{"id":14281,"date":"2021-04-21T13:25:12","date_gmt":"2021-04-21T18:25:12","guid":{"rendered":"https:\/\/blog.wika.com\/us\/\/?p=14281"},"modified":"2023-08-25T01:57:43","modified_gmt":"2023-08-25T06:57:43","slug":"reasons-to-choose-liquid-filled-industrial-pressure-gauge","status":"publish","type":"post","link":"https:\/\/blog.wika.com\/us\/knowhow\/reasons-to-choose-liquid-filled-industrial-pressure-gauge\/","title":{"rendered":"Reasons for Choosing a Liquid-Filled Industrial Pressure Gauge"},"content":{"rendered":"<p><strong>Liquid-filled gauges surpass dry gauges for two main reasons: performance and extended service life. Pressure gauges that are filled with a liquid, usually glycerin or silicone oil, perform better in less-than-ideal conditions. They are also more economical in the long run, as liquid-filled gauges suffer fewer breakdowns than dry gauges. <\/strong><\/p>\n<h2>Why Pressure Gauges Fail<\/h2>\n<p><a href=\"https:\/\/www.wika.com\/en-us\/pressure_gauges.WIKA\" rel=\"external\" target=\"_blank\">Pressure gauges<\/a> are robust, but these <a href=\"https:\/\/blog.wika.com\/us\/\/knowhow\/8-common-reasons-for-pressure-gauge-failure\/\">mechanical instruments can fail<\/a> with prolonged exposure to the following conditions:<\/p>\n<ul>\n<li>Mechanical vibration and pulsation<\/li>\n<li>Pressure spikes<\/li>\n<li>Humidity and moisture<\/li>\n<\/ul>\n<p>The primary reason for gauge failure is <strong>vibration and pulsation<\/strong>. In a traditional dry gauge, prolonged mechanical movement can damage the instrument\u2019s delicate links, pivots, and pinions. This wear and tear leads to inconsistent performance and, eventually, loss of functionality. <strong>Pressure spikes<\/strong> are also problematic, as the dramatic change can bend and even break the gauge\u2019s pointer.<\/p>\n<p><em>The best industry practice is to liquid fill the gauge. <\/em>Case fill protects the gauge\u2019s mechanisms by dampening system vibrations, pulsations, and pressure spikes. It also eliminates pointer flutter.<\/p>\n<p><strong>Humidity and moisture <\/strong>pose two main problems for dry gauges. First, condensation behind the gauge window, caused mainly by changes in ambient temperature, creates a fogging effect; this makes it difficult to read the dial. Second, remaining condensation inside the gauge will freeze at low temperatures and coat the delicate movement with a layer of ice; this will prevent the movement from functioning and eventually lead to a gauge failure.<\/p>\n<p><em>Solution: <\/em>Liquid filling prevents moisture from forming inside the case. Liquid-filled gauges are also sealed, further preventing internal condensation and protecting gauge movement during icing conditions.<\/p>\n<h2>Which Case Fill to Use in a Pressure Gauge<\/h2>\n<p>The choice of fill fluid largely depends on ambient temperature. In general, <strong>glycerin<\/strong> is used in moderate temperatures, not lower than \u22124\u02daF (\u221220\u02daC), while <strong>silicone oil <\/strong>is the case fill of choice for <span>very cold temperatures down to \u221240\u02daF\/\u00b0C<\/span>. For even more extreme temperatures, check out WIKA\u2019s <a href=\"https:\/\/blog.wika.com\/us\/\/products\/pressure-products\/liquid-filled-pressure-gauge-extremely-low-temperatures\/\">POLARgauge<sup><span>\u00ae<\/span><\/sup> family<\/a>, suitable for arctic ambient temperatures down to \u221294\u02daF (\u221270\u00b0C). Gauges with built-in electrical options, such as switches and transmitters, can also be filled using silicone case fill. The chemically inert <strong>Halocarbon oil <\/strong>is a good choice for use around oxygen, chlorine, and other reactive gases.<\/p>\n<h2>The Advantages of Liquid-Filled Gauges<\/h2>\n<p>In summary, <a href=\"https:\/\/blog.wika.com\/us\/\/products\/pressure-products\/wikas-liquid-filled-brass-gauge-offers-unparalleled-durability-precision-and-long-service-life\/\">liquid-filled pressure gauges<\/a> offer numerous benefits over dry-case pressure gauges:<\/p>\n<ul>\n<li>\n\n      <div class=\"wp-caption alignright\" style=\"max-width:238px;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12124\" src=\"https:\/\/blog.wika.com\/us\/\/files\/2019\/08\/213.40.png\" alt=\"\" width=\"230\" height=\"273\" srcset=\"https:\/\/blog.wika.com\/us\/files\/2019\/08\/213.40.png 286w, https:\/\/blog.wika.com\/us\/files\/2019\/08\/213.40-127x150.png 127w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/><p class=\"wp-caption-text\">Model 213.40 liquid-filled brass gauge<\/p><\/div>\n    <br \/>\n<strong>Long-term cost savings. <\/strong>Viscous fluid filling lubricates the gauge\u2019s mechanism. Over time, this option saves users money by reducing unscheduled downtime and prolonging the gauge\u2019s service life.