1.0Wiesner Prüftechnik GmbHhttps://www.drwiesner.de/en/Sstrauchhttps://www.drwiesner.de/en/author/sstrauch/rich600338<blockquote class="wp-embedded-content" data-secret="ZyuKl5vyoX"><a href="https://www.drwiesner.de/en/glossary/differential-pressure-method/">Differential Pressure Method</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.drwiesner.de/en/glossary/differential-pressure-method/embed/#?secret=ZyuKl5vyoX" width="600" height="338" title="“Differential Pressure Method” — Wiesner Prüftechnik GmbH" data-secret="ZyuKl5vyoX" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=https://www.drwiesner.de/wp-includes/js/wp-embed.min.js </script> The differential pressure method is currently used for most leak tests in industrial series production. Method: The test specimen is sealed, and the test chamber, consisting of the test specimen, test fixture, connecting lines, and the test device, is pressurized or evacuated with air, or less commonly with nitrogen or other gases, and then sealed […]