{"id":8931,"date":"2024-07-17T05:48:10","date_gmt":"2024-07-17T05:48:10","guid":{"rendered":"https:\/\/eko-instruments.com\/in\/product\/hf-01-2\/"},"modified":"2026-01-09T13:10:35","modified_gmt":"2026-01-09T13:10:35","slug":"hf-01s","status":"publish","type":"product","link":"https:\/\/eko-instruments.com\/in\/product\/hf-01s\/","title":{"rendered":"HF-01S Heat Flux Sensor"},"content":{"rendered":"<h2><\/h2>\n<p><iframe title=\"Promo Video \u2013 EKO HF 01S Standard Heatflux Sensor\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/klgXoGKnt30?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2>Standard Plate Type Heat Flux Sensor<\/h2>\n<p>&nbsp;<\/p>\n<p>The <strong>HF-01S Standard Plate Type Heat Flux Sensor<\/strong> has brought <a href=\"https:\/\/eko-instruments.com\/product-category\/heat-flux-sensors\/\">heat flux measurement<\/a> applications to a new level. With a century of history and over 50 years of heat flux sensor manufacturing experience, EKO presents the HF-01S. This sensor represents a leap in thermal measurement precision. The standard, sensitive, fast-response, all-around sensor allows you to measure heat flux as accurately and precisely as possible.<\/p>\n<p>Thanks to its small size and thin body, the disturbance of the sensor on the actual heat flow is minimized \u2014 bringing you one step closer to the true values of heat flux. In addition to its measurement-related benefits, the tiny, lightweight body allows easy installation without the risk of falling off. The limited surface area also minimizes the chance of air gaps between the sensor and the measurement surface. Manufactured carefully in Japan and passing the most critical quality tests, this sensor is built to last.<\/p>\n<h2>Features: Why Choose the HF-01S Heat Flux Sensor?<\/h2>\n<p>The HF-01S benefits from a unique combination of characteristics that are very hard to find together in one product: <strong>size<\/strong> and <strong>sensitivity<\/strong>. Sensitive sensors are often either large in area or thick in body \u2014 both of which are disadvantages in terms of accuracy and practicality. Small sensors, on the other hand, usually offer low sensitivity. Despite this inverse correlation, the HF-01S offers the best of both.<\/p>\n<p>It comes with a nominal sensitivity of <strong>55 \u00b5V\/Wm\u00b2<\/strong> in a compact body of <strong>2.4 \u00d7 2.5 \u00d7 0.2 cm\u00b3<\/strong>. Made according to the <a href=\"https:\/\/www.iso.org\/standard\/59697.html\">ISO 9869<\/a> standard with facings and a guard that is five times the thickness, it is the best choice for building physics applications. With a response time below <strong>2 seconds<\/strong>, you can capture quick changes in heat flow. It also features a wide temperature range of <strong>-30\u02daC to 100\u02daC<\/strong> and a heat flux range of <strong>10 kW\/m\u00b2<\/strong>.<\/p>\n<h2>Applications<\/h2>\n<p>The combination of minimal interference, high sensitivity, fast response, low thermal resistance, water resistance, and a wide measurement range makes this sensor suitable for various applications \u2014 from quick thermal conductivity testing and heat transfer coefficient estimation to surface heat flux monitoring and more.<\/p>\n<p>Check out four application examples in the <a href=\"https:\/\/eko-instruments.com\/in\/wp-content\/uploads\/sites\/13\/2025\/06\/HF-01S-Application-Brochures.pdf\"><strong>Application Sheet<\/strong><\/a> in the download section.<\/p>\n<h2>Installation<\/h2>\n<p>Installation is easy and straightforward but crucial for accurate measurements. Poor installation can lead to data that does not represent actual conditions. We recommend following ISO 9869 installation practices: use thermal contact material and mask your sensor so it appears as part of the object being measured.<\/p>\n<p>Read the <a href=\"https:\/\/eko-instruments.com\/jp\/wp-content\/uploads\/sites\/13\/2024\/07\/02-qsg-hf01s-24-01e_v070_j_v040_po.pdf\"><strong>Quick Start Guide<\/strong><\/a>, <a href=\"https:\/\/eko-instruments.com\/jp\/wp-content\/uploads\/sites\/13\/2024\/07\/03-instructions-manual-v1.pdf\"><strong>Instruction Manual<\/strong><\/a>, and watch our <a href=\"https:\/\/www.youtube.com\/watch?v=LVZ5F6f0MPM\">installation video<\/a> to learn how your sensor should look once installed.<\/p>\n<h2>Calibration<\/h2>\n<p>At EKO, all heat flux sensors are calibrated carefully according to the <a href=\"https:\/\/store.astm.org\/c1130-21.html\"><strong>ASTM C1130 Standard<\/strong>. <\/a>We use a Heat Flow Meter Apparatus in compliance with ASTM C518 and ISO 8301. Check your sensor\u2019s calibration certificate for detailed calibration conditions.<\/p>\n<h2>Enhance Your HF-01S<\/h2>\n<p>Upgrade your HF-01S with our <a href=\"https:\/\/eko-instruments.com\/product\/heat-flux-sensor-extension-kit\/\"><strong>Cable Extension Packages<\/strong><\/a> and <a href=\"https:\/\/eko-instruments.com\/product\/li-19-datalogger\/\"><strong>Handheld Datalogger<\/strong><\/a>. For seamless monitoring, explore our <a href=\"https:\/\/eko-instruments.com\/product\/qht-10\/\"><strong>Thermal Monitoring Kits QHT-10<\/strong><\/a> and <a href=\"https:\/\/eko-instruments.com\/product\/qru-100\/\"><strong>QRU-100<\/strong><\/a> \u2014 equipped with the HF-01S and the highest accuracy temperature sensors.<\/p>\n<p><a href=\"https:\/\/eko-instruments.com\/contact-us\/\">Visit our contact page<\/a> for assistance.<\/p>\n<p><strong>Ready to enhance your monitoring?<\/strong> Request a quote today.<\/p>\n<p><iframe title=\"How to install your EKO HF-01S Sensor\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/LVZ5F6f0MPM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Small size standard plate type heat flux sensor | ASTM C1046 | ISO 9869 | Built-in thermal guard<\/p>\n","protected":false},"featured_media":7646,"comment_status":"open","ping_status":"closed","template":"","meta":{"content-type":""},"product_cat":[224],"product_tag":[],"class_list":{"0":"post-8931","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-heat-flux-sensors","7":"product_parameters-thermal-flux","8":"product_parameters-thermal-conductivity","9":"product_type_cat-instruments","10":"product_application_cat-thermal-flux","12":"first","13":"instock","14":"shipping-taxable","15":"purchasable","16":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HF-01S \u2013 Best Heat Flux Sensor for Industrial Applications | EKO<\/title>\n<meta name=\"description\" content=\"Innovative sensor for measuring heat transfer in simple thermal systems. 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