Endress+Hauser Prowirl 73 multivariable vortex flowmeter

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Endress+Hauser’s Prowirl 73 is a standalone, multivariable vortex flowmeter for measuring mass flow, energy, density, temperature and volumetric flow of liquids, gases and steam.

The Prowirl 73 features an integrated temperature sensor and in-built flow computer. This reduces the requirement for additional devices and enables the flowmeter to simultaneously measure temperature and calculate mass flow for accurate energy management in facilities or processes.

The Prowirl 73 is designed to simplify mass flow and energy measurement of technical and natural gases. The in-built flow computer uses preprogrammed compressibility data to calculate the mass flow, with AGA natural gas equations to additionally report energy content. Currently, 18 technical gases and compounds of up to eight combinations of those gases are included.

Reliability of the Prowirl 73 is enhanced by the DSC sensor. This sensor is mechanically balanced making it immune to pipe vibration and capable of withstanding temperature shocks over 150 K/s. Its aperture-free design eliminates the risk of clogging from particles transported in the medium.

The Prowirl 73 is suitable for a range of applications involving widely differing fluids including saturated steam, superheated steam, compressed air, nitrogen, liquefied gases, flue gases, carbon dioxide, fully demineralised water, solvents, heat transfer oils, boiler feedwater and condensate. The device is suitable for operating temperatures from -200 to +400°C and pressures of up to 40 bar. It has IEC Ex approval, and is available with the choices of 4-20 mA HART, Profibus PA, and FOUNDATION Fieldbus protocols.