{"id":1389,"date":"2026-03-09T12:33:59","date_gmt":"2026-03-09T19:33:59","guid":{"rendered":"https:\/\/www.airmonitor.com\/industrial\/?p=1389"},"modified":"2026-03-09T12:34:06","modified_gmt":"2026-03-09T19:34:06","slug":"pitot-averaging-flow-stations-with-auto-purge-iii-part-2","status":"publish","type":"post","link":"https:\/\/www.airmonitor.com\/industrial\/blog\/pitot-averaging-flow-stations-with-auto-purge-iii-part-2\/","title":{"rendered":"Pitot Averaging Flow Stations with AUTO-Purge III (Part 2)"},"content":{"rendered":"\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-03c3468\" id=\"part-2-why-dirty-airflows-demand-special-measurement-solutions\" data-block-id=\"03c3468\"><h2 class=\"stk-block-heading__text\">Part 2: Why Dirty Airflows Demand Special Measurement Solutions<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-4a93000\" data-block-id=\"4a93000\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-4a93000-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-0b4abc1\" data-v=\"4\" data-block-id=\"0b4abc1\"><style>@media screen and (min-width: 768px){.stk-0b4abc1 {flex:var(--stk-flex-grow, 1) 1 calc(75% - var(--stk-column-gap, 0px) * 1 \/ 2 ) !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-0b4abc1-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-0b4abc1-inner-blocks\">\n<p>In<a href=\"https:\/\/www.airmonitor.com\/industrial\/blog\/pitot-averaging-flow-measurement-blog-series-part-1\/\"> Part 1<\/a>, we explored how pitot averaging technology delivers superior accuracy by capturing true airflow velocity across entire duct cross-sections. But in real-world industrial environments\u2014cement kilns, baghouse inlets, coal mills, and material handling systems\u2014airflows don&#8217;t flow through clean ducts. They carry dust, moisture, sticky residue, corrosive gases, and abrasive particles that rapidly degrade conventional measurement equipment.<\/p>\n\n\n\n<p>This is where the challenge deepens: How do you maintain accurate, reliable airflow measurement when the environment itself is clogging or fouling the sensors?<\/p>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-fe3d3bc\" data-v=\"4\" data-block-id=\"fe3d3bc\"><style>@media screen and (min-width: 768px){.stk-fe3d3bc {flex:var(--stk-flex-grow, 1) 1 calc(25% - var(--stk-column-gap, 0px) * 1 \/ 2 ) !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-fe3d3bc-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-fe3d3bc-inner-blocks\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-1024x1024.png\" alt=\"CA Station \u2013 Combustion Airflow Measurement Station\" class=\"wp-image-126\" style=\"aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-1024x1024.png 1024w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-300x300.png 300w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-150x150.png 150w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-768x768.png 768w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-75x75.png 75w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-600x600.png 600w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-500x500.png 500w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-655x655.png 655w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-180x180.png 180w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-0927a00\" id=\"the-unique-challenges-of-particulate-laden-airflows\" data-block-id=\"0927a00\"><h2 class=\"stk-block-heading__text\">The Unique Challenges of Particulate-Laden Airflows<\/h2><\/div>\n\n\n\n<p>Facilities monitoring cement kiln exhausts, baghouse inlet\/outlet flows, material handling conveyor air, or coal-fired power plant ash systems encounter airflows contaminated with fine particulates, sticky dust, moisture, or abrasive materials. These contaminants present four critical measurement challenges:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">#1 &#8211; Sensor Fouling and Drift<\/h3>\n\n\n\n<p>Dust particles, moisture, or sticky residue accumulate on unprotected sensor elements, degrading accuracy, causing erratic readings, or leading to complete sensor failure within days or weeks rather than months or years. An averaging pitot probe placed at a baghouse inlet, where dust concentration is highest, can become fouled within 48\u201372 hours of operation. Once fouled, the probe delivers less reliable data\u2014it becomes a liability consuming maintenance resources while providing less confidence in measurements.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">#2 &#8211; Pressure Line Blockages<\/h3>\n\n\n\n<p>Fine dust can plug pressure sensing lines or orifices, preventing true differential pressure measurement. When pressure lines clog, the transmitter receives zero or erratic differential pressure signals, making the system useless for control or compliance documentation. Operators then resort to manual portable measurements which are episodic, labor-intensive, and incapable of supporting continuous process optimization.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">#3 &#8211; Corrosion<\/h3>\n\n\n\n<p>Acidic gases, moisture, or reactive dust can corrode unprotected metal components, shortening equipment life and increasing maintenance costs. In cement production, kiln exhaust contains sulfuric acid vapor and hygroscopic dust that accelerates corrosion. In power generation, coal dust and fly ash create corrosive, abrasive environments. Without protective measures, sensor housings, orifices, and internal passages degrade, requiring premature replacement.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">#4 &#8211; Temperature Extremes<\/h3>\n\n\n\n<p>High-temperature kiln exhausts or cooler ambient air can stress sensor elements and electronics, requiring specialized materials and designs. A pitot probe positioned at a 400\u00b0F kiln outlet faces thermal cycling that expands and contracts materials differently, creating micro-cracks and sensor drift. Conventional transmitters designed for HVAC comfort applications (70\u201380\u00b0F) simply cannot tolerate these extremes.<\/p>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-c087112\" data-block-id=\"c087112\"><style>.stk-c087112 .stk-img-figcaption{text-align:center !important;font-style:italic !important;}.stk-c087112 .stk-img-wrapper{width:70% !