{"id":16816,"date":"2026-03-11T16:03:15","date_gmt":"2026-03-11T16:03:15","guid":{"rendered":"https:\/\/chevrierinstruments.com\/produit\/co%e2%82%82-probe-2\/"},"modified":"2026-03-11T21:19:45","modified_gmt":"2026-03-11T21:19:45","slug":"co%e2%82%82-probe-2","status":"publish","type":"product","link":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/","title":{"rendered":"CO\u2082 Probe"},"content":{"rendered":"<p>The Vaisala CARBOCAP\u00ae GMP252 carbon dioxide sensor is a smart, self-contained sensor for measuring concentrations in ppm. It is suitable for measuring CO2 in agriculture, refrigeration, greenhouses, demanding HVAC applications, and by grow room manufacturers. It is ideal for challenging and humid CO2 measurement environments where stable and accurate CO2 level measurements are required. The operating temperature range is -40 to +60 \u00b0C, and the measurement range is 0 to 10,000 ppm CO2, with a lower accuracy of up to 30,000 ppm CO2.<\/p>\n<p>The GMP252 can also be placed inside the Vaisala DTR250 radiation shield for dynamically measuring CO<sub>2<\/sub> levels outdoors.<\/p>\n<h4>Belongs to the Indigo product range<\/h4>\n<p>The GMP252 probe is part of the Indigo product family and can also be connected to the Indigo500, Indigo300, and Indigo200 transmitters to expand functionality, such as display or relays. The GMP252 probe can also be used with the free Insight PC software.<\/p>\n<p>For spot checks, we recommend the Indigo80 handheld indicator.<\/p>\n<p>The GMP252 model replaces the following discontinued products: GMM222 and GMT222. Spare parts and accessories for the GMP252 probe are still available.<\/p>\n<h4>Features<\/h4>\n<ul>\n<li>Measurement range: 0 to 10,000 ppm CO\u2082<\/li>\n<li>Can be used for measurements up to 30,000 ppm CO\u2082 with reduced accuracy<\/li>\n<li>Smart, self-contained probe with analog (V, mA) and digital (RS485 with Vaisala or Modbus protocol) outputs<\/li>\n<li>Superior long-term stability thanks to second-generation CARBOCAP\u00ae technology<\/li>\n<li>Operating temperature: -40 to +60 \u00b0C<\/li>\n<li>IP65 rated enclosure<\/li>\n<li>Temperature and pressure compensation<\/li>\n<li>Integrated temperature measurement for CO\u2082 compensation<\/li>\n<li>Compensation for other gases present: O\u2082 and humidity<\/li>\n<li>Sensor head heated sensor to prevent condensation<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" title=\"Vaisala CARBOCAP Series GMP250 for Carbon Dioxide Measurements\" src=\"https:\/\/www.youtube.com\/embed\/lOR1exQS7Ho\" width=\"389\" height=\"219\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/p>\n<h4><\/h4>\n","protected":false},"excerpt":{"rendered":"<h2>GMP252<\/h2>\n<p>For measuring ppm concentrations in demanding agriculture, refrigeration, and HVAC (Heating, Ventilation, and Air Conditioning) applications, and for grow room manufacturers<\/p>\n","protected":false},"featured_media":16808,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[1260,1258,436,1730,2279],"product_tag":[2340,2066],"class_list":["post-16816","product","type-product","status-publish","has-post-thumbnail","product_cat-co2-en","product_cat-gas","product_cat-gas-and-combustion-analysers","product_cat-indoor-air-quality-en","product_cat-portables-en-2","product_tag-co2-probe","product_tag-sonde-qualite-de-lair-co2-en","first","instock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CO\u2082 Probe - Chevrier Instruments inc.<\/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:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CO\u2082 Probe - Chevrier Instruments inc.\" \/>\n<meta property=\"og:description\" content=\"GMP252 For measuring ppm concentrations in demanding agriculture, refrigeration, and HVAC (Heating, Ventilation, and Air Conditioning) applications, and for grow room manufacturers\" \/>\n<meta property=\"og:url\" content=\"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Chevrier Instruments inc.