Metering at cryogenic temperatures: LNG boil-off

At cryogenic temperatures of –162°C at normal pressures, natural gas condenses into Liquefied Natural Gas (LNG). LNG takes up only 1/600 of the volume of natural gas and is therefore much easier to transport. Transportation of LNG is a good alternative when a pipeline is not feasible, such as across vast oceans to key consumer markets. However, constant boil-off from the LNG in tanks and vessels must be either recycled for re-liquefaction or potentially even used as fuel for the vessels transporting the LNG. Ultrasonic gas flow meters from SICK allow a precise and reliable fiscal metering of the boil-off losses even at cryogenic temperatures.

  • Following product families can be used
    The perfect match
    • User-friendly product family
    • Automatic adjustment of pressure and temperature influences
    • Available for all operating conditions
    • PowerIn Technology™ for reliable backup operation
    • Intelligent application diagnostics with i-diagnostics™
    • Can be extended to include flow computers using connect-and-go technology
    • Measuring capability up to 30% hydrogen in natural gas
    • Gas quality indicator for quantifying the H2 content
    Reliable turnkey solution for fiscal metering
    • Complete calibration is possible
    • Customization of instrumentation including gas analyzer, gas chromatograph, and supervisory computer
    • Seamless integration with the flow computer Flow-X from SICK
    • Available from Class 150 to Class 2500
    • Modular design
    Modular solutions for fiscal metering
    • Utilises the ultrasonic flow meters FLOWSIC600 or FLOWSIC600-XT
    • Available from DN 50 to DN 1200 from Class 150 to Class 2500
    • With calibration the uncertainty of 0.1% is achievable
    • Customization of system components
    • Seamless integration with the SICK Flow-X flow computer