防爆標志舉例 Explosive mark exemplify
1. 如電氣設備為ⅡB類隔爆型T3組，標志為ExdⅡBT3。
2. 如電氣設備為Ⅱ類增安型，溫度組別為T2組，標志為ExeⅡT2。
3. 如電氣設備采用一種以上的復合型式，則先標出主體防爆型式，后標出其它防爆型式，如主體采用增安型內裝ⅡC類隔爆部件，溫度組別為T4，標志為ExedⅡCT4。如果主要部件采用隔爆型ⅡB類，T4組，其余部件為增安型，則防爆標志為ExdeⅡBT4。
4. DIP A20 TA,T4，DIP表示粉塵防爆，A20表示可使用于20區的A型設備，TA,T4表示設備的溫度組別為T4(135℃)。
1. Class ⅡB,group T3 falmeproof explosive electric equipment, mark "ExdⅡBT3".
2. Class Ⅱ,group T2 increasing safety explosive electric equipment, mark "ExeⅡT2".
3. It adopts multiple type, First mark main explosive proof type. Then mark other explosive-proof type.The main body adopt increasing safety and built-in classⅡC isolative explosion parts,temperature T4,mark "EexdⅡCT4",if main part adopts isolative explosive ⅡB T4,other adopt increasing safety, then it marks " ExdeⅡBT4".
4. DIP A20 TA,T4, DIP means dustignition explosion-proof ,A20 means type A explosive-proof equipment and used for Zone 20,TA,T4 means temperature T4 (135℃)
氣體和蒸氣按其試驗安全間隙(MESG)和小點燃電流(MIC)分級
Ari and vapor class according to MESG and MIC
|
類 別 Item
| 試驗安全(MESG)(mm)
Max safety creeping clearance (MESG) | 小點燃電流比（MIC） Mix igniting current (MIC) |
| ⅡA | ≥0.9 | ＞0.8 |
| ⅡB | 0.5＜MESG≤0.9 | 0.45≤MICR≤0.8 |
| ⅡC | ≤0.5 | ＜0.45 |
場所中的氣體、蒸氣分級/允許使用設備級別
Classification of gas and vapor / permitted apparatus classitication
|
場場所中氣體、蒸氣分級 Classification of gas and vap
| 允許使用設備級別
Permitted apparatus classification |
| *
Class A | (例如：丙烷、戊烷、苯、汽油、乙醇、乙醛、丙酮、甲胺等)
(Example: propane, hexane, benzene, gasoline, ethanol, acetaldehyde, acetone, methylamine) | ⅡA、ⅡB或ⅡC |
| B級
Class B | (例如：乙稀、二甲醚、焦爐煤氣等)
(Example: ethylene, climethyl ether, coke over gas) | ⅡB、ⅡC |
| C級
Class C | (例如：氫氣、乙炔和二硫化碳)
(Example: hydrogen, acetylene, carbon disulphide) | ⅡC |
防腐電工產品標志 Mark of anti-corrosive electrical products
|
環境條件
Environment conditions
| 適用環境類別和標志 Applicable environment group and mark |
| 0類(輕腐蝕環境)
Group 0 ( light corrosive
environment ) | 1類(中等腐蝕環境)
Group 1 ( middlecorrosive
environment ) | 2類(強腐蝕環境)
Group 2 ( strong corrosive
environment ) |
| 戶內 Indoor | 
| F1 | F2 |
| 戶外 Outdoor | W | WF1 | WF2 |
引入裝置通徑對應表 Inlet set diameter list
|
通 徑 Dia
| 相對應的管螺紋(G")
Inlet size | 俗稱 Name | 允許電纜(mm)
Cable Max diameter |
| DN15 | 1/2 | 4 分 | Φ7～Φ10 |
| DN20 | 3/4 | 6 分 | Φ10～Φ14 |
| DN25 | 1 | 1吋 | Φ12～Φ18 |
| DN32 | 1 1/4 | 1.2吋 | Φ18～Φ30 |
| DN40 | 1 1/2 | 1.5吋 | Φ18～Φ30 |
| DN50 | 2 | 2吋 | Φ30～Φ46 |
| DN70 | 2 1/2 | 2．5吋 | Φ38～Φ56 |
| DN80 | 3 | 3吋 | Φ61～Φ80 |
| DN100 | 4 | 4吋 | Φ61～Φ80 |
