{"id":46357,"date":"2026-01-22T21:39:37","date_gmt":"2026-01-22T21:39:37","guid":{"rendered":"https:\/\/www.alicat.com\/?p=46357"},"modified":"2026-02-25T20:24:28","modified_gmt":"2026-02-25T20:24:28","slug":"was-ist-ein-eigensicheres-schutzkonzept","status":"publish","type":"support","link":"https:\/\/www.alicat.com\/de\/support\/what-is-intrinsically-safe-protection-concept\/","title":{"rendered":"Was bedeutet \u2018eigensicher\u2019?"},"content":{"rendered":"\n[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;2em||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_heading title=&#8221;What is \u2018intrinsically safe\u2019?&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; custom_css_free_form=&#8221;selector h1 {||  text-wrap: pretty;||}&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;][\/et_pb_heading][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;0px||0px||true|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<p>Intrinsically safe (IS) is a method of protecting equipment used in hazardous locations by limited electrical and thermal energy outputs to levels too low to ignite a flammable atmosphere. Devices certified as intrinsically safe must pass rigorous testing to verify they cannot produce sparks, arcs, or hot surfaces capable of igniting, even under specified fault conditions.<\/p>\n<p>IS is one of the most practical protection methods for hazardous gas environments because it allows instruments to be installed directly inside the hazardous zone, often times without explosion proof enclosures or purge systems, while still allowing modern capabilities like electronic measurement, closed-loop control, and digital communication.<\/p>[\/et_pb_text][et_pb_heading title=&#8221;When would you need intrinsically safe equipment?&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p>Intrinsically safe instruments are most commonly used in applications where flammable gases or vapors may be present. Common examples include:<\/p>\n<ul>\n<li>Natural gas distribution and metering stations<\/li>\n<li>Hydrogen production, storage, and fuel systems<\/li>\n<li>Oil and gas well pads and processing plants<\/li>\n<li>Chemical processing and solvent handling<\/li>\n<li>Biogas, methane capture, and landfill gas systems<\/li>\n<li>Fuel transfer and vapor recovery systems<\/li>\n<li>Semiconductor and industrial gas delivery systems<\/li>\n<\/ul>\n<p>In these environments, instrumentation must meet hazardous location requirements such as, ATEX, IECEx, and North American approvals.<\/p>[\/et_pb_text][et_pb_heading title=&#8221;What makes an instrument %22intrinsically safe%22?&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p>Intrinsically safe instruments are designed to keep energy levels below ignition thresholds through engineering methods such as:\u00a0<\/p>\n<ul>\n<li>Limiting internal stored energy (capacitance \/ inductance)<\/li>\n<li>Restricting voltage and current under normal and fault conditions<\/li>\n<li>Controlling surface temperature to meet a temperature class<\/li>\n<li>Certifying the complete design against recognized standards and testing protocols<\/li>\n<\/ul>\n<p>Many IS systems use an associated apparatus such as a Zener barrier or galvanic isolated, installed outside the hazardous location, to limit the power entering the hazardous area.<\/p>[\/et_pb_text][et_pb_heading title=&#8221;Hazardous-location classification&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p>Hazardous locations are classified according to the type of explosive hazard (gas\/vapor or dust) and the likelihood that an explosive atmosphere will be present. Alicat is not certified for hazardous dust locations.\u00a0<\/p>\n<p>The table below summarizes this hazard classification system.<\/p>[\/et_pb_text][et_pb_heading title=&#8221;Gas\/Vapor areas (flammable atmospheres)&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][dvmd_table_maker tbl_row_header_count=&#8221;0&#8243; tbl_responsive_break_by=&#8221;row&#8221; tbl_chead_cell_color=&#8221;#2A3B47&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; tbl_tcell_text_text_color=&#8221;#2A3B47&#8243; tbl_chead_text_font=&#8221;|600|||||||&#8221; tbl_chead_text_text_color=&#8221;#FFFFFF&#8221; custom_margin=&#8221;||1rem||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][dvmd_table_maker_item col_label=&#8221;How often is flammable gas\/vapor present? &#8221; col_content=&#8221;How often is flammable gas\/vapor present?