Vortex Flowmeter

Vortex Flowmeter
Working principle of vortex flowmeter:
(Steam flow meter) If a triangular column vortex generator is installed in the fluid, regular vortices are alternately generated from both sides of the vortex generator. This vortex is called Karman vortex.
Product advantages of vortex flowmeter:
1. The new generation of intelligent vortex flowmeter has the characteristics of high precision, anti-vibration, anti-interference, and convenient maintenance. It is suitable for flow measurement under various steam and gas conditions.
2. The vortex flow sensor, flow display and compensation method are collectively called vortex flowmeter. Vortex flowmeter is a typical representative of vortex flowmeter.
3. The vortex flow sensor is a new type of flow meter with high reliability, excellent technical performance index, good medium adaptability and versatility, designed and manufactured by using the Karman vortex street principle and modern electronic technology.
◆JT-LUGB series vortex flowmeter can accurately measure the flow of gas, liquid and steam in a wide flow range without being affected by physical properties.
◆It is not affected by temperature and pressure, at the same time it is not easy to block, not easy to jam, not easy to scale, and is resistant to high temperature and high pressure.
◆Safe and explosion-proof, suitable for harsh environments.
No moving parts, no voids and gaps, the product has no wear, dirt resistance, no mechanical maintenance, and long service life.
◆Using low-power high-tech, battery-powered on-site display flowmeter, which can run for more than two years without power.
◆Integrated design of voltage stabilization and compensation.
◆The current output is electrically isolated, with good common mode interference suppression.
◆Display the flow value and the accumulated flow value at the same time, without switching in turn.
◆Adopt anti-vibration probe to effectively eliminate the influence of external vibration.
◆The circuit adopts surface mount technology, compact structure and high reliability.
◆Use split type signal converter, the longest cable is 10 meters.
◆The range ratio is up to 20:1.
◆The overall structure design of the instrument is reasonable, the dynamic measuring range is wide, and the pressure loss is small.
◆The meter body is made of stainless steel, which is suitable for the measurement of corrosive media.
◆On-site LCD display, pulse, 4-20mA output or 485 communication, can be connected with industrial automation system.
Technical parameters of vortex flowmeter:
1. Measuring medium: gas, liquid, steam
2. Caliber specification flange card-mounted caliber selection 25, 32, 50, 80, 100
3. Flange connection type caliber choose 100, 150, 200
4. Flow measurement range Normal measurement flow velocity range Reynolds number 1.5×104～4×106; gas 5～50m/s; liquid 0.5～7m/s
5. Measurement accuracy 1.0 grade 1.5 grade
6. The temperature of the measured medium: normal temperature -25℃～100℃
7. High temperature -25℃～150℃-25℃～250℃
8. Output signal pulse voltage output signal high level 8～10V low level 0.7～1.3V
9. The pulse duty cycle is about 50%, and the transmission distance is 100m
10. Pulse current remote transmission signal 4～20 mA, transmission distance is 1000m
11. The ambient temperature of the instrument used: -25℃～+55℃ Humidity: 5～90% RH50℃
12. Material stainless steel, aluminum alloy
13. Power supply DC24V or lithium battery 3.6V
14. Explosion-proof grade intrinsically safe type iaIIbT3-T6
15. Protection grade IP65
Vortex flowmeter product application: Vortex flowmeters are widely used in petroleum, chemical, metallurgical, thermal, textile, papermaking and other industries to superheat steam, saturated steam, compressed air and general gases (oxygen, nitrogen, hydrogen, natural gas, coal gas, etc.) ), water and liquid (such as: water, gasoline, alcohol, benzene, etc.) measurement and control.
Installation conditions:
1. The sensor should be installed on a horizontal, vertical, inclined (liquid flow from bottom to top) pipeline with the same diameter. The upstream and downstream 2 streams of the sensor should be equipped with a certain length of straight pipe section, whose length should meet the requirements of the front straight pipe section 15～20D and the rear straight pipe section 5～1OD.
2. The pipe near where the liquid sensor is installed should be filled with the liquid to be measured.
3. The sensor should avoid installing on the pipeline with strong mechanical vibration.
4. The inner diameter of the straight pipe should be as consistent as possible with the sensor diameter. If it cannot be the same, a pipe slightly larger than the sensor diameter should be used, with an error of ≤3% and no more than 5mm.
5. When the measured medium contains more impurities, a filter should be installed beyond the length required by the upstream straight pipe section of the sensor.
The sensor should be installed in places with strong electromagnetic field interference, small space and inconvenient maintenance.
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Select the required parameters of the vortex flowmeter: 　　
1. The diameter of the pipe 　　
2. The name of the measured medium (steam should be marked as saturated steam or superheated steam) 　　
3. The working pressure of the measured medium 　　
4. Working temperature of the measured medium 　　
5. Working flow of the measured medium