{"id":189,"date":"2019-09-11T10:45:00","date_gmt":"2019-09-11T17:45:00","guid":{"rendered":"https:\/\/airmonitor.millermediallc.com\/hvac\/?post_type=product&#038;p=189"},"modified":"2026-05-22T09:10:55","modified_gmt":"2026-05-22T16:10:55","slug":"oam-ii-outdoor-airflow-measurement-system","status":"publish","type":"product","link":"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/","title":{"rendered":"OAM II Outdoor Airflow Measurement System &#038; Airflow Station"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"[button url=\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/Outside-Airflow-Technologies_DOC-0004778.pdf\"\u00a0title=\"Learn How Air Monitor Accurately Measures Outdoor Airflow\"]\n[button url=\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/IAQ-Compliance-Guide.pdf\" title=\"Download our IAQ Compliance Guide\"]\n<p>OAM II Outdoor Airflow Measurement Systems consist of the OAM II Transmitter with built-in barometric pressure sensor, one or more uni-sensors or OAM II Airflow Stations, and one or two temperature sensors. The system has been designed to measure the actual airflow rate to within \u00b15% by measuring differential pressure across a fixed inlet, such as a louver, screen or layer of expanded metal.<\/p>\n<p>The OAM II Transmitter has been optimized for most common outdoor airflow applications. It is provided with a color graphics display, 4 analog outputs and RS485 BACnet \/ MODBUS.<\/p>\n<p>Air Monitor\u2019s uni-sensor flow element is made for outdoor airflow measurement. It is unaffected by airborne dust, debris, and moisture. The innovative design provides reliable flow measurement without the need for long straight runs and it is largely immune to effects of shifting wind loads and wind gusts.<\/p>\n<p>OAM II Airflow Stations ease installation and commissioning by factory mounting sensors onto a layer of expanded metal of known fixed resistance welded into a galvanized sheet metal casing. In many applications, the known fixed resistance of the OAM II Airflow Station allows the overall system to be pre-calibrated at the factory for plug-n-play operation.<\/p>\n","protected":false},"featured_media":190,"template":"","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":""},"product_brand":[],"product_cat":[31],"product_tag":[],"class_list":{"0":"post-189","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-outdoor-airflow-measurement","7":"product_application-building-airflow-measurement-control","8":"product_application-indoor-air-quality","9":"product_application-outdoor-airflow-monitoring-indoor-air-quality","10":"product_application-outdoor-airflow-monitoring","11":"entry","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",3000,3000,false],"thumbnail":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-150x150.png",150,150,true],"medium":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-300x300.png",300,300,true],"medium_large":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-768x768.png",768,768,true],"large":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-1024x1024.png",1024,1024,true],"1536x1536":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-1536x1536.png",1536,1536,true],"2048x2048":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-2048x2048.png",2048,2048,true],"sidebar-featured":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-75x75.png",75,75,true],"product-application-square":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-300x300.png",300,300,true],"gb-block-post-grid-landscape":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",400,400,false],"gb-block-post-grid-square":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",600,600,false],"woocommerce_thumbnail":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-500x500.png",500,500,true],"woocommerce_single":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-655x655.png",655,655,true],"woocommerce_gallery_thumbnail":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-180x180.png",180,180,true],"gform-image-choice-sm":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",300,300,false],"gform-image-choice-md":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",400,400,false],"gform-image-choice-lg":["https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png",600,600,false]},"post_excerpt_stackable_v2":"[button url=\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/Outside-Airflow-Technologies_DOC-0004778.pdf\"\u00a0title=\"Learn How Air Monitor Accurately Measures Outdoor Airflow\"]\n[button url=\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/IAQ-Compliance-Guide.pdf\" title=\"Download our IAQ Compliance Guide\"]\n<p>OAM II Outdoor Airflow Measurement Systems consist of the OAM II Transmitter with built-in barometric pressure sensor, one or more uni-sensors or OAM II Airflow Stations, and one or two temperature sensors. The system has been designed to measure the actual airflow rate to within \u00b15% by measuring differential pressure across a fixed inlet, such as a louver, screen or layer of expanded metal.<\/p>\n<p>The OAM II Transmitter has been optimized for most common outdoor airflow applications. It is provided with a color graphics display, 4 analog outputs and RS485 BACnet \/ MODBUS.<\/p>\n<p>Air Monitor\u2019s uni-sensor flow element is made for outdoor airflow measurement. It is unaffected by airborne dust, debris, and moisture. The innovative design provides reliable flow measurement without the need for long straight runs and it is largely immune to effects of shifting wind loads and wind gusts.<\/p>\n<p>OAM II Airflow Stations ease installation and commissioning by factory mounting sensors onto a layer of expanded metal of known fixed resistance welded into a galvanized sheet metal casing. In many applications, the known fixed resistance of the OAM II Airflow Station allows the overall system to be pre-calibrated at the factory for plug-n-play operation.<\/p>\n","category_list_v2":"","author_info_v2":{"name":"","url":""},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>OAM II Outdoor Airflow System - HVAC | Air Monitor<\/title>\n<meta name=\"description\" content=\"OAM II outdoor airflow system delivers \u00b15% accurate outdoor air measurement with uni-sensor stations and BACnet\/Modbus integration.\" \/>\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.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OAM II Outdoor Airflow System - HVAC | Air Monitor\" \/>\n<meta property=\"og:description\" content=\"OAM II outdoor airflow system delivers \u00b15% accurate outdoor air measurement with uni-sensor stations and BACnet\/Modbus integration.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/\" \/>\n<meta property=\"og:site_name\" content=\"HVAC | Air Monitor\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-22T16:10:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor-1024x1024.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\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=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/\",\"url\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/\",\"name\":\"OAM II Outdoor Airflow System - HVAC | Air Monitor\",\"isPartOf\":{\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png\",\"datePublished\":\"2019-09-11T17:45:00+00:00\",\"dateModified\":\"2026-05-22T16:10:55+00:00\",\"description\":\"OAM II outdoor airflow system delivers \u00b15% accurate outdoor air measurement with uni-sensor stations and BACnet\/Modbus integration.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/#primaryimage\",\"url\":\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png\",\"contentUrl\":\"https:\/\/www.airmonitor.com\/hvac\/wp-content\/uploads\/sites\/2\/oam-ii-outdoor.png\",\"width\":3000,\"height\":3000,\"caption\":\"OAM II Outdoor Airflow Measurement System & Airflow Station\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.airmonitor.com\/hvac\/product\/oam-ii-outdoor-airflow-measurement-system\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.airmonitor.com\/hvac\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"HVAC Products\",\"item\":\"https:\/\/www.airmonitor.com\/hvac\/products\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"OAM II Outdoor Airflow Measurement System &#038; 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