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Oxygen Gas Flows Safely and Economically with
the Rosemount 8800C Vortex Flowmeter
Velocity Constraints in an Oxygen Gas Application
In an oxygen gas application, there are velocity constraints that must be met to prevent
ignition due to impingement of particles such as dust, weld slag, and grease.
The ANSI/ASME B31.3 specification sets an upper limit on the velocity of oxygen gas in
carbon steel and stainless piping (see graph).
Customers rarely set design velocities above 50% of this limit when using stainless
steel or carbon steel. When local flow conditions cause the velocity to exceed the
specification, then that portion of the system must be converted to a copper-based alloy
or a high nickel alloy such as Hastelloy C.
To measure the gas safely and accurately while minimizing pressure drop, customers have
used Hastelloy C vortex meters.
Why Vortex?
Vortex flowmeters provide several advantages in applications where velocity is strictly
limited. With vortex, the increase in velocity through the meter is minimal. In addition,
vortex flowmeters are preferable over other flow measurement techniques because of their
high accuracy and rangeability.
Why Rosemount Vortex?
Customers select the Model 8800C Vortex Flowmeter because of its proven performance in
oxygen gas applications, its Hastelloy C material and no-clog welded construction.
For more information, link to the 8800C product
page or Call Customer Central at 1-800-999-9307 or 612-906-8888 to discuss how the
Rosemount Model 8800C can be used in your applications.
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Emerson Process Management,
Rosemount Division, 8200 Market Blvd.
Chanhassen, MN USA 55317
North America: 1-800-999-9307 International:
952-906-8888 Fax: 952-949-7001
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