Axiom Analytical has brought out the FPT-850V UV-Visible Transmission Probe, which operates reliably under high temperatures, thermal shock and aggressive chemistries.
The probe design has a proprietary sealing technique involving a direct sapphire-to-metal welded pressure seal.
This approach provides significant advantages over other sealing techniques.
A high degree of chemical resistance is assured by the fact that the only materials in contact with the process are sapphire, high-nickel alloys and a thin flash of either gold or PTFE (application dependant).
The compliance required to withstand extreme temperature cycling is provided by the high nickel alloy seal, which is compressed at high pressure prior to welding.
This approach eliminates fatigue and stress failures common with brazed seals as well as the limited lifetime characteristic of elastomeric seals.
The second key element of the FPT-850V design is the elimination of optical fibres within the probe.
This ensures excellent optical stability and long-term reliability.
The elimination of both internal optical fibres and elastomeric seals provides for reliable long-term operation at temperatures as high as 400C.
FPT-850N near-infrared probes are widely used for online process analysis in the chemical, petroleum and pharmaceutical industries.
