What is BS EN 14277 – Method for airflow measurement for air terminal devices about? 
Terminal airflow devices are a type of air handling system that is generally used in conjunction with air volume flow systems, for efficient airflow in the occupied space.
BS EN 14277 is a European Standard that discusses air terminal devices for building ventilation.
The main objective of BS EN 14277 is to provide the best industry methods to have airflow measurement to ensure air terminal devices play a positive role in the operational efficiency and performance of ventilation systems.
BS EN 14277 specifies methods for the laboratory aerodynamic testing and rating of the airflow rate measurement accuracy of fixed airflow rate measurement devices, including supply and exhaust air terminal devices (ATD) and in-duct measurement stations (IMS) and the sensitivity of such devices to flow disturbance. A general overview of different test configurations is shown in Figure 1 of BS EN 14277.
Who is BS EN 14277 - Method for airflow measurement for air terminal devices for?  
BS EN 14277 on method for airflow measurement by calibrated sensors is relevant to:  
- Manufacturers of ventilation and air conditioning systems 
- Manufacturers of air terminal devices
- Quality control and testing personnel 
- Mechanical engineers 
- Product designers 
- Testing laboratories
- Building designers and architects 
Why should you use BS EN 14277 - Method for airflow measurement for air terminal devices?  
It is vital that the airflow measurement of air terminal devices be assessed in order to maintain the steady and efficient airflow through ducts by reducing the effect of flow disturbances.
In this regard, BS EN 14277 provides best industry guidance on methods to measure airflow rate, using calibrated sensors. Moreover, instrumentation for measuring pressure and temperature imbalances across the ducts of a supply air terminal device is also covered by BS EN 14277.
Alternative exploratory technique for determination of calibration curve has also been discussed in BS EN 14277.
As a result, if you are a manufacturer of air terminal devices used for building ventilation, by adopting BS EN 14277 test methods you can determine whether your products are reliable and effective for use. With the appropriate measurement of airflow, you can ensure that the air terminal devices play a positive role in the performance of ventilation systems.
