{"id":223,"date":"2013-01-06T11:19:56","date_gmt":"2013-01-06T11:19:56","guid":{"rendered":"http:\/\/flatsome.dev\/?post_type=product&#038;p=8277"},"modified":"2023-04-30T10:11:34","modified_gmt":"2023-04-30T10:11:34","slug":"don-positive-displacement-flow-meters","status":"publish","type":"product","link":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/","title":{"rendered":"DON &#8211; Positive-Displacement Flow Meters"},"content":{"rendered":"<h3>DON Flow Meters for Viscous Liquids<\/h3>\n<p>KOBOLD&#8217;s DON Oval Gear Positive Displacement Flow Meters are the ideal solution for measuring clean high and low viscosity liquids such as lubricating\/hydraulic oils, petroleum, ink, diesel fuels, grease, chemicals, solvents, resins, pastes, and molasses. Due to the mechanical nature of the operating principle, media with particulate matter is not recommended for use with the DON.<\/p>\n<h3>Reliable Oval Gear Positive Displacement Flow Technology<\/h3>\n<p>The heavy-duty industrial oval gear design design employs two precision-machined gears that are turned by the force of the flowing media and they allow a very specific known volume of liquid to pass through the meter with each rotation. These gears enable the DON to precisely measure liquid flow over a very wide viscosity range and provide a high accuracy volumetric flow rate measurement. Visit our article about\u00a0<a href=\"https:\/\/koboldusa.com\/articles\/flow-meters\/positive-displacement-flow-meters\/\">Positive Displacement Flow Meters<\/a>\u00a0to learn all about the technology type and its advantages and limitations.\/p&gt;<\/p>\n<h3>Ideal for Intermittent and Fluctuating Flow Rates<\/h3>\n<p>Because the measurement principle provides a true volumetric flow measurement, the DON is also ideal for flow rates that fluctuate widely and for flow that is intermittent. High accuracy measurement is assured even though these are process variables that would render other flow meter technology types non-compatible.<\/p>\n<h3>Higher Pressure Oval Gear Positive Displacement Flow Meters<\/h3>\n<p>To accomodate even higher process pressure than our standard DON Oval Gear Flow Meter, KOBOLD also makes the\u00a0<a href=\"https:\/\/koboldusa.com\/products\/flow\/positive-displacement-flow-meters-switches\/don-h-oval-gear-flow-meter-high-pressures\/\">DON-H High Pressure Oval Gear Flow Meter<\/a>. It offers the exact same rugged and reliable service for high viscosity liquid measurement.<\/p>\n<h3>Other Positive Displacement Flow Meters and Gear Meters from KOBOLD<\/h3>\n<p>KOBOLD offers a\u00a0<a href=\"https:\/\/koboldusa.com\/products\/flow\/positive-displacement-flow-meters-switches\/\">comprehensive line of Positive Displacement Flow Meters<\/a>\u00a0including other Oval Gear Flow Meters, Rotary Piston Flow Meters, and Helical Screw Gear Flow Meters.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"asset download-datasheet\"><a href=\"https:\/\/koboldusa.com\/media\/flow\/DON\/datasheet-oval-wheel-flow-meter-positive-displacement-don.pdf\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" title=\"DON - Positive-Displacement Flow Meters Datasheet\" src=\"https:\/\/koboldusa.com\/media\/flow\/DON\/datasheet-thumbnail-don.jpg\" alt=\"DON - Positive-Displacement Flow Meters Datasheet\" \/><\/a><a href=\"https:\/\/koboldusa.com\/media\/flow\/DON\/datasheet-oval-wheel-flow-meter-positive-displacement-don.pdf\" target=\"_blank\" rel=\"noopener\">Download Datasheet<\/a><\/div>\n<div class=\"asset download-manual\"><a href=\"https:\/\/koboldusa.com\/media\/flow\/DON\/manual-oval-wheel-flow-meter-positive-displacement-don.pdf?a=5259\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" title=\"DON - Positive-Displacement Flow Meters Manual\" src=\"https:\/\/koboldusa.com\/media\/flow\/DON\/manual-thumbnail-don.jpg\" alt=\"DON - Positive-Displacement Flow Meters Manual\" \/><\/a><a href=\"https:\/\/koboldusa.com\/media\/flow\/DON\/manual-oval-wheel-flow-meter-positive-displacement-don.pdf?a=5259\" target=\"_blank\" rel=\"noopener\">Download Manual<\/a><\/div>\n<div><\/div>\n<div>\n<h2>Product Features<\/h2>\n<div class=\"row\">\n<div class=\"col\">Aluminum or Stainless Steel Bodies<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Can Measure Viscosities to 1,000,000 cPs (w\/Special Cut Gears)<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Operating Pressures to 1,450 PSIG (Model Dependent)<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Electronic Output Options Include Analog and Frequency Outputs, LCD Totalizers and Batch Controllers<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Mechanical Totalizer (\u00bd&#8221;&#8230;4&#8243; Meters Only)<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Bi-directional Flow Sensing with Optional Quadrature Output<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Certifications\/Approvals: ATEX<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"col\">Top Seller<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<h4>Product Specifications<\/h4>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\">Flow Ranges<\/td>\n<td style=\"width: 50%;\">0.13&#8230;9.5 GPH to 40&#8230;660 GPM<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">Line Sizes<\/td>\n<td style=\"width: 50%;\">1\/8&#8243;&#8230;4&#8243;<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">Fittings<\/td>\n<td style=\"width: 50%;\">NPT or BSP Threaded, ANSI or DIN Flanged<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">Max. Operating Temperature<\/td>\n<td style=\"width: 50%;\">Up to 300 \u00b0F (Output Option Dependent)<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 50%;\">Media Category<\/td>\n<td style=\"width: 50%;\">Liquid<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":638,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[45,73],"product_tag":[],"class_list":["post-223","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-flow","product_cat-positive-displacement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.4 (Yoast SEO v20.