Answer / abhishek k sharma

vortex is natural phenomena occurring when liquid flow
around a bluff object.
For e.g when we throw the stone in water it generates vortex
in round circle.
same happens when a object is placed in between running liquid.
In vortex flow meter same is used and the frequency of
vortex generated is directly proportional to velocity of
liquid flowin.

Answer / rana mujahid

in vortax flow used a restriction in the flow path which
creat the vortax that are directally proportional to the
velocity of flow.and there used a piezoelectric meterial
these vortax strikes on piezo which creates milivoltes which
are directally prpotional to strike rate of vortax..

Answer / www.islamqa.com

Vortex flowmeter is a velocity based flow measurement device.

It consists of a flow tube with "Bluff body"/object with a specific dimensions/shape put in the flow path to generate vortices in the flow stream.

The vortices generation rate is proportional with fluid flowrate, these vortices is hitting a pressure sensor (piezoelectric type), the hitting rate is proportional to the flowrate.

The basic formula for getting fluid velocity:
V=DF/S
D:Bluff body dimension
F:vortices hitting frequency which is measured by pressure sensor.
S:Strouhal No.
Q=A.V, A:Flow path area

Adv. of no moving parts exist so we have high accuracy & stop in case of sudden flow stopping.

Disadv. of low accuracy with low flowrate.

Ahmed Sabry
Instrumentation & Control Engineer
Mob: +2 122 1367310

Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers  

---

how to use K thermocouple instead E- type without compesation cable

1 Answers  

---

How to calibrate capillary type level transmitter

0 Answers  

---

what is insdustrial vibration.who it works. give atleast 2 types of insdustrial vibration

0 Answers  

---

What kind of feedback is used in DP cells.

1 Answers   CCIE,

---

NPN transistor, SCR, Zener diode, LED, Varactor diode, Vortex meter, RTD, Resistor, Crystal

0 Answers   CCIE, RTD,

---

how can be connected thermocouple in series?what is the need?

2 Answers   Hindalco,

---

How many interlocks at turbine? Plz explain briefly

0 Answers   MRPL Mangalore Refinery and Petrochemicals Limited,

---

Explain the mechanism behind the turbine meter.

0 Answers  

---

Which wiring connection is preferred in motor for industrial use?

2 Answers  

---

What is the DIfferences between SMART transmitters and PROFIBUS DP/PA Transmitters?

4 Answers  

---

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 Answers  

---