<\/li>\n<li><strong>Fewer failed gauges. <\/strong>Liquid fill protects against severe vibration, pulsation, and temperature fluctuations \u2013 major factors in the breakdown of dry gauges.<\/li>\n<li><strong>Ease of reading.<\/strong> Without condensation buildup and pointer flutter, users have fewer difficulties in reading the gauge.<span style=\"text-decoration: line-through\"><\/span><\/li>\n<li><strong>Extra durability.<\/strong> Not only are liquid-filled gauges sealed, but some also have very rugged construction. Check out the <a href=\"https:\/\/www.wika.com\/en-us\/213_40.WIKA\" rel=\"external\" target=\"_blank\">213.40<\/a>, a Bourdon tube gauge featuring a cast-brass case and socket, making it ideal for heavy-duty service life.<\/li>\n<\/ul>\n<h2>Liquid-Filled Gauges from WIKA<\/h2>\n<p>While some customers are concerned about the extra cost of liquid filling for a pressure gauge, the long-term payoff is clear: Better protection against vibration, pulsation, corrosion, and moisture makes for a longer-lasting, more reliable instrument. WIKA\u2019s liquid-filled gauges are highly durable, meaning lower cost and better accuracy over time. Our pressure portfolio includes a number of customizable process gauges, including instruments built for the demanding conditions of the\u00a0<a href=\"https:\/\/www.wika.com\/en-us\/oil_and_gas_up_mid_and_downstream.WIKA\" rel=\"external\" target=\"_blank\">oil and gas industry<\/a>.<\/p>\n<p>At the same time, certain industries should avoid instruments with liquid filling. For them, WIKA offers <a href=\"https:\/\/blog.wika.com\/us\/\/knowhow\/dampened-movement-pressure-gauges-bimetal-thermometers\/\">dampened movement industrial instrumentation<\/a> and <a href=\"https:\/\/blog.wika.com\/us\/\/applications\/direct-drive-pressure-gauges-aerospace-military-oxygen-systems\/\">direct drive pressure gauges<\/a>.<\/p>\n<p>This <a href=\"https:\/\/www.youtube.com\/watch?v=ILTgNUow3i4\" rel=\"external\" target=\"_blank\">WIKA video<\/a> summarizes the advantages and applications of liquid-filled pressure gauges. For more information about choosing the right pressure solutions for your particular application and budget, contact WIKA USA\u2019s pressure specialists.\u00a0<\/p>\n<div style=\"width: 100%;float: left\"><a class=\"button white\" style=\"float: right\" href=\"https:\/\/www.wika.com\/en-us\/contact.WIKA\" rel=\"external\" target=\"_blank\"><span>Contact Us<\/span><\/a><\/div>\n<div><strong>Products mentioned in this post:<\/strong><\/div>\n<ul>\n<li><a href=\"https:\/\/www.wika.com\/en-us\/pg23lt.WIKA\" rel=\"external\" target=\"_blank\">PG23LT Bourdon tube pressure gauge for extremely low ambient temperatures<\/a><\/li>\n<li><a href=\"https:\/\/www.wika.com\/en-us\/213_40.WIKA\" rel=\"external\" target=\"_blank\">213.40 Bourdon tube brass gauge, industrial series<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Liquid-filled gauges surpass dry gauges for two main reasons: performance and extended service life. Pressure gauges that are filled with a liquid, usually glycerin or silicone oil, perform better in less-than-ideal conditions. They are also more economical in the long run, as liquid-filled gauges suffer fewer breakdowns than dry gauges. Why Pressure Gauges Fail Pressure [&hellip;]<\/p>\n","protected":false},"author":187,"featured_media":14285,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,220],"tags":[525,830,479,703,264],"class_list":["post-14281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowhow","category-pressure-products","tag-direct-drive-gauge","tag-high-temperature","tag-liquid-filled-gauges","tag-oil-and-gas","tag-vibrationshock"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Reasons to Choose a Liquid-Filled Industrial Pressure Gauge - WIKA blog<\/title>\n<meta name=\"description\" content=\"Liquid-filled industrial pressure gauges outperform dry gauges in challenging conditions, resulting in greater accuracy and long-term cost savings.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.wika.com\/us\/knowhow\/reasons-to-choose-liquid-filled-industrial-pressure-gauge\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reasons to Choose a Liquid-Filled Industrial Pressure Gauge - 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