{"version":"1.0","provider_name":"DiverTown","provider_url":"https:\/\/www.divertown.com\/en\/","author_name":"DiverTown","author_url":"https:\/\/www.divertown.com\/en\/author\/divertown\/","title":"What is Active Addition for Semi-Closed Circuit Rebreathers? - DiverTown","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"FbsRVYgzIC\"><a href=\"https:\/\/www.divertown.com\/en\/active-addition\/\">What is Active Addition for Semi-Closed Circuit Rebreathers?<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.divertown.com\/en\/active-addition\/embed\/#?secret=FbsRVYgzIC\" width=\"600\" height=\"338\" title=\"&#8220;What is Active Addition for Semi-Closed Circuit Rebreathers?&#8221; &#8212; DiverTown\" data-secret=\"FbsRVYgzIC\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.divertown.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.divertown.com\/wp-content\/uploads\/2024\/09\/man-swim-underwater.jpg","thumbnail_width":2500,"thumbnail_height":1667,"description":"The active addition system is a key component of SCRs, controlling the feed gas's addition to the breathing loop. The mechanism adds a specific quantity of gas regardless of the current loop volume, providing a constant supply of breathable gas while preventing hyperoxic or hypoxic conditions. At its core, the active addition system consists of a supply valve controlled by the diver or an electronic mechanism. When the diver inhales, the decrease in loop volume triggers the valve to release more gas into the loop. In electronically controlled systems, gas is added at fixed intervals, ensuring a continuous supply."}