{"id":1373,"date":"2025-05-28T16:09:09","date_gmt":"2025-05-28T08:09:09","guid":{"rendered":"http:\/\/sinewo.gg12.globaldeepsea.site\/hazardous-area-temperature-t-level-knowledge\/"},"modified":"2025-05-28T16:09:09","modified_gmt":"2025-05-28T08:09:09","slug":"hazardous-area-temperature-t-level-knowledge","status":"publish","type":"post","link":"https:\/\/www.sinewo.com\/fr\/hazardous-area-temperature-t-level-knowledge\/","title":{"rendered":"Temp\u00e9rature dangereuse Temp\u00e9rature T Connaissances de niveau"},"content":{"rendered":"

Temperature T Class Ratings<\/span> <\/span><\/span><\/span>in Hazardous Area<\/span><\/span><\/p>\n

 <\/span><\/p>\n

1. <\/span><\/span>What is the function of T class ratings for <\/span><\/span>explosion-proof <\/span><\/span>products in hazardous area?<\/span><\/span><\/p>\n

 <\/span><\/p>\n

Temperature Classifications are given to hazardous area Temperature Class Ratings (also known as T-ratings or T-Class) and are applied to hazardous area zones and electrical equipment \u2013 T Class Ratings are <\/span>utilized<\/span><\/span> for all hazardous areas and explosion protection methods.<\/span><\/p>\n

 <\/span><\/p>\n

This helps the user to quantify the level of thermal energy allowed in the hazardous area area or explosive atmosphere according to the ATEX Directive or produced by the hazardous area equipment.<\/span><\/p>\n

 <\/span><\/p>\n

2. <\/span><\/span>Why is it important to definite the T class rating in hazardous area?<\/span><\/span><\/p>\n

 <\/span><\/p>\n

A<\/span><\/span>ccording to the ATEX Directive<\/span>, <\/span><\/span>A hazardous area can be defined as any location where there is risk of an explosion due to the presence of flammable gas and <\/span>steam<\/span><\/span>.<\/span> <\/span>However it is important to remember that every hazardous area is different and each has specific requirements depending on the nature of the atmosphere and the elements that are present.<\/span><\/p>\n

 <\/span><\/p>\n

Flammable materials have a temperature at which ignition will take place, even in the absence of an external source. The ignition temperature is the lowest temperature on the surface at which an explosive atmosphere will ignite.<\/span> <\/span>Apparatus must be selected so that it will not expose a gas-air mixture to a temperature exceeding its ignition temperature.<\/span> <\/span>This is achieved by Temperature Classification, the T-Class.<\/span><\/p>\n

 <\/span><\/p>\n

Gases and dusts have been divided into temperature classes according to their ignition temperatures so that electrical equipment can be further sub-divided into six temperature classes T1 to T6.<\/span><\/p>\n

 <\/span><\/p>\n

Note<\/span>: <\/span><\/span>The maximum operating surface temperature of a piece of electrical equipment must always be below the ignition temperature of the explosive mixture.<\/span><\/p>\n

 <\/span><\/p>\n

3. <\/span><\/span>What is the <\/span><\/span>Temperature Class<\/span> of explosion-proof m<\/span><\/span>aximum <\/span>s<\/span><\/span>urface <\/span>t<\/span><\/span>emperature<\/span>?<\/span><\/span><\/p>\n

 <\/span><\/p>\n

Temperature Classification is based on the maximum temperature which any relevant part of the equipment which may be in contact with a flammable <\/span>or <\/span><\/span>explosive<\/span> <\/span>gas<\/span> can reach.<\/span><\/span><\/p>\n

 <\/span><\/p>\n

This classification identifies the minimum ignition temperature threshold for the hazardous area. In other words, in order for the explosive or combustible environment to ignite, it need to be<\/span>ar <\/span><\/span>temperature <\/span>which <\/span><\/span>excess of this value.<\/span> <\/span>The values applied to this T-Class classification run from T1 to T6<\/span>:<\/span><\/span><\/p>\n