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img decoding=\"async\" class=\"stk-img wp-image-1390\" src=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/dusty-airflow-fouling.png\" width=\"813\" height=\"578\" alt=\"Pressure port cross sections on pitot tubes to measure total and static pressure\" srcset=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/dusty-airflow-fouling.png 813w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/dusty-airflow-fouling-300x213.png 300w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/dusty-airflow-fouling-768x546.png 768w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/dusty-airflow-fouling-655x466.png 655w\" sizes=\"(max-width: 813px) 100vw, 813px\" \/><\/span><figcaption class=\"stk-img-figcaption\">Image of extra large duct with dust accumulation for dirty airflow application.<\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-9ab6601\" data-block-id=\"9ab6601\"><p class=\"stk-block-text__text\"><\/p><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">The Hidden Cost of Conventional Sensors<\/h2>\n\n\n\n<p>Without active protection mechanisms, conventional airflow measurement equipment in dirty environments often becomes a liability rather than an asset. Consider a typical scenario:<\/p>\n\n\n\n<p>A facility installs an electronic airflow sensor at a baghouse inlet to monitor collection efficiency. Initial cost: $3,000\u2013$5,000. Within three weeks, dust accumulation causes erratic readings. The sensor requires removal and cleaning\u2014requiring ductwork access, mechanical labor, and production disruption. After cleaning, it functions briefly, then fouls again. After the third cleaning cycle and two replacement cycles in 18 months, the facility has spent $15,000\u2013$20,000 in equipment and labor, plus the cost of missed compliance documentation or inefficient baghouse operation. This cycle repeats because the root problem\u2014sensor fouling\u2014was never addressed. The sensor works only when clean, but the environment constantly fouls it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Real-World Impact: Why Continuous Measurement Matters<\/h2>\n\n\n\n<p>In contrast, a facility with reliable, continuous airflow measurement can:<\/p>\n\n\n\n<p><strong>Optimize process operation<\/strong>: <\/p>\n\n\n\n<p>For instance, in cement baghouses, operators adjust pulse-jet cleaning frequency, duration, and intensity. Based on actual airflow trends, unnecessary cleaning cycles are reduced, and filter life is extended.<\/p>\n\n\n\n<p><strong>Detect filter blinding early<\/strong>: <\/p>\n\n\n\n<p>Real-time airflow trends show when filters are approaching saturation, allowing scheduled cleaning before bypass or visible emissions occur.<\/p>\n\n\n\n<p><strong>Maintain regulatory compliance<\/strong>: <\/p>\n\n\n\n<p>Continuous data streams provide compliance records for EPA, OSHA, and provincial emission standards. Up-to-date data can eliminate the risk of violations during unannounced inspections.<\/p>\n\n\n\n<p><strong>Identify system problems before they escalate<\/strong>: <\/p>\n\n\n\n<p>Declining airflow trends can indicate duct leaks, damper failures, or fan degradation\u2014problems that remain hidden until equipment fails catastrophically.<\/p>\n\n\n\n<p><strong>Optimize energy consumption<\/strong>: <\/p>\n\n\n\n<p>Knowing true airflow allows fan operators to run at minimum speed necessary to maintain target efficiency. This reduces energy waste and lowers operating costs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Standard Sensors Fail in Dirty Environments<\/h2>\n\n\n\n<p>The fundamental problem is that conventional airflow sensors assume relatively clean air. Many are engineered for commercial HVAC (typical 50\u2013100 microns dust). Few are constructed for industrial settings (1\u201350 microns fine dust, often at high concentration). Conventional pressure sensing elements, orifices, and internal passages are too small, too exposed, or too sensitive to fouling to handle:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Baghouse inlet dust loads (10\u2013100+ mg\/m\u00b3)<\/li>\n\n\n\n<li>Cement mill outlet particulate (50\u2013500 mg\/m\u00b3)<\/li>\n\n\n\n<li>Coal pulverizer exhaust (100\u20131000+ mg\/m\u00b3)<\/li>\n<\/ul>\n\n\n\n<p>Any of these environments will foul a conventional sensor within days or weeks.<\/p>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-0873fa0\" data-block-id=\"0873fa0\"><style>.stk-0873fa0 .stk-img-figcaption{text-align:center !important;font-style:italic !important;}.stk-0873fa0 .stk-img-wrapper{width:723px !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img decoding=\"async\" class=\"stk-img wp-image-1391\" src=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports.png\" width=\"1303\" height=\"970\" alt=\"Non-uniform airflow profiles in duct cross sections with flow measurement.\" srcset=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports.png 1303w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports-300x223.png 300w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports-1024x762.png 1024w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports-768x572.png 768w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/airfoils-dust-plugged-ports-655x488.png 655w\" sizes=\"(max-width: 1303px) 100vw, 1303px\" \/><\/span><figcaption class=\"stk-img-figcaption\">Image shows airfoils plugged with dust in a dirty airflow application.<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">The Solution: Engineered Sensor Protection<\/h2>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-eee6567\" data-block-id=\"eee6567\"><p class=\"stk-block-text__text\">This is where active purge systems become essential. Rather than accepting sensor fouling as inevitable, a purpose-engineered solution prevents fouling proactively.<\/p><\/div>\n\n\n\n<p>Air Monitor&#8217;s AUTO-purge III system addresses this challenge through continuous or on-demand active sensor protection. By injecting clean, compressed air or inert gas through internal passages within the probe, the purge system creates a protective barrier that:<\/p>\n\n\n\n<p>&#8211; <strong>Prevents dust accumulation<\/strong>: The purge flow gently dislodges and sweeps away dust, moisture, and residue from sensing elements before they can build up, clog, or degrade sensor accuracy.<\/p>\n\n\n\n