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About
Swirlmeter
Swirlmeter was an
innovative product in its time - a "vortex precession" flowmeter -
and it was manufactured and sold off and on for many years by Fischer and
Porter. The
Swirlmeter did not require a straight run. It was highly accurate, and had
very good repeatability and turndown. The vortex shedding flowmeters of today are based on its design. 
Once
ABB acquired the Fischer and Porter product line in 1999, it fully
integrated the Swirlmeter with its vortex shedding flowmeter, and made
the product even more stable, and more affordable to manufacture, than the
Swirlmeter. By 2003, ABB's offering included the original design for its sensor and
transmitter, with only slight modications to the flow element body. In
some instances, a spoolpiece was provided, and, depending on customer needs,
could be changed per application on an as-needed basis.
Now, ABB's vortex shedding
flowmeters are equipped with digital signal processing (DSP) and advanced
filtering techniques for improved flow signal detection. They are immune from
the effects of hydraulic noise and pipeline vibration. The ABB Swirlmeter of
today is marketed as the FS4000 (TRIO-WIRL S).
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