What is BS EN 13181 – Performance testing of louvres subject to simulated sand about? 
Indoor air is kept fresh and healthy with proper ventilation. A louvre is a ventilation product that allows air to pass through it whilst keeping out unwanted elements such as water, dirt and debris.
BS EN 13181 is a European Standard that discusses terminals for building ventilation.
BS EN 13181 specifies a method for measuring the sand rejection efficiency of sand trap louvres subject to simulated sand and with inlet air flow through the louvre under test. BS EN 13181 considers a 1000 mm _ 1000 mm section of sand trap louvre, or the nearest possible blade increment, for evaluation purposes.
Who is BS EN 13181 - Performance testing of louvres subject to simulated sand for?  
BS EN 13181 on Performance testing of louvres subject to simulated sand  is relevant to: 
- Manufacturers of ventilation products 
- Manufacturers of louvres and terminals
- Quality control and testing personnel 
- Mechanical engineers 
- Product designers 
Why should you use BS EN 13181 - Performance testing of louvres subject to simulated sand?  
The tests incorporated in BS EN 13181 are:
- Sand Rejection Effectiveness - To establish the sand rejection effectiveness when subjected to various air flow rates through the assembly
- Entry loss coefficient/Pressure requirements - To establish the air pressure loss through the sand trap louvre at various air flow rates and by calculation Discharge Loss Coefficient.
BS EN 13181 provides best industry guidance on conducting these sets and covers test results and calculation examples for clarity. Guidance on measurement of air flow rate, pressure and temperature is also provided.
Thus, BS EN 13181 helps you in verifying the reliability of louvres subject to simulated sand to ensure they play a positive role in the functioning of terminals and maintain the overall efficiency of ventilation systems. Compliance with the tests can ensure your products are safe, reliable and effective at the point of use.
