Desiccant Dryers DC Series

Desiccant Dryers DC Series
www.kaeser.com
Desiccant Dryers
DC Series
(Heatless regenerated) – Air flow rates 0.15 to 154.53 m³/min
Why is it necessary to dry compressed air?
The atmospheric air drawn into a compressor is a mixture of gases that
always contains water vapour. However, the amount of water vapour
that air can carry depends on the temperature. As air temperature rises
– which happens during compression – the air's ability to hold moisture
increases also. When the air is cooled, its capacity to retain moisture
reduces which causes the water vapour to condense. This condensate
is then removed in the centrifugal separator, or the air receiver, downstream from the compressor. Even then, the air can still be completely
saturated with water vapour. This is why, as the air cools further,
significant amounts of condensate can accumulate in the air distribution
piping and at take-off points. Therefore, additional drying is essential to
avoid production downtime and interruptions, as well as reduce costly
maintenance and repair work.
DC –
Small models
DC 1.5 to 7.5
Dependable and efficient
Low pressure dew points to meet every need
Compact models
DC 12 to 133
Minimum pressure drop across the dryer
and low regenerating air requirement
reduce service and operating costs, as well
as the volume of desiccant needed and
the size of filters to be installed. Intelligent
controllers (the ECO Control basic, fitted
as standard, or the optional ECO Control)
economically match machine capacity to air demand. The
dryers can be equipped with enclosures and soundproofing
and in versions for outdoor installation.
How it works
The pre-filter removes solid particles (up to 0.01 μm) and oil residue
from the air that is to be dried. The air then flows through the inlet valve
and lower diffuser into one of the two desiccant tanks. The desiccant
traps the moisture, leaving the dried compressed air to exit the desiccant tank via the upper diffuser. It then passes through a check valve,
a particulate filter and out into the air network. A small portion of the
dried compressed air is drawn off as purge air via a control valve and
alternately regenerates the desiccant in whichever tank is not in use.
Seamless integration with exceptional results
As a leading compressed air systems provider, KAESER understands
that each component plays an integral role in efficient production of clean,
quality compressed air.
Therefore, all DC Series desiccant refrigeration dryers are manufactured
to ensure the very highest standards in system reliability and performance. With KAESER knowledge and expertise, these units can then be
seamlessly integrated into carefully designed compressed air systems to
provide outstanding drying results.
The ten-minute treatment cycle
ensures low-pressure dew points to
-40 °C, even with low compressed
air demand, and provides maximum
system reliability. The space-saving,
installation-friendly design with
protective enclosure is ideally suited to
decentralised applications.
SIGMA-Dry
Made from activated aluminium oxide,
the desiccant has an exceptionally high
adsorption capacity and its regeneration
capability provides sustained low pressure
dew point performance with minimal pressure loss. The desiccant is also waterproof
and mechanically stable,
which makes it particularly
suitable for long periods
of operation. Furthermore,
specific pellet sizes are
available to ensure optimal
performance of flow diffusers
and sieve plates.
Large models
DC 169 to 1545
With an open design and suited for
pressures up to 10 bar(g), or optionally
up to 16 bar(g), these large desiccant
dryers provide the same reliability and
efficiency as their smaller counterparts.
Their modular construction enables
easy transportation and installation,
whilst excellent component accessibility greatly simplifies maintenance and service work.
Combination with activated
carbon adsorber
SIGMA Dry
Available in sizes from DC 12 upwards, DC
dryers are equipped with an ACT activatedcarbon adsorber that is precisely matched
to meet dryer capacity. This consequently
enables production of compressed air to
the very highest standards (remaining oil
content < 0.003 mg/m³). Connection of the
ACT activated carbon adsorber is made simple by the
frame construction of compact desiccant dryers up to size
DC 133.
Prefilter
Inlet valve
Desiccant tank
Desiccant
Check valve, regulating valve (not visible)
Desiccant tank
Particulate filter
Dependable drying power to -70 °C
Meticulous design and quality ensure that KAESER DC series desiccant dryers operate efficiently to provide dependable low
pressure dew point performance at continuous load, even under the toughest of conditions. The impressive drying results are
aided by generous quantities of KAESER’s high quality ‘SIGMA Dry’ desiccant, as only a fraction of the material’s initial load is
used. Consequently, this means that minimal quantities of purge air are required for desiccant regeneration, even after longer
than average periods of operation. In addition, long cycle periods reduce the number of flow optimised components required for
reliable, integrated performance, such as KAESER’s pre- and particulate filters.
