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MOLBOX1+™/MOLBOX1+S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL
Table 15: C3H8. molbloc-S Flow in Propane at Various molbloc Upstream Pressures
Propane
Ratio = 0.789
C3H8
K
20 kPa
F
DESIGNATOR
[sccm/ kPa]
(3 psia)
1E1-S
10
2E1-S
20
5E1-S
50
1E2-S
100
2E2-S
200
5E2-S
500
1E3-S
1,000
2E3-S
2,000
5E3-S
5,000
1E4-S
10,000
157.7
[1] Flow values in table are valid only when critical flow is established.
[2] When volumetrically based mass flow units with reference temperatures other than 0°C are used, flow values
[3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa)
[4] Operation in this gas is limited to lower pressures due to the gas vapor pressure.
Table 16: CF4. molbloc-S Flow in Carbon Tetrafluoride at Various molbloc Upstream Pressures
Carbon Tetrafluoride
Ratio = 0.563
CF4
K
20 kPa
F
DESIGNATOR
[sccm/ kPa]
(3 psia)
1E1-S
10
2E1-S
20
5E1-S
50
1E2-S
100
2E2-S
200
5E2-S
500
1E3-S
1,000
2E3-S
2,000
5E3-S
5,000
1E4-S
10,000
112.6
[1] Flow values in table are valid only when critical flow is established.
[2] When volumetrically based mass flow units with reference temperatures other than 0°C are used, flow values
[3] Minimum upstream pressure to achieve critical flow with atmospheric pressure (approximately 100 kPa)
[4] Operation in this gas is limited to lower pressures due to the gas vapor pressure.
© 1995 - 2010 Fluke Corporation, DH Instruments Division
molbloc-S MASS FLOW RATE (slm @ 0 °C) WHEN molbloc-S UPSTREAM PRESSURE IS:[1][2]
Minimum
50 kPa
100 kPa
witout
(7 psia)
(15 psia)
vacuum
0.2
0.4
0.8
0.3
0.8
1.6
0.8
2.0
3.9
1.6
3.9
7.9
3.2
7.9
15.8
7.9
19.7
39.4
15.8
39.4
78.9
31.5
78.9
157.7
78.9
197.2
394.4
394.4
788.7
will generally be higher; the flow values for a given molbloc and upstream pressure are approximately 7%
higher when expressed in slm at 20°C. Flow values at a given pressure may vary by up to ± 2% due to
flowpath machining tolerances.
downstream of molbloc-S (no vacuum).
molbloc-S MASS FLOW RATE (slm @ 0 °C) WHEN molbloc-S UPSTREAM PRESSURE IS:[1][2]
Minimum
50 kPa
100 kPa
witout
(7 psia)
(15 psia)
vacuum
0.1
0.3
0.6
0.2
0.6
1.1
0.6
1.4
2.8
1.1
2.8
5.6
2.3
5.6
11.3
5.6
14.1
28.1
11.3
28.1
56.3
22.5
56.3
112.6
56.3
140.7
281.4
281.4
562.9
will generally be higher; the flow values for a given molbloc and upstream pressure are approximately 7%
higher when expressed in slm at 20°C. Flow values at a given pressure may vary by up to ± 2% due to
flowpath machining tolerances.
downstream of molbloc-S (no vacuum).
Page 18
200 kPa
500 kPa
(3)
(30 psia)
(70 psia)
1.3
1.6
3.9
2.3
3.2
7.9
5.5
7.9
19.7
10.5
15.8
39.4
20.8
31.5
78.9
48.8
78.9
197.2
97.5
157.7
394.4
181.4
315.5
788.7
453.2
788.7
1,971.8
906.5
1,577.4
3,943.6
200 kPa
500 kPa
(3)
(30 psia)
(70 psia)
0.9
1.1
2.8
1.8
2.3
5.6
4.1
5.6
14.1
7.9
11.3
28.1
15.7
22.5
56.3
36.3
56.3
140.7
69.9
112.6
281.4
134.1
225.1
562.9
323.4
562.9
1,407.2
646.9
1,125.7
2,814.3
700 kPa
1.2 MPa
2 MPa
(100 psia)
(174 psia)
(290 psia)
[4]
5.5
n/a
n/a
[4]
11.0
n/a
n/a
[4]
27.6
n/a
n/a
[4]
55.2
n/a
n/a
[4]
110.4
n/a
n/a
[4]
276.1
n/a
n/a
[4]
552.1
n/a
n/a
[4]
1,104.2
n/a
n/a
[4]
2,760.5
n/a
n/a
[4]
5,521.0
n/a
n/a
700 kPa
1.2 MPa
2 MPa
(100 psia)
(174 psia)
(290 psia)
[4]
3.9
n/a
n/a
[4]
7.9
n/a
n/a
[4]
19.7
n/a
n/a
[4]
39.4
n/a
n/a
[4]
78.8
n/a
n/a
[4]
197.0
n/a
n/a
[4]
394.0
n/a
n/a
[4]
788.0
n/a
n/a
[4]
1,970.0
n/a
n/a
[4]
3,940.1
n/a
n/a
[4]
[4]
[4]
[4]
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[4]
[4]
[4]
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