DIN 24163-2:1985-01

1 Scope and field of application
2 Terminology
3 Nomenclature, symbols, units
4 Set-up of standardized test airways
      4.1 General
      4.2 Types of test airway
5 Design and dimensions of test airway components
      5.1 Volume flow rate measuring device
      5.2 Transitions and intermediate ducts
      5.3 Auxiliary ventilator
      5.4 Control device
      5.5 Test chamber
      5.6 Test duct
      5.7 Fans with outlet side equalizing section
      5.8 Unobstructed discharge zone
6 Measuring methods and measuring instruments
      6.1 Measurement of variable quantities
      6.2 Pressure measurement
      6.3 Rotational speed measurement
      6.4 Measurement of fan shaft power
7 Verification of instruments
      7.1 Checking of volume flow rate measuring devices
             similar to standard devices
      7.2 Adjustment of control device
      7.3 Checking of velocity distribution at the pressure
             measuring point
      7.4 Pressure loss measurement
8 Evaluation, presentation and test results
      8.1 Evaluation of test results
      8.2 Uncertainty of measurement
      8.3 Conversion of test results in accordance with
             catalogue data
      8.4 Example of application

Applies to fans as defined in clause 2, in conjunction with DIN 24163 Part 1.