{"id":9673,"date":"2026-03-16T04:38:51","date_gmt":"2026-03-16T04:38:51","guid":{"rendered":"https:\/\/vntechgroup.com.vn\/?p=9673"},"modified":"2026-03-16T04:53:13","modified_gmt":"2026-03-16T04:53:13","slug":"5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications","status":"publish","type":"post","link":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/","title":{"rendered":"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications"},"content":{"rendered":"

In many industries such as oil & gas, chemical processing, food & beverage, and water treatment<\/strong>, measuring the liquid level in tanks is a critical parameter for ensuring safe and stable operations<\/strong>.<\/p>\n

Accurate level measurement helps operators monitor inventory, prevent overflow, and maintain efficient production processes.<\/p>\n

However, in real-world industrial environments, many level measurement systems perform poorly or experience frequent failures due to incorrect sensor selection or improper installation<\/strong>.<\/p>\n

Below are five common mistakes when selecting liquid level sensors in industrial applications<\/strong> and how to avoid them.<\/p>\n

1. Choosing the Wrong Level Measurement Technology<\/h1>\n

Today, there are many level measurement technologies<\/strong> available, and each is designed for specific applications.<\/p>\n

Common technologies include:<\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n
Technology<\/th>\nTypical Applications<\/th>\n<\/tr>\n<\/thead>\n
Radar level sensor<\/td>\nChemicals, oils, solvents<\/td>\n<\/tr>\n
Ultrasonic sensor<\/td>\nClean water, wastewater<\/td>\n<\/tr>\n
Differential pressure<\/td>\nPressurized tanks<\/td>\n<\/tr>\n
Capacitive sensor<\/td>\nLiquids with high dielectric constant<\/td>\n<\/tr>\n
Hydrostatic level sensor<\/td>\nDeep wells, wastewater<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

Selecting the wrong technology<\/strong> can lead to several issues such as:<\/p>\n

    \n
  • \n

    Unstable measurement signals<\/p>\n<\/li>\n

  • \n

    High measurement errors<\/p>\n<\/li>\n

  • \n

    Loss of level signal<\/p>\n<\/li>\n<\/ul>\n

    Therefore, understanding the process conditions and application requirements<\/strong> is the first and most important step when selecting a level sensor.<\/p>\n

    2. Ignoring the Dielectric Constant of the Liquid<\/h1>\n

    For technologies such as radar or capacitive level sensors<\/strong>, the dielectric constant (\u03b5r)<\/strong> of the liquid plays a crucial role in signal reflection.<\/p>\n

    The dielectric constant directly affects how well the signal is reflected back to the sensor.<\/p>\n

    Examples:<\/p>\n

      \n
    • \n

      Diesel fuel: \u03b5r \u2248 2<\/p>\n<\/li>\n

    • \n

      Water: \u03b5r \u2248 80<\/p>\n<\/li>\n<\/ul>\n

      Liquids with a low dielectric constant<\/strong> produce weaker signal reflections, which may cause:<\/p>\n

        \n
      • \n

        Poor signal quality<\/p>\n<\/li>\n

      • \n

        Reduced measurement accuracy<\/p>\n<\/li>\n

      • \n

        Signal loss<\/p>\n<\/li>\n<\/ul>\n

        Before selecting a level measurement device, it is important to identify the physical properties of the liquid being measured<\/strong>.<\/p>\n

        \"\"<\/p>\n

        3. Installing the Sensor in the Wrong Location<\/h1>\n

        Even when the correct sensor type is selected, improper installation<\/strong> can still cause measurement problems.<\/p>\n

        Common installation mistakes include placing the sensor:<\/p>\n

          \n
        • \n

          Too close to the tank wall<\/p>\n<\/li>\n

        • \n

          Near the inlet pipe<\/p>\n<\/li>\n

        • \n

          Close to agitators or internal structures<\/p>\n<\/li>\n<\/ul>\n

          These obstacles may create false reflections or signal interference<\/strong>, resulting in fluctuating or incorrect level readings.<\/p>\n

          To ensure accurate measurements:<\/p>\n

            \n
          • \n

            Install sensors away from obstacles<\/p>\n<\/li>\n

          • \n

            Follow manufacturer installation guidelines<\/p>\n<\/li>\n

          • \n

            Consider the internal structure of the tank<\/p>\n<\/li>\n<\/ul>\n

            \"\"<\/p>\n

            4. Ignoring Process Conditions Inside the Tank<\/h1>\n

            Industrial tanks often operate under challenging process conditions<\/strong> that can affect sensor performance.<\/p>\n

