{"id":4223,"date":"2024-04-13T23:36:00","date_gmt":"2024-04-13T15:36:00","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=4223"},"modified":"2026-04-20T20:25:55","modified_gmt":"2026-04-20T12:25:55","slug":"pressure-gauge-vacuum-issues","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/","title":{"rendered":"\u00bfPor qu\u00e9 un vacu\u00f3metro no alcanza -760 mmHg? \u00bfC\u00f3mo mide el vac\u00edo un man\u00f3metro?"},"content":{"rendered":"<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Un vacu\u00f3metro se utiliza para medir el nivel de vac\u00edo dentro de un sistema. En general, se toma la presi\u00f3n atmosf\u00e9rica como punto cero de referencia, por lo que, bajo presi\u00f3n atmosf\u00e9rica est\u00e1ndar a nivel del mar, la lectura m\u00e1xima de un vacu\u00f3metro es de aproximadamente -760 mmHg (o -76 cmHg), lo que representa una condici\u00f3n de vac\u00edo casi perfecta. Sin embargo, en el uso real, muchas personas descubren que el vacu\u00f3metro a menudo no puede alcanzar -760 mmHg. Esto no significa necesariamente que el vacu\u00f3metro est\u00e9 defectuoso. En muchos casos, puede estar relacionado con el estado del equipo, la instalaci\u00f3n o incluso el entorno. A continuaci\u00f3n se indican algunas de las razones m\u00e1s common.<\/p>\n<\/blockquote>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabla de contenidos\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7b1e1c;color:#7b1e1c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7b1e1c;color:#7b1e1c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#1-the-vacuum-gauge-itself-is-faulty\" >1. El propio vacu\u00f3metro es defectuoso<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#2-the-piping-or-fittings-are-not-completely-sealed\" >2. Las tuber\u00edas o accesorios no est\u00e1n completamente sellados<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#3-the-vacuum-pump-or-vacuum-motor-has-performance-limitations\" >3. La bomba de vac\u00edo o el motor de vac\u00edo tienen limitaciones de rendimiento<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#4-the-pressure-inside-the-gauge-case-is-not-balanced-with-ambient-pressure\" >4. La presi\u00f3n dentro de la caja del man\u00f3metro no est\u00e1 equilibrada con la presi\u00f3n ambiente.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#5-the-effect-of-atmospheric-pressure-and-altitude\" >5. El efecto de la presi\u00f3n atmosf\u00e9rica y la altitud<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/#conclusion\" >Conclusi\u00f3n<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-36f2f2ff83901a7e1dd62cd567f955f8\" id=\"h-1-the-vacuum-gauge-itself-is-faulty\"><span class=\"ez-toc-section\" id=\"1-the-vacuum-gauge-itself-is-faulty\"><\/span>1. El propio vacu\u00f3metro es defectuoso<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Un vacu\u00f3metro es un instrumento relativamente sensible y no es resistente a los golpes. Si se golpea o se cae durante el transporte, la instalaci\u00f3n o el uso, pueden producirse problemas como la no vuelta a cero, lecturas inexactas o desviaci\u00f3n de la medici\u00f3n. Por esta raz\u00f3n, cada vacu\u00f3metro debe inspeccionarse antes de su env\u00edo para asegurarse de que funciona correctamente. Tambi\u00e9n debe protegerse cuidadosamente durante el transporte y la instalaci\u00f3n para evitar da\u00f1os causados por colisi\u00f3n. Si el propio vacu\u00f3metro ha resultado da\u00f1ado, es posible que no muestre la lectura correcta aunque el nivel de vac\u00edo del sistema sea normal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-72f66da7a7e89bf3d305b60db3740c47\" id=\"h-2-the-piping-or-fittings-are-not-completely-sealed\"><span class=\"ez-toc-section\" id=\"2-the-piping-or-fittings-are-not-completely-sealed\"><\/span>2. Las tuber\u00edas o accesorios no est\u00e1n completamente sellados<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>La medici\u00f3n del vac\u00edo se ve muy afectada por la presi\u00f3n atmosf\u00e9rica. Si hay incluso una peque\u00f1\u00edsima fuga en el sistema de vac\u00edo que permita la entrada de aire en la tuber\u00eda, el sistema no podr\u00e1 alcanzar el nivel de vac\u00edo deseado. Por lo tanto, si desea que el vacu\u00f3metro se aproxime a su lectura de vac\u00edo m\u00e1xima, debe asegurarse de que todo el proceso, desde la bomba de vac\u00edo y las tuber\u00edas hasta los accesorios y el propio vacu\u00f3metro, est\u00e9 completamente sellado. Incluso una peque\u00f1a fuga en un punto de conexi\u00f3n puede impedir que el vacu\u00f3metro alcance -760 mmHg.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-8ae3487328c853785c3237935cbb4304\" id=\"h-3-the-vacuum-pump-or-vacuum-motor-has-performance-limitations\"><span class=\"ez-toc-section\" id=\"3-the-vacuum-pump-or-vacuum-motor-has-performance-limitations\"><\/span>3. La bomba de vac\u00edo o el motor de vac\u00edo tienen limitaciones de rendimiento<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Algunas bombas de vac\u00edo est\u00e1n dise\u00f1adas para alcanzar s\u00f3lo una condici\u00f3n de casi vac\u00edo en lugar de un vac\u00edo total te\u00f3rico real. Adem\u00e1s, si la bomba es vieja, est\u00e1 desgastada o mal mantenida, su rendimiento de vac\u00edo puede disminuir con el tiempo. En otras palabras, aunque el man\u00f3metro funcione correctamente y no haya fugas en el sistema, el nivel de vac\u00edo puede no alcanzar el valor ideal si la propia bomba no puede funcionar a pleno rendimiento.