Mass Vortex Flow Meter for Cryogenic Fluids

Sierra Instruments has introduced a new cryogenic version of its Innova-Mass multivariable mass vortex flow meter for measuring mass flow rates of cryogenic fluids down to –328F (–200C). Using a special cryogenic temperature RTD, mass calculations are done with the latest density equations of state for liquid oxygen, nitrogen, argon, and carbon dioxide. The multivariable mass vortex meter has no moving parts, making it more durable and reliable than a turbine flow meter, which is typically used. The device comes in two models: Innova-Mass Model 240 and Model 241, which measure five process variables (mass flow, volumetric flow, temperature, pressure, and density) through one process connection. The Innova-Mass is loop-powered with power, a programmable analog output, and a HART or Modbus signal riding on the same two wires. (

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