{"id":741,"date":"2024-07-09T13:19:56","date_gmt":"2024-07-09T10:19:56","guid":{"rendered":"https:\/\/gazolcum.com\/?p=741"},"modified":"2024-07-09T16:49:04","modified_gmt":"2024-07-09T13:49:04","slug":"patlayici-olcum-cihazlari-yanici-gaz-dedektorleri-lel-olcumu","status":"publish","type":"post","link":"https:\/\/gazolcum.com\/en\/patlayici-olcum-cihazlari-yanici-gaz-dedektorleri-lel-olcumu\/","title":{"rendered":"Explosive Measurement Devices, Flammable Gas Detectors, LEL Measurement"},"content":{"rendered":"
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Explosive gas\u00a0<\/strong>detectors<\/strong>\u00a0, natural gas, LPG (butane, propane), pentane, hydrogen, hydrocarbons, alcohols, solvents, ammonia, etc. They are flammable gas detectors for leak detection of explosive gases such as They detect flammable gases and measure their amounts in the atmosphere according to the Lower Explosive Limit (LEL).\u00a0Explosive<\/strong>\u00a0There are two sensor technologies for gas detection: catalytic sensors (most commonly used) and infrared sensors for harsh environmental conditions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Explosive gas detectors with catalytic cells<\/h2>\n
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Catalytic diffusion cells are the most commonly used for 4-gas detectors\u00a0and flammable vapor detection. Through the measuring principle, there is a relationship between the presence of flammable gases and temperature. This temperature increase was then converted into a measurable quantity: LEL (lower explosive limit). Although this measuring technology has an excellent price\/performance ratio, it has some disadvantages:<\/p>\n

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  • It can only operate with a minimum oxygen content of more than 10% (completely ineffective in an inert environment).<\/li>\n
  • It does not distinguish between explosive gases present (same principle as a scale: it gives the weight but does not tell who is on the scale).<\/li>\n
  • Premature wear if explosive gases are detected frequently or continuously (even with low LEL values).<\/li>\n
  • Those with high sensitivity to poisons such as silicon, lead or sulfur compounds.<\/li>\n<\/ul>\n<\/div>\n

    Combustible gas detectors with infrared cells<\/h2>\n
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    Infrared absorption cells are mainly used for the detection of some explosive gases (when the IR curve is available). It is a more expensive technology than catalytic diffusion technology, but it has many real technical advantages:<\/p>\n

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    • Very long life.<\/li>\n
    • They are not constantly exposed to flammable gas or cell saturation (measurement above 100% of LEL).<\/li>\n
    • Immunity to poisons such as silicates or H2S.<\/li>\n
    • Possibility to work in inert atmospheres (without oxygen).<\/li>\n
    • The measurement is virtually error-free because the detector systematically alarms if there is a malfunction<\/li>\n<\/ul>\n

      IR sensors, on the other hand, do not work with monochromatic cells such as hydrogen.<\/p>\n<\/div>\n

      ATEX Explosion Meter<\/h2>\n
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      ATEX approval (for\u00a0ATmosph\u00e8re EXplosive\u00a0) indicates the capability of the equipment to integrate the high explosive risk zone by not supporting explosion triggering (flame, spark, etc.). Approved for use in an explosive atmosphere\u00a0ATEX explocimeter<\/strong>\u00a0(or ATEX detector for explosives) guarantees maximum safety for all teams working in a hazardous area.<\/p>\n

      It is a portable version of personal protective equipment used in many activity sectors such as oil and gas industries, heavy chemicals, metallurgy, water treatment and sanitation. This PPE is also used to ensure safety when entering confined spaces (as part of the CATEC system) and in public works. It is also an integral part of firefighter equipment.<\/p>\n

      In parallel, it is implemented in a fixed version connected to a gas detection controller\u00a0or a safety automation\u00a0. The flammable gas transmitter allows to ensure the safety of all facilities exposed to such risks.<\/p>\n<\/div>\n

      LEL of the most common flammable gases<\/h2>\n
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      The lower explosion limit is expressed as a percentage of the total volume (%\/volume).<\/p>\n

      Acetone: 2.5% \u2013 Acetylene: 2.5% \u2013 Ammonia: 15.0% \u2013 Benzene: 1.2% \u2013 Butane: 1.9% \u2013 Ethanol: 3.3% \u2013 Hydrogen: 4.0% \u2013 Carbon monoxide: 12.5% \u200b\u200b\u2013 Methane CH4: 5.0% \u2013 Methanol: 6.0% \u2013 Pentane: 1.4% \u2013 Propane: 2.1% \u2013 Styrene: 0.9% \u2013 Toluene: 1.1% \u2013 Xylene: 1.1%.<\/p>\n

      For benzene, styrene, toluene and xylene, see also the\u00a0detection of volatile organic compounds\u00a0page .<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

      Patlay\u0131c\u0131 gaz\u00a0dedekt\u00f6rleri\u00a0, do\u011fal gaz, LPG (b\u00fctan, propan), pentan, hidrojen, hidrokarbonlar, alkoller, \u00e7\u00f6z\u00fcc\u00fcler, amonyak vb. gibi patlay\u0131c\u0131 gazlar\u0131n s\u0131z\u0131nt\u0131 tespiti i\u00e7in yan\u0131c\u0131 gaz dedekt\u00f6rleridir. Yan\u0131c\u0131 gazlar\u0131 tespit ederler ve Alt Patlama S\u0131n\u0131r\u0131’na (LEL) g\u00f6re atmosferdeki miktarlar\u0131n\u0131 \u00f6l\u00e7erler\u00a0.\u00a0Patlay\u0131c\u0131\u00a0gaz tespiti i\u00e7in iki sens\u00f6r teknolojisi vard\u0131r: katalitik sens\u00f6rler (en yayg\u0131n kullan\u0131lan) ve zorlu \u00e7evre ko\u015fullar\u0131 i\u00e7in k\u0131z\u0131l\u00f6tesi sens\u00f6rler. Katalitik […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33,34,32],"tags":[],"class_list":["post-741","post","type-post","status-publish","format-standard","hentry","category-uygulamalar","category-gaz-algilama-uygulamalari","category-gaz-bilgisi"],"_links":{"self":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/comments?post=741"}],"version-history":[{"count":3,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/741\/revisions"}],"predecessor-version":[{"id":1074,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/posts\/741\/revisions\/1074"}],"wp:attachment":[{"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/media?parent=741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/categories?post=741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gazolcum.com\/en\/wp-json\/wp\/v2\/tags?post=741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}