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DON - Positive-Displacement Flow Meters - Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature<\/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:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DON - Positive-Displacement Flow Meters\" \/>\n<meta property=\"og:description\" content=\"Product Specifications    Flow Ranges 0.13...9.5 GPH to 40...660 GPM   Line Sizes 1\/8&quot;...4&quot;   Fittings NPT or BSP Threaded, ANSI or DIN Flanged   Max. Operating Temperature Up to 300 \u00b0F (Output Option Dependent)   Media Category Liquid\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/\" \/>\n<meta property=\"og:site_name\" content=\"Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature\" \/>\n<meta property=\"article:modified_time\" content=\"2023-04-30T10:11:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kobold.vn\/en\/wp-content\/uploads\/2013\/01\/oval-wheel-flow-meter-positive-displacement-don.gif\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/gif\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/\",\"url\":\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/\",\"name\":\"DON - Positive-Displacement Flow Meters - Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature\",\"isPartOf\":{\"@id\":\"https:\/\/kobold.vn\/en\/#website\"},\"datePublished\":\"2013-01-06T11:19:56+00:00\",\"dateModified\":\"2023-04-30T10:11:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/kobold.vn\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\/\/kobold.vn\/en\/products\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"DON &#8211; Positive-Displacement Flow Meters\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/kobold.vn\/en\/#website\",\"url\":\"https:\/\/kobold.vn\/en\/\",\"name\":\"Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature\",\"description\":\"KOBOLD VIETNAM\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/kobold.vn\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"DON - Positive-Displacement Flow Meters - Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature","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:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/","og_locale":"en_US","og_type":"article","og_title":"DON - Positive-Displacement Flow Meters","og_description":"Product Specifications    Flow Ranges 0.13...9.5 GPH to 40...660 GPM   Line Sizes 1\/8\"...4\"   Fittings NPT or BSP Threaded, ANSI or DIN Flanged   Max. Operating Temperature Up to 300 \u00b0F (Output Option Dependent)   Media Category Liquid","og_url":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/","og_site_name":"Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature","article_modified_time":"2023-04-30T10:11:34+00:00","og_image":[{"width":400,"height":400,"url":"https:\/\/kobold.vn\/en\/wp-content\/uploads\/2013\/01\/oval-wheel-flow-meter-positive-displacement-don.gif","type":"image\/gif"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/","url":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/","name":"DON - Positive-Displacement Flow Meters - Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature","isPartOf":{"@id":"https:\/\/kobold.vn\/en\/#website"},"datePublished":"2013-01-06T11:19:56+00:00","dateModified":"2023-04-30T10:11:34+00:00","breadcrumb":{"@id":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/kobold.vn\/en\/product\/don-positive-displacement-flow-meters\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/kobold.vn\/en\/"},{"@type":"ListItem","position":2,"name":"Products","item":"https:\/\/kobold.vn\/en\/products\/"},{"@type":"ListItem","position":3,"name":"DON &#8211; Positive-Displacement Flow Meters"}]},{"@type":"WebSite","@id":"https:\/\/kobold.vn\/en\/#website","url":"https:\/\/kobold.vn\/en\/","name":"Sensors &amp; Controls for Flow, Pressure, Level, &amp; Temperature","description":"KOBOLD VIETNAM","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/kobold.vn\/en\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/product\/223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/comments?post=223"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/media\/638"}],"wp:attachment":[{"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/media?parent=223"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/product_cat?post=223"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/kobold.vn\/en\/wp-json\/wp\/v2\/product_tag?post=223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}