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The following illustrations reiterate the environmental specifications in graphic form.
Psychrometric Chart
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SI (metric) units
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Barometric pressure 101.325 kPa (sea level)
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Curved lines represent % of Relative Humidity (RH)
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Vertical lines represent Dry Bulb temperature in degrees Celeius ( C )
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Points on saturation line (100% RH) represent Dew Point temperature in degrees Celcius ( C )
Dew Point Temperature, degree C
15.0
9.7
5.5
3.9
0.0
5.0
Figure 3. Environmental specifications - graph format
24.9
22.7
20.3
17.4
17.0
14.0
10.0
15.0
20.0
Dry Bulb Temperature, degree C
28.5
90%
80%
26.8
70%
60%
50%
40%
25.0
30.0
35.0
Chapter 2. Environmental specifications
Level 01f
25.0
22.5
20.0
17.5
15.0
30%
12.5
20%
10.0
7.5
10%
5.0
2.5
0.0
40.0
45.0
50.0
13
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