{"id":50028,"date":"2026-04-11T15:34:31","date_gmt":"2026-04-11T15:34:31","guid":{"rendered":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/"},"modified":"2026-04-11T15:34:31","modified_gmt":"2026-04-11T15:34:31","slug":"bis-oiml-standards-fuel-flow-meters-india","status":"publish","type":"post","link":"https:\/\/chintanengineers.in\/it\/bis-oiml-standards-fuel-flow-meters-india\/","title":{"rendered":"Norme BIS e OIML per i misuratori di portata del carburante in India"},"content":{"rendered":"<div class=\"gfm-markdown\"><p>A 0.5% calibration drift on a 10,000-liter-per-day diesel throughput costs your operation Rs 1.35 lakh per month in untracked fuel. Over a year, you are bleeding over Rs 16.2 lakh. I have walked into hundreds of industrial estates\u2014from Dahej to GIDC Ahmedabad\u2014where procurement managers bought commercial-grade, uncertified flow meters to save Rs 40,000 upfront. They were completely blind to the millions evaporating from their balance sheets due to measurement slip.<\/p>\n\n<p>I am Vikram Desai, Senior Flow Measurement Engineer at Chintan Engineers. Over the last 22 years, I have designed, installed, and calibrated more than 5,000 flow measurement systems. If you are handling fuel for custody transfer, bulk loading gantries, or high-volume batching, installing a random off-the-shelf meter isn&#039;t just bad engineering\u2014it is a direct violation of the Legal Metrology Act.<\/p>\n\n<p>Procuring a fuel flow meter with proper legal metrology compliance depends heavily on navigating both BIS (Bureau of Indian Standards) and OIML (International Organization of Legal Metrology) frameworks. Here is how to cut through the regulatory noise, map the right accuracy class to your application, and protect your bottom line.<\/p>\n\n\n\n<h2>The Legal Landscape: Weights &amp; Measures and OIML R117 in India<\/h2>\n\n<p>First, we need to establish a baseline. When liquid changes hands for money, it is legally defined as &quot;custody transfer.&quot; In India, any dynamic measuring system used for the custody transfer of liquids other than water must comply with the Legal Metrology (General) Rules, which are heavily aligned with the international OIML R117 standard.<\/p>\n\n<p>OIML R117 dictates the metrological requirements for the meter, the gas elimination device (air eliminator), the filter, and the electronic calculator. It&#039;s not enough to simply buy a compliant meter; the entire <em>measuring system<\/em> must be approved. <\/p>\n\n<p>When your facility requires a Weights and Measures approved flow meter, Indian law strictly mandates that the device undergo pattern approval. This guarantees that the meter&#039;s internal geometry will hold its calibration despite severe temperature fluctuations, flow rate variations, and changes in the fuel&#039;s specific gravity.<\/p>\n\n<h3>Industrial Flow Meter Accuracy Classes<\/h3>\n\n<p>OIML R117 categorizes industrial flow meter accuracy classes based on the specific application. For procurement purposes, you only need to care about two:<\/p>\n\n<ul>\n<li><strong>Class 0.5 (\u00b10.5% Accuracy):<\/strong> The standard for internal allocation, depot fueling, and basic process monitoring. If you are just transferring diesel from a main storage tank to a <a href=\"https:\/\/chintanengineers.in\/mobile-fuel-dispenser-for-cement-and-rmc\/\">Mobile Fuel Dispenser for Cement and RMC Plants<\/a>, a Class 0.5 meter is legally and economically sufficient.<\/li>\n<li><strong>Class 0.3 \/ Class 0.2 (\u00b10.2% Accuracy):<\/strong> Mandatory for custody transfer, bulk fuel offloading, and point-of-sale dispensers. If you are printing tickets to bill a subcontractor or receiving fuel from an OMC (Oil Marketing Company) tanker, you must operate in this class.<\/li>\n<\/ul>\n\n<p><em>(A quick reality check: I&#039;ve ripped out enough commercial turbine meters from bulk diesel lines to know they don&#039;t belong anywhere near custody transfer applications. The rotor slip at fluctuating flow rates ruins your K-factor almost immediately. For high-accuracy commercial transfer, you rely on Positive Displacement. Period.)<\/em><\/p>\n\n\n<p><img src=\"https:\/\/chintanengineers.in\/wp-content\/smush-webp\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg.webp\" alt=\"High accuracy positive displacement fuel flow meter in a refinery setting\" loading=\"lazy\" decoding=\"async\" \/><\/p>\n\n\n<h2>BIS Standards: IS 14883 and Field Realities<\/h2>\n\n<p>While OIML provides the international baseline, BIS enforces the reality of the Indian industrial environment. A BIS certified fuel flow meter will conform to IS 14883 (for positive displacement meters) or related standards like IS 5765.