For greater flexibility during absorbance measurements in fluids, this fibre optic probe features a variable and adjustable path length.

 

The gap between the fibre and the diffuser can be set anywhere between 0.25 and 10mm (pathlength of 0.5-20mm), which enables ultimate flexibility to easily and quickly optimise the setup in online and inline absorbance measurements in fluids. 

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When dipping or permanently mounting the probe end into the fluid, absorbance can be measured. A standard SMA905 connector is used to couple light into a fibre bundle, which typically is a bundle consisting of six fibres (other configurations available upon request). The light is transmitted to the probe end, where it crosses a predetermined gap and is then reflected against a diffuse white reflective material (or mirror) back into the receiving read fibre, which is coupled to a spectrometer on the second leg of the probe.

The read fibre is placed in the centre of the illumination fibre bundle to provide the best collection efficiency for the probe.

 

Both bundles are housed in flexible stainless steel jacketing and the probe tip is also made of stainless steel.  At the mid point of the assembly, a ferrule is used to split the fibres into their respective legs (illumination and read) which are terminated in SMA905 connectors.

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All our fibre optic probes can be customised to meet your specific requirements.