What is gas Group IIC?
Table of Contents
– Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard.
Which is better T1 or T6?
A T Class rating of T1 means the maximum surface temperature generated by the instrument at 40° C is 450° C. A rating of T6 means the maximum surface temperature generated by the equipment is 85° C.
What is T3C rating?
Hazardous Locations
| T-Codes and Associated Temperature | ||
|---|---|---|
| Identification Numbers | Maximum Temperature | |
| T3C | 160 | 320 |
| T4 | 135 | 275 |
| T4A | 120 | 248 |
What is ATEX classification?
In a hazardous dust environment, an ATEX Zone 21 is classified as an area that is classified ‘as a place in which an explosive atmosphere in the form of a cloud of combustible dust in the air is likely to occur occasionally during normal operation’ whereas an ATEX Zone 22 is classified as ‘a place in which an explosive …
What is ATEX EXNA?
Ex n is similar to Ex m and means non-sparking which limits it to Zone 2, Category 3 environments. Ex ia or intrinsically safe is suitable for Zone 0 or 20, Category 1. This achieved through limiting the energy of sparks and surface temperatures through very low power requirements.
What is temperature class in Atex?
Temperature class (also known as ‘T-rating’) defines the explosion hazard type for the Ex product. The class, from 1 to 6, indicates the highest temperature allowed without igniting anything in the area.
What are ATEX zones 1 and 2?
Hazardous Gas, Vapour and Mist Environments: ATEX Zones 1 and 2. A good example of an ATEX Zone 1 or ATEX Zone 2 classified operation would be a chemical or petrochemical plant, where there is a heightened risk for explosion during the course of normal day to day operations.
What is an EC (ATEX) Class 2 gas system?
This classification is for an EC (ATEX) compliant system for surface equipment that has an equipment category of 2 (Zone 1) and is for gasses as opposed to dusts. The protection concept is “d” which is flameproof, the gas group is IIC and the maximum allowable temperature is 200°C.
What type of explosion-proof equipment is required for ATEX Zone 1?
For use in ATEX zone 1, category 2 explosion-proof equipment is required. Does this make sense? You probably don’t think so, but we promise you that there is an obvious explanation.
What are the ATEX categories used for?
Definition Of ATEX Categories. ATEX categories are categories which are used to define equipment to be used in the various zones as detailed on the previous page. From this we can see that if an oven is to be used in a zone 1 application then equipment suitable for use in category 2 will need to be used.