{"id":12607,"date":"2026-06-09T14:38:52","date_gmt":"2026-06-09T12:38:52","guid":{"rendered":"https:\/\/www.plugandtrack.com\/?p=12607"},"modified":"2026-06-09T17:13:31","modified_gmt":"2026-06-09T15:13:31","slug":"how-can-i-quickly-check-the-accuracy-of-my-sensor","status":"publish","type":"post","link":"https:\/\/www.plugandtrack.com\/en\/how-can-i-quickly-check-the-accuracy-of-my-sensor\/","title":{"rendered":"How can I quickly check the accuracy of my sensor?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12607\" class=\"elementor elementor-12607 elementor-12481\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e179fc2 e-flex e-con-boxed e-con e-parent\" data-id=\"4e179fc2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-15af5beb elementor-widget elementor-widget-text-editor\" data-id=\"15af5beb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Two simple methods to test your data logger before putting it into service.<\/p>\n<p>This article complements our full guide published on support.plugandtrack.com: <a href=\"https:\/\/support.plugandtrack.com\/en\/thermotrack-webserve-en\/tech-notes\/comment-faire-un-etalonnage-en-temperature\/\" target=\"_blank\" rel=\"noopener\"><u>How to carry out a simplified calibration<\/u><\/a><\/p>\n<p>You&#8217;ve just received your Thermo Button or Plug and Track probe and want to make sure it&#8217;s reading correctly before putting it into service? This guide walks you through two straightforward methods for a quick check at goods receipt.<\/p>\n<div style=\"background: #fff5f5; border-left: 4px solid #e73331; border-radius: 0 6px 6px 0; padding: 16px 20px; margin: 20px 0;\">\n<p style=\"margin: 0 0 8px 0;\"><strong>Important \u2014 what this check is not<\/strong><\/p>\n<p style=\"margin: 0;\">The methods described here are <strong>practical, common-sense checks<\/strong>, useful for quickly testing your equipment if something seems off. They are not calibration in the metrological sense. Rigorous calibration \u2014 with traceability to national standards, uncertainty calculation using the 5M method, and an ISO 17025 certificate \u2014 can only be carried out by an accredited metrology laboratory. <a href=\"https:\/\/www.plugandtrack.com\/en\/services\/calibration\/\">Plug and Track offers this as an optional service \u2192<\/a><\/p>\n<\/div>\n<nav class=\"sommaire\" aria-label=\"Article contents\">\n<p class=\"sommaire-title\">Contents<\/p>\n<ol>\n<li><a href=\"#quand-verifier\">When and why check at goods receipt?<\/a><\/li>\n<li><a href=\"#methode-glace\">Method 1 \u2014 Ice bath (0 \u00b0C reference point)<\/a><\/li>\n<li><a href=\"#methode-incubateur\">Method 2 \u2014 Incubator (37 \u00b0C reference point)<\/a><\/li>\n<li><a href=\"#interpreter\">How to interpret the result<\/a><\/li>\n<li><a href=\"#limites\">Limitations of these methods<\/a><\/li>\n<\/ol>\n<\/nav>\n<p><\/p>\n<section id=\"quand-verifier\">\n<h2><span style=\"color: #62c5bc;\">1. When and why run a quick check?<\/span><\/h2>\n<p>You&#8217;ve just received your equipment and want to make sure it reads correctly before deploying it \u2014 or you&#8217;ve been using it for a while and something doesn&#8217;t quite add up. Either way, these two methods let you run a straightforward sanity check without any laboratory equipment.<\/p>\n<p>A quick check is useful when:<\/p>\n<ul>\n<li>you want to verify a new unit before putting it into service;<\/li>\n<li>a reading seems inconsistent with what you&#8217;d expect in your environment;<\/li>\n<li>you suspect the unit may have drifted over time and want a first indication before sending it for formal calibration.<\/li>\n<\/ul>\n<p>The methods below rely on two stable, reproducible temperature reference points accessible without lab equipment: melting ice (0 \u00b0C) and an incubator set to 37 \u00b0C.<\/p>\n<\/section>\n<p><\/p>\n<section id=\"methode-glace\">\n<h2><span style=\"color: #62c5bc;\">2. Method 1 \u2014 Ice bath (0 \u00b0C reference point)<\/span><\/h2>\n<p>Melting ice provides a naturally stable thermal reference at around 0 \u00b0C as long as ice remains in the mixture. It&#8217;s the simplest and most accessible method for a quick check.<\/p>\n<h3>What you&#8217;ll need<\/h3>\n<ul>\n<li>A deep bowl or container<\/li>\n<li>Crushed ice (or ice cubes)<\/li>\n<li>A small amount of cold water<\/li>\n<li>A refrigerator (to shield the bath from ambient heat)<\/li>\n<\/ul>\n<h3>Procedure<\/h3>\n<ol>\n<li>Fill the container with crushed ice and add a little water to create a uniform melting-ice mixture.<\/li>\n<li>Submerge your Thermo Button or probe in the mixture, <strong>without letting it touch the sides of the container<\/strong>.<\/li>\n<li>Place the container inside a refrigerator to prevent ambient heat from disturbing the bath.<\/li>\n<li>If you&#8217;re checking a Thermo Button, set the <strong>measurement interval to 1 minute<\/strong> and the <strong>resolution to 0.1 \u00b0C<\/strong> before starting.<\/li>\n<li>Wait for the readings to stabilise, then note the values displayed.<\/li>\n<\/ol>\n<div style=\"background: #f2f6ff; border-left: 4px solid #62c5bc; border-radius: 0 6px 6px 0; padding: 16px 20px; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>Expected result:<\/strong> your unit should display a value close to 0 \u00b0C, within its guaranteed accuracy \u2014 \u00b10.5 \u00b0C for the Thermo Button 22L and digital probes, \u00b11 \u00b0C for the Thermo Button 21G.