Specifications

1. INTRODUCTION
Page 7 © 1998-2007 DH Instruments, a Fluke Company
1.2.4.1.4 molbloc-L Ranges with High Pressure Calibrations
Table 3. molbloc-L Ranges with High Pressure Calibrations
- full mod, high pressure
- single P, high pressure
molbloc-L SIZE AND FULL SCALE FLOW (sccm)
GASES
SIZE
1E1
SIZE
5E1
SIZE
1E2
SIZE
2E2
SIZE
5E2
SIZE
1E3
SIZE
5E3
SIZE
1E4
SIZE
3E4
SIZE
1E5
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
INERT
Xenon XE
20 100 150 350 650 1 700
3 350
950
11 000
1 900
11 000
5 700
N/A
Butane
[2]
C
4
H
10
* * * * * * * * * 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
FLAMMABLE
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
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
FLUORO-
CARBONS
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
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
Oxygen O
2
20 100 200 400 1 000 2 000 10 000 20 000
40 000
6 500
N/A
Octafluorocyclobutane
[2]
C
4
F
8
* * * * * * * * * N/A
OTHER
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
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 relative accuracy
is ± 0.5 % of the measured value. With the microrange option, this value is divided by 10 (see Section 1.2.2.2).
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.
[2] The operating pressure range is greater than the vapor pressure value for the gas.