{"id":186,"date":"2019-12-10T11:06:28","date_gmt":"2019-12-10T19:06:28","guid":{"rendered":"https:\/\/airmonitor.millermediallc.com\/industrial\/?post_type=product&#038;p=186"},"modified":"2025-08-27T12:15:21","modified_gmt":"2025-08-27T19:15:21","slug":"vel-trol-ii-transmitter","status":"publish","type":"product","link":"https:\/\/www.airmonitor.com\/industrial\/product\/vel-trol-ii-transmitter\/","title":{"rendered":"VEL-trol II"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p><strong>Product Type<\/strong>: Differential Pressure &amp; Flow Transmitters<br \/>\n<strong>Technology Type<\/strong>: Ultra-low range DP &amp; Flow Transmitter with a controller and Auto Zero<\/p>\n<p>Get process control with ultra-low flow accuracy and reliable airflow measurement over time with auto zeroing capability.<\/p>\n<p>The VEL-trol II transmitter-controller is furnished with an automatic zeroing circuit capable of electronically adjusting the transmitter zero at predetermined time intervals while simultaneously holding the transmitter output signal. The VEL-trol II transmitter incorporates the three control modes of proportional, integral reset, and inverse derivative. This feature permits the controller action to be tuned to the extreme dynamics of the airflow or pressurization control process.<\/p>\n<ul>\n<li>High accuracy at very low flows<\/li>\n<li>Automatic zeroing to avoid offset drifts<\/li>\n<li>Maintain control of associated process variables<\/li>\n<\/ul>\n","protected":false},"featured_media":187,"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":[20,24],"product_tag":[],"class_list":{"0":"post-186","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-differential-pressure-transmitters","7":"product_cat-static-pressure-sensors","8":"product_application-clean-air-process","9":"product_application-combustion-airflow","10":"product_application-dirty-air-process","11":"entry","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-150x150.png",150,150,true],"medium":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-300x300.png",300,300,true],"medium_large":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"large":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"1536x1536":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"2048x2048":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"sidebar-featured":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-75x75.png",75,75,true],"product-application-square":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-300x300.png",300,300,true],"gb-block-post-grid-landscape":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",400,400,false],"gb-block-post-grid-square":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"woocommerce_thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-500x500.png",500,500,true],"woocommerce_single":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false],"woocommerce_gallery_thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter-180x180.png",180,180,true],"gform-image-choice-sm":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",300,300,false],"gform-image-choice-md":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",400,400,false],"gform-image-choice-lg":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/vel-trol-ii-transmitter.png",600,600,false]},"post_excerpt_stackable_v2":"<p><strong>Product Type<\/strong>: Differential Pressure &amp; Flow Transmitters<br \/>\n<strong>Technology Type<\/strong>: Ultra-low range DP &amp; Flow Transmitter with a controller and Auto Zero<\/p>\n<p>Get process control with ultra-low flow accuracy and reliable airflow measurement over time with auto zeroing capability.<\/p>\n<p>The VEL-trol II transmitter-controller is furnished with an automatic zeroing circuit capable of electronically adjusting the transmitter zero at predetermined time intervals while simultaneously holding the transmitter output signal. The VEL-trol II transmitter incorporates the three control modes of proportional, integral reset, and inverse derivative. This feature permits the controller action to be tuned to the extreme dynamics of the airflow or pressurization control process.<\/p>\n<ul>\n<li>High accuracy at very low flows<\/li>\n<li>Automatic zeroing to avoid offset drifts<\/li>\n<li>Maintain control of associated process variables<\/li>\n<\/ul>\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>VEL-trol II - Industrial | Air Monitor<\/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:\/\/www.airmonitor.com\/industrial\/product\/vel-trol-ii-transmitter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VEL-trol II - Industrial | Air Monitor\" \/>\n<meta property=\"og:description\" content=\"Product Type: Differential Pressure &amp; Flow Transmitters Technology Type: Ultra-low range DP &amp; Flow Transmitter with a controller and Auto Zero  Get process control with ultra-low flow accuracy and reliable airflow measurement over time with auto zeroing capability.  The VEL-trol II transmitter-controller is furnished with an automatic zeroing circuit capable of electronically adjusting the transmitter zero at predetermined time intervals while simultaneously holding the transmitter output signal. The VEL-trol II transmitter incorporates the three control modes of proportional, integral reset, and inverse derivative. This feature permits the controller action to be tuned to the extreme dynamics of the airflow or pressurization control process.   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