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-67b4bc342eac86e3222a57f36076ca41\" id=\"h-4-the-pressure-inside-the-gauge-case-is-not-balanced-with-ambient-pressure\"><span class=\"ez-toc-section\" id=\"4-the-pressure-inside-the-gauge-case-is-not-balanced-with-ambient-pressure\"><\/span>4. La presi\u00f3n dentro de la caja del man\u00f3metro no est\u00e1 equilibrada con la presi\u00f3n ambiente.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Este problema no siempre impide que el man\u00f3metro alcance -760 mmHg, pero puede causar lecturas inexactas. Si el interior de la caja del man\u00f3metro est\u00e1 sellado y no se ventila al ambiente exterior, la presi\u00f3n interna de la caja puede diferir de la presi\u00f3n atmosf\u00e9rica circundante, provocando el desplazamiento del punto cero de medici\u00f3n. En algunos casos, si la temperatura en el interior de la caja del man\u00f3metro aumenta y no hay intercambio de aire, la presi\u00f3n interna puede llegar a ser ligeramente superior a la presi\u00f3n exterior, haciendo que la aguja no vuelva a cero o provocando errores de medici\u00f3n. En estas situaciones, la soluci\u00f3n suele ser sencilla: abrir el tap\u00f3n de llenado o el respiradero para que la presi\u00f3n del interior de la caja se iguale con la presi\u00f3n ambiente, permitiendo que el man\u00f3metro mida con mayor precisi\u00f3n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-88c9970c20c2b36711b9e6bd3b49b200\" id=\"h-5-the-effect-of-atmospheric-pressure-and-altitude\"><span class=\"ez-toc-section\" id=\"5-the-effect-of-atmospheric-pressure-and-altitude\"><\/span>5. El efecto de la presi\u00f3n atmosf\u00e9rica y la altitud<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Muchas personas suponen que un vacu\u00f3metro debe indicar -760 mmHg para considerarse normal, pero en realidad se basa en la presi\u00f3n atmosf\u00e9rica est\u00e1ndar a nivel del mar. La presi\u00f3n atmosf\u00e9rica est\u00e1ndar se refiere a la presi\u00f3n absoluta medida a nivel del mar, que es de aproximadamente 760 mmHg. Sin embargo, como el punto cero de un vacu\u00f3metro se basa en la presi\u00f3n atmosf\u00e9rica circundante, cambiar\u00e1 en funci\u00f3n de la altitud del lugar de medici\u00f3n. Por ejemplo, a una altitud de unos 240 metros, la presi\u00f3n atmosf\u00e9rica local puede ser s\u00f3lo de unos 740 mmHg. En este caso, aunque el interior de la tuber\u00eda haya alcanzado un vac\u00edo casi total, es posible que el vacu\u00f3metro s\u00f3lo indique -740 mmHg en lugar de -760 mmHg. Esto significa que una lectura del vacu\u00f3metro por debajo de -760 mmHg no siempre es se\u00f1al de fallo del equipo; puede reflejar simplemente el efecto natural de las condiciones atmosf\u00e9ricas locales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-palette-color-2-color has-text-color has-link-color wp-elements-6421794a017bba9c18be30b5cea78077\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>Conclusi\u00f3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>En general, un vacu\u00f3metro es un instrumento de medici\u00f3n sensible que puede verse influido por muchos factores externos, como el estado del propio vacu\u00f3metro, la estanqueidad del sistema de tuber\u00edas, la capacidad de la bomba de vac\u00edo, el equilibrio de presi\u00f3n dentro de la caja del vacu\u00f3metro y los cambios de presi\u00f3n atmosf\u00e9rica causados por la altitud. Por lo tanto, cuando un vacu\u00f3metro no puede alcanzar -760 mmHg, no debe suponerse autom\u00e1ticamente que el vacu\u00f3metro est\u00e1 defectuoso. En lugar de sustituir repetidamente el vacu\u00f3metro, es mejor comprobar primero las posibles causas anteriores para identificar el problema real y evitar tiempo y costes innecesarios.<br><\/p>","protected":false},"excerpt":{"rendered":"<p>A vacuum gauge is used to measure the vacuum level inside a system. In general, atmospheric pressure is taken as the reference zero point, so under standard atmospheric pressure at sea level, the maximum reading of a vacuum gauge is about -760 mmHg (or -76 cmHg), which represents a near-perfect vacuum condition. However, in actual [&hellip;]<\/p>","protected":false},"author":2,"featured_media":4309,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-4223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pressure"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Can\u2019t a Vacuum Gauge Reach -760 mmHg? Causes &amp; Solutions\uff5cSJ Gauge<\/title>\n<meta name=\"description\" content=\"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.\" \/>\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.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Can`t a Vacuum Gauge Reach -760 mmHg? How Does a Pressure Gauge Measure Vacuum?\" \/>\n<meta property=\"og:description\" content=\"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.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sj-gauge.com\/es\/pressure-gauge-vacuum-issues\/\" \/>\n<meta property=\"og:site_name\" content=\"Your Expert in Pressure Temp and Smart Transmitters - SJ Gauge\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-13T15:36:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-20T12:25:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/04\/SJ-Gauge-Pressure-Gauge-Measure-VacuumBN.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"SJ Gauge\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"SJ Gauge\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/pressure-gauge-vacuum-issues\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/pressure-gauge-vacuum-issues\\\/\"},\"author\":{\"name\":\"SJ Gauge\",\"@id\":\"https:\\\/\\\/www.sj-gauge.com\\\/#\\\/schema\\\/person\\\/cbc9e642e49a53b18b3eb832486bd52c\"},\"headline\":\"Why Can`t a Vacuum Gauge Reach -760 mmHg? 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