\nContinuous (present for continuously or for long periods)\nOccasional (likely during normal operation)\nRare (unlikely and or brief if it occurs)&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;ATEX\/IECEx Zone&#8221; col_content=&#8221;ATEX\/IECEx Zone\nZone 0\nZone 1\nZone 2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;North America (Class\/Division)&#8221; col_content=&#8221;North America (Class\/Division)\nClass I, Div 1\nClass I, Div 1\nClass I, Div 2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;North America (Class\/Zone)&#8221; col_content=&#8221;North America (Class\/Zone)\nClass I, Zone 0\nClass I, Zone 1\nClass I, Zone 2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_heading title=&#8221;Dust Areas (combustible dust atmospheres)&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][dvmd_table_maker tbl_row_header_count=&#8221;0&#8243; tbl_responsive_break_by=&#8221;row&#8221; tbl_chead_cell_color=&#8221;#2A3B47&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; tbl_tcell_text_text_color=&#8221;#2A3B47&#8243; tbl_chead_text_font=&#8221;|600|||||||&#8221; tbl_chead_text_text_color=&#8221;#FFFFFF&#8221; custom_margin=&#8221;||1rem||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][dvmd_table_maker_item col_label=&#8221;How often is combustible dust present?&#8221; col_content=&#8221;How often is combustible dust present?\nContinuous (present for continuously or for long periods)\nOccasional (likely during normal operation)\nRare (unlikely and or brief if it occurs)&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;ATEX\/IECEx Zone&#8221; col_content=&#8221;ATEX\/IECEx Zone\nZone 20\nZone 21\nZone 22&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;North America (Class\/Division)&#8221; col_content=&#8221;North America (Class\/Division)\nClass II, Div 1\nClass II, Div 1\nClass II, Div 2&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p><strong>Important Note:\u00a0<\/strong>Alicat intrinsically safe approvals are currently for\u00a0<strong>gas\/vapor hazards only<\/strong>. Alicat products are\u00a0<strong>not certified<\/strong> for combustible dust hazardous areas (Zones 20\/21\/22 or Class II)\u00a0<\/p>\n<h5><em>These tables are simplified for educational purposes. Always consult applicable codes, local regulations, and the product marking\/ certification documents for final installation compliance<\/em><\/h5>\n<p><a href=\"https:\/\/www.alicat.com\/documentation\/hazardous-environments-faq\/\">See more information on CSA\/ATEX certification for Class 1 Zone 2 or Class I Division 2 hazardous environments.<\/a><\/p>\n<p>These devices are used in highly regulated hazardous environments where potentially explosives gases and dust can be or are constantly present.<\/p>\n<p>If electronic, intrinsically safe devices are supplied energy through an electric barrier, which is an additional device that limits power. The barriers have additional failsafe electronics and limiters that are equally.<\/p>[\/et_pb_text][et_pb_heading title=&#8221;Alicat\u2019s intrinsically safe certification markings (gas) &#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||1rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p>Alicat Scientific offers a dedicated product family of intrinsically safe flow and pressure instruments designed for hazardous gas environments, including Zone 0 \/ Class I applications<\/p>\n<p><a href=\"https:\/\/www.alicat.com\/products\/class-i-div-1\/\">Alicat&#8217;s IS-Series instruments<\/a> are certified through DEKRA and carry approvals aligned with ATEX (Europe), IECEx (international) and North American intrinsically safe requirements<\/p>[\/et_pb_text][dvmd_table_maker tbl_chead_cell_color=&#8221;#2A3B47&#8243; tbl_rhead_cell_color=&#8221;#2A3B47&#8243; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; tbl_tcell_text_text_color=&#8221;#2A3B47&#8243; tbl_chead_text_font=&#8221;|600|||||||&#8221; tbl_chead_text_text_color=&#8221;#FFFFFF&#8221; tbl_rhead_text_font=&#8221;|600|||||||&#8221; tbl_rhead_text_text_color=&#8221;#FFFFFF&#8221; custom_margin=&#8221;||2rem||false|false&#8221; custom_css_free_form=&#8221;selector img {||  margin-bottom: -1px;||}&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][dvmd_table_maker_item col_content=&#8221;\nMarking\nCertificate Number\nCertificate&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;ATEX&#8221; col_content=&#8221;ATEX\n<img alt=%22Symbol for ATEX certified electrical equipment for explosive atmospheres%22 height=%2218%22 src=%22https:\/\/www.alicat.com\/wp-content\/uploads\/2024\/03\/logo-ex.svg%22 width=%2218%22> II 1G Ex ia IIC T4 Ga<br\/>Tamb -20\u00b0C to +70\u00b0C\nDEKRA 22ATEX0075X.