Bronkhorst®
Instruction Manual FLOW-CONTROL series
9.17.115B
8
Increasing the inlet pressure
has a small effect on the
spring force, causing the
required
D
P to open the
membrane valve to be smaller,
resulting in a somewhat lower
flow (see graph). In practice,
deviation of the ideal straight
line is less than 0.5-1% per bar.
1.3.2
Wetted materials
The wetted parts of the instrument are made of the following materials:
Model
Materials
FC-001
Aluminum, Viton®, fiber-reinforced nitrile, SS316, PTFE
FC-002
FC-004
FC-005
Aluminum, Viton®, fiber-reinforced nitrile, Fluorosint®, Brass, Buna-N
1.3.3
Flow capacity
The table below lists the flow capacities for compatible media. Ranges are in l
n
/min (SLM; measured at 0 °C and 1.013 bar(a)),
except where otherwise stated.
Media
FC-001
FC-002
FC-004
FC-005
Air
0.02…0.6
0.02…7
0.02…25
0.02…50
N
2
0.02…0.6
0.02…7
0.02…25
0.02…50
O
2
0.02…0.55
0.02…6.5
0.02…23
0.02…47
CO
0.02…0.6
0.02…7
0.02…25
0.02…50
Ar
0.04…0.5
0.04…5.5
0.04…21
0.04…42
CO
2
0.02…0.45
0.02…5.5
0.02…20
0.02…40
CH
4
0.01…0.8
0.01…9
0.01…33
0.01…66
C
3
H
8
0.01…0.45
0.01…5.5
0.01…20
0.01…40
N
2
O
0.02…0.45
0.02…5.5
0.02…20
0.02…40
C
4
H
10
0.01…0.4
0.01…4.5
0.01…17
0.01…34
H
2
O
3…20 ml/min
4…400 ml/min
10…1000 ml/min
18…1800 ml/min
For other media, the maximum flow capacity can be calculated with the following formula:
·
Ø
vn is the volume flow under normal conditions (0 °C, 1.013 bar)
·
ñ
n is the density at normal conditions
