Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Functional characteristics of air terminal devices
3.2 Symbols
4 Instrumentation
4.1 Airflow rate measurement
4.2 Pressure measurement
4.3 Temperature measurements
4.4 Velocity measurements
5 Testing of pressure and air velocity (first test installation)
5.1 Measurement of pressure requirement for a supply air
terminal device
5.1.1 General
5.1.2 Measurement of static gauge pressure Ps with the
first test installation A
5.1.3 Direct measurement of total pressure Pt with
the first installation A
5.1.4 Measurement of static pressure Ps with the first
installation B
5.1.5 Presentation of total pressure Pt
5.2 Measurement of pressure requirement for an exhaust air
5.3 Determination of air velocity and the corresponding
area Ak for the air terminal device (not mandatory)
5.3.1 Principle
5.3.2 Test installation
5.3.3 Test procedure
5.3.4 Correction of flow rates to standard air conditions
5.3.5 Calculation of Ak
6 Test to measure the isothermal air discharge characteristics
of a supply air terminal device (second test installation)
6.1 Test measurements
6.2 Test room
6.3 Test room equipment and instrumentation
6.4 Installation of the air thermal device
6.4.1 Classification of air terminal devices
6.4.2 Mounting of air terminal devices
6.4.3 Test duct and flow rate
6.5 Test procedure
6.6 Determination of isothermal performance
6.6.1 Test measurements
6.6.2 Determination of the main air stream direction
6.6.3 Measurement of air stream velocities
6.6.4 Determination of throw
6.6.5 Determination of spread
6.6.6 Determination of rise and drop
Annex A (normative) Alternative exploratory technique for
determination of throw, spread and drop
A.1 Scope
A.2 Determination of the point of maximum velocity
A.3 Determination of points at envelope velocity
A.4 Determination of spread
A.5 Determination of the rise and drop
A.6 Number of determinations