<\/p>\n\n<p>I always tell plant managers: an imported meter might test perfectly in a controlled 20\u00b0C European laboratory, but it will fail miserably in the 45\u00b0C heat, 90% monsoon humidity, and severe voltage fluctuations of a typical Indian industrial site. <\/p>\n\n<p>When we build systems at Chintan Engineers, we engineer them for these exact realities. We utilize battery-backed electronics (like in our CE-111 Digital Flow Meter) to survive inevitable grid drops, and we specify robust internal materials\u2014Viton and Buna seals within thick aluminium or stainless steel bodies\u2014that actually resist the aggressive nature of blended Indian fuels.<\/p>\n\n<h2>Meter Technology Comparison: Matching Compliance to Application<\/h2>\n\n<p>Good procurement is about matching specs to ground reality. Don&#039;t over-specify, and never under-specify. Here is how our core models map to OIML R117 flow meter standards and field applications, based on actual product data.<\/p>\n\n<table>\n<tr><td>Model<\/td><td>Flow Range &amp; Pressure<\/td><td>Accuracy Class<\/td><td>Mechanism<\/td><td>Ideal Application &amp; Compliance<\/td><\/tr>\n<tr><td>:&#8212;<\/td><td>:&#8212;<\/td><td>:&#8212;<\/td><td>:&#8212;<\/td><td>:&#8212;<\/td><\/tr>\n<tr><td><strong>CE-113 High Accuracy Meter<\/strong><\/td><td>25 \u2013 1300 L\/min, up to 10 BAR<\/td><td>\u00b10.2%<\/td><td>High-Accuracy PD (Aluminium\/Viton)<\/td><td>Custody-transfer. Ticket printing stations and bulk gantries. Supports Legal Metrology sealing.<\/td><\/tr>\n<tr><td><strong>CE-212 Piston PD<\/strong><\/td><td>5 \u2013 60 L\/min<\/td><td>\u00b10.2%<\/td><td>4-Piston Micro-PD<\/td><td>Fuel dispensers and preset batching systems requiring Weights &amp; Measures approval.<\/td><\/tr>\n<tr><td><strong>CE-118 Oil Flow Meter<\/strong><\/td><td>20 \u2013 120 L\/min, up to 3.4 MPA<\/td><td>\u00b10.5%<\/td><td>Positive Displacement<\/td><td>Internal depot fueling. Rugged mechanical counter. Independent of fluid viscosity.<\/td><\/tr>\n<tr><td><strong>CE-210 Turbine Sensor<\/strong><\/td><td>5 \u2013 10,000 L\/h<\/td><td>\u00b10.5% \/ \u00b11.0%<\/td><td>Turbine \/ Helical<\/td><td>PLC-connected flow monitoring, low-viscosity fuels (diesel\/kerosene). Not for custody transfer.<\/td><\/tr>\n<\/table>\n\n<p>If you require OIML R117 compliant custody transfer, the <strong>CE-113<\/strong> is our undisputed workhorse. It features a calibrator mechanically adjustable to 0.2%, handles continuous temperatures up to 80\u00b0C, and integrates seamlessly with preset controllers and ticket printers. <\/p>\n\n\n<p><img src=\"https:\/\/chintanengineers.in\/wp-content\/smush-webp\/2026\/04\/technical-schematic-of-an-oiml-compliant-custody-transfer-me-scaled.jpg.webp\" alt=\"Technical schematic of an OIML compliant custody transfer measurement skid\" loading=\"lazy\" decoding=\"async\" \/><\/p>\n\n\n<h2>TCO Calculation: The True Cost of Non-Compliant Measurement<\/h2>\n\n<p>Let&#039;s break down the actual Total Cost of Ownership (TCO) comparing a generic commercial meter to a high-accuracy, legally compliant PD meter like the CE-113 over a 3-year period. Assume a facility dispensing 5,000 liters of diesel daily.<\/p>\n\n<p><strong>Generic Turbine Meter (\u00b11.5% accuracy drift over time):<\/strong><\/p>\n<ul>\n<li>Capital Expenditure: Rs 25,000<\/li>\n<li>Annual Fuel Loss (1.5% of 1,825,000 L\/year at Rs 90\/L): Rs 24,63,750<\/li>\n<li>Maintenance\/Frequent Recalibration: Rs 15,000\/year<\/li>\n<li><strong>3-Year TCO: ~Rs 74,41,250 (Driven entirely by unseen fuel loss)<\/strong><\/li>\n<\/ul>\n\n<p><strong>CE-113 High Accuracy PD Meter (Maintained at \u00b10.2% accuracy):<\/strong><\/p>\n<ul>\n<li>Capital Expenditure: Rs 1,15,000 (inclusive of air eliminator and strainer)<\/li>\n<li>Annual Fuel Loss (0.2% variance allowed by law): Rs 3,28,500<\/li>\n<li>Maintenance\/Prover Calibration: Rs 20,000\/year<\/li>\n<li><strong>3-Year TCO: ~Rs 11,60,500<\/strong><\/li>\n<\/ul>\n\n<p>The math speaks for itself. Investing in proper metrology pays for itself within the first 14 days of operation.