Excalibur HD FET Measurement Cell

Fiber-optic coupled flow cells for spectroscopic analysis of polymer melts and other demanding process applications.

Hellma Analytics FET-980 cells with Axiom Technology bring high performance chemical composition monitoring to some of the most demanding process environments. These products are designed for use in high temperature (to 400°C), high pressure (to 200 bar), and/or high viscosity applications. While ideal for a variety of sample types, FET cells are especially suited for the analysis of hot polymer melts.

In these applications, the cells are often mounted in series with a die on a small extruder or in a rheometer loop on a larger extruder. The key to the FET-980’s extreme durability is the use of thick sapphire windows, which are permanently sealed into the cell structure by means of the company’s patented welded metal seal design (US Patent: 6,587,195 B1). This provides an extremely robust and permanent optical seal, virtually eliminating the possibility of window breakage, chemical attack, or mechanical seal failure. The standard cell includes fittings for a cartridge heater and a temperature sensor.

 

Special Features:

  • Metal seals for extreme robustness

  • Compatible with high temperature, pressure, and viscosity

  • Minimum possible flow restriction

  • Customized flow fixtures to meet individual needs

Technical Data

Model series Excalibur HD FET
Measurement Principle Transmission
Optical Pathlength  0.5 mm / 1 mm /2 mm / 3 mm /  5 mm / 10 mm
Optical Material Sapphire
Cell Material Stainless Steel 1.4435 / 1.4404 (316L)
Sealing Technology Permanent welded-in gold plated high nickel alloy C-ring
Spectral Range NIR  
Optical Connection F-SMA socket and housing connection (0,75“ NPT male thread) /
FC/PC typ N-socket and housing connection (0,75“ NPT male thread)
Process Connection 0.25” Swagelok /
0.5” Swagelok
Pressure Range -1 to 200 bar
Additional Functions Fittings for cartridge heaters and a temperature sensor (to be ordered separately)

Excalibur HD FET (Datasheet EN)

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Optical Probes / Measuring Cells (Brochure EN)

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Probe and Flow Cell Configurator

Hellma offers the largest selection of products worldwide and the highest level of expertise to support your online measurements from UV to IR. Find the right measuring interface quickly and easily or configure your individual immersion probe or measuring cell.

 

 

You are interested in this product or have any questions?
Please do not hesitate to contact us!

 

E-Mail: sales.analytics@hellma.com
Telephone:  +49 7631 182 10 10

More information about our process probes can be found here.

If you are interested in this product or if you have any questions - please contact us. Further measuring cells can be found in our configurator.