Instrument Air Packages
Northwest Equipment Ltd. has extensive experience in the design,
construction and commissioning of Instrument Air Packages for Canadian
as well as international installations.
Definition Examples
Complete Building Package
Definition
An Instrument Air Package consists of all the necessary equipment –
air compressors, air receiver, air dryer and air filtration - to enable
the supply of instrument quality air to a facility. Instrument quality
air must be free of contaminants and water vapour, and should conform to
the international ISO standard for compressed air quality. These
standards are:
| Maximum number of particles |
0.1 - 0.5 micron/m3 |
| Oil Vapour |
0.1 - 0.01 mg/m3 |
| Water Pressure Dewpoint |
-40 - -60 degrees C |
Components of the Typical Package
1. Air Compressors - Facilities are dependent upon instrument air
to maintain their operation. Accordingly, most Instrument Air
Packages include two compressors - one operating - the other a
redundant standby.
2. Air Receiver - An Air Receiver stores compressed air to provide
additional capacity when required.
3. Air Dryer - An Air Dryer removes water vapour from the compressed
air to ensure that no water will condense from the air when used. The
typical pressure dewpoint range is -40 to -100 degrees C.
4. Air Filtration - Filters are required to remove oil vapour and
particulates from the air stream.
5. Heated Enclosure - The completed air compressor package is usually
installed in a self-framed, heated enclosure.
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Examples - Typical Packages
Size - HP
|
Air Compressor
Options
|
Air Dryer
|
Air Receiver - GAL
|
Air Filtration
|
| 2 - 5 |
Reciprocating |
Heatless Regenerative Air Dryer |
60 - 120 |
Oil Coalescing & Particulate Removal |
| 5 - 30 |
Reciprocating, Rotary Vane, Rotary Screw |
Heatless Regenerative Air Dryer |
120 - 400 |
Oil Coalescing & Particulate Removal |
| 30 - 300 |
Reciprocating, Rotary Vane, Rotary Screw |
Heatless Regenerative Air Dryer |
240 - 2000 |
Oil Coalescing & Particulate Removal |
2 - 5 HP Example:
 |
TYPICAL PACKAGE
• 5 HP reciprocating air compressor
• 80 Gallon vertical air receiver
• Airtek heatless regenerative air dryer
Any custom configuration available.
Package shown is for illustrative purposes only.
|
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5 - 30 HP Examples:
 |
TYPICAL PACKAGE
• Duplex rotary vane air compressors
• 15 hp TEFC motors
• Local control panel
• 120 gallon horizontal air receiver
• Heatless regenerative air dryer
Any custom configuration available.
Package shown is for illustrative purposes only.
|
| |
 |
 |
TYPICAL PACKAGE
• Duplex rotary screw air compressors
• 10 hp TEFC motors
• Local control panel
• 120 gallon horizontal air receiver
• 400 gallon vertical dry air receiver
• Heatless regenerative air dryer
Any custom configuration available.
Package shown is for illustrative purposes only.
|
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30 - 300 HP Examples:
 |
TYPICAL PACKAGE
• Duplex reciprocating air compressors
• TEFC motors
• Local control panel
• Duplex regenerative air dryers
• Sun shade for extreme climate conditions
Any custom configuration available.
Product shown is for illustrative purposes only.
|
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Complete Building Package:
 |
A completely self-sufficient instrument air
package can be packaged within a enclosure and shipped to the
site for simplified installation and commissioning.
Even the smallest of air compressor packages can be provided
as a complete, pre-engineered and ready-to-operate system.
Example
[L250 Skid Assembly] |
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