(Steam Flow Meter) When a triangular column type vortex generator is provided in the fluid, regular vortices are alternately generated from both sides of the vortex generator. This vortex is called a Karman vortex. As shown in the right figure, the vortex is listed in the vortex generator. The downstream is arranged asymmetrically.
Vortex flowmeter product advantages:
1. A new generation of intelligent vortex flowmeter with high precision, anti-vibration, anti-interference and convenient maintenance. It is suitable for flow measurement under various steam and gas conditions.
2. Vortex flow sensor and flow display instrument and compensation method are collectively referred to as vortex flowmeter. The vortex flowmeter is a typical representative of a vortex flowmeter.
3. Vortex flow sensor is a new type of flow meter designed and manufactured by using Karman vortex principle and modern electronic technology with high reliability, excellent technical performance index, good medium adaptability and versatility.
The JT-LUGB series of vortex flowmeters accurately measure the flow of gases, liquids and vapors over a wide flow range without being affected by physical properties.
It is not affected by temperature and pressure, and is not easy to block, difficult to get stuck, not easy to scale, high temperature and high pressure.
Safe and explosion-proof, suitable for harsh environments.
No moving parts, no voids, no wear and dirt, no mechanical maintenance and long service life.
The micro-power high-tech, battery-powered field display type flowmeter can be continuously operated for more than two years.
Integrated design of voltage regulation compensation.
The current outputs are electrically isolated and have good common mode interference rejection.
At the same time, the flow value and the accumulated flow value are displayed, and it is not necessary to switch in turn.
The anti-vibration probe is used to effectively eliminate the influence of external vibration.
The circuit adopts a surface mount technology, which is compact in structure and high in reliability.
With a split signal converter, the cable is up to 10 meters long.
The turndown ratio is as wide as 20:1.
The overall structure design of the instrument is reasonable, the dynamic measurement range is wide, and the pressure loss is small.
The body is made of stainless steel and is suitable for the measurement of corrosive media.
On-site LCD display, pulse, 4-20mA output or 485 communication, can be connected to industrial automation systems.
Vortex flowmeter caliber and flow range:
DN (mm) | liquid | gas | steam |
20 | 0.8-10 | 5-40 | 8-80 |
25 | 1-12 | 7.2-60 | 10-120 |
32 | 1.5-20 | 12-100 | 15-200 |
40 | 2-30 | 18-150 | 20-300 |
50 | 3-50 | 30-300 | 30-450 |
65 | 6-80 | 50-420 | 60-800 |
80 | 10-130 | 70-600 | 100-1300 |
100 | 20-200 | 120-1000 | 200-2000 |
125 | 30-300 | 180-1500 | 300-3000 |
150 | 45-450 | 240-2000 | 450-4500 |
200 | 90-900 | 480-4000 | 900-9000 |
250 | 120-1200 | 700-8000 | 1200-12000 |
300 | 180-2000 | 900-10000 | 1600-16000 |
Vortex flowmeter technical parameters:
1. Measuring medium: gas, liquid, vapor
2, caliber specifications flange card mounted caliber selection 25,32,50,80,100
3, flange connection type selection 100,150,200
4. Flow measurement range Normal measurement flow rate range Reynolds number 1.5×104～4×106; gas 5～50m/s; liquid 0.5～7m/s
The normal measurement flow range liquid and gas flow measurement range is shown in Table 2; the vapor flow range is shown in Table 3.
5, measurement accuracy 1.0 level 1.5
6. Temperature of the measured medium: normal temperature –25°C～100°C
7, high temperature –25 ° C ~ 150 ° C -25 ° C ~ 250 ° C
8, the output signal pulse voltage output signal high level 8 ~ 10V low 0.7 ~ 1.3V
9, the pulse duty cycle is about 50%, the transmission distance is 100m
10, pulse current remote transmission signal 4 ~ 20 mA, transmission distance is 1000m
11, instrument use ambient temperature: -25 ° C ~ +55 ° C humidity: 5 ~ 90% RH50 ° C
12, material stainless steel, aluminum alloy
13, power supply DC24V or lithium battery 3.6V
14, explosion-proof grade intrinsic safety type iaIIbT3-T6
15, protection grade IP65
Vortex flowmeter product application: Vortex flowmeter is widely used in petroleum, chemical, metallurgy, thermal, textile, paper and other industries for superheated steam, saturated steam, compressed air and general gases (oxygen, nitrogen, hydrogen, natural gas, gas, etc. ), metering and control of water and liquids (eg water, gasoline, alcohol, benzene, etc.).
