{"id":7577,"date":"2025-05-15T16:41:09","date_gmt":"2025-05-15T14:41:09","guid":{"rendered":"https:\/\/malux.com\/kunskapsbankinlagg\/what-does-pressurised-ex-p-en-60079-2-mean\/"},"modified":"2026-02-20T14:07:43","modified_gmt":"2026-02-20T13:07:43","slug":"what-does-pressurised-ex-p-en-60079-2-mean","status":"publish","type":"kunskapsbankinlagg","link":"https:\/\/www.malux.com\/en\/kunskapsbankinlagg\/what-does-pressurised-ex-p-en-60079-2-mean\/","title":{"rendered":"What does pressurised (Ex p), EN 60079-2 mean?"},"content":{"rendered":"\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-1386f84 stk-block-background\" data-block-id=\"1386f84\"><style>.stk-1386f84 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-1386f84:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-1386f84 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-1386f84-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-9b9e9d3\" data-v=\"4\" data-block-id=\"9b9e9d3\"><style>.stk-9b9e9d3 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-9b9e9d3 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-9b9e9d3-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-9b9e9d3-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-065f69d\" data-block-id=\"065f69d\"><style>.stk-065f69d {margin-bottom:30px !important;}.stk-065f69d-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-065f69d {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-065f69d-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-80bf198\" data-v=\"4\" data-block-id=\"80bf198\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-80bf198-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-80bf198-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-2a1bcf7\" data-block-id=\"2a1bcf7\"><style>@media screen and (max-width: 1023px){.stk-2a1bcf7 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">The use of pressurised enclosures enables operation of equipment that is not explosion-protected for explosive atmospheres (EN 60079-2). Explosion protection of the \u201cpressurisation\u201d type is based on the principle of maintaining a constant overpressure with air or inert gas to prevent an explosive air\/gas mixture from forming near devices inside the pressurised enclosure. <br\/><br\/>The enclosure has a small but constant overpressure of air or inert gas and prevents the ingress of flammable gases or dust. In Zone 1\/2, the pressurised enclosure must be purged with air or inert gas to remove any explosive substances that may be present inside the enclosure before the protected equipment is energised. This procedure is referred to as the purging process. This process is not applicable in Zone 21 and 22 (dust).   <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-79ed1bb\" data-v=\"4\" data-block-id=\"79ed1bb\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-79ed1bb-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-79ed1bb-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-fa5f5ef\" data-block-id=\"fa5f5ef\"><style>.stk-fa5f5ef .stk-img-wrapper{width:100% !important;height:395px !important;}.stk-fa5f5ef .stk-img-wrapper img{object-fit:contain !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2356\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/ex-p-skyddsprincip-3_595d5d7b.png\" width=\"1000\" height=\"642\" alt=\"fakra-cables-most-common-codes-1_d59fc7bc\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/ex-p-skyddsprincip-3_595d5d7b.png 1000w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/ex-p-skyddsprincip-3_595d5d7b-300x193.png 300w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/ex-p-skyddsprincip-3_595d5d7b-768x493.png 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-4e5ddd1 stk-block-background\" data-block-id=\"4e5ddd1\"><style>.stk-4e5ddd1 {background-color:#ffdc2e !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-4e5ddd1:before{background-color:#ffdc2e !important;}@media screen and (max-width: 767px){.stk-4e5ddd1 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-4e5ddd1-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-73a6c0a\" data-v=\"4\" data-block-id=\"73a6c0a\"><style>.stk-73a6c0a {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-73a6c0a {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-73a6c0a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-73a6c0a-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-52624a2\" id=\"strong-tva-metoder-finns-tillgangliga-for-spolning-en-traditionell-och-en-ny-integrerad-metod-strong\" data-block-id=\"52624a2\"><h3 class=\"stk-block-heading__text\"><strong>Two methods are available for purging: a traditional method and a new integrated method:<\/strong><\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-b1a6399\" data-block-id=\"b1a6399\"><style>.stk-b1a6399 {margin-bottom:30px !important;}.stk-b1a6399-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-b1a6399 {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-b1a6399-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-0250071\" data-v=\"4\" data-block-id=\"0250071\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-0250071-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-0250071-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-56ea20d\" data-block-id=\"56ea20d\"><style>@media screen and (max-width: 1023px){.stk-56ea20d {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong><br\/>1. Time-based purging method<\/strong><br\/>When using the traditional method, the purge volume is a preset function with minimum flow and time. The flow rate depends on (air pressure) and the size of the internal nozzle (diameter 1 &#8230; 6 mm) of the valve and can be specified using matching charts. The general rule for purging must be observed: the minimum flow is less than the supplied air minus leakage loss. This method is referred to as the time-based purging method.   <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-503fe40\" data-v=\"4\" data-block-id=\"503fe40\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-503fe40-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-503fe40-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-556990f\" data-block-id=\"556990f\"><style>@media screen and (max-width: 1023px){.stk-556990f {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong>2. Integrated purging method<\/strong><br\/>Unlike the time-based method, the integrated purging method measures the actual volumetric flow through the enclosure outlet and supplies air or inert gas to achieve the correct purge volume. The flow is monitored and depends on the size of the nozzle opening. <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-15f4975 stk-block-background\" data-block-id=\"15f4975\"><style>.stk-15f4975 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-15f4975:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-15f4975 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-15f4975-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ce1d7c2\" data-v=\"4\" data-block-id=\"ce1d7c2\"><style>.stk-ce1d7c2 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-ce1d7c2 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ce1d7c2-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ce1d7c2-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-e27b08c\" data-block-id=\"e27b08c\"><style>.stk-e27b08c {margin-bottom:30px !important;}.stk-e27b08c-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-e27b08c {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-e27b08c-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6dde180\" data-v=\"4\" data-block-id=\"6dde180\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6dde180-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6dde180-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-73b1b1f\" data-block-id=\"73b1b1f\"><style>@media screen and (max-width: 1023px){.stk-73b1b1f {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">Integrating the actual media flow at the outlet minimises purge consumption regardless of the supply pressure. Exceeding predefined setpoints for flow rate and the associated higher purge air or inert gas is no longer up to date. <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-503c5b4\" data-v=\"4\" data-block-id=\"503c5b4\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-503c5b4-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-503c5b4-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-834f014\" data-block-id=\"834f014\"><style>.stk-834f014 .stk-img-wrapper{width:100% !important;height:395px !important;}.stk-834f014 .stk-img-wrapper img{object-fit:contain !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2357\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/kapsling_461d2f70.png\" width=\"335\" height=\"225\" alt=\"fakra-cables-most-common-codes-1_d59fc7bc\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/kapsling_461d2f70.png 335w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/kapsling_461d2f70-300x201.png 300w\" sizes=\"auto, (max-width: 335px) 100vw, 335px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-06683ff stk-block-background\" data-block-id=\"06683ff\"><style>.stk-06683ff {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-06683ff:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-06683ff {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-06683ff-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-636ba18\" data-v=\"4\" data-block-id=\"636ba18\"><style>.stk-636ba18 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-636ba18 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-636ba18-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-636ba18-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-41f1acd\" data-block-id=\"41f1acd\"><style>.stk-41f1acd {margin-bottom:30px !important;}.stk-41f1acd-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-41f1acd {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-41f1acd-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-3649b8f\" data-v=\"4\" data-block-id=\"3649b8f\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-3649b8f-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-3649b8f-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-485a11c\" data-block-id=\"485a11c\"><style>@media screen and (max-width: 1023px){.stk-485a11c {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong>Leakage compensation<\/strong><br\/>After purging, the controller maintains the pressure inside the enclosure at at least 0.8 mbar. The enclosure\u2019s minimum and maximum pressure are programmable and will be monitored. The inlet for compressed air or inert gas is controlled by two different valve technologies: digital solenoid valve (DSV) or proportional solenoid valve (PSV) technology.  <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-e845a62\" data-v=\"4\" data-block-id=\"e845a62\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-e845a62-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-e845a62-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d238bad\" data-block-id=\"d238bad\"><style>@media screen and (max-width: 1023px){.stk-d238bad {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong>Digital solenoid valve technology<\/strong><br\/>During purging, the DSV opens. After purging, it closes completely. A bypass choke compensates for leakage in the enclosure. This choke is integrated into the valve and is mechanically adjustable (diameter 0.3 &#8230; 1 mm).   <br\/><br\/>Digital solenoid valve technology has a significant disadvantage: during the purging process and normal operation, a constant air flow rate is required. For safety reasons, the flow rate must be greater than the leakage rate from the enclosure. A great deal of air is consumed with this technology.  <br\/><\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-56ff93d stk-block-background\" data-block-id=\"56ff93d\"><style>.stk-56ff93d {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-56ff93d:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-56ff93d {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-56ff93d-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6a0fe7d\" data-v=\"4\" data-block-id=\"6a0fe7d\"><style>.stk-6a0fe7d {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-6a0fe7d {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6a0fe7d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6a0fe7d-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-ac27b85\" data-block-id=\"ac27b85\"><style>.stk-ac27b85 {margin-bottom:30px !important;}.stk-ac27b85-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-ac27b85 {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-ac27b85-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-eeb359b\" data-v=\"4\" data-block-id=\"eeb359b\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-eeb359b-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-eeb359b-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-4b68249\" data-block-id=\"4b68249\"><style>@media screen and (max-width: 1023px){.stk-4b68249 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong>Proportional solenoid valve technology<\/strong><br\/>Using a proportional solenoid valve avoids unnecessary waste of compressed air or inert gas. Integrated proportional sensors and a proportional valve (PSV) create a single-sided pressure control system. The proportional valve is the actuator for a PID controller and compensates for exact air losses in enclosures. Therefore, the outlet valve on the Ex p control unit should remain permanently closed.   <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-ad9d01b stk-block-background\" data-block-id=\"ad9d01b\"><style>.stk-ad9d01b {background-color:#ffdc2e !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-ad9d01b:before{background-color:#ffdc2e !important;}@media screen and (max-width: 767px){.stk-ad9d01b {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-ad9d01b-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-271b094\" data-v=\"4\" data-block-id=\"271b094\"><style>.stk-271b094 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-271b094 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-271b094-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-271b094-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-f10926f\" id=\"fordelar-med-pressure-feed-back-ar\" data-block-id=\"f10926f\"><h2 class=\"stk-block-heading__text\">The advantages of pressure feedback are:<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-dd46cd9\" data-block-id=\"dd46cd9\"><style>.stk-dd46cd9 {margin-bottom:30px !important;}.stk-dd46cd9-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-dd46cd9 {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-dd46cd9-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-20243c9\" data-v=\"4\" data-block-id=\"20243c9\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-20243c9-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-20243c9-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9acbb21\" data-block-id=\"9acbb21\"><style>@media screen and (max-width: 1023px){.stk-9acbb21 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">1. Significantly lower consumption of air\/inert gas \u2013 the higher costs of the proportional valve are recouped within a very short period.<br\/><br\/>2. Increased service reliability is achieved through constant pressure inside the enclosure \u2013 increasing leakage caused by, for example, the enclosure is balanced and unplanned shutdowns are prevented. <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-921587a\" data-v=\"4\" data-block-id=\"921587a\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-921587a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-921587a-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-fff4435\" data-block-id=\"fff4435\"><style>@media screen and (max-width: 1023px){.stk-fff4435 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">3. Almost no flow, i.e. low air consumption. Another advantage of a proportional solenoid valve is that pressure control is also used during purging. A predefined pressure setpoint controls the enclosure pressure very precisely during the purging phase. In this way, pressure-sensitive components in the enclosure are protected from unnecessary ageing. Diaphragm switches or the viewing window will not be overloaded.    <br\/><\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-2618d04 stk-block-background\" data-block-id=\"2618d04\"><style>.stk-2618d04 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-2618d04:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-2618d04 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-2618d04-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ae76d88\" data-v=\"4\" data-block-id=\"ae76d88\"><style>.stk-ae76d88 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-ae76d88 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ae76d88-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ae76d88-inner-blocks\">\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-637f4a4\" data-block-id=\"637f4a4\"><style>.stk-637f4a4 {margin-bottom:30px !important;}.stk-637f4a4-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-637f4a4 {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-637f4a4-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-08320be\" data-v=\"4\" data-block-id=\"08320be\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-08320be-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-08320be-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-7b0a991\" data-block-id=\"7b0a991\"><style>@media screen and (max-width: 1023px){.stk-7b0a991 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\"><strong>Special requirements for Zone 21\/22 (Dust)<\/strong><br\/>In Zone 21, the enclosure must not be purged as in Zone 1 (gas). The operator must disable the automated purging function in the parameter menu. Purging in the presence of combustible dust can create a dangerous explosive atmosphere inside the cabinet.<br\/>In Zone 21, the purging period is replaced by cleaning, i.e. the operator must carefully remove the combustible dust inside the enclosure before energising. Once the enclosure is clean and pressurised, dust is prevented from entering.    <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Briefly about pressurised equipment in potentially explosive atmospheres in accordance with ATEX\/IECEx.<\/p>\n","protected":false},"featured_media":7578,"template":"","meta":{"_acf_changed":false},"kunskapsbankskategori":[240],"class_list":["post-7577","kunskapsbankinlagg","type-kunskapsbankinlagg","status-publish","has-post-thumbnail","hentry","kunskapsbankskategori-ex-industry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What does pressurised (Ex p), EN 60079-2 mean? - Malux<\/title>\n<meta name=\"description\" content=\"Briefly about pressurised equipment in potentially explosive atmospheres in accordance with ATEX\/IECEx.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What does pressurised (Ex p), EN 60079-2 mean? 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