Hg in. Hg cfm cfm ft. Instruments and Methods of Measurement 5. Equipment other than the examples cited may be used provided the accuracy requirements are met or exceeded.

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Reproduction or translation of any part of this work beyond that permitted by Sections and of the United States Copyright Act without the permission of the copyright owner is unlawful. The major changes reflected in this revision are: -Added requirements for checking effectiveness of the airflow settling means Annex A -Added methods for testing chamber leakage Annex B -Introduced usage of a Star type straightener -Refined the conversion from in.

Steve Adamski Revcor, Inc. Charles W. Coward Jr. Waddell, Inc. Peter G. Paul R. Heitzmann Morrison Products, Inc. Allen Ray Barron Industries, Inc. However, AMCA International and ASHRAE do not guarantee, certify or assure the safety of performance of any products, components or systems tested, designed, installed or operated in accordance with this standard or that any tests conducted under this standard will be non-hazardous or free from risk.

Purpose and Scope. Normative References. Instruments and Methods of Measurement. Test Setups and Equipment. Observations and Conduct of Test. Report and Results of Test. General requirements. Piezometer ring check optional. Blow through verification test. Reverse flow verification test. Pressure decay method. Flow meter method. Tubing Informative. Derivations of Equations Informative. Similarity and Fan Laws Informative. Uncertainties Analysis [10] Informative.

Iterative Procedure Informative. Purpose and Scope This standard establishes uniform test methods for a laboratory test of a fan or other air moving device to determine its aerodynamic performance in terms of airflow rate, pressure developed, power consumption, air density, speed of rotation, and efficiency for rating or guarantee purposes. This standard applies to a fan or other air moving device when air is used as the test gas with the following exceptions: a air circulating fans ceiling fans, desk fans ; b positive pressure ventilators; c compressors with inter-stage cooling; d positive displacement machines; e test procedures to be used for design, production, or field testing.

Normative References The following standards contain provisions that, through specific reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.

AMCA 3. A device that uses a power-driven rotating impeller to move air or gas. This limit is approximately equivalent to a pressure of 30 kPa in.

The interfaces between a fan and the remainder of the air system; the respective planes perpendicular to an airstream entering or leaving a fan.

The interface between a fan and its driver. The gross inside area measured in the plane s of the outlet opening s. The gross inside area measured in the plane s of the inlet connection s.

For converging inlets without connection elements, the inlet area shall be considered to be that where a Related.



Shakataxe These test procedures assume isothermal conditions. Diameter ratio has been omitted in Section 7. The nozzle throat dimension L shall be either 0. A flow nozzle without an integral throat tap may be used in a multiple nozzle chamber, in which case, upstream and downstream pressure taps shall be located as shown in the figure xnsi the appropriate setup. Efficiency is based on a per-unit basis. Other factors may have an equal or greater effect on fan performance. The fan laws should not be amva if it is suspected that the airflow regimes are significantly different because of a difference in Reynolds number.


AMCA IBR Standards Available

Goltir A static pressure tap meeting the requirements shown in Figure 2A is considered a primary instrument and need not be calibrated provided it is maintained in a condition conforming to this standard. The airflow rate Q3 at the Pitot traverse plane shall be obtained from the velocity V3 and the area A3 using: Edge of hole shall be square and free from burrs. The unit of torque is the Newton-meter N? However, three or four screens with decreasing percent of open area in the direction of airflow are suggested.


AMCA 210: Laboratory Methods of Testing Fans for Ratings


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