Small – yet powerful!
Desiccant tank
Application-specific design enables a million load
cycles at 10 bar(g). Performance meets all requirements
as per Pressure Equipment Regulation 97/23/EC.
Continuous operation of at least ten years is possible.
DC 1.5 to 7.5
Compact and reliable
Quality components
With space saving design and easy installation, small DC desiccant dryers from
KAESER provide outstanding performance and efficiency. They are constructed of high quality components and reliably
maintain a low pressure dew point even in
continuous operation. As with all KAESER
desiccant dryers, small DC units operate in long, energy-saving cycles that are
gentle on components and consequently
require minimal maintenance. Furthermore, their high efficiency design ensures
minimal purge air is required for desiccant
regeneration.
Proven valve technology guarantees trouble-free
operation. Operational status can be viewed at a
glance via the manometer which is fitted to each tank.
All DC compact desiccant dryers are equipped as
standard with easily accessible pre- and particulate
filters from KAESER KOMPRESSOREN.
Cycle control
The user-friendly cycle control system from KAESER
enables quick and clear pressure dew point selection
of -40 °C and -70 °C.
Compact DC desiccant dryers are ideal
for decentralised air treatment applications
where space is at a premium, as they can
be simply mounted on the wall. They also
provide the perfect solution for achieving
the very low-pressure dew points required
by the packaging and pharmaceutical
industries for example, as well as for
installations in containers and production
of instrument air.
E-Pack (optional for all sizes)
SIGMA Dry
Reliable drying results with materialfriendly ten minute cycles
–8%
KAESER dryers
Other dryers
–5%
–4%
–3%
–2%
Material-friendly and energy-saving
10
8
6
4
Cycle time (mins)
–1%
2
–0%
0
Purge air required only for pressure build-up
–7%
–6%
In this version, the upstream desiccant dryer pre-filter
is equipped with an ECO-Drain electronic condensate
drain to provide highly effective condensate removal
without compressed air loss.
Small DC desiccant dryers also operate in ten-minute cycles to
achieve pressure dew points to -40 °C. By reducing the number
of switching sequences between the tanks, this method significantly reduces the load on valve components and the SIGMA
Dry desiccant. Moreover, long cycle times reduce the amount of
compressed air required to restore pressure following the desiccant regeneration phase. For example, 7.6 % of the compressed
air has to be diverted for a two-minute cycle. However, this
proportion drops to 1.3 % for a ten-minute cycle with a small DC
dryer from KAESER KOMPRESSOREN. This reduction saves
energy and extends desiccant service life. The outstanding reli-
ability and efficiency of DC
dryers is further aided by the
flow-optimised round interior
of the desiccant tank and by
streaming of air through the
desiccant via the specially
designed screen filters.
Intermittent operation
An on/off controller can help save energy in systems
with frequently interrupted cycle phases. “Reverse regeneration” (where the regeneration cycle uses air from
the downstream air receiver) is particularly reliable, as a
completely regenerated desiccant tank is always available each time the drying cycle restarts. This technique
eliminates the possibility of extreme pressure dew point
values from occurring at the outlet as a result of excessive loading of the desiccant.
DC series –
Desiccant tank
Application-specific design for a million load cycles
in accordance with AD2000. Performance meets all
requirements as per Pressure Equipment Regulation
97/23/EC. Continuous operation of at least ten years
is possible.
Powerful, compact
and reliable
DC 12 to 1545
Minimal operating
and service costs
Maximum reliability
High quality changeover switches ensure minimal
pressure drop and gentle pressure build-up to
reduce pressure fluctuations in the air network.
Pressure is also monitored during the individual
cycle phases. The volume of required purge air is
precisely adjusted to meet demand via valve and
pressure gauge, whilst operational status can be
viewed at a glance via a moisture indicator.
As with the smaller DC desiccant dryers from KAESER KOMPRESSOREN,
compact and large desiccant dryer models
alike are also easy to transport, simple
to install and provide outstanding performance. Meticulous design and high quality
durable components ensure minimal operating and service costs. This is largely due
to the very low purge air requirement of
13.5 % that can be attributed to the generous fill volume of KAESER’s high-quality
SIGMA Dry desiccant.
Service-friendly design
The radial layout of the desiccant tank’s inlets and
outlets enables the desiccant to be easily changed
using large connectors on the highest or lowest
point of the tank. Furthermore, the connectors are
easily accessible for tank inspections and the filter
housings are also within easy reach; in addition the
silencers are easily dismantled for cleaning. These
features therefore contribute to significantly reduced
servicing and maintenance costs.
