{"id":7951,"date":"2021-03-10T16:07:45","date_gmt":"2021-03-10T15:07:45","guid":{"rendered":"https:\/\/www.atollplongee.com\/glossary\/manometre\/"},"modified":"2021-03-10T16:07:45","modified_gmt":"2021-03-10T15:07:45","slug":"manometre","status":"publish","type":"glossary","link":"https:\/\/www.atollplongee.com\/en\/glossary\/manometre\/","title":{"rendered":"Manom\u00e8tre<span class=\"dashicons\" data-icon=\"\" style=\"display:inline;vertical-align:baseline;\"><\/span>"},"content":{"rendered":"<p>&ldquo;Appareil permettant de conna&icirc;tre la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Pression&lt;span class=&amp;quot;dashicons &amp;quot; data-icon=&amp;quot;&amp;quot; style=&amp;quot;display:inline;vertical-align:baseline;&amp;quot;&gt;&lt;\/span&gt;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;quot;La pression est une grandeur physique qui se d&eacute;finit comme &eacute;tant l&amp;#039;intensit&eacute; de la force qu&amp;#039;exerce un gaz par unit&eacute; de surface. En plong&eacute;e sous-marine, elle permet d&amp;#039;&eacute;valuer la quantit&eacute; de gaz contenu dans un volume donn&eacute;. Elle se mesure en pascals dans le syst&egrave;me international (symbole Pa), mais se mesure plut&ocirc;t en bars en plong&eacute;e :  1bar=100000Pa=1kg\/cm2  En plong&eacute;e, on distingue plusieurs types de pression : &bull;\tLa pression absolue (ou pression ambiante, ou pression environnante),&bull;\tLa pression hydrostatique,&bull;\tla haute pression, la pression interm&eacute;diaire et la basse pression,&bull;\tLa mi-pression,&bull;\tLa notion de pression partielle&amp;quot;&lt;\/div&gt;\"  href=\"https:\/\/www.atollplongee.com\/en\/glossary\/pression\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>pression<\/a> d&rsquo;air disponible dans une bouteille de plong&eacute;e. Il existe des manom&egrave;tres de surface et des manom&egrave;tres immergeables.<br>\nLe manom&egrave;tre indique une <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Pression&lt;span class=&amp;quot;dashicons &amp;quot; data-icon=&amp;quot;&amp;quot; style=&amp;quot;display:inline;vertical-align:baseline;&amp;quot;&gt;&lt;\/span&gt;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;quot;La pression est une grandeur physique qui se d&eacute;finit comme &eacute;tant l&amp;#039;intensit&eacute; de la force qu&amp;#039;exerce un gaz par unit&eacute; de surface. En plong&eacute;e sous-marine, elle permet d&amp;#039;&eacute;valuer la quantit&eacute; de gaz contenu dans un volume donn&eacute;. Elle se mesure en pascals dans le syst&egrave;me international (symbole Pa), mais se mesure plut&ocirc;t en bars en plong&eacute;e :  1bar=100000Pa=1kg\/cm2  En plong&eacute;e, on distingue plusieurs types de pression : &bull;\tLa pression absolue (ou pression ambiante, ou pression environnante),&bull;\tLa pression hydrostatique,&bull;\tla haute pression, la pression interm&eacute;diaire et la basse pression,&bull;\tLa mi-pression,&bull;\tLa notion de pression partielle&amp;quot;&lt;\/div&gt;\"  href=\"https:\/\/www.atollplongee.com\/en\/glossary\/pression\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>pression<\/a> &laquo; relative &raquo; par rapport &agrave; la <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Pression Atmosph&eacute;rique&lt;span class=&amp;quot;dashicons &amp;quot; data-icon=&amp;quot;&amp;quot; style=&amp;quot;display:inline;vertical-align:baseline;&amp;quot;&gt;&lt;\/span&gt;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;quot;La pression atmosph&eacute;rique d&eacute;signe la pression qui r&egrave;gne dans l&amp;#039;atmosph&egrave;re terrestre. Elle est due au poids de la colonne d&amp;#039;air se trouvant au-dessus d&amp;#039;une certaine surface et vaut environ 1013 hPa (hectopascals) au niveau de la mer. En plong&eacute;e, une telle pr&eacute;cision dans le chiffre est superflue : on se contente en g&eacute;n&eacute;ral de retenir qu&amp;#039;elle vaut environ 1 bar (1 bar = 1000 hPa). Au niveau de la mer, la pression atmosph&eacute;rique vaut 1,013 bars, soit aussi en unit&eacute;s moins classiques en plong&eacute;e : &bull;\t1,033 kgf \/cm&sup2; (kilogramme-force par centim&egrave;tre carr&eacute;),&bull;\t760 mmHg (millim&egrave;tres de mercure).&amp;quot;&lt;\/div&gt;\"  href=\"https:\/\/www.atollplongee.com\/en\/glossary\/pression-atmospherique\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>pression atmosph&eacute;rique<\/a>. Quand il indique 0, la bouteille est pleine d&rsquo;air &agrave; 1 <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Bar&lt;span class=&amp;quot;dashicons &amp;quot; data-icon=&amp;quot;&amp;quot; style=&amp;quot;display:inline;vertical-align:baseline;&amp;quot;&gt;&lt;\/span&gt;&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Le bar est une unit&eacute; de mesure de la pression qui ne fait pas partie du syst&egrave;me international, mais qui est largement utilis&eacute;e en plong&eacute;e. 1bar=100000Pa=1kg\/cm2&lt;\/div&gt;\"  href=\"https:\/\/www.atollplongee.com\/en\/glossary\/bar\/\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>bar<\/a>.&rdquo;<\/p>","protected":false},"excerpt":{"rendered":"<p>&#8220;Appareil permettant de conna\u00eetre la pression d\u2019air disponible dans une bouteille de plong\u00e9e. Il existe des manom\u00e8tres de surface et des manom\u00e8tres immergeables. Le manom\u00e8tre indique une pression \u00ab relative \u00bb par rapport \u00e0 la pression atmosph\u00e9rique. Quand il indique 0, la bouteille est pleine d\u2019air \u00e0 1 bar.&#8221;<\/p>","protected":false},"author":13,"featured_media":0,"menu_order":0,"template":"","meta":[],"glossary-categories":[],"glossary-tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Manom\u00e8tre - Atoll Plong\u00e9e Marseille<\/title>\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.atollplongee.com\/en\/glossary\/manometre\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manom\u00e8tre - Atoll Plong\u00e9e Marseille\" \/>\n<meta property=\"og:description\" content=\"&#8220;Appareil permettant de conna\u00eetre la pression d\u2019air disponible dans une bouteille de plong\u00e9e. 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