Transmission Probes
Product information "Transmission Probes"
Wavelength range 200-2500 nm; Pressure Probe Head 10 bar @ 25°C; Connector Type SMA-905
Transmission dip probes are designed for on-line and inline absorbance measurements in fluids. By dipping or permanently mounting the probe end into the fluid, absorbance can be measured. Explore our range of transmission dip probes below.
Transmission Probes
Transmission dip probes are used for on-line and inline absorbance measurements in fluids. By dipping or permanently mounting the probe end into the fluid, absorbance can be measured. A standard SMA-905 connector couples light into a fiber bundle, typically consisting of six fibers (other configurations available upon request). The light is transmitted to the probe end, where it crosses a predetermined gap and is reflected against a diffuse white reflective material back onto the receiving read fiber, which is coupled to a spectrometer on the second leg of the probe. The read fiber is centrally placed within the illumination fiber bundle to provide optimal collection efficiency. 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 splits the fibers into their respective legs (illumination and read), which are terminated in SMA-905 connectors.
Mini Transmission Probes
For absorption measurements in miniaturized centrifuge tubes or vessels, Avantes offers the mini transmission dip probe. It features a miniaturized tip that is 130mm long and 3.2mm in diameter. The mini transmission dip probe has a fixed optical path length of 5 or 10 mm. It is available in three versions: one for UV/VIS (200-800 nm) measurements, one for VIS/NIR (350-2500 nm), and one for UV/VIS/NIR (250-2500 nm). For best results below 240 nm, solarization-resistant fiber (-SR) is recommended. The probe features Avantes ME, chrome-plated brass, and jacketing. Optionally, the probe can be configured with a longer stainless steel or Hastelloy® tip or other jacketing options (MS, BX, or PVC). It has two SMA connectors (FC/PC also available) for convenient coupling to the Avantes line of spectrometers and light sources.
Mini Transmission Dip Probes with Variable Path Length
This fiber-optic probe features a variable and adjustable path length for more flexibility during absorbance measurements in fluids. The gap between the fiber and the diffuser can be set anywhere between 0.25 and 10 mm. A standard SMA-905 connector couples light into a fiber bundle, typically consisting of six fibers (other configurations available upon request). The light is transmitted to the probe end, where it crosses the predetermined gap and is reflected against a diffuse white reflective material back onto the receiving read fiber, which is coupled to a spectrometer on the second leg of the probe. The read fiber is centrally placed within the illumination fiber bundle to provide optimal collection efficiency. 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 splits the fibers into their respective legs (illumination and read), which are terminated in SMA-905 connectors.
Applications: On-line and in-line absorbance measurements in fluids
Please note that Avantes products are available from us only in Denmark, Iceland, Norway, and Sweden.
Avantes is a leading innovator in fibre-optic spectroscopy, with nearly three decades of experience delivering high-performance spectrometers and fully customized measurement solutions. Headquartered in Apeldoorn, the Netherlands, the company develops and manufactures a comprehensive portfolio of spectrometers, light sources, fibre-optic probes, and accessories for UV, visible, and near-infrared applications.
The company serves customers across a wide range of industries including biomedical research, environmental monitoring, semiconductor manufacturing and food quality control, supporting both standard laboratory setups and OEM integration for high-volume industrial use. With tens of thousands of systems installed worldwide and a global distribution network, Avantes combines international reach with application-driven local support.
Driven by a mission to help humankind live longer and healthier and to support a more sustainable planet, Avantes has built a reputation for service-oriented engineering, deep technical expertise, and long-term partnerships. Its headquarters includes a state-of-the-art Spectroscopy Experience Center that offers hands-on demonstrations, feasibility testing, and collaborative development of tailored measurement setups.
Please note that Avantes products are available from us only in Denmark, Iceland, Norway, and Sweden.
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