What are the requirements for the Ingress Protection (IP) rating and explosion-proof certification of gas detectors?

The IP rating indicates the instrument’s dust and water resistance; for example, IP66 means it is completely dust-tight and can withstand powerful water jets, making it suitable for high-dust and high-humidity environments. Explosion-proof certifications (such as ATEX or IECEx) are mandatory for use in explosive gas atmospheres, ensuring the instrument does not generate sparks or high temperatures that could trigger an explosion. For instance, petrochemical facilities require explosion-proof equipment rated Exd II CT6 Gb.