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-11T21:19:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/chevrierinstruments.com\/wp-content\/uploads\/2026\/03\/Vaisala-PROD-GMP252-1280x960-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1290\" \/>\n\t<meta property=\"og:image:height\" content=\"960\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\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:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/\",\"url\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/\",\"name\":\"CO\u2082 Probe - Chevrier Instruments inc.\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/chevrierinstruments.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/Vaisala-PROD-GMP252-1280x960-1.jpg\",\"datePublished\":\"2026-03-11T16:03:15+00:00\",\"dateModified\":\"2026-03-11T21:19:45+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/#primaryimage\",\"url\":\"https:\\\/\\\/chevrierinstruments.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/Vaisala-PROD-GMP252-1280x960-1.jpg\",\"contentUrl\":\"https:\\\/\\\/chevrierinstruments.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/Vaisala-PROD-GMP252-1280x960-1.jpg\",\"width\":1290,\"height\":960},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/produit\\\/co%e2%82%82-probe-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"CO\u2082 Probe\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/\",\"name\":\"Chevrier Instruments inc.\",\"description\":\"La r\u00e9f\u00e9rence en instruments de mesure\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/chevrierinstruments.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"CO\u2082 Probe - Chevrier Instruments inc.","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:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/","og_locale":"en_US","og_type":"article","og_title":"CO\u2082 Probe - Chevrier Instruments inc.","og_description":"GMP252 For measuring ppm concentrations in demanding agriculture, refrigeration, and HVAC (Heating, Ventilation, and Air Conditioning) applications, and for grow room manufacturers","og_url":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/","og_site_name":"Chevrier Instruments inc.","article_modified_time":"2026-03-11T21:19:45+00:00","og_image":[{"width":1290,"height":960,"url":"https:\/\/chevrierinstruments.com\/wp-content\/uploads\/2026\/03\/Vaisala-PROD-GMP252-1280x960-1.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/","url":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/","name":"CO\u2082 Probe - Chevrier Instruments inc.","isPartOf":{"@id":"https:\/\/chevrierinstruments.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/#primaryimage"},"image":{"@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/#primaryimage"},"thumbnailUrl":"https:\/\/chevrierinstruments.com\/wp-content\/uploads\/2026\/03\/Vaisala-PROD-GMP252-1280x960-1.jpg","datePublished":"2026-03-11T16:03:15+00:00","dateModified":"2026-03-11T21:19:45+00:00","breadcrumb":{"@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/#primaryimage","url":"https:\/\/chevrierinstruments.com\/wp-content\/uploads\/2026\/03\/Vaisala-PROD-GMP252-1280x960-1.jpg","contentUrl":"https:\/\/chevrierinstruments.com\/wp-content\/uploads\/2026\/03\/Vaisala-PROD-GMP252-1280x960-1.jpg","width":1290,"height":960},{"@type":"BreadcrumbList","@id":"https:\/\/chevrierinstruments.com\/en\/produit\/co%e2%82%82-probe-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/chevrierinstruments.com\/en\/"},{"@type":"ListItem","position":2,"name":"CO\u2082 Probe"}]},{"@type":"WebSite","@id":"https:\/\/chevrierinstruments.com\/en\/#website","url":"https:\/\/chevrierinstruments.com\/en\/","name":"Chevrier Instruments inc.","description":"La r\u00e9f\u00e9rence en instruments de mesure","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/chevrierinstruments.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/product\/16816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/media\/16808"}],"wp:attachment":[{"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/media?parent=16816"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/product_brand?post=16816"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/product_cat?post=16816"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chevrierinstruments.com\/en\/wp-json\/wp\/v2\/product_tag?post=16816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}