer to measure within a specific portion of the electromagnetic spectrum. This enables a diverse range of process measurement applications.
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| optek Light Sources: |
UV (Ultraviolet) - Low Pressure Mercury
Spectral Range: 245 - 365 nanometers
UV light is well suited for accurate concentration measurements of proteins, trace aromatics, hydrocarbons, chlorine, ozone, and total organic carbon.
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VIS/NIR (Visible/Near Infrared) - Full-Spectrum Tungsten
Spectral Range: 380 - 1100 nanometers
The VIS/NIR tungsten lamp is often used for scattered light applications such as turbidity (suspended solids), particle concentration and detecting immiscible liquids in process stream.
The full-spectrum lamp can be adapted with VIS or NIR filters for specific applications:
- VIS Filter - Visible light can measure color and color intensity differences barely detectable by the eye. VIS light can be also be used to detect and measure the presence of various metals, and substance such as Chlorine dioxide.
- NIR Filter - NIR light is useful in making measurements that are insensitive to color and color changes. This includes applications such as suspended solids or phase separation.
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NIR (Near Infrared) - Hybrid LED
Spectral Range: 840 - 910 nanometers
This lamp is used in the ASD Series probes. These probes are used for color independent concentration measurements, including turbidity and biomass concentration.
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