\n<a href=%22https:\/\/documents.alicat.com\/certifications\/382861600-22ATEX0075-Iss0.pdf%22 data-et-target-link=%22_blank%22>E.U.: DEKRA 22ATEX0075 X Certification<\/a>&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;IECEx&#8221; col_content=&#8221;IECEx\nEx ia IIC T4 Ga<br\/>Tamb -20\u00b0C to +70\u00b0C\nIECEx DEK 22.0078 X.\n<a href=%22https:\/\/documents.alicat.com\/certifications\/IECEx_DEK_22.0078_000.pdf%22 data-et-target-link=%22_blank%22>International: IECEx DEK 22.0078X Certification<\/a>&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][dvmd_table_maker_item col_label=&#8221;North American&#8221; col_content=&#8221;North American\nClass 1, Div 1, Groups A-D T4<br\/>Class 1, Zone 0, AEx ia T4 Ga<br\/>Tamb -20\u00b0C to +70\u00b0C\n23CAUS40-127215.\n<a href=%22https:\/\/documents.alicat.com\/certifications\/DOC-IS-CERTIFICATE-CDEKRAUS.pdf%22 data-et-target-link=%22_blank%22>North America: DEKRA 23CAUS40-127215 Certification<\/a>&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/dvmd_table_maker_item][\/dvmd_table_maker][et_pb_heading title=&#8221;Compatible device configurations&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p><strong>IS-Series devices include<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.alicat.com\/products\/pressure\/pressure-controller\/class-i-div-1-pressure-controllers\/\">IS-Pro\u2122 pressure controllers<\/a><\/li>\n<li><span> <\/span><a href=\"https:\/\/www.alicat.com\/products\/pressure\/pressure-meter\/class-i-div-1-pressure-gauges\/\">IS-Pro\u2122 pressure meters<\/a><\/li>\n<li><a href=\"https:\/\/www.alicat.com\/products\/gas-flow\/mass-flow-controller\/class-i-div-1-flow-controllers\/\">IS-Max\u2122 mass flow controllers<\/a><\/li>\n<li><a href=\"https:\/\/www.alicat.com\/products\/gas-flow\/mass-flow-meter\/class-i-div-1-flow-meters\/\">IS-Max\u2122 mass flow meters<\/a><\/li>\n<\/ul>[\/et_pb_text][et_pb_heading title=&#8221;Need help selecting the right intrinsically safe configuration?&#8221; _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h3&#8243; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;][\/et_pb_heading][et_pb_text _builder_version=&#8221;4.27.5&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;||2rem||false|false&#8221; global_colors_info=&#8221;{}&#8221; theme_builder_area=&#8221;post_content&#8221;]<p>Intrinsic safety requires correct selection of device approvals and markings, barrier\/isolator configuration (when required), and installation practices. If you\u2019re specifying a Zone 0 \/ hazardous gas application and want help selecting an IS-Series configuration, <a href=\"https:\/\/www.alicat.com\/contact\/\">talk to an engineer <\/a> for recommendations based on your installation and regional requirements.<a href=\"https:\/\/www.alicat.com\/contact\/\"><\/a><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"featured_media":46458,"parent":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"1400","content-type":"","_searchwp_excluded":""},"categories":[128,113,135,136],"class_list":["post-46357","support","type-support","status-publish","has-post-thumbnail","hentry","category-environmental-air-monitoring","category-intrinsically-safe","category-is-max","category-is-pro"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is \u2018intrinsically safe\u2019? - Alicat Scientific<\/title>\n<meta name=\"description\" content=\"Intrinsically safe is a protection concept that prevents ignition in hazardous locations, its purpose is to ensure safety of people and processes in the most demanding industries\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alicat.com\/de\/unterstutzung\/was-ist-ein-eigensicheres-schutzkonzept\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is \u2018intrinsically safe\u2019?\" \/>\n<meta property=\"og:description\" content=\"Intrinsically safe is a protection concept that prevents ignition in hazardous locations, its purpose is to ensure safety of people and processes in the most demanding industries\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.alicat.com\/de\/unterstutzung\/was-ist-ein-eigensicheres-schutzkonzept\/\" \/>\n<meta property=\"og:site_name\" content=\"Alicat Scientific\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/alicatscientific\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-25T20:24:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.alicat.com\/wp-content\/uploads\/2026\/01\/featured-alicat.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.alicat.com\\\/support\\\/what-is-intrinsically-safe-protection-concept\\\/\",\"url\":\"https:\\\/\\\/www.alicat.com\\\/support\\\/what-is-intrinsically-safe-protection-concept\\\/\",\"name\":\"What is \u2018intrinsically safe\u2019? 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