{"id":25598,"date":"2023-10-11T16:29:00","date_gmt":"2023-10-11T20:29:00","guid":{"rendered":"https:\/\/world.dan.org\/?post_type=dan_alert_diver&#038;p=25598"},"modified":"2023-10-19T11:43:12","modified_gmt":"2023-10-19T15:43:12","slug":"helium-gas-purity-what-is-pure-enough","status":"publish","type":"dan_alert_diver","link":"https:\/\/world.dan.org\/id\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/","title":{"rendered":"Kemurnian Gas Helium: Apa yang Cukup Murni?"},"content":{"rendered":"<p><strong>KETIGA GAS TERSEBUT SECARA UMUM<\/strong> yang digunakan dalam penyelaman rekreasi dan teknis adalah oksigen, nitrogen, dan helium. Nitrogen adalah yang paling melimpah dan biasanya merupakan gas standar, tetapi tampaknya tidak ada yang mengkhawatirkan kemurniannya, meskipun Asosiasi Gas Terkompresi (CGA) A.S. memberikan tingkat kemurnian, atau tingkatan, untuk berbagai aplikasi.&nbsp;<\/p>\n\n\n\n<p>Helium adalah yang paling mahal. Ia membentuk kurang dari 0,001 persen atmosfer planet kita, atau 50 bagian per juta (ppm), dan mencair pada suhu ekstrem -452 \u00b0 F (-269 \u00b0 C). Helium adalah gas paling melimpah kedua di alam semesta, dan matahari kita memproduksi ratusan ton helium setiap detiknya. Karena kita tidak dapat memanen helium matahari, kita mengandalkan peluruhan radioaktif untuk menghasilkan apa yang kita butuhkan. Untungnya, bentuk yang kita ekstrak sepenuhnya stabil.<\/p>\n\n\n\n<p>Ketika mempertimbangkan kemurnian helium yang harus dipertimbangkan penyelam ketika membuat campuran gas mereka, spesifikasi komoditas untuk helium (CGA G-9.1) dengan mudah menggunakan \"aplikasi penyelaman\/pernapasan.\" Spesifikasi ini mencakup kisaran yang kami sebut sebagai tingkatan, atau tingkat verifikasi kualitas, yang menentukan kemurnian yang diperlukan dan tingkat kontaminan yang diizinkan. Setiap batch helium dianalisis untuk menentukan apakah memenuhi tingkat minimum untuk grade tertentu.&nbsp;<\/p>\n\n\n\n<p>Balon kelas H adalah yang paling tidak murni yaitu 97,5 persen. Ini cukup murni untuk keperluan pernapasan, tetapi masalahnya adalah standar untuk kelas tersebut tidak menangkap semua kontaminan potensial. Balon ini dapat mengandung 0,025 persen (250 ppm) karbon monoksida (CO), dan Anda tidak akan mengetahuinya hingga Anda naik dari ketinggian 60 kaki dan mulai merasa tidak nyaman.<\/p>\n\n\n\n<p>Berikutnya adalah kelas medis J, yang memenuhi spesifikasi minimum 99,0 persen dan disertifikasi memiliki CO kurang dari 0,001 persen (10 ppm). Kelas ini juga aman untuk campuran gas pernapasan, tetapi hanya di permukaan. Seperti oksigen, ini dianggap sebagai obat dan memerlukan resep medis untuk membelinya.<\/p>\n\n\n\n<p>Kita bisa melewatkan kelas L, yang disebut sebagai gas las. Helium tingkat N memiliki tingkat kemurnian 99,997 persen, yang berarti potensi kontaminan hanya 30 ppm, dan ini adalah tingkat yang dianggap cocok untuk aplikasi penyelaman dan respirator.<\/p>\n\n\n\n<p>Penting untuk diingat bahwa semua gas ini, yang digunakan untuk segala hal, mulai dari balon hingga aplikasi menyelam, diproduksi sebagai helium murni. Satu-satunya perbedaan adalah apa yang dicari oleh analisis selama proses verifikasi.&nbsp;<\/p>\n\n\n\n<p>Kami tidak ingin ada kontaminan dalam jumlah berlebihan yang akan memengaruhi fisiologi manusia di kedalaman, jadi kami perlu membeli helium kelas selam. Bahkan helium tingkat medis memiliki sisa 1 persen, yaitu 10.000 ppm, yang dapat mengandung sesuatu yang tidak ingin kita hirup saat bertekanan.&nbsp;<\/p>\n\n\n\n<p>Menggunakan helium dengan tingkat pengotor total 30 ppm memastikan bahwa kita menghirup campuran gas yang aman. AD<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-dan-light-gray-color has-alpha-channel-opacity has-dan-light-gray-background-color has-background is-style-wide\"\/>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-small-font-size\">\u00a9&nbsp;<em>Alert Diver<\/em>&nbsp;- Q3 2023<\/p>","protected":false},"excerpt":{"rendered":"<p>TIGA GAS yang umumnya digunakan dalam penyelaman rekreasi dan teknis adalah oksigen, nitrogen, dan helium. Nitrogen adalah yang paling melimpah dan biasanya merupakan gas standar, tetapi tampaknya tidak ada yang peduli dengan kemurniannya, meskipun Asosiasi Gas Terkompresi (CGA) A.S. menyediakan tingkat kemurnian, atau tingkatan, untuk berbagai aplikasi.\u00a0<\/p>","protected":false},"featured_media":25599,"template":"","dan_alert_diver_categories":[468],"dan_alert_diver_issues":[487],"class_list":["post-25598","dan_alert_diver","type-dan_alert_diver","status-publish","has-post-thumbnail","hentry","dan_alert_diver_categories-risk-mitigation","dan_alert_diver_issues-q3-2023"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Helium Gas Purity: What Is Pure Enough? - DAN World<\/title>\n<meta name=\"description\" content=\"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. Nitrogen is the most abundant and is usually the default gas, but no one seems concerned about its purity, although the U.S. Compressed Gas Association (CGA) provides purity levels, or grades, for various applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/world.dan.org\/id\/alert-diver\/article\/helium-gas-purity-what-is-pure-enough\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Helium Gas Purity: What Is Pure Enough?\" \/>\n<meta property=\"og:description\" content=\"THE THREE GASES GENERALLY used in recreational and technical diving are oxygen, nitrogen, and helium. 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