[2] When the medium flows through the Bluff body at a certain speed, an alternately arranged vortex belt is generated behind the sides of the Bluff body, called the "von Kármán vortex".
The signal is sent to the intelligent flow totalizer to be processed after being amplified by the pre-amplifier.
In certain range of Reynolds number (2×10^4~7×10^6), the relationship among vortex releasing frequency, fluid velocity, and vortex generator facing flow surface width can be expressed by the following equation:[3]
[4] The vortex flowmeter is a broad-spectrum flow meter which can be used for metering, measurement and control of most steam, gas and liquid flow for a very unique medium versatility, high stability and high reliability with no moving parts, simple structure and low failure rate.
The vortex flowmeter is relatively economical because of its simple flow measurement system and ease of maintenance.