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AMCA Revises Fan Standard 204

Revisions include a new suggested frequency range for overall vibration measurement.
April 3, 2020

ARLINGTON HEIGHTS, Ill., April 3, 2020—Air Movement and Control Association (AMCA) International Inc. announces the revision of ANSI/AMCA Standard 204, Balance Quality and Vibration Levels for Fans.

Covering fans with rigid rotors generally found in commercial-building heating, ventilating, and air conditioning; industrial-process applications; mine/tunnel ventilation; and power-generation applications, ANSI/AMCA Standard 204 underwent minor revisions, including:

• Reformatting to adhere to current style.

• Changes to definitions for alignment with other standards.

• A new suggested frequency range for overall vibration measurement.

• Updates to the latest version of referenced standards.

• Inclusion of an example showing a typical calculation of overall vibration level from a vibration signature captured using a fast-Fourier-transform (FFT) analyzer.

The cost of ANSI/AMCA Standard 204-20 is $45 for AMCA members and $90 for non-members. To purchase, visit AMCA’s online store at www.amca.org/store.

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