Vortex flowmeter product selection:
Spectrum | Description | ||||||
JTLUG | Vortex flow meter | ||||||
Detection | B | Piezoelectric sensor | |||||
the way | E | Capacitive sensor | |||||
Connection method | 1 | Fully tubular only | Flange connection | ||||
2 | Fully tubular only | Flange card type | |||||
3 | Insert type only | Simple insertion type | |||||
4 | Insert type only | Ball valve insertion type | |||||
Measuring medium | 2 | liquid | |||||
3 | gas | ||||||
4 | steam | ||||||
Nominal diameter | 2 | DN25 | |||||
... | ... Unit: mm | ||||||
30 | DN300 | ||||||
Use environment | P | normal type | |||||
B | Explosion-proof | ||||||
output signal | 1 | Pulse output | |||||
2 | 4~20mA current output, liquid crystal display | ||||||
3 | RS-485 communication | ||||||
4 | Battery powered, without temperature, pressure compensation | ||||||
5 | Temperature and pressure compensation integrated, 4 ~ 20mA current output type | ||||||
6 | Temperature and pressure compensation, battery-powered | ||||||
Vortex flowmeter installation diagram:
Vortex flowmeter installation and use:
The installation of the vortex flowmeter requires a certain number of straight pipe sections. The common conditions are as follows (D is the diameter of the pipe):
Pipe condition | Upstream | Downstream |
Concentric shrink tube full open gate valve | 15D | 5D |
90°C right angle elbow | 20D | 5D |
Two 90°C elbows in the same plane | 25D | 5D |
Half open gate valve | 50D | 5D |
Two 90°C elbows in different planes | 40D | 5D |
With rectifier bundle | 12D | 5D |
Installation condition
1. The sensor should be installed on a pipe with the same diameter as horizontal, vertical, and inclined (liquid flow from bottom to top). The upstream and lower 2 swims of the sensor shall be equipped with a straight pipe section of a certain length, and the length shall be in accordance with the requirements of the front straight pipe section 15-20D and the rear straight pipe section 5~1OD.
2. The pipe near the installation of the liquid sensor should be filled with the liquid to be tested.
3. The sensor should be avoided on pipes with strong mechanical vibration.
4. The inner diameter of the straight pipe section should be as close as possible to the sensor diameter. If it is not consistent, the pipe with a slightly larger diameter than the sensor should be used. The error should be ≤3% and not more than 5mm.
5. When the measured medium contains more impurities, a filter should be installed in addition to the required length of the straight pipe upstream of the sensor.
The sensor should be protected from installations with strong electromagnetic interference, small space and inconvenient maintenance.
Natural gas flow meter price, natural gas flow meter manufacturer, natural gas flow meter parameters
Select the parameters required for the vortex flowmeter:
1, the caliber of the pipe
2, the name of the measured medium (steam should be noted whether it is saturated steam or superheated steam)
3. Working pressure of the measured medium
4, the working temperature of the measured medium
5, the working flow of the measured medium
Saturated steam density, pressure, temperature list
Temperature °C | Pressure kgf/m3 | Density kg/m3 | Temperature °C | Pressure kgf/m3 | Density kg/m3 |
120 | 2.0245 | 1.121 | 175 | 9.101 | 4.617 |
122 | 2.1561 | 1.189 | 176 | 9.317 | 4.721 |
124 | 2.2947 | 1.261 | 177 | 9.538 | 4.829 |
126 | 2.4404 | 1.336 | 178 | 9.763 | 4.936 |
128 | 2.5935 | 1.414 | 179 | 9.992 | 5.045 |
130 | 2.7544 | 1.496 | 180 | 10.225 | 5.157 |
132 | 2.9233 | 1.582 | 181 | 10.462 | 5.271 |
134 | 3.101 | 1.672 | 182 | 10.703 | 5.388 |
136 | 3.286 | 1.765 | 183 | 10.950 | 5.507 |
138 | 3.481 | 1.864 | 184 | 11.201 | 5.627 |
140 | 3.685 | 1.966 | 185 | 11.456 | 5.750 |
142 | 3.898 | 2.073 | 186 | 11.715 | 5.875 |
144 | 4.121 | 2.184 | 187 | 11.979 | 6.002 |
146 | 4.355 | 2.300 | 188 | 12.248 | 6.131 |
148 | 4.599 | 2.421 | 189 | 12.522 | 6.262 |
150 | 4.854 | 2.547 | 190 | 12.800 | 6.394 |
151 | 4.985 | 2.612 | 191 | 13.083 | 6.532 |
152 | 5.119 | 2.679 | 192 | 13.371 | 6.671 |
153 | 5.257 | 2.746 | 193 | 13.664 | 6.812 |
154 | 5.397 | 2.815 | 194 | 13.962 | 6.954 |
155 | 5.540 | 2.855 | 195 | 14.265 | 7.097 |
156 | 5.686 | 2.958 | 196 | 14.573 | 7.246 |
157 | 5.836 | 3.030 | 197 | 14.866 | 7.396 |
158 | 5.988 | 3.103 | 198 | 15.204 | 7.547 |
159 | 6.144 | 3.182 | 199 | 15.528 | 7.704 |
160 | 6.302 | 3.258 | 200 | 15.857 | 7.862 |
161 | 6.464 | 3.338 | 201 | 16.192 | 8.026 |
162 | 6.630 | 3.419 | 202 | 16.532 | 8.183 |
163 | 6.798 | 3.500 | 203 | 16.877 | 8.354 |
164 | 6.970 | 3.584 | 204 | 17.228 | 8.518 |
165 | 7.146 | 3.670 | 205 | 17.585 | 8.688 |
166 | 7.325 | 3.757 | 206 | 17.948 | 8.865 |
167 | 7.507 | 3.846 | 207 | 18.316 | 9.042 |
168 | 7.693 | 3.935 | 208 | 18.690 | 9.225 |
169 | 7.883 | 4.027 | 209 | 19.070 | 9.407 |
170 | 8.076 | 4.122 | 210 | 19.456 | 9.588 |
171 | 8.274 | 4.218 | 211 | 19.848 | 9.775 |
172 | 8.475 | 4.314 | 212 | 20.246 | 9.970 |
173 | 8.679 | 4.413 | 213 | 20.651 | 10.170 |
174 | 8.888 | 4.515 | 214 | 21.061 | 10.360 |
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