<\/p>\n\n<h2>Installation Rules for Legal Metrology Compliance<\/h2>\n\n<p>A certified meter installed improperly is a non-compliant meter. OIML R117 mandates that the <em>entire system<\/em> safeguards measurement integrity. <\/p>\n\n<ol>\n<li><strong>Air Elimination:<\/strong> If you pump fuel from an underground tank or an emptying tanker without an upstream air eliminator, the pump will introduce air into the line. A positive displacement meter will measure that air as liquid volume. You will end up paying diesel prices for measured air. Systems utilizing the CE-113 must integrate air eliminators.<\/li>\n<li><strong>Filtration (Strainers):<\/strong> Particulate matter will score the internal rotors of a PD meter or damage the blades of a turbine, causing immediate calibration drift. We strictly follow the protocols laid out in our <a href=\"https:\/\/chintanengineers.in\/diesel-flow-meter-installation-and\/\">Diesel Flow Meter Installation and Commissioning Guide<\/a>, which mandates upstream Y-strainers or basket filters.<\/li>\n<li><strong>Signal Integrity for Batching:<\/strong> If you are tying a pulse-ready meter (like the CE-111 Digital Flow Meter) into a PLC for batching, you must account for valve closure times. Failure to tune the PLC lead-time against the pulse output will result in continuous over-delivery. I&#039;ve detailed how to correct this in my guide on <a href=\"https:\/\/chintanengineers.in\/troubleshooting-liquid-batching-system-overshoot-drift\/\">fixing liquid batching overshoot and accuracy drift<\/a>.<\/li>\n<li><strong>Sealing:<\/strong> Once we prove the meter against a master prover can and adjust the calibration wheel to \u00b10.2%, Legal Metrology inspectors will apply a physical seal to the calibrator and the mechanical register. Tampering with this seal voids custody transfer legality.<\/li>\n<\/ol>\n\n\n<p><img src=\"https:\/\/chintanengineers.in\/wp-content\/smush-webp\/2026\/04\/engineer-inspecting-a-legal-metrology-calibration-seal-on-an-scaled.jpg.webp\" alt=\"Engineer inspecting a Legal Metrology calibration seal on an industrial flow meter\" loading=\"lazy\" decoding=\"async\" \/><\/p>\n\n\n<h2>Frequently Asked Questions<\/h2>\n\n<p><strong>Does OIML R117 compliance apply to internal fuel transfers?<\/strong><\/p>\n<p>No. Legal metrology strictly governs transactions where money changes hands based on the measured volume (custody transfer). For internal allocations (e.g., from your main tank to your generators), a Class 0.5 meter like the CE-118 is perfectly acceptable and highly economical.<\/p>\n\n<p><strong>Can a turbine meter achieve \u00b10.2% accuracy for Legal Metrology approval?<\/strong><\/p>\n<p>In highly controlled, steady-flow conditions with low-viscosity fluids, a premium turbine meter can achieve high accuracy. However, in industrial diesel applications with varying flow rates, start\/stop batching, and viscosity changes, PD meters (like our CE-113 or CE-212) are the only reliable way to maintain \u00b10.2% custody transfer accuracy without constant recalibration.<\/p>\n\n<p><strong>What components are required alongside the meter for a certified skid?<\/strong><\/p>\n<p>To meet legal metrology compliance, a custody transfer skid requires the flow meter, an upstream strainer (filter), an air eliminator (gas separation device), a non-return valve, and a ticket-printing mechanical register or approved electronic preset controller.<\/p>\n\n<p><strong>How often does a custody transfer fuel meter need calibration in India?<\/strong><\/p>\n<p>Under the Legal Metrology Act, measuring instruments used in commercial transactions typically require annual re-verification and stamping by the local Weights and Measures department. We recommend internal prover checks every 3 to 6 months depending on throughput volume.<\/p>\n\n<p><strong>Can I upgrade a mechanical flow meter to pulse output for SCADA integration?<\/strong><\/p>\n<p>Yes. Many of our positive displacement meters, including the CE-113 custody transfer build, can be equipped with pulser combinations that send digital signals to PLCs, ERP systems, or remote GSM\/LoRa monitoring kits without removing the primary mechanical registry.<\/p>\n\n\n<p><img src=\"https:\/\/chintanengineers.in\/wp-content\/smush-webp\/2026\/04\/oiml-r117-flow-meter-accuracy-classes-comparison-chart-scaled.jpg.webp\" alt=\"OIML R117 flow meter accuracy classes comparison chart\" loading=\"lazy\" decoding=\"async\" \/><\/p>\n\n\n<h2>Engineer&#039;s Verdict<\/h2>\n\n<p>Measurement is not just an instrumentation detail; it is a critical financial safeguard. Buying uncertified, generic meters for bulk fuel transfer is a procurement failure that directly drains operating margins.