Calculation and Selection of Range of Vortex Flowmeter

Calculation and Selection of Range of Vortex Flowmeter

The vortex flowmeter can measure the flow of gas, liquid and steam, such as volume flow, mass flow, volume flow, etc. The measurement effect is good and the accuracy is high. It is the most widely used type of fluid measurement in industrial pipelines and has good measurement results.

The measurement range of the vortex flowmeter is large, and the influence on the measurement is small. For example, fluid density, pressure, viscosity, etc. will not affect the measurement function of the vortex flowmeter, so the practicability is still very strong.

The advantage of the vortex flowmeter is its large measuring range. High reliability, no mechanical maintenance, because there are no mechanical parts. In this way, even if the measurement time is long, the display parameters can be relatively stable. With pressure sensor, it can work in low temperature and high temperature environment with strong adaptability. Among similar measuring instruments, the vortex flowmeter is the ideal choice. Now, many factories use this kind of instrument to measure value better and more accurately.

For example: 0.13-0.16 1/L, you can estimate the bai yourself, measure the width of the triangle column, and the Straw du Hall parameter is between 0.16-0.23 (calculated at 0.17).

f=StV/d formula (1)

Where dao:

f-Carman vortex frequency generated on one side of the generator

St-Strohal number (dimensionless number)

V-the average flow rate of the fluid

d-the width of the vortex generator (note the unit)

After calculating the frequency

K=f*3.6/(v*D*D/353.7)

K: flow coefficient

f: Frequency generated at set flow rate

D: Flow meter caliber

V: Flow rate

Vortex flowmeter range selection

The function and version of the white power amplifier and Du power amplifier of the vortex flowmeter are different.

The measuring range of the vortex flowmeter
Gas Caliber Measurement lower limit
(m3/h)
Measurement limit
(m3/h)
Optional measurement range
(m3/h)
Output frequency range
(Hz)
15 5 30 5-60 460-3700
20 6 50 6-60 220-3400
25 8 60 8-120 180-2700
32 14 100 14-150 130-1400
40 18 180 18-310 90-1550
50 30 300 30-480 80-1280
65 50 500 50-800 60-900
80 70 700 70-1230 40-700
100 100 1000 100-1920 30-570
125 150 1500 140-3000 23-490
150 200 2000 200-4000 18-360
200 400 4000 320-8000 13-325
250 600 6000 550-11000 11-220
300 1000 10000 800-18000 9-210
Liquid Caliber Measurement lower limit
(m3/h)
Measurement limit
(m3/h)
Optional measurement range
(m3/h)
Output frequency range
(Hz)
15 1 6 0.8-8 90-900
20 1.2 8 1-15 40-600
25 2 16 1.6-18 35-400
32 2.2 20 1.8-30 20-250
40 2.5 25 2-48 10-240
50 3.5 35 3-70 8-190
65 6 60 5-85 7-150
80 13 130 10-170 6-110
100 20 200 15-270 5-90
125 30 300 25-450 4.5-76
150 50 500 40-630 3.58-60
200 100 1000 80-1200 3.2-48
250 150 1500 120-1800 2.5-37.5
300 200 2000 180-2500 2.2-30.6

1. The vortex flowmeter with simple functions includes the following parameter options:
Instrument coefficient, small signal cut-off, corresponding 4-20mA output range, sampling or damping time, accumulation clearing, etc.

2. In addition, the more complete vortex flowmeter also includes the following parameter options:
Measuring medium type, flow compensation setting, flow unit, output signal type, temperature upper and lower limit, pressure upper and lower limit, local atmospheric pressure, medium standard condition density, communication setting.


Post time: Apr-26-2021