Efficient operation is monitored and
managed with the multi-function ECO
CONTROL or ECO CONTROL basic
control systems.
The dryer system achieves maximum
reliability through installation of KAESER
pre- and particulate filters.
SIGMA Dry
Quiet operation
With at least two highly effective silencers (depending on model size), even standard DC series
dryer models operate extremely quietly. Special
soundproofing is also available for certain models
to provide additional sound reduction. For example,
depending on the dryer, the optional soundproofing
can reduce operating sound levels to 80 dB(A).
100,000 €
Operating cost saving over 1 year
Compared with a model requiring 18.5 % purge air
Compared with a model requiring 16.5 % purge air
10,000 €
1,000 €
DC133: A saving of nearly 50 %
of the investment cost through a
5 % saving in purge air.
100 €
8 3 9 5 6 3 6 4 1 9 73 45
12 C18 C27 C33 C50 C75 C10 C13 C16 C21 C26 C32 C38 C44 C60 C85 C11 C15
C
D D D D D D D D D D D D D D D D D D
Reliable and efficient pressure dew
point performance to -70 °C
Low-pressure dew point performance can also be achieved
& sustained with continuous system operation, even at
full load and with high inlet temperatures. With a purge air
requirement of only 13.5 % (determined over one cycle
under reference conditions), the amortisation period for
these highly efficient dryers is far shorter than for comparable conventional systems (see graph). High performance is
Assuming: Perfect operation under reference conditions (purge air requirement 13.5 %),
PDP -40 °C, ten-minute cycle time (5 min adsorption, 4 min desorption, 1 min pressure build-up),
running time 8000 operating hours/yr., compressed air generating costs 2 Euro cent/per m³,
current DC list price.
achieved using large dryer tanks filled with generous volumes of KAESER’s quality SIGMA Dry desiccant to ensure sufficient
drying capacity even under extreme load conditions. Stainless steel diffusers provide optimal airflow over the desiccant to
ensure an even drying load. Purge air requirement is further reduced, as the heat gathered during adsorption is temporarily
stored in the desiccant and can be used for regeneration. The drying process is carried out in long energy-saving cycles that
are kind to components due to the minimal number of switching and pressure build-up phases.
ECO CONTROL
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p1
User-friendly
p2
User-friendly control panel developed and constructed to
KAESER’s exacting design standards. Simple pressure
dew point adjustment in accordance with ISO classification. Load-dependent control with easy-to-read display
and five language options.
p3
ECO CONTROL
basic
Intelligent control
for maximum savings
p1
p2
ECO CONTROL
p3
Service-friendly
ECO CONTROL
p1
Units feature an easy-to-read display panel with visual
system overview and LEDs on the pressure switch,
valve, and tank icons to provide clear, precise information regarding operational and servicing status.
The exact valve switching sequence can be checked
in the manual test mode.
p2
p3
www.kaeser.com
p1
p2
Networking with
SIGMA AIR MANAGER
p3
Efficient – Service-friendly – Versatile
Both ECO CONTROL versions are equipped as standard with a remote on/off and floating contact that
can be monitored for alarm situations. With the ECO
CONTROL system it is possible to connect and display
data from a pressure dew point measuring device via
an analogue input.
A choice of two demand-oriented, energy-saving control systems is
available for DC 12 dryer models upwards. As you might expect from
KAESER products, each features a user-friendly control panel that
combines comprehensive functionality with ease of use.
-94°F
-70°C
2
-40°F
-40°C
3
-4°F
-20°C
4
+38°F
+3°C
30%
40%
50%
60%
70%
KW
+
80%
90%
V max
100%
80%
70%
60%
50%
40%
30%
20%
10%
0%
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
Regeneration
air saving (%)
Regeneration time (min)
100% 90% 80% 70% 60% 50% 40% 30%
p1
p2
p3
Temperature
sensors
V
V
V
V
V
V
V
V
Temperature
sensors
Temperature
sensors
Temperature
sensors
Eco Control: Pressure dew point
trend recognition control
ECO CONTROL significantly reduces energy
consumption through variable flow volume,
pressure and temperature parameters. The
pressure dew point trend recognition control is more cost-effective and reliable than
conventional systems, as it reacts instantly to
temperature differences in the desiccant and not
to increases in pressure dew point at the dryer
outlet. New measurements and relative temperature difference comparisons are carried out
Dryer utilisation (%)
Regeneration air saving (%)
Enabling intermittent operation and system connectivity, both systems
are particularly service-friendly thanks to their comprehensive status &
maintenance displays.
