What is the most common type of orifice plate?
Concentric Bore
Concentric Bore – The most common orifice plate is the square-edged, concentric bored design. It’s used on most processes including clean liquids, gases and steam flow. It is usually made of stainless steel.
Which standard should be considered for calculation of an orifice plate?
Computation according to ISO 5167 Flow rates through an orifice plate can be calculated without specifically calibrating the individual flowmeter so long as the construction and installation of the device complies with the stipulations of the relevant standard or handbook.
How thick should an orifice plate be?
According to ISO 5167, the β = 0.33 orifice plate should have maximum plate thickness of 5 mm with a throat edge thickness between 0.5 and 0.20 mm and a downstream bevel while the recommended plate thickness per A. G. A. 3 is 3 mm.
What type of orifice tapping is commonly used?
Flange taps and radius taps are the most commonly used.
What are the different types of orifice plate?
Types of Orifice Plates
- Square Edge (Standard) Bore. For the common square edge concentric bore orifice, the bore and bevel is the standard method of limiting the plate edge thickness.
- Quadrant Edge Bore. The quadrant edge bore is an orifice with the inlet edge rounded.
- Eccentric Bore.
- Segmental Bore.
- General Description.
How do you calculate the thickness of an orifice plate?
Miller formula for orifice plate thickness calculation. Tmin ≥ SQRT [(0.681-0.651*BETA)*deltaP/Y] * pipe ID + CA; 6) If you notice any error, please let us know, so that can be rectified.
Why do we use restriction orifice plate?
The restriction orifices are used for reducing fluid pressure and are designed somewhat different from the orifice plates that are used for measuring flow rates. They are designed to slip between the piping flanges.
What are the different types of orifice plates?
There are 4 types of Orifice Plates that we will discuss:
- Concentric Orifice Plate (Hole is in the center)
- Eccentric Orifice Plate (Hole is off center)
- Segmental Orifice Plate.
- Others – such as Conical and Quadrant, and Edged Entrance types.
How do you calculate orifice?
Divide the flow of the liquid by the velocity of the liquid to determine the area of the orifice in square feet. In the above example, you would divide 8 by 2. The total area of the orifice would be 4 square feet.
What is the most common of orifice plate?
The most common orifice plate is the square-edged, concentric bored design shown below. This type of orifice plate is manufactured by machining a precise, straight hole in the middle of a thin metal plate.
What is an orifice plate?
An orifice plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases.
What is restriction orifice plate?
Orifice plate or restriction orifice is a device used for measuring volumetric flow rate in a pipe . Orifice plate works based on Bernoulli’s principle. Bernoulli’s equation states that pressure drop across the restriction orifice is directly proportional to the volumetric flow rate passing through the orifice plate.