This manometers most commonly used one It consists of glass u tube

2.  An air separator is usually a mechanical device with a
large metal box containing a blower, heating or cooling
elements and filter racks or chambers, sound
attenuators, and dampers.
 Air separators are usually connected to a duct of a
ventilation system that distributes the air and fine
particles.
Air separator

3. • The air separator works on the same principle as
the cyclone separator.
The cyclone separators sometimes are not efficient
in separating powders that contain very fine size
particles.
• In such situations, an additional provision is made
that combines the current of air with the
centrifugal force.
• This causes fines to separate along with air and
coarse particles to be thrown away by centrifugal
force which is collected at the bottom.
Principle of Air
Separator:

4.  It consists of a vertical metal cylindrical vessel with the
conical base at the bottom, Fig.1.
Construction of Air Separator:

5.  The feed inlet is fitted tangentially at the upper part of the
vessel.
 The outlet for collected solids is at the base of the conical
portion whereas the fluid outlet is at the center of the top
portion.
 The fluid outlet pipe extends down below the inlet section
to avoid air short-circuiting directly from the inlet into the
outlet.
 The rotating disc and rotating blades are fitted on the shaft
are placed at the center of the vessel.
 It has two separate outlets at the bottom for finer and
coarser/heavy particles.
Construction of Air Separator:

6.  The feed enters through the inlet tangentially in the upper
part of the vessel.
 Feed falls on the rotating blades.
 The rotating blades produce an air jet in the direction
indicated in Fig.1.
 The fine particles are blown away on the walls by the
centrifugal force generated with the air jet and are collected
at the bottom.
 The coarser particles due to their large mass travel less
distance from the center of the separator and fall in the
coarse particle collection zone which is collected at its
discharge.
Working of Air Separator:

7.  It is easy to install.
 The rotor speed, as well as airflow, is adjustable.
 It has a high production output.
 It is easy to clean and maintain.
 It is superior to the sieving method in terms of output
and quality of products.
 It is used in batch as well as continuous mode.
Advantages of Air Separator:

8.  If particles are too fine (<5 µm) its efficiency
decreases.
 It is not suitable for wet and sticky materials.
Disadvantages
of Air
Separator:

9.  It is used as a dust collector in many processes to either recover
valuable granular solid or powder from process streams.
 It can be used to separate sub-micron size particles that cannot
be handled by sieving.
 It is often used as an air pollution control device to maintain or
improve air quality in pharmaceutical production areas.
 It can be used as mist collectors to remove particulate matter in
the form of fine liquid droplets from the air to improve or
maintain the quality of air in the workplace environment.
 It can be used to remove granular solid pollutants from exhaust
gases before venting into the atmosphere.
 It can be used for the collection of metalworking fluids, and
coolant or oil mists.
Applications of Air Separator:

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