Vortex flowmeters are volumetric flowmeters that measure the volume flow, standard volume flow or mass flow of gases, vapors or liquids based on the Karman vortex street principle. It is mainly used for flow measurement of industrial pipeline medium fluids, such as gases, liquids, steam and various other media.

characteristics

Its characteristics are low pressure loss, wide measurement range, high accuracy, and it is almost unaffected by parameters such as fluid density, pressure, temperature, and viscosity when measuring the volumetric flow rate under working conditions. There are no moving mechanical parts, so it has high reliability and low maintenance. The instrument parameters can remain stable for a long time. The vortex flowmeter adopts piezoelectric stress sensors, which are highly reliable and can operate within a working temperature range of -20℃ to +250℃. It has both analog standard signals and digital pulse signals output, and is easy to be used in conjunction with digital systems such as computers. It is a relatively advanced and ideal measuring instrument.

Measured medium: gas, liquid, steam

Connection methods: flange clamping type, flange type, insertion type

The diameter specifications for the flange clamping type include 25,32,50,80, and 100

The Flange connection type has diameters available in 100,150 and 200

Flow measurement range: Normal flow velocity measurement range, Reynolds number: 1.5×104 to 4×106. Gas: 5-50m/s; Liquid: 0.5-7m/s.

The normal measurement flow range for liquid and gas flow is shown in Table 2. The range of steam flow is shown in Table 3.

The measurement accuracy is 1.0 grade to 1.5 grade

The temperature of the medium being measured: normal temperature -25℃ to 100℃, high temperature -25℃ to 150℃, -25℃ to 250℃

Output signal pulse voltage Output signal high level: 8-10V, low level: 0.7-1.3V

The pulse duty cycle is approximately 50%, and the transmission distance is 100 meters

The pulse current remote transmission signal is 4 to 20 mA, and the transmission distance is 1000 meters

The operating environment temperature of the instrument is -25℃ to +55℃, and the humidity is 5% to 90% RH at 50℃

The materials are stainless steel and aluminum alloy

Power supply: DC24V or lithium battery 3.6V

Explosion-proof grade: Intrinsically safe type iaIIbT3-T6, protection grade: IP65.