On-line Immersion Raman Probe

The HORIBA Process Raman On-line immersion Raman probe interfaces directly into the process stream, allowing one to monitor directly at the process conditions. The probe is intrinsically safe since it does not require any electrical connections, and only light is transmitted via fiber optic cables to and from the probe. Since our instrument works in the NIR region, the fiber optic cables can be up to 350 meters (1,000 ft) in length for sampling streams located at a remote location in the refinery. For comparison, MID IR instruments are limited to fibers that can only be a few meters in length. The probes can be manufactured from a variety of materials, including 316-SS, carbon steel, alloy-20, hastelloy, etc. The probes are also designed to be retractable for easy access and cleaning in low-pressure applications (<200 psi). High-pressure applications require a welded ANSI flange seal and are rated up to 3,000 psi. Sample excitation and collection are conducted through a sapphire window located on the immersed end of the probe. The on-line immersion Raman probes are rated up to 250°C.