            Common factors include:<\/p>\n

              \n
            • \n

              Foam on the liquid surface<\/p>\n<\/li>\n

            • \n

              Chemical vapors<\/p>\n<\/li>\n

            • \n

              High temperature<\/p>\n<\/li>\n

            • \n

              High pressure<\/p>\n<\/li>\n

            • \n

              Condensation<\/p>\n<\/li>\n<\/ul>\n

              Certain technologies are more sensitive to these conditions, particularly:<\/p>\n

                \n
              • \n

                Ultrasonic level sensors<\/p>\n<\/li>\n

              • \n

                Capacitive sensors<\/p>\n<\/li>\n

              • \n

                Some radar configurations<\/p>\n<\/li>\n<\/ul>\n

                Evaluating actual operating conditions<\/strong> before selecting the sensor is essential to ensure long-term measurement reliability.<\/p>\n

                \"\"<\/p>\n

                5. Overlooking Safety Requirements in Hazardous Areas<\/h1>\n

                Industries such as oil & gas, chemical processing, and fuel storage<\/strong> often operate in hazardous environments<\/strong> where explosive gases or vapors may be present.<\/p>\n

                In these areas, instrumentation must comply with international safety certifications such as:<\/p>\n

                  \n
                • \n

                  ATEX<\/p>\n<\/li>\n

                • \n

                  IECEx<\/p>\n<\/li>\n

                • \n

                  FM approval<\/p>\n<\/li>\n<\/ul>\n

                  Using equipment without the required certifications can lead to:<\/p>\n

                    \n
                  • \n

                    Safety risks<\/p>\n<\/li>\n

                  • \n

                    Potential explosions<\/p>\n<\/li>\n

                  • \n

                    Regulatory violations<\/p>\n<\/li>\n<\/ul>\n

                    Therefore, selecting certified level measurement devices<\/strong> is critical when operating in hazardous locations.<\/p>\n

                    \"\"<\/p>\n

                    Conclusion<\/h1>\n

                    Selecting the right liquid level sensor<\/strong> is essential for ensuring reliable and safe industrial operations.<\/p>\n

                    Avoiding common mistakes such as:<\/p>\n

                      \n
                    • \n

                      Choosing the wrong technology<\/p>\n<\/li>\n

                    • \n

                      Ignoring liquid properties<\/p>\n<\/li>\n

                    • \n

                      Improper installation<\/p>\n<\/li>\n

                    • \n

                      Overlooking process conditions<\/p>\n<\/li>\n

                    • \n

                      Ignoring safety certifications<\/p>\n<\/li>\n<\/ul>\n

                      can significantly improve measurement accuracy, system reliability, and plant safety<\/strong>.<\/p>\n

                      By carefully evaluating application requirements and selecting the appropriate level measurement technology, companies can reduce maintenance costs, minimize downtime, and improve overall operational efficiency.<\/p>\n","protected":false},"excerpt":{"rendered":"