<\/p>\n\n<p>Based on 22 years of field data tracking fuel accountability across Indian industries, here is my direct recommendation:<\/p>\n\n<p>If you are transferring diesel internally, specify the <strong>CE-118 Oil Flow Meter<\/strong> or <strong>CE-110 Mechanical Flow Meter<\/strong>. They provide rugged, viscosity-independent \u00b10.5% accuracy with minimal line pressure drop.<\/p>\n\n<p>If you are billing subcontractors, filling commercial fleets, or operating bulk loading gantries, you have no choice but to comply with the Legal Metrology Act. Specify the <strong>CE-113 High Accuracy Transfer Meter<\/strong>. With its \u00b10.2% custody-transfer accuracy, 10 BAR pressure rating, and integrated air eliminator capabilities, it guarantees bulletproof, legally compliant accountability.<\/p>\n\n<p>Stop paying for measurement slip. Standardize your fuel tracking today.<\/p>\n\n\n\n\n\n<\/div>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does OIML R117 compliance apply to internal fuel transfers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Legal metrology strictly governs transactions where money changes hands based on the measured volume (custody transfer). For internal allocations (e.g., from your main tank to your generators), a Class 0.5 meter like the CE-118 is perfectly acceptable and highly economical.\"}},{\"@type\":\"Question\",\"name\":\"Can a turbine meter achieve \u00b10.2% accuracy for Legal Metrology approval?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"In highly controlled, steady-flow conditions with low-viscosity fluids, a premium turbine meter can achieve high accuracy. However, in industrial diesel applications with varying flow rates, start\/stop batching, and viscosity changes, PD meters (like our CE-113 or CE-212) are the only reliable way to maintain \u00b10.2% custody transfer accuracy without constant recalibration.\"}},{\"@type\":\"Question\",\"name\":\"What components are required alongside the meter for a certified skid?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"To meet legal metrology compliance, a custody transfer skid requires the flow meter, an upstream strainer (filter), an air eliminator (gas separation device), a non-return valve, and a ticket-printing mechanical register or approved electronic preset controller.\"}},{\"@type\":\"Question\",\"name\":\"How often does a custody transfer fuel meter need calibration in India?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Under the Legal Metrology Act, measuring instruments used in commercial transactions typically require annual re-verification and stamping by the local Weights and Measures department. We recommend internal prover checks every 3 to 6 months depending on throughput volume.\"}},{\"@type\":\"Question\",\"name\":\"Can I upgrade a mechanical flow meter to pulse output for SCADA integration?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Many of our positive displacement meters, including the CE-113 custody transfer build, can be equipped with pulser combinations that send digital signals to PLCs, ERP systems, or remote GSM\/LoRa monitoring kits without removing the primary mechanical registry.\"}}]}<\/script>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":50024,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"BIS certified fuel flow meter","_yoast_wpseo_title":"BIS & OIML Standards for Fuel Flow Meters in India","_yoast_wpseo_metadesc":"An engineer's guide to BIS certified fuel flow meters, OIML R117 standards, and Legal Metrology compliance for custody transfer in India. Specs inside.","_yoast_wpseo_canonical":"","_eb_attr":"","_n8n_st_send_on_update":false,"_yoast_wpseo_keywordsynonyms":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-50028","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BIS &amp; OIML Standards for Fuel Flow Meters in India<\/title>\n<meta name=\"description\" content=\"An engineer&#039;s guide to BIS certified fuel flow meters, OIML R117 standards, and Legal Metrology compliance for custody transfer in India. Specs inside.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chintanengineers.in\/it\/bis-oiml-standards-fuel-flow-meters-india\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BIS &amp; OIML Standards for Fuel Flow Meters in India\" \/>\n<meta property=\"og:description\" content=\"An engineer&#039;s guide to BIS certified fuel flow meters, OIML R117 standards, and Legal Metrology compliance for custody transfer in India. Specs inside.