英语翻译
This will prevent school facilities personnel from having to guess whether the filter is ready for replacement.A gauge with a range of zero to 1.0 in.w.g.can save money and the environment by preventing premature disposal of filters that still have useful life,and can prevent health and maintenance problems caused by overloaded filters that have blown out.The gauge should be easily visible from a standing position in an easily accessed location near the air handling unit.