Liquefied natural gas (LNG)

Real-time measurement of contaminants down to trace levels

SpectraSensors tunable diode laser absorption spectroscopy (TDLAS) analyzers measure H2S, CO2, and H2O at critical points around LNG feed pretreatment process units. These measurements help plant operators improve process control, meet stringent product specifications, mitigate corrosion damage, and reduce operating costs. Contaminants are monitored to support on-time LNG shipments.

Molecular sieve hydration

Trace level H2O measurements at the outlet of molecular sieve vessels help control the dehydration process and ensure the H2O concentration in gas sent to an LNG plant meets requirements for cryogenic liquefaction (< 0.1 ppm H2O).

Amine treatment & gas sweetening

H2S and CO2 measurements at the outlet of amine treatment units ensure gas sent to an LNG plant will not corrode or freeze up process equipment in the cryogenic liquefaction train.

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Monitoring impurities in gas feed to the cold box to ensure reliable liquefaction, on-time shipments

SpectraSensors, Inc with its TDLAS analyzers was acquired by Endress+Hauser in 2012. Kaiser Optical Systems was also acquired bringing the Raman-based Optograf spectrometer to the portfolio.