Flow Meter > Vortex Flow Meter

VORTEX FLOW METERS

  • Description
  • Flow Range Table
  • Application
  • Specification

Description:

An obstruction in a fluid flow creates vortices in a downstream flow. Every obstruction has a critical fluid flow speed at which vortex shedding occurs. Vortex shedding is the instance where alternating low pressure zones are generated in the downstream. These alternating low pressure zones cause the obstruction to move towards the low pressure zone. With sensors gauging the vortices the strength of the flow can be measured.

Flow Range Table

Liquid
Size Qmin(m3/h) Qmax(m3/h)
DN15 0.19 3.56
DN20 0.34 6.33
DN25 0.54 9.89
DN32 0.9 16.2
DN40 1.4 25.3
DN50 2.1 39.6
DN65 3.6 66.9
DN80 5.4 101
DN100 8.5 158
DN125 13.3 247
DN150 19.1 356
DN200 34 633
DN250 53 989
DN300 776.3 1424
Gas
Size Qmin(m3/h) Qmax(m3/h)
DN15 1.9 40
DN20 3.4 71
DN25 5.3 111
DN32 8.7 182
DN40 13.6 285
DN50 21.2 445
DN65 35.8 752
DN80 54.3 1139
DN100 84.8 1780
DN125 133 2781
DN150 191 4005
DN200 340 7121
DN250 530 11127
DN300 763 16023

such as above, the flow range of liquid is calculated according to the water density which the teperature is 25 degree and pressure is normal, if the density is different with water, then need to calculate again.

such as above, the flow range of Gas is calculated according to the air density which the teperature is 25 degree and the pressure is normal, if the density is different with Gas, then need to calculate again.

The advanced version of SDVFM Series Vortex Flow Meter have teperature & pressure compensationfeature. Sensors which sense fluid varying temperature & pressure & process these values & display the flow within accuracy limit therefore, change in temperature & pressure of fluid does not affect performance of Vortex Flowmeter.

Application

Medium Condition Application
GAS Clean Yes
Dirty Yes
Liquid Clean Yes
Dirty No
Corrosion No
Steam Saturation Yes
Overheated Yes

Specification

Nominal diameter : DN15-DN300
Rated pressure : PN16, PN25, PN40
Body Material : SUS304
Detection Probe : 316L
Power Supply : 24VDC/220VAC
Output signal : 4-20 mA, pulse
Communication Port : RS485(Modbus), Low & High Flow Alarm
Gas flow rate : 2 m/s-56m/s
Linearity : <1.0%
Repeatability : 0.33%
Display : flow rate, total amount, frequency with nonlinear correction function
Flow units : m3/h,kg/h,t/h with density compensation
Temperature range : 280°C
Protection grade : IP65