The transmission-type immersion probe with variable optical path can be used for online measurement of liquid absorption rate. The optical path of this probe, with an outer diameter of 1/2 inch, can be adjusted by the user
It is set within the range of 0.5 mm to 20 mm, making it extremely versatile for liquids with high or low absorption rates. Simply immerse the probe tip
Once immersed in the liquid, measurements can be taken. The light from the light source can be coupled into a fiber bundle consisting of six optical fibers through a standard SMA905 connector
Then, it is transmitted all the way to the probe tip, and reflected by a diffusely reflective white material through a user-defined physical gap ranging from 0.25 to 10 mm
The reflected light enters the seventh detection fiber, which transmits the detected data into the spectrometer through an SMA905 connector. in order to
To maximize the detection efficiency of the probe, the detection fiber at the end of the probe is placed in the middle of the illumination fiber. All fiber bundles are installed in a
Inside the flexible stainless steel casing, the fiber optic bundle is divided into two parts within the metal section in the middle of the probe. The two one-meter-long fiber optic cables are respectively connected to the spectrometer and the light source
Technical data
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Fiber optic bundle
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6Root illumination fiber，1 detection fiber , All have a core diameter of 200 microns , Standard length 2 meters
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wavelength range
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200-800 nm (UV/VIS) or 350-2500 nm (VIS/NIR) ) or 250-2500 (UV/VIS/NIR)
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fiber optic connector
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SMA905 connectors (2 pieces)
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optical path
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Physical gap of 0.25 - 10 mm, corresponding optical path length of 0.5 - 20 mm
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Probe tip
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316 stainless steel or PEEK cylindrical shape, 140-160 mm (length) x 12.7 mm (1/2 inch diameter), waterproof. Optional - PK (PEEK material) or - HY (Hastelloy C276 material).
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Fiber optic conduit
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The optical fiber is protected by a silicone inner tube and a flexible chrome-plated brass outer tube, which also reduces the pressure on the fiber. The outer diameter of the sheath is 5.0 mm, and a waterproof, metal-reinforced silicone sheath (-MS) is available as an option.
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Operating Temperature
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-30°C to 100°C. (-HT high temperature type can reach 200°C)
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stress
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Probe tip 10 bar @ 25 oC
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bend radius
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Minimum bending radius: short-term (a few seconds) 20mm, long-term 120mm
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