Can dust explosion protection requirements of different types be used together?
Thread Content
This is the explosion-proof requirement put forward by the customer; a touchscreen is needed. Below is the explosion-proof rating for the touchscreen. Can a ⅢB-rated touchscreen be used in a ⅢC environment? If it cannot be used, I will replace it with a Siemens Ex tc ⅢC T70℃ DC touch screen, as shown in the figure below. However, the protection rating of this Siemens touch screen is lower than what the customer requires. Can this Siemens touch screen be used?
They cannot be used together. The explosion protection rating requirements vary depending on the dust environment; it is essential to use products with the appropriate explosion protection rating in strict accordance with the conditions of the actual site. If the explosion protection rating of the product is lower than what the customer requires, it cannot be used; a product with an explosion protection rating that meets the site’s requirements must be selected. Even Siemens’ products must meet the explosion-proof rating requirements of the actual environment; otherwise, they cannot be used. .