{"id":45454,"date":"2020-06-02T13:09:45","date_gmt":"2020-06-02T12:09:45","guid":{"rendered":"https:\/\/www.processindustryinformer.com\/product-finder\/product\/import-placeholder-for-td1-td2\/"},"modified":"2025-01-13T14:03:55","modified_gmt":"2025-01-13T14:03:55","slug":"thermatel-td1-td2","status":"publish","type":"product","link":"https:\/\/www.processindustryinformer.com\/product-finder\/product\/thermatel-td1-td2\/","title":{"rendered":"Thermatel TD1\/TD2"},"content":{"rendered":"<h2>Thermatel\u00ae Td1 And Td2 Flow\/level\/interface Switches<\/h2>\n<p>Thermatel TD1\/TD2 switches can easily be adjusted to detect flow (gases and liquids), level or liquid-liquid interface. TD1 is a line powered 24 V DC unit with integral electronics and a built-in DPDT relay. TD2 is either V DC or V AC line powered, has integral or remote electronics and offers additional LED indication, time delay and mA output for diagnostics and trending.<\/p>\n<p>With continuous diagnostics, automatic temperature compensation, narrow hysteresis and fast response time, TD1\/TD2 bring you the latest in thermal dispersion technology.<\/p>\n<p><strong>Operating Principle<\/strong><\/p>\n<p>The THERMATEL sensor consists of two RTD elements. One is the reference and the second is heated to a temperature above the process temperature. The electronics detect the temperature difference between the two elements. The temperature difference is greatest in air, then decreases when cooling occurs due to a change in media. An increase in the flow rate further decreases the temperature difference.<\/p>\n<p>The set point is adjusted for the switch to alarm at the desired temperature difference. Once the set point is reached, the relay will change state.<\/p>\n<p><strong>Applications<\/strong><\/p>\n<ul>\n<li>Pump protection<\/li>\n<li>Cooling water\/Cooling air<\/li>\n<li>Chemical feed pumps<\/li>\n<li>Relief valve monitoring<\/li>\n<li>Lubrication systems<\/li>\n<li>Exhaust flow monitoring<\/li>\n<li>Seal leakage<\/li>\n<li>Safety showers\/Eyewash stations<\/li>\n<li>Leak detection<\/li>\n<li>Vacuum pumps seal fluid<\/li>\n<li>Paint flow<\/li>\n<li>Sampling systems<\/li>\n<li>Analyzer flow<\/li>\n<\/ul>\n<p><strong>Features<\/strong><\/p>\n<ul>\n<li>Temperature compensated to provide repeatable alarm under varying process temperatures<\/li>\n<li>Continuous diagnostics detect sensor fault<\/li>\n<li>Non-linear <span class=\"mA\">mA<\/span> output signal can be used for trending, diagnostics and repeatable flow\/level indication<\/li>\n<li>Detects minimum flow or presence \/ absence of flow<\/li>\n<li>Easy \/ fast calibration<\/li>\n<li>Excellent low flow sensitivity<\/li>\n<\/ul>\n<p>Options<\/p>\n<ul>\n<li>Hot tap retractable probe<\/li>\n<li>Hygienic design<\/li>\n<li>NACE construction<\/li>\n<li>Window to view alarm status<\/li>\n<li>Integral or remote electronics<\/li>\n<li>Flow body for very low flow detection<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<h2>Thermatel\u00ae Td1 And Td2 Flow\/level\/interface Switches<\/h2>\n<p>Thermatel TD1\/TD2 switches can easily be adjusted to detect flow (gases and liquids), level or liquid-liquid interface. TD1 is a line powered 24 V DC unit with integral electronics and a built-in DPDT relay. TD2 is either V DC or V AC line powered, has integral or remote electronics and offers additional LED indication, time delay and mA output for diagnostics and trending.<\/p>\n<p>With continuous diagnostics, automatic temperature compensation, narrow hysteresis and fast response time, TD1\/TD2 bring you the latest in thermal dispersion technology.<\/p>\n<p><strong>Operating Principle<\/strong><\/p>\n<p>The THERMATEL sensor consists of two RTD elements. One is the reference and the second is heated to a temperature above the process temperature. The electronics detect the temperature difference between the two elements. The temperature difference is greatest in air, then decreases when cooling occurs due to a change in media. An increase in the flow rate further decreases the temperature difference.<\/p>\n<p>The set point is adjusted for the switch to alarm at the desired temperature difference. Once the set point is reached, the relay will change state.<\/p>\n<p><strong>Applications<\/strong><\/p>\n<ul>\n<li>Pump protection<\/li>\n<li>Cooling water\/Cooling air<\/li>\n<li>Chemical feed pumps<\/li>\n<li>Relief valve monitoring<\/li>\n<li>Lubrication systems<\/li>\n<li>Exhaust flow monitoring<\/li>\n<li>Seal leakage<\/li>\n<li>Safety showers\/Eyewash stations<\/li>\n<li>Leak detection<\/li>\n<li>Vacuum pumps seal fluid<\/li>\n<li>Paint flow<\/li>\n<li>Sampling systems<\/li>\n<li>Analyzer flow<\/li>\n<\/ul>\n<p><strong>Features<\/strong><\/p>\n<ul>\n<li>Temperature compensated to provide repeatable alarm under varying process temperatures<\/li>\n<li>Continuous diagnostics detect sensor fault<\/li>\n<li>Non-linear <span class=\"mA\">mA<\/span> output signal can be used for trending, diagnostics and repeatable flow\/level indication<\/li>\n<li>Detects minimum flow or presence \/ absence of flow<\/li>\n<li>Easy \/ fast calibration<\/li>\n<li>Excellent low flow sensitivity<\/li>\n<\/ul>\n<p>Options<\/p>\n<ul>\n<li>Hot tap retractable probe<\/li>\n<li>Hygienic design<\/li>\n<li>NACE construction<\/li>\n<li>Window to view alarm status<\/li>\n<li>Integral or remote electronics<\/li>\n<li>Flow body for very low flow detection<\/li>\n<\/ul>\n","protected":false},"featured_media":43800,"template":"","meta":[],"product_brand":[],"product_cat":[68,6593],"product_tag":[],"class_list":{"0":"post-45454","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-process-control-instrumentation","7":"product_cat-thermal-dispersion-level-switches","9":"first","10":"instock","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/product\/45454","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/media\/43800"}],"wp:attachment":[{"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/media?parent=45454"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/product_brand?post=45454"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/product_cat?post=45454"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.processindustryinformer.com\/product-finder\/wp-json\/wp\/v2\/product_tag?post=45454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}