Turbidity Sensor

Optek-Danulat TF16

Core Optical Specifications
• Measurement Principle: Dual-channel scattered light (forward scattering) paired with a direct reference beam.
• Scattering Angle: 11°.
• Detectors: 8 hermetically encapsulated silicon photodiodes for scattered light, and 1 direct-beam photodiode for reference and high-concentration tracking.
• Wavelength Range: 730 – 970 nm (Near-Infrared / NIR).
• Light Source: Incandescent tungsten lamp (Nominal 5.0 V DC).
• Measurement Range: Typically 0 – 0.5 ppm to 500 ppm (equivalent to 0–200 FTU / 0–50 EBC depending on path length).
• Resolution: < ±0.05%
• Repeatability: < ±0.5%

Material & Process Limits
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• Sensor Windows: Manufactured from single-crystal sapphire for maximum resistance to chemical corrosion and abrasion.
• Housing Material: Stainless steel (standard 1.4571 / 316Ti).
• Line Sizes Supported: Accommodates process pipes from DN 6 to DN 200 (1/4" to 8") via customized flow cells.
• Process Temperature:
• Standard version: Permanent 0°C to +120°C (with short daily peaks up to 150°C).
• High-temperature (HT) version: -20°C to +240°C.
• Process Pressure: Supports application environments from 10 mbar up to 325 bar depending on the specific line fitting and configuration.

Good working condition. Please check out our other listings as well.