™/S, MOLBLOC TERMINAL OPERATION AND MAINTENANCE MANUAL
© 1995 - 2010 Fluke Corporation, DH Instruments Division
Page 8
1.2.5.1.5
molbloc-L Ranges with High Pressure Calibrations
Table 3:
molbloc-L Ranges with High Pressure Calibrations
molbloc-L SIZE AND FULL SCALE FLOW (sccm @ 0 ºC)
GASES
SIZE
1E1
SIZE
5E1
SIZE
1E2
SIZE
2E2
SIZE
5E2
SIZE
1E3
SIZE
5E3
SIZE
1E4
SIZE
3E4
SIZE
1E5
INE
RT
Nitrogen
N
2
20
100
200
400
1,000
2,000
10,000
20,000
40,000
7,500
N/A
Argon
Ar
20
100
200
400
1,000
2,000
10,000
17,000
35,000
6,000
N/A
Helium
He
20
100
200
400
1,000
2,000
10,000
20,000
65,000
N/A
Sulfur Hexafluoride
SF
6
25
100
15
120
30
250
50
600
150
2,000
300
2,000
1,400
6,200
2,800
--
--
N/A
Xenon
XE
20
100
150
350
650
1,700
3,350
950
11,000
1,900
11,000
5,700
N/A
F
L
A
M
M
A
B
L
E
Butane
C
4
H
10
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Ethane
C
2
H
6
40
200
350
50
700
100
1,800
200
4,000
6,000
2 300
20,000
4,500
20,000
13,000
N/A
Ethylene
C
2
H
4
40
200
350
700
2,000
4,000
7,000
2,000
22,000
4,000
22,000
12,700
N/A
Hydrogen
H
2
40
200
400
900
2,000
4,500
22,000
45,000
130,000
N/A
Methane
CH
4
35
175
350
700
1,700
3,500
13,000
2,000
33,000
42,000
12,000
N/A
Propane
C
3
H
8
50
200
25
200
50
400
100
1,000
250
3,500
500
3,500
2,600
11,000
5,400
--
--
N/A
F
L
U
O
R
O
-
CARBO
NS
Carbon
Tetrafluoride
CF
4
20
100
200
400
1,000
2,000
3,700
1,200
12,000
2,400
12,000
7,300
N/A
Hexafluorethene
C
2
F
6
25
100
15
120
30
250
50
600
150
2,000
300
1,800
1,500
6,000
3,000
--
--
N/A
Trifluoromethane
CHF
3
25
125
240
30
450
60
1,200
150
2,500
4,000
1,500
12,000
3,000
12,000
8,800
N/A
O
T
H
E
R
Air
Air
20
100
200
400
1,000
2,000
10,000
20,000
40,000
7,200
N/A
Carbon Dioxide
CO
2
25
125
250
500
1,250
2,500
6,600
1,400
20,000
2,500
20,000
8,800
N/A
Carbon Monoxide
CO
20
100
200
400
1,000
2,000
10,000
20,000
40,000
7,500
N/A
Nitrous Oxide
N
2
O
25
125
250
500
1,250
2,500
11,000
1,500
20,000
3,000
20,000
9,000
N/A
Octafluorocyclobutane
2
C
4
F
8
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Oxygen
O
2
20
100
200
400
1,000
2,000
10,000
20,000
40,000
6,500
N/A
A bold value indicates that the maximum flow is limited by the maximum Reynolds number value of 1 200 which is reached
before the normal differential pressure range is reached. In that case, the second value gives the minimum flow for which
measurement uncertainty (accuracy) is equal to the nominal uncertainty specification. Divide the second value by 10 when
using molbox RFM microrange option.
Where there is no value in the field (–), this indicates that the maximum Reynolds number is reached before the differential
pressure reaches 5 kPa (1 kPa in the case of the 1E5 molbloc), therefore calibration with that gas is not useful.
1
Due to low vapor pressure, only downstream calibration type is available.
2
The operating pressure range is greater than the vapor pressure value for this gas.