<\/p>\n<\/div>\n<\/section>\n<p><\/p>\n<section id=\"methode-incubateur\">\n<h2><span style=\"color: #62c5bc;\">3. Method 2 \u2014 Incubator (37 \u00b0C reference point)<\/span><\/h2>\n<p>If you have a laboratory incubator available, you can run a check at 37 \u00b0C \u2014 a reference point commonly used in microbiological quality control.<\/p>\n<h3>Procedure<\/h3>\n<ol>\n<li>Set the incubator to 37 \u00b0C and allow it to reach a stable temperature.<\/li>\n<li>Place your Thermo Button or probe <strong>inside a closed container<\/strong> (a box or beaker) within the incubator, to protect it from air circulation variations.<\/li>\n<li>Wait for full stabilisation (at least 30 minutes), then note the readings.<\/li>\n<\/ol>\n<div style=\"background: #f2f6ff; border-left: 4px solid #62c5bc; border-radius: 0 6px 6px 0; padding: 16px 20px; margin: 20px 0;\">\n<p style=\"margin: 0;\"><strong>Expected result:<\/strong> the reading should be close to the incubator&#8217;s set point, within your unit&#8217;s guaranteed accuracy. Bear in mind that the incubator itself may have slight internal temperature variation.<\/p>\n<\/div>\n<\/section>\n<p><\/p>\n<section id=\"interpreter\">\n<h2><span style=\"color: #62c5bc;\">4. How to interpret the result<\/span><\/h2>\n<table style=\"width: 100%; border-collapse: collapse; font-size: 15px;\">\n<thead>\n<tr>\n<th style=\"background-color: #1e294e; color: #ffffff; text-align: left; padding: 10px 14px;\">Observed deviation<\/th>\n<th style=\"background-color: #1e294e; color: #ffffff; text-align: left; padding: 10px 14px;\">Interpretation<\/th>\n<th style=\"background-color: #1e294e; color: #ffffff; text-align: left; padding: 10px 14px;\">Recommended action<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">\u2264 model&#8217;s guaranteed accuracy<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Normal \u2014 unit is within specification<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Put into service<\/td>\n<\/tr>\n<tr style=\"background-color: #f2f6ff;\">\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Slightly above guaranteed accuracy<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">May be due to check conditions (uneven bath, insufficient stabilisation time)<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Repeat the check with more controlled conditions, or contact support<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Significantly above spec (&gt; 2 \u00b0C)<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Likely fault<\/td>\n<td style=\"padding: 10px 14px; border-bottom: 1px solid #dde3f0;\">Contact our technical support before putting the unit into service<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n<p><\/p>\n<section id=\"limites\">\n<h2><span style=\"color: #62c5bc;\">5. Limitations of these methods<\/span><\/h2>\n<p>These checks are useful, but come with limitations worth keeping in mind:<\/p>\n<ul>\n<li><strong>An ice bath is not perfectly uniform.<\/strong> Temperature can vary slightly from one point to another within the container. A thermostatically controlled laboratory bath provides far greater homogeneity.<\/li>\n<li><strong>You have no traceable reference probe.<\/strong> Without a calibrated standard, you&#8217;re only verifying that the unit behaves consistently against a known physical point (the ice melting point) \u2014 not that it&#8217;s accurate to within \u00b10.1 \u00b0C.<\/li>\n<li><strong>These methods produce no legally recognised certificate.<\/strong> They cannot be used as supporting documentation for a HACCP audit, pharmaceutical inspection, or equipment qualification.<\/li>\n<\/ul>\n<div style=\"background: #f2f6ff; border-left: 4px solid #62c5bc; border-radius: 0 6px 6px 0; padding: 16px 20px; margin: 20px 0;\">\n<p style=\"margin: 0 0 6px 0; font-size: 12px; font-weight: bold; text-transform: uppercase; letter-spacing: 0.08em; color: #62c5bc;\">Need a certified calibration?<\/p>\n<p style=\"margin: 0;\">Plug and Track offers an ISO 17025 accredited calibration service for all its temperature loggers. The certificate issued is traceable to national standards and accepted for regulatory audits. <a href=\"https:\/\/www.plugandtrack.com\/en\/services\/calibration\/\"><strong>Find out more about our calibration service \u2192<\/strong><\/a><\/p>\n<\/div>\n<\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Two simple methods to test your data logger before putting it into service. This article&#8230;<\/p>\n","protected":false},"author":6,"featured_media":12661,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4194],"tags":[],"class_list":["post-12607","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guide"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>How can I quickly check the accuracy of my sensor? - Plug and Track<\/title>\n<meta name=\"description\" content=\"Ice bath or incubator: two simple methods to quickly verify the accuracy of your Thermo Button or Plug and Track sensor upon receipt.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.plugandtrack.com\/en\/how-can-i-quickly-check-the-accuracy-of-my-sensor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can I quickly check the accuracy of my sensor? 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