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/chintanengineers.in\/it\/bis-oiml-standards-fuel-flow-meters-india\/\" \/>\n<meta property=\"og:site_name\" content=\"Chintan Engineers\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-11T15:34:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"573\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Chintan Engineers Staff\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Chintan Engineers Staff\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/\"},\"author\":{\"name\":\"Chintan Engineers Staff\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#\\\/schema\\\/person\\\/4588f04835a992d9f7724b976b4ab59f\"},\"headline\":\"BIS &#038; OIML Standards for Fuel Flow Meters in India\",\"datePublished\":\"2026-04-11T15:34:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/\"},\"wordCount\":9,\"publisher\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"it-IT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/\",\"name\":\"BIS & OIML Standards for Fuel Flow Meters in India\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg\",\"datePublished\":\"2026-04-11T15:34:31+00:00\",\"description\":\"An engineer's guide to BIS certified fuel flow meters, OIML R117 standards, and Legal Metrology compliance for custody transfer in India. Specs inside.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#breadcrumb\"},\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#primaryimage\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg\",\"width\":1024,\"height\":573},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/bis-oiml-standards-fuel-flow-meters-india\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/chintanengineers.in\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"BIS &#038; OIML Standards for Fuel Flow Meters in India\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#website\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/\",\"name\":\"Chintan Engineers\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/chintanengineers.in\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"it-IT\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#organization\",\"name\":\"Chintan Engineers\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-Achievers-Chintan-Engineers-Combined-Logo-2-e1760938887596.png\",\"contentUrl\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/cropped-Achievers-Chintan-Engineers-Combined-Logo-2-e1760938887596.png\",\"width\":337,\"height\":200,\"caption\":\"Chintan Engineers\"},\"image\":{\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/#\\\/schema\\\/person\\\/4588f04835a992d9f7724b976b4ab59f\",\"name\":\"Chintan Engineers Staff\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/wphb-cache\\\/gravatar\\\/bd9\\\/bd97a6feb2eff6182e08401c413f8db7x96.jpg\",\"url\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/wphb-cache\\\/gravatar\\\/bd9\\\/bd97a6feb2eff6182e08401c413f8db7x96.jpg\",\"contentUrl\":\"https:\\\/\\\/chintanengineers.in\\\/wp-content\\\/wphb-cache\\\/gravatar\\\/bd9\\\/bd97a6feb2eff6182e08401c413f8db7x96.jpg\",\"caption\":\"Chintan Engineers Staff\"},\"url\":\"https:\\\/\\\/chintanengineers.in\\\/it\\\/author\\\/chintan2181997\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Norme BIS e OIML per i misuratori di portata del carburante in India","description":"Una guida per ingegneri sui misuratori di portata del carburante certificati BIS, sugli standard OIML R117 e sulla conformit\u00e0 alla metrologia legale per il trasferimento di custodia in India. Specifiche all&#039;interno.","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:\/\/chintanengineers.in\/it\/bis-oiml-standards-fuel-flow-meters-india\/","og_locale":"it_IT","og_type":"article","og_title":"BIS & OIML Standards for Fuel Flow Meters in India","og_description":"An engineer's guide to BIS certified fuel flow meters, OIML R117 standards, and Legal Metrology compliance for custody transfer in India. Specs inside.","og_url":"https:\/\/chintanengineers.in\/it\/bis-oiml-standards-fuel-flow-meters-india\/","og_site_name":"Chintan Engineers","article_published_time":"2026-04-11T15:34:31+00:00","og_image":[{"width":1024,"height":573,"url":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg","type":"image\/jpeg"}],"author":"Chintan Engineers Staff","twitter_card":"summary_large_image","twitter_misc":{"Scritto da":"Chintan Engineers Staff"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#article","isPartOf":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/"},"author":{"name":"Chintan Engineers