{"version":"1.0","provider_name":"\u062e\u0628\u064a\u0631\u0643 \u0641\u064a \u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0636\u063a\u0637 \u0648\u0623\u062c\u0647\u0632\u0629 \u0627\u0644\u0625\u0631\u0633\u0627\u0644 \u0627\u0644\u0630\u0643\u064a\u0629 - SJ Gauge","provider_url":"https:\/\/www.sj-gauge.com\/ar","author_name":"SJ Gauge","author_url":"https:\/\/www.sj-gauge.com\/ar\/author\/sj-gauge\/","title":"Why Can`t a Vacuum Gauge Reach -760 mmHg? How Does a Pressure Gauge Measure Vacuum?","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Ob83Nd87b8\"><a href=\"https:\/\/www.sj-gauge.com\/ar\/pressure-gauge-vacuum-issues\/\">\u0644\u0645\u0627\u0630\u0627 \u0644\u0627 \u064a\u0633\u062a\u0637\u064a\u0639 \u0645\u0642\u064a\u0627\u0633 \u0627\u0644\u0641\u0631\u0627\u063a \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 -760 mmHg\u061f \u0643\u064a\u0641 \u064a\u0642\u064a\u0633 \u0645\u0642\u064a\u0627\u0633 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0641\u0631\u0627\u063a\u061f<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.sj-gauge.com\/ar\/pressure-gauge-vacuum-issues\/embed\/#?secret=Ob83Nd87b8\" width=\"600\" height=\"338\" title=\"&#8220;Why Can`t a Vacuum Gauge Reach -760 mmHg? How Does a Pressure Gauge Measure Vacuum?&#8221; &#8212; Your Expert in Pressure Temp and Smart Transmitters - SJ Gauge\" data-secret=\"Ob83Nd87b8\" 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.sj-gauge.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/04\/SJ-Gauge-Pressure-Gauge-Measure-VacuumBN.jpg","thumbnail_width":800,"thumbnail_height":500,"description":"A vacuum gauge should reach -760 mmHg under ideal conditions, but in real applications, it often falls short. Learn the common causes such as leaks, faulty gauges, and system limitations, and how to improve vacuum performance."}