Rotating vortex flowmeter
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Can the measurement accuracy of rotary vortex flowmeters reach a very high level? How is the stability? What is the typical range ratio?
It features standard 1.5-grade accuracy and is widely used in natural gas applications; the range ratio is 1:10, with good stability
The range ratio isn’t very wide; will there be fluctuations at low flow rates?
The swirl ratio should ideally be 30:1; the accuracy with normal temperature and pressure compensation is 1.5, while that for purely volume measurement is 1.0
A range of 30:1 is acceptable; will the price be higher if temperature and pressure compensation is included?
Pressure instruments and thermal resistors are not very expensive; the P/T signals can be sent to secondary instruments or a DCS to enable conversion and compensation of the flow rate
I thought it was integrated within the table
I’m not sure if there are any integrated versions of the rotary type
Nowadays, they are mostly integrated models with temperature and pressure compensation. The price mainly depends on the diameter, followed by the material used for the body; aluminum alloy is relatively inexpensive, at around 4K-5K
Many of the natural gas flow meters produced by Cangnan and Tianxin are of this type; you can consult the manufacturers for more information