ESMLUGB vortex flow meter for flow measurement and automatic control
Working Principle
When fluid flows past a triangular or cylindrical vortex shedding body, vortices are alternately generated on both sides; this type of vortex is called a Kármán vortex. The release frequency of the vortices, f, is related to the average velocity of the fluid v passing the vortex shedding body and the characteristic width d of the vortex shedding body, that is, f = v Sr / d, where Sr is the Strouhal number. By using piezoelectric or capacitive sensors to detect the pressure changes caused by the vortices, the frequency signal is converted into an electrical signal, and then the flow rate is calculated according to the flow formula Q = A × v (where A is the cross-sectional area of the pipe).
Product Features
- It has a wide measurement range, high accuracy, low pressure loss, and features high reliability and long-term stability.
- The structure is simple, easy to install and maintain, with no moving parts and no mechanical wear.
- Brand-new exterior design, the body is made with precision casting, aesthetically pleasing, resistant to high temperatures and corrosion.
- Common signals include pulse or analog signals, which are stable and have strong anti-interference capabilities.
Product detail
Technical Specifications
|
Name |
ESMLUGB Vortex Flow meter |
|
Measuring medium |
Liquids, common gases, vapors |
|
Nominal Diameter |
DN15～DN300 (full-pipe type), DN150～DN2000 (insertion type), diameters above DN2000 supplied by agreement |
|
Medium temperature |
-40 to 100°C (normal temperature), -40 to 250°C (medium temperature), -40 to 320°C (high temperature), -40 to 350°C (ultra-high temperature) |
|
Nominal Pressure |
1.6MPa, 2.5MPa, 4.0MPa (>4.0 supplied according to agreement) |
|
Precision |
±1%R, ±1.5%R (full-pipe type) |
|
±1.5%R, ±2.5%R (insertion type) |
|
|
Power supply |
12VDC (three-wire pulse output), 24VDC (three-wire pulse output type and two-wire current output type), 3.6V lithium battery, dual power supply |
|
Body material |
304 (Supply under other material agreements) |
|
Protection level |
IP65 (other protection level agreements available) |
|
Environmental conditions |
Temperature: -20℃ to 55℃ |
|
relative humidity: 5% to 90% |
|
|
atmospheric pressure: 86 to 106 kPa. |
