Wetted Materials; Flow Capacity - BRONKHORST FLOW-CONTROL Series Instruction Manual

Increasing the inlet pressure
has a small effect on the
spring force, causing the
required DP 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 Aluminum, Viton®, fiber-reinforced nitrile, Fluorosint®, Brass, Buna-N
FC-004
FC-005
1.3.3

Flow capacity

The table below lists the flow capacities for compatible media. Ranges are in l
except where otherwise stated.
Media FC-001
Air 0.02...0.6
N 0.02...0.6
2
O 0.02...0.55
2
CO 0.02...0.6
Ar 0.04...0.5
CO 0.02...0.45
2
CH 0.01...0.8
4
C H 0.01...0.45
3 8
N O 0.02...0.45
2
C H 0.01...0.4
4 10
H O 3...20 ml/min
2
For other media, the maximum flow capacity can be calculated with the following formula:
8
Bronkhorst®
FC-002
0.02...7
0.02...7
0.02...6.5
0.02...7
0.04...5.5
0.02...5.5
0.01...9
0.01...5.5
0.02...5.5
0.01...4.5
4...400 ml/min
· Øvn is the volume flow under normal conditions (0 °C, 1.013 bar)
· ñn is the density at normal conditions
Instruction Manual FLOW-CONTROL series
/min (SLM; measured at 0 °C and 1.013 bar(a)),
n
FC-004 FC-005
0.02...25 0.02...50
0.02...25 0.02...50
0.02...23 0.02...47
0.02...25 0.02...50
0.04...21 0.04...42
0.02...20 0.02...40
0.01...33 0.01...66
0.01...20 0.01...40
0.02...20 0.02...40
0.01...17 0.01...34
10...1000 ml/min 18...1800 ml/min
9.17.115B