                      In many industries such as oil & gas, chemical processing, food & beverage, and water treatment, measuring the liquid level in tanks is a critical parameter for ensuring safe and stable operations. Accurate level measurement helps operators monitor inventory, prevent overflow, and maintain efficient production processes. However, in real-world industrial environments, many level measurement systems<\/p>\n","protected":false},"author":8,"featured_media":9675,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[209],"tags":[],"class_list":["post-9673","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solutions"],"acf":[],"yoast_head":"\n5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC\" \/>\n<meta property=\"og:description\" content=\"In many industries such as oil & gas, chemical processing, food & beverage, and water treatment, measuring the liquid level in tanks is a critical parameter for ensuring safe and stable operations. Accurate level measurement helps operators monitor inventory, prevent overflow, and maintain efficient production processes. However, in real-world industrial environments, many level measurement systems\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/\" \/>\n<meta property=\"og:site_name\" content=\"VN Tech Group JSC\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-16T04:38:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-16T04:53:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1301\" \/>\n\t<meta property=\"og:image:height\" content=\"816\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin-nhat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin-nhat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/\",\"url\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/\",\"name\":\"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC\",\"isPartOf\":{\"@id\":\"https:\/\/vntechgroup.com.vn\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png\",\"datePublished\":\"2026-03-16T04:38:51+00:00\",\"dateModified\":\"2026-03-16T04:53:13+00:00\",\"author\":{\"@id\":\"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/493bdea7c9f970cd7ff533b1f17665c5\"},\"breadcrumb\":{\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage\",\"url\":\"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png\",\"contentUrl\":\"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png\",\"width\":1301,\"height\":816},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Trang ch\u1ee7\",\"item\":\"https:\/\/vntechgroup.com.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/vntechgroup.com.vn\/#website\",\"url\":\"https:\/\/vntechgroup.com.vn\/\",\"name\":\"VN Tech Group JSC\",\"description\":\"C\u00f4ng ty C\u1ed5 Ph\u1ea7n Thi\u1ebft B\u1ecb \u0110o L\u01b0\u1eddng & Van C\u00f4ng Nghi\u1ec7p Vi\u1ec7t Nh\u1eadt\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/vntechgroup.com.vn\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/493bdea7c9f970cd7ff533b1f17665c5\",\"name\":\"admin-nhat\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c2ea641e34c60aa3e80efc1bc2d69242?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c2ea641e34c60aa3e80efc1bc2d69242?s=96&d=mm&r=g\",\"caption\":\"admin-nhat\"},\"url\":\"https:\/\/vntechgroup.com.vn\/en\/author\/admin-nhat\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/","og_locale":"en_US","og_type":"article","og_title":"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC","og_description":"In many industries such as oil & gas, chemical processing, food & beverage, and water treatment, measuring the liquid level in tanks is a critical parameter for ensuring safe and stable operations. Accurate level measurement helps operators monitor inventory, prevent overflow, and maintain efficient production processes. However, in real-world industrial environments, many level measurement systems","og_url":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/","og_site_name":"VN Tech Group JSC","article_published_time":"2026-03-16T04:38:51+00:00","article_modified_time":"2026-03-16T04:53:13+00:00","og_image":[{"width":1301,"height":816,"url":"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png","type":"image\/png"}],"author":"admin-nhat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin-nhat","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/","url":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/","name":"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications - VN Tech Group JSC","isPartOf":{"@id":"https:\/\/vntechgroup.com.vn\/#website"},"primaryImageOfPage":{"@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage"},"image":{"@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage"},"thumbnailUrl":"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png","datePublished":"2026-03-16T04:38:51+00:00","dateModified":"2026-03-16T04:53:13+00:00","author":{"@id":"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/493bdea7c9f970cd7ff533b1f17665c5"},"breadcrumb":{"@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#primaryimage","url":"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png","contentUrl":"https:\/\/vntechgroup.com.vn\/wp-content\/uploads\/2026\/03\/5-sai-lam-EN-da-sua.png","width":1301,"height":816},{"@type":"BreadcrumbList","@id":"https:\/\/vntechgroup.com.vn\/en\/5-common-mistakes-when-selecting-liquid-level-sensors-in-industrial-applications\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Trang ch\u1ee7","item":"https:\/\/vntechgroup.com.vn\/"},{"@type":"ListItem","position":2,"name":"5 Common Mistakes When Selecting Liquid Level Sensors in Industrial Applications"}]},{"@type":"WebSite","@id":"https:\/\/vntechgroup.com.vn\/#website","url":"https:\/\/vntechgroup.com.vn\/","name":"VN Tech Group JSC","description":"C\u00f4ng ty C\u1ed5 Ph\u1ea7n Thi\u1ebft B\u1ecb \u0110o L\u01b0\u1eddng & Van C\u00f4ng Nghi\u1ec7p Vi\u1ec7t Nh\u1eadt","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/vntechgroup.com.vn\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/493bdea7c9f970cd7ff533b1f17665c5","name":"admin-nhat","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/vntechgroup.com.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c2ea641e34c60aa3e80efc1bc2d69242?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c2ea641e34c60aa3e80efc1bc2d69242?s=96&d=mm&r=g","caption":"admin-nhat"},"url":"https:\/\/vntechgroup.com.vn\/en\/author\/admin-nhat\/"}]}},"_links":{"self":[{"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/posts\/9673"}],"collection":[{"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/comments?post=9673"}],"version-history":[{"count":6,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/posts\/9673\/revisions"}],"predecessor-version":[{"id":9680,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/posts\/9673\/revisions\/9680"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/media\/9675"}],"wp:attachment":[{"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/media?parent=9673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/categories?post=9673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vntechgroup.com.vn\/en\/wp-json\/wp\/v2\/tags?post=9673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}