To obtain spectral information of diffuse or specular materials, reflection probes are used. The light from a light source is sent through six illumination fibres to the sample and the reflection is measured by a 7th fibre in the centre of the reflection probe tip. The 7th fibre is coupled to a spectrometer configured to the appropriate wavelength range of interest. More illumination fibres can be added to get more energy from the light source and therefore increase the reflection signal level.
For measurements under an angle of 90°, the FCR-90-Option was developed. It’s a special adapter with a mirror positioned at 45° and can be easily mounted on the tip of Avantes standard reflection probes.
The FCR-COL is an adjustable UV/VIS/NIR collimating and focusing lens which enables focusing the measurement spot at an extended distance.
|Fibers||7 fibers 200 mm or 400 mm core, 6 light-fibers, 1 read fiber, N.A.= 0.22. Standard 2 m length, splitting point in the middle.|
|Wavelength range||200-2500 nm (UV/VIS/NIR)|
|Connectors||SMA-905 connectors (2x)|
|Probe end||Stainless steel 316 cylinder, 50 mm long x 6.35 mm diameter. Optionally –PK for PEEK or –HY for Hastelloy® C276 (on request)|
|Jacketing||The optical fibers are protected by a silicon inner tube and a flexible stainless steel (BX, O.D. 6.0 mm) or chrome plated brass (ME, O.D. 5.0 mm) outer jacket. The jacketing also provides stress relief|
|Temperature||-30°C to 100°C. (-HT version 200°C)|
|Pressure||Probe head 50 bar @ 25°C|
|Bending||Minimum bend radius: Short term (few seconds) 20-40 mm, long term: 120-240 mm|
|FCR-7UVIR200-2-BX/ME*||Reflection probe, 7 x 200 µm fibers, 2 m length, SMA term|
|FCR-7UVIR400-2-BX/ME*||Reflection probe, 7 x 400 µm fibers, 2 m length, SMA term|
|FCR-90-Option||90° reflection add-on reflector for use with all ¼” reflection probes|
|FCR-COL||Adjustable UV/VIS/NIR Collimating/focusing lens for FCR probes|
|-HT||High-temperature version (up to 200°C)|