6500 Series Purge and Pressurization System
I/O Manual
28
3.5 Flow rate curves
Standard vent pressure/flow curves:
The enclosure pressure vs. flow rate curves represent the EPV-6500-__-01, 03, 05, vents. This
corresponds to the enclosure pressure and is independent of the valve used, provided it can deliver the
flow rate required.
These curves represent a completely sealed enclosure, which may not be representative of the customer's
enclosure. The flow in these curves are measured at the vent that represents the exhaust of the system.
More flow may be required to reach the enclosure pressure due to leakages from gaskets, seals, windows,
etc.
Note!
These graphs should only be used for representation of flow and pressure through each type of vent and
not used for calculating purge time. They can be used for estimating purge time but the actual purge time
will be automatically calculated by the 6500 control unit. These graphs are used to determine which vent
type will be best suited for the application.
EPV-6500-__-01: Normally used for large enclosures for shorter purge times.
EPV-6500-__-03: Normally used for medium or large enclosures were the leakage rate is critical
and a short purging time is required.
0.0
2.0
4.0
6.0
8.0
10.0
12.0
0 100 200 300 400 500 600 700 800 900
mbar
l/min
Enclosure press. vs flow
EPV-6500-__-01
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
0 100 200 300 400 500 600 700 800 900
mbar
Enclosure press. vs flow
EPV-6500-__-03
l/min
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