SST

Single-Sided Transmission Process Probe

Gold Brazed Transmission SST Probe for Process Sampling 

Our Single-Sided Transmission (SST) Probe is our most popular fiber optic probe. On the market for over 25 years, it has been the most widely copied probe design in the industry. Rugged and reliable, it’s ideal for continuous process monitoring applications. Easily installed in a pipe or reactor through a single access port, the SST Probe is compatible with any Guided Wave analyzer and many other analyzer brands. Optional accessories make it easy to adapt the SST Probe to different kinds of process installations.

SST Probe Features

  • Available in five standard lengths and six optical pathlengths
  • Corrosion resistant construction
  • Rugged and vibration resistant design
  • Sealed against ambient moisture infiltration
  • High optical throughput for low noise spectroscopy
  • Temperatures to 300 °C
  • Pressures to 2000 psi or 138 bar
  • Higher pressures are available on request

Unique Insertion Probe Design

The SST probe houses incoming and outgoing optical-fibers side-by-side in a single 3/4-inch, or 1-inch stainless steel body. This unique, compact design (U.S. Patent #6,043,895) means true transmission which translates to more signal, less noise, better measurements.

Process-Resistant Probe Body Construction

The SST Probe is designed to withstand harsh process conditions. The body of the probe is built from 316L stainless steel or, by special order, other corrosion resistant materials. The SST Probe’s sapphire optical windows are sealed to the probe body with proprietary gold alloy brazing. These materials are unaffected by most hydrocarbons and polymers. For extremely corrosive process streams, use the O-Ring SST Probe instead. Additionally, our special construction techniques also make the probe insensitive to most process pipe vibrations.

Exceptional Light Transmission

Like other Guided Wave optical probes, the SST Probe provides exceptional optical performance. Typically, peak transmission exceeds 40%. That means more signal, lower measurement noise, and lower limits of detection. Of course, the SST Probe’s optics are permanently aligned at the factory. There’s no need for optical adjustments at the time of installation, nor ever any chance for misalignment or varying pathlengths.

Compatible with All Guided Wave Analyzers and Many Other Analyzer Brands

The probe, or sample interface, is a crucial component of a complete analyzer system. For optimal performance, the probe must be ‘’optically matched’’ with the spectrometer and with the optical fiber that transmits the spectral signal. The SST Probe (and each of Guided Wave’s other optical probes) is matched to Guided Wave analyzers and fiber to achieve the highest possible performance. Guided Wave probes also work with many other brands of fiber optic analyzers, according to fiber diameter and spectral range.

Easy Adaptation to Process Connections

The SST probe installation can be customized to fit your process:

  • Mounting flange can be welded to the SST probe to complete the process access port
  • Extractor assembly allows for quick and easy removal and servicing of probes without shutting down the process

Large Variety and Configurable Designs

Guided Wave offers a variety of probes, flow cells and fiber optic cables that meet the harsh demands of the process environment. Several have auxiliary features. Most of our probes and flow cells can be optimized for the UV, visible or NIR spectral regions or supplied with custom fiber diameters and connectors to match your optical requirements.

Figure 1: Anatomy of an SST Process Probe Saybolt Color Analyzer Enclosure

Specifications Single-Sided Transmission (SST) Process Probe


    For a complete range of applications, system options, and service, please contact us.

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    Ideal for contiguous process monitoring in industrial applications

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