The ignition source is surrounded by fine-grained sand. The Ex atmosphere surrounding the case can not be ignited by an arc. Is identified as “Ex q”.

The ignition source is surrounded by a protective gas under pressure (My. 0,5 mbar); the external atmosphere can not penetrate. Is identified as “Ex p”.

The material or its components are immersed in oil and well separated from the explosive atmosphere. Is identified as “Ex o”.

La fuente de ignición queda encerrada en una Masa por lo que no puede inflamarse la atmósfera explosiva. Is identified as “Ex m”.

Limiting the energy in the circuit prevents the occurrence of excessive temperatures, sparks and electric arcs. Is identified as “Ex ia” from “Ex ib” according to appropriate equipment Category 1 to Category 2.

Applicable only to the material or its components, that normally does not generate sparks or electric arcs, can not adopt dangerous temperatures and whose supply voltage does not exceed 1 kV. Is identified as “Ex e”.

Enclosure designed so that if an explosion occurs within it, it resists the pressure, i.e., the explosion is not spread abroad. Is identified as “Ex d”.

Entrada de una variable de Proceso que se representa como una línea recta.

The enthalpy is a thermodynamic variable symbolized with the letter H, the enthalpy expresses a measure of the energy absorbed or given by a thermodynamic system, or, which is the same, la cantidad de…

The enthalpy is a thermodynamic variable symbolized with the letter H, the enthalpy expresses a measure of the energy absorbed or given by a thermodynamic system, or, which is the same, la cantidad de…