Votex Flow Meters
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Descrição
OMEGA’s FV-500B vortex flowmeter provides accurate, reliable, low-maintenance flow measurement. Vortices generated by the flowing fluid stress the shedder bar in pulses, and the shedder bar transmits the stress pulses to the encapsulated piezoelectric sensor. The FV-500B-TBL allows access to the full power of OMEGA’s new intelligent amplifier. It permits the user to display flowrate and/or total in engineering units for liquids and gases. Rate and total can be displayed in cubic feet or meters, U.S. or imperial gallons, or liters (rate and total display in the same units). If the density or enthalpy of the fluid is constant ( i.e., the temperature and pressure do not change), the density value can be entered into the meter to display in kilograms, pounds or metric tons; the enthalpy value can be entered to display in BTUs, kilojoules, etc. The FV-500B-TBL also provides an alphanumeric display of the units selected, and can be set to display rate only, total only, or to toggle between rate and total or rate in % full scale and rate in engineering units. Analog output span adjustment and low cutoff are also settable from the FV-500B-TBL— there is no need to adjust pots. The analog and pulse outputs can also be forced to output from 0 to 100% FS or 0 to 6,000 Hz without any flow through the meter as a test of the amplifier. Additionally, one FV-500B-TBL can be used to program multiple vortex meters. For steam flow measurement, the FV-500B should be used with the OMEGA ® FC-20 mass flow computer. The standard FV-500B is wafer-style to slip between 150# ANSI flanges, and comes supplied with extra long bolts for installation. Units with the suffix “-F” have 150# ANSI flanges.