 <\/span><\/p>\n

T1 Class \u00a0\u00a0\u00a0\u00a0450\u00b0C <\/span><\/p>\n

T2 Class \u00a0\u00a0\u00a0\u00a0300\u00b0C <\/span><\/p>\n

T3 Class \u00a0\u00a0\u00a0\u00a0200\u00b0C <\/span><\/p>\n

T4 Class \u00a0\u00a0\u00a0\u00a0135\u00b0C <\/span><\/p>\n

T5 Class \u00a0\u00a0\u00a0\u00a0100\u00b0C <\/span><\/p>\n

T6 Class \u00a0\u00a0\u00a0\u00a0\u00a085\u00b0C <\/span><\/p>\n

 <\/span><\/p>\n

Relationship between T class and the maximum permissible temperature in \u00b0C of any surface in contact with flammable gas or ignitable<\/span> <\/span>dust<\/span> is b<\/span><\/span>ased on \u201320\u00b0C to +40\u00b0C ambient air temperature.<\/span><\/p>\n

 <\/span><\/p>\n

T1 <\/span>class <\/span><\/span>means the minimum ignition temperature is <\/span>more than <\/span><\/span>450\u00b0C <\/span>et<\/span><\/span> T6<\/span> class<\/span><\/span> means the minimum ignition temperature is <\/span>more than <\/span><\/span>85\u00b0C.<\/span><\/p>\n

 <\/span><\/p>\n

4. <\/span><\/span>What is the matched standard of T rating equipment?<\/span><\/span><\/p>\n

 <\/span><\/p>\n

Un<\/span><\/span> electrical equipment <\/span>in h<\/span><\/span>azardous area<\/span> could be<\/span><\/span> designed for use<\/span>d<\/span><\/span> in higher ambient temperatures. This would indicated on the rating plate e.g. <\/span>Exd ib IIC T6 G6\/Ext DA21 IP66 T80<\/span><\/span>\u00b0C<\/span><\/span>\u2013 it is from Ningbo Joiwo Explosionproof telephones rating late, which<\/span><\/span> means at <\/span>60<\/span><\/span>\u00b0C ambient<\/span><\/span> air temperature,<\/span><\/span> T<\/span>6<\/span><\/span> will not be exceeded<\/span>, with the highest T class division. <\/span><\/span><\/p>\n

 <\/span><\/p>\n\n\n\n\n\n\n\n\n\n
\n

Gas Area Classified T Rating<\/span><\/span><\/p>\n<\/td>\n

\n

Suitable Equipment<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T1<\/span><\/span><\/p>\n<\/td>\n

\n

T1, T2, T3, T4, T5, T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T2<\/span><\/span><\/p>\n<\/td>\n

\n

T2, T3, T4, T5, T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T3<\/span><\/span><\/p>\n<\/td>\n

\n

T3, T4, T5, T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T4<\/span><\/span><\/p>\n<\/td>\n

\n

T4, T5, T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T5<\/span><\/span><\/p>\n<\/td>\n

\n

T5, T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n

\n

T6<\/span><\/span><\/p>\n<\/td>\n

\n

T6<\/span><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/span><\/p>\n

 <\/span><\/p>\n

T1 <\/span>class <\/span><\/span>means the maximum surface temperature generated by the instrument at 40\u00b0 C is 450\u00b0 C. <\/span>T6 class <\/span><\/span>means the maximum surface temperature generated by the equipment is 85\u00b0 C.<\/span><\/p>\n

 <\/span><\/p>\n

Assuming the associated T Class and Temperature rating for the equipment are appropriate for the area, you <\/span>could<\/span><\/span> always use an instrument with a more stringent Division rating than required for the area.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Temp\u00e9rature T Notes de classe dans la zone dangereuse 1. Quelle est la fonction des cotes de classe t pour les produits anti-explosion dans la zone dangereuse? Des classifications de temp\u00e9rature sont donn\u00e9es aux notes de classe de temp\u00e9rature de la zone dangereuse (\u00e9galement connues sous le nom de ratings en T ou de classe T) et sont appliqu\u00e9es aux zones de zone dangereuses et aux \u00e9quipements \u00e9lectriques - les cotes de classe T sont utilis\u00e9es pour [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1373","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/posts\/1373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/comments?post=1373"}],"version-history":[{"count":0,"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/posts\/1373\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/media?parent=1373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/categories?post=1373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sinewo.com\/fr\/wp-json\/wp\/v2\/tags?post=1373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}