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Division 3.4.3 Calibration of a critical flow venturi (CFV)

Original text. Later amendments are not shown.

Figure A5/7

CFV calibration configuration

  1. 3.4.3.1Calibration of a CFV is based upon the flow equation for a critical venturi:
  2. 3.4.3.2Measurements for flow calibration of a critical flow venturi are required and the following data shall be within the limits of accuracy given:
  3. 3.4.3.3Division 3.4.3.3
  4. 3.4.3.3.1Division 3.4.3.3.1
  5. 3.4.3.3.2Division 3.4.3.3.2
  6. 3.4.3.3.3Division 3.4.3.3.3
  7. 3.4.3.3.3.1The air flow rate, Qs at each test point shall be calculated from the flow meter data using the manufacturer's prescribed method.
  8. 3.4.3.3.3.2Division 3.4.3.3.3.2
  9. 3.4.3.3.3.3Division 3.4.3.3.3.3
  10. 3.4.3.3.3.4Division 3.4.3.3.3.4