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Despite the growth of new-technology flowmeters over the past few years, conventional technology flowmeters are holding their own. Many users are still selecting differential pressure (DP), turbine, positive displacement, and other more traditional meter types for their flow measurement applications. Conventional technology flowmeters share the following five characteristics:
- As a group, these meters were introduced before 1950.
- They are less the focus of new product development than new-technology meters.
- Their performance, including criteria such as accuracy, is not at the same level as the performance of new-technology flowmeters.
- They generally have higher maintenance requirements than new-technology flowmeters.
- They are slow to incorporate recent advances in communication protocols, such as HART, Foundation Fieldbus, and Profibus.
Traditional technology flowmeters include:
New technology flowmeters are Coriolis, magnetic, ultrasonic, vortex, and thermal. |