Staff","@id":"https:\/\/chintanengineers.in\/#\/schema\/person\/4588f04835a992d9f7724b976b4ab59f"},"headline":"BIS &#038; OIML Standards for Fuel Flow Meters in India","datePublished":"2026-04-11T15:34:31+00:00","mainEntityOfPage":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/"},"wordCount":9,"publisher":{"@id":"https:\/\/chintanengineers.in\/#organization"},"image":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#primaryimage"},"thumbnailUrl":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg","articleSection":["Blog"],"inLanguage":"it-IT"},{"@type":"WebPage","@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/","url":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/","name":"Norme BIS e OIML per i misuratori di portata del carburante in India","isPartOf":{"@id":"https:\/\/chintanengineers.in\/#website"},"primaryImageOfPage":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#primaryimage"},"image":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#primaryimage"},"thumbnailUrl":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg","datePublished":"2026-04-11T15:34:31+00:00","description":"Una guida per ingegneri sui misuratori di portata del carburante certificati BIS, sugli standard OIML R117 e sulla conformit\u00e0 alla metrologia legale per il trasferimento di custodia in India. Specifiche all&#039;interno.","breadcrumb":{"@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#breadcrumb"},"inLanguage":"it-IT","potentialAction":[{"@type":"ReadAction","target":["https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/"]}]},{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#primaryimage","url":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg","contentUrl":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2026\/04\/high-accuracy-positive-displacement-fuel-flow-meter-in-a-ref-scaled.jpg","width":1024,"height":573},{"@type":"BreadcrumbList","@id":"https:\/\/chintanengineers.in\/bis-oiml-standards-fuel-flow-meters-india\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/chintanengineers.in\/"},{"@type":"ListItem","position":2,"name":"BIS &#038; OIML Standards for Fuel Flow Meters in India"}]},{"@type":"WebSite","@id":"https:\/\/chintanengineers.in\/#website","url":"https:\/\/chintanengineers.in\/","name":"Ingegneri Chintan","description":"","publisher":{"@id":"https:\/\/chintanengineers.in\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/chintanengineers.in\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"it-IT"},{"@type":"Organization","@id":"https:\/\/chintanengineers.in\/#organization","name":"Ingegneri Chintan","url":"https:\/\/chintanengineers.in\/","logo":{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/chintanengineers.in\/#\/schema\/logo\/image\/","url":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2025\/10\/cropped-Achievers-Chintan-Engineers-Combined-Logo-2-e1760938887596.png","contentUrl":"https:\/\/chintanengineers.in\/wp-content\/uploads\/2025\/10\/cropped-Achievers-Chintan-Engineers-Combined-Logo-2-e1760938887596.png","width":337,"height":200,"caption":"Chintan Engineers"},"image":{"@id":"https:\/\/chintanengineers.in\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/chintanengineers.in\/#\/schema\/person\/4588f04835a992d9f7724b976b4ab59f","name":"Personale degli ingegneri di Chintan","image":{"@type":"ImageObject","inLanguage":"it-IT","@id":"https:\/\/chintanengineers.in\/wp-content\/wphb-cache\/gravatar\/bd9\/bd97a6feb2eff6182e08401c413f8db7x96.jpg","url":"https:\/\/chintanengineers.in\/wp-content\/wphb-cache\/gravatar\/bd9\/bd97a6feb2eff6182e08401c413f8db7x96.jpg","contentUrl":"https:\/\/chintanengineers.in\/wp-content\/wphb-cache\/gravatar\/bd9\/bd97a6feb2eff6182e08401c413f8db7x96.jpg","caption":"Chintan Engineers Staff"},"url":"https:\/\/chintanengineers.in\/it\/author\/chintan2181997\/"}]}},"_links":{"self":[{"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/posts\/50028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/comments?post=50028"}],"version-history":[{"count":0,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/posts\/50028\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/media\/50024"}],"wp:attachment":[{"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/media?parent=50028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/categories?post=50028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chintanengineers.in\/it\/wp-json\/wp\/v2\/tags?post=50028"}],"curies":[{"name":"parola chiave","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}