V min
ISO CLASS
1
Regeneration time (min)
For maximum energy savings, the load dependent ECO CONTROL
in “E-Pack” models uses a patented and ultra-reliable pressure dew
point trend recognition system.
ECO CONTROL BASIC
Standard DC models are equipped with the efficient ECO CONTROL
basic system which features a highly effective purge air save mode.
ECO CONTROL basic:
Significant purge air savings
With Eco Control basic, the dryer is able to reduce
its regeneration cycle to a value below the set rated
flow value. For example, if the dryer is purchased with
future compressed air system expansion in mind and is
operating at only 80 % capacity, its regeneration time
can be reduced from 4 minutes to 3.2 minutes –
a purge air saving of 20 %. This feature allows drying
capacity in the compressed air system to be varied
according to actual demand.
for each new cycle. As tank switch-over occurs only after the desiccant has been used to its full potential, each drying phase
can be extended by up to 30 minutes, allowing significant savings in purge air consumption.
• No need for a costly pressure dew point measuring device.
• The associated regular calibration and maintenance costs are also eliminated.
• A further advantage over a pressure dew point measuring device is that temperature sensor operation can be easily
checked via reliable open circuit monitoring.
Equipment – DC
DC 1.5 – 7.5
DC 12 – 133
Dimensions
DC 169 – 1545
Standard version
E-Pack
Standard version
E-Pack
Standard version
E-Pack
Open design
–
–
●
●
●
●
Steel enclosure
●
●
○
○
–
–
ECO CONTROL, dew point control, incl. ECO DRAIN with alarm contact on pre-filter
–
–
–
●
○
●
ECO CONTROL BASIC, with purge air saving mode
–
–
●
–
●
–
KAESER time controller
●
●
–
–
–
–
Intermittent operation (remote contact)
●
●
●
●
●
●
Filtration
Pre- and particulate filter, incl. mechan. differential pressure gauge, included
●
●
●
●
●
●
Drain
Float drain in pre-filter
●
–
●
–
●
–
ECO DRAIN with alarm contact installed and pre-wired on pre-filter
–
●
–
●
–
●
Frost protection
Steel enclosure for indoor installation with resistance heating for Ta to -20°C
–
–
○
○
–
–
Sound insulation
Sound insulation Basic <= 80 dB(A) (only in combination with steel enclosure option)
–
○
–
○
○
○
Sound insulation Plus <= 85 dB(A)
–
–
–
–
○
○
Pressure relief valves
Pressure relief valve per tank
–
–
○
○
○
○
Working pressure
Maximum working pressure 10 bar
●
●
–
–
●
●
Maximum working pressure 16 bar
–
–
●
●
○
○
Two desiccant tanks with changeover regulated as per demand
●
●
●
●
●
●
Simple filling and discharge at tank ends
●
●
●
●
●
●
High quality individual components
–
–
●
●
●
●
Complete desiccant filling of SIGMA DRY
●
●
●
●
●
●
Optical humidity indicator
–
–
●
●
●
●
Control air filter
–
–
●
●
●
●
Enclosure
Controller
Process design
Silicone-free version as per VW test standard PV 3.10.7
Models DC 1.5 to DC 7.5 E
H
W
D
Models DC 12 to DC 133 E
H
D
W
Models DC 169 to DC 1545
● Standard ○ Option – Not available
Technical specifications
Flow rate *)
Standard version
Connection
Model
Design
Weight
Enclosed
Enclosed
Enclosed
Enclosed
Enclosed
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
775 x 778 x 170
775 x 778 x 170
775 x 778 x 170
775 x 930 x 217
775 x 930 x 217
1950 x 750 x 750
1950 x 750 x 750
1970 x 750 x 750
1980 x 1150 x 750
1980 x 1150 x 750
1990 x 1150 x 750
1990 x 1150 x 750
2000 x 1150 x 750
1930 x 1500 x 1300
1950 x 1500 x 1400
2106 x 1500 x 1450
2105 x 1500 x 1500
2190 x 1500 x 1700
2283 x 1700 x 1750
2242 x 1950 x 1900
2439 x 2400 x 2120
2709 x 2690 x 2300
2568 x 2820 x 2560
37
54
62
78
89
165
210
260
310
310
460
550
615
1000
1225
1475
1700
1930
2180
2315
3860
4500
5445
m³/min
0.15
0.28
0.42
0.58
0.75
1.17
1.83
2.67
3.33
5.00
7.50
10.83
13.33
16.88
21.47
26.62
32.33
38.63
44.35
60.10
85.85
117.33
154.53
G
G
G
G
G
R 3 /4
R 3 /4
G
G 1 1/4
G 1 1/4
G
G2
G
DN 80
DN 80
DN 80
DN 80
DN 100
DN 100
DN 100
DN 100
DN 150
DN 150
DC 1.5
DC 2.8
DC 4.2
DC 5.8
DC 7.5
DC 12
DC 18
DC 27
DC 33
DC 50
DC 75
DC 108
DC 133
DC 169
DC 215
DC 266
DC 323
DC 386
DC 444
DC 601
DC 859
DC 1173
DC 1545
E-Pack version
Dimensions
HxWxD
mm
Model
Design
Dimensions
HxWxD
mm
Enclosed
Enclosed
Enclosed
Enclosed
Enclosed
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
Open
775 x 778 x 170
775 x 778 x 170
775 x 778 x 170
775 x 930 x 217
775 x 930 x 217
1950 x 750 x 750
1950 x 750 x 750
1950 x 750 x 750
1980 x 1150 x 750
1990 x 1150 x 750
1990 x 1150 x 750
1990 x 1150 x 750
1990 x 1150 x 750
1930 x 1500 x 1300
1950 x 1500 x 1400
2106 x 1500 x 1450
2105 x 1500 x 1500
2190 x 1500 x 1700
2283 x 1700 x 1750
2242 x 1950 x 1900
2439 x 2400 x 2120
2709 x 2690 x 2300
2568 x 2820 x 2560
kg
DC 1.5 E
DC 2.8 E
DC 4.2 E
DC 5.8 E
DC 7.5 E
DC 12 E
DC 18 E
DC 27 E
DC 33 E
DC 50 E
DC 75 E
DC 108 E
DC 133 E
DC 169 E
DC 215 E
DC 266 E
DC 323 E
DC 386 E
DC 444 E
DC 601 E
DC 859 E
DC 1173 E
DC 1545 E
*) Equivalent to ISO 7153, Option A1: Reference point 1 bar(abs), 20 °C, inlet pressure 7 bar(a), inlet temperature +35 °C, ambient temperature 20 °C
Note: Electrical supply: 95 - 240 V / 1 Ph / 50-60 Hz
Correction factors: DC(E) Nominal flow rate
Weight
kg
37
54
62
78
89
181
220
308
398
398
531
650
815
1000
1225
1475
1700
1930
2180
2315
3860
4500
5445
H
DC 1.5 - 7.5
Inlet temperature
25 - 39 °C
40 °C
45 °C
50 °C
Working pressure
5bar
6bar
7bar
8bar
9bar
10bar
0.56
0.55
0.53
0.50
0.77
0.75
0.72
0.67
1.00
0.98
0.94
0.88
1.13
1.10
1.06
0.99
1.25
1.23
1.18
1.10
1.38
1.35
1.29
1.21
5bar
7bar
9bar
11bar
13bar
15bar
0.75
0.74
0.74
0.73
0.71
0.71
0.69
0.68
1.00
0.99
0.98
0.97
0.95
0.94
0.92
0.90
1.12
1.11
1.10
1.08
1.06
1.05
1.03
1.01
1.22
1.21
1.20
1.19
1.16
1.15
1.13
1.10
1.32
1.31
1.30
1.28
1.26
1.24
1.22
1.19
1.41
1.40
1.39
1.37
1.34
1.33
1.30
1.27
W
D
DC 12 - 1545
Inlet temperature
35 °C
37 °C
39 °C
41 °C
43 °C
45 °C
47 °C
49 °C
Example:
Specified:
Flowrate = 5 m³/min
Inlettemp = 47 °C
p = 7 bar(a)
Working pressure
Intention: Corrected flow rate
Result:
Factor = 0.92
Flowcorr.= 0.92 x 5 m³/min
= 4.60 m³/min
Easy to transport, easy to connect
With a maximum height of only 2000 mm the desiccant dryer compact models can be transported on a
standard euro-palette. The horizontally and vertically
offset inlet and outlet ports provide the user with a
convenient choice of connecting pipeline layouts.
The air outlet from compact models can be controlled
by a changeover valve that eliminates the need for a
return air line for the intermittent operation mode.
www.kaeser.com
Quality classes as per ISO 8573.1
and pressure dew point
Pressure dew point
Class 6 +10 °C
Class 5 + 7 °C
Fields of use for desiccant dryers
KMM
Membrane
dryer
Refrigeration dryer
Pressure dew points of up to -70 °C are required for compressed air
supplies in numerous industries such as the electronics, pharmaceutical
and food industries. They are also necessary for production of process
air and for air applications susceptible to frost. DC desiccant dryers from
KAESER KOMPRESSOREN combine outstanding reliability, efficiency
and ease of maintenance to ensure the necessary low-pressure dew point
performance required to meet even the most demanding compressed air
needs.
Class 4 + 3 °C
Desiccant dryer
Class 3 -20 °C
DC
Heatless regenerated
Class 2 -40 °C
Class 1 –70 °C
DN/DW
Heat regenerated
Flow rate
Compressed air treatment with desiccant dryer
Solids1 Water
Pure air and clean room
technology, pharmaceuticals, dairies, breweries
1
1
Paint spraying installations
4)
KE
KE
KD
ACT
AR
1
Optional
filtration
2
1-3
1-3
1-3
KE ZK
1
KBE4
KEA
DD3
1
DHS
1
DD3
AR
DHS
1
Especially dry conveying
air, paint spraying, fine
pressure controllers
3)
1-3
DHS
Process air,
pharmaceuticals
2)
DHS
1
DHS
Microchip production,
optics and foodstuffs
1)
1-3
Oil2
Explanation
Installation for
fluctuating air demand
Compressor
THNF
KD
KE
2
AQUAMAT
Achievable particle class with expert-implemented pipework and commissioning.
Achievable total oil content with use of recommended compressor oils and unloaded intake air.
High temperature filters and possibly an aftercooler are required downstream from heat-regenerated desiccant dryers.
The use of an ‘Extra Combination’ (a filter combination comprising a KB and downstream KE filter) is recommended for critical
applications requiring exceptionally high compressed air purity (e.g. in the electronics and optics sectors).
ACT
Activated carbon adsorber
AQUAMAT
AQUAMAT
AT
Desiccant dryer
DHS
Air-main charging system
DLB
Air receiver
ECD
ECO DRAIN
KA
Activated carbon filter, adsorption
KB
Coalescence filter, Basic
KBE
Extra combination
KD
Dust filter
KE
Coalescence filter, Extra
KEA
Carbon combination
T
Refrigeration dryer
THNF
Bag filter
ZK
Centrifugal separator
Compressed air quality classes to ISO 8573-1(2010):
Water
Class
Max. particle count per m³ of a particle size
with d [μm]*
0.1 ≤ d ≤ 0.5
0
1
2
3
4
5
0.5 ≤ d ≤ 1.0
1.0 ≤ d ≤ 5.0
e.g. Consult KAESER regarding
pure air and cleanroom technology
≤ 20,000
≤ 400,000
not defined
not defined
not defined
≤ 400
≤ 6,000
≤ 90,000
not defined
not defined
≤ 10
≤ 100
≤ 1,000
≤ 10,000
≤ 100,000
Oil
Class
Pressure dew point [°C]
Class
Total oil concentration
(fluid, aerosol + gaseous) [mg/m³]*
0
e.g. Consult KAESER regarding
pure air and cleanroom technology
0
e.g. Consult KAESER regarding
pure air and cleanroom technology
1
2
3
4
5
6
≤ – 70 °C
≤ – 40 °C
≤ – 20 °C
≤ + 3 °C
≤ + 7 °C
≤ + 10 °C
1
2
3
4
X
≤ 0.01
≤ 0.1
≤ 1.0
≤ 5.0
> 5.0
Class
Particle concentration Cp [mg/m³]*
Class
Concentration of liquid water
CW [g/m³]*
6
7
X
0 < Cp ≤ 5
5 < Cp ≤ 10
Cp > 10
7
8
9
X
CW ≤ 0.5
0.5 < CW ≤ 5
5 < CW ≤ 10
CW ≤ 10
*) At reference conditions 20°C, 1 bar(a), 0% humidity
KAESER KOMPRESSOREN SE
P.O. Box 2143 – 96410 Coburg – GERMANY – Tel +49 9561 640-0 – Fax +49 9561 640130
e-mail: [email protected] – www.kaeser.com
P-721ED.13/15 Specifications are subject to change without notice.
Solid particles / dust
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