Air Gas Steam Vortex Water Flow Meter
This Type Of Vortex Flow Meter is a new type developed by the principle of fluid vibration.Flowmeter, the flowmeter has no moving parts, high reliability, high precision, long life, and can be widely used.Accurate measurement of instantaneous and cumulative flow of liquid over the flow range.
This vortex flow sensor measures the flow of steam, gas and low viscosity liquids based on the theory of the generation of vortices and the relationship between vortices and flow in Carmen and Strohal. A triangular prism, that is, a vortex sounding body, is vertically inserted into the body. When a medium flows through the body, a regular Karman vortex is generated alternately behind the triangular prism, and the separation frequency F of the vortex and the flow velocity of the medium V In direct proportion. By detecting the number of vortices by the sensor head, the flow velocity of the fluid can be measured, and then the volume flow rate of the measured medium is calculated according to the diameter of the body.
3.main tecnical parameters
Nominal diameter: 15~2500mm
Measuring medium: liquid, gas, steam
Medium temperature: -40~350°C, capacitance can reach 550°C
Connection method: flanged, flanged, plug-in
Nominal pressure: 1.6MPa, 2.5MPa, 4.0 MPa and above
Output signal: pulse signal, 4~20mA signal, RS485 communication output, Hart protocol
Accuracy class: liquid measurement accuracy is ±1.0%, gas measurement accuracy is ±1.5%
Power supply: 12VDC, 24VDC, 3.6V lithium battery (more than 5 years available)
Repeatability: ≤0.3%, 0.5%, 1.0%
Body material: stainless steel 304, stainless steel 316L
Load resistance: <750Ω
Flow rate range: liquid 0.5~6m/s, gas 5~60m/s
Pressure loss: resistance coefficient cd ≤ 2.4, small pressure loss (about 1/4 ~ 1/2 of the orifice flowmeter)
Structure type: flange connection type, flange clamp type, temperature and pressure integration type, insert type, sanitary type clamp type
Explosion-proof grade: EXiaIICT6 (intrinsic explosion-proof), EXdIIBT6 (explosion-proof)
*The sensor should be mounted on a pipe that is horizontal, vertical, and inclined (liquid flow from bottom to top) corresponding to its diameter. Upstream of the sensor.And the downstream should be equipped with a length of straight pipe section, the length of which should meet the requirements of the front straight pipe section 15~20D and the rear straight pipe section 5~10D.
*The piping in the vicinity of the installation of the liquid sensor should be filled with the liquid to be tested.
*The sensor should be protected from installation on pipes with strong mechanical vibrations.
*The inner diameter of the straight pipe section should be as close as possible to the sensor diameter. If it is not consistent, a pipe slightly larger than the sensor diameter should be used.
*When the measured medium contains more impurities, install a filter in addition to the length required for the straight pipe upstream of the sensor.
*The sensor should be protected from installations with strong electromagnetic interference, small space and inconvenient maintenance.