Answer / mohammed abdul rahman

Orifice plates which are used in flow measurement are mostly concentric "square-edge" type. The bore of the orifice is not constant when one moves from the upstream side to the downstream side along the cross section. The bore size is constant for a few mm only and then expands till it reaches the downstream face. This inclined cut is called the bevel in an orifice.
The main reason to have a bevel in the orifice is to avoid turbulence thereby providing more accuracy to the measurement. Restriction Orifice plates are not beveled since their intent is to reduce the pressure only.

Answer / salis

If the orifice plate is relatively thick (1/8 or an inch or more), it may be necessary to bevel the
downstream side of the hole to minimize its contact with the fluid stream.

How to work togather like sov,limit switch,proxy switch and booster in xv

0 Answers  

---

i am going to attend ongc exam this coming june for Graduate Engineer Trainee post if anybody knows the question pattern or have experience plz share it with me

3 Answers   ONGC,

---

In vortex flow meter how can measure the frequency of vortex generated by vortex flow meter

4 Answers   Cadila,

---

why we are using MARSHALLING PANEL? what is the role?

5 Answers  

---

What is megering????

2 Answers  

---

---

What are the key features of a Distributed Control System? describing the various layers (sensor through to business system interfaces) as well as the hardware, software and security aspects of the DCS.

0 Answers  

---

3element

2 Answers  

---

what is seebeck effect?

7 Answers  

---

why we use 4-20 mA to do calibration of the instruments.why we cant use 0-20 mA?

8 Answers   Emerson, IEM,

---

what is ILD

1 Answers  

---

What unit is used for measuring comp. outlet flow. it is CFM, M3/hr or NM3/hr. ?

5 Answers   Jk Tyres,

---

i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.

0 Answers   OEG,

---