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As LED lighting proliferates in automotive applications, so does condensation. That’s because LED lamps’ heat source is at the rear of the assembly, making the lens area the cold spot where condensation forms most easily. Often with unpleasant results: foggy, cloudy or streaky lenses, and lamps that don’t shine as brightly as when they left the showroom. Condensation could also compromise integrated sensors or other electronic devices.

벤트 선택 시 가장 중요한 일은 먼저 애플리케이션이나 기기 또는 함체에 필요한 보호 수준을 정의하는 것입니다.

IP 등급을 NEMA 등급으로 ‘변환’하는 것은 불가능합니다. IP와 달리 NEMA에서만 요구되는 추가적인 테스트가 있기 때문입니다. 하지만 주어진 IP 등급과 대등하거나 그 이상의 성능을 제공하는 최소한의 NEMA 등급이 있습니다.

A critical aspect of vent selection begins with defining the level of protection your application, device or housing requires.

IP ratings cannot be “converted” to NEMA ratings, since NEMA requires additional testing not included in IP. However, there are minimum NEMA ratings that will meet or exceed a given IP code.

ベントの選択で重要なのは、まず最初に用途、機器、または筐体が必要とする保護レベルを定義することです。

NEMAはIPに含まれていない追加の試験を必要とするため、IP等級をNEMA等級に「変換」することはできません。ただし、所定のIP基準を満たす、または上回る最小のNEMA等級があります。

选择防水防尘透气产品时，先确定应用、设备或外壳所需的防护等级非常关键。

由于NEMA需要进行IP中不包含的额外测试，因此IP防护等级无法“转换”为NEMA等级。但是，NEMA防护等级可满足或超出特定IP代码的要求。

This document explains the format and classification of Ingress Protection (IP) ratings, according to the IEC 60529 standards.

This document explains the Underwriters Laboratory standard for testing the flammability properties of plastic materials used for parts in devices and appliances.

Description of standard test used to measure a membrane's ability to stop aqueous flow, and diagram of the apparatus used for water entry pressure testing.

Description of standard test used to measure airflow of low flowing media, and diagram of the apparatus used for Gurley airflow testing.

The key to choosing the appropriate membrane technology for a given application is understanding the environmental conditions and the surface tension of the fluids that the vent will encounter.