Accurate cryogenic liquid dispenser

摘要: A system for dispensing cryogenic liquid to a use device includes bulk storage tank providing LNG sump containing meter submerged in LNG. temperature probe is also the line positioned between and hose valve. drain bypasses valve features check so that trapped after returned due pressurization by ambient heat. capacitance provides dielectric compared microprocessor with pure methane at same determine purity of An approximate linear relation density may be used mass flow from measured dielectric. Alternatively, compensation factor based upon dielectrics calculated applied obtain further alternative embodiment substitutes compensating capacitor equations resulting two meters solved