Liquefied natural gas (LNG)
Real-time measurement of contaminants down to trace levels
Monitoring impurities in the gas feed to the cold box ensures reliable liquefaction and on-time shipments.
Moisture H2O in molecular sieve outlet
Gas moisture concentration at outlet of desiccant dryers to prevent freeze-up of liquefaction train. Measuring range starting from 0 to 2ppmv.
The traditional approach
Electrochemical cells are affected by trace hydrocarbons and other contaminants requiring frequent replacement.
Quartz crystal moisture balances are sensitive to contaminants and have high OPEX.
SpectraSensors' non-contact laser is immune to damage and suffers no wet-up or dry-down delays even when the concentration changes dramatically.
Typical analytes and measuring ranges
Analyte: H2S - Range: 0-10 ppmv
Analyte: H2O - Range: 0-2 to 0-10 ppmv
Analyte: CO2 - Range: 0-100 ppmv
Reliable trace-level (sub-ppm) measurement using differential spectroscopy.
Periodic self-validation with an integral, internal permeation tube to avoid downstream upset.
Exceptionally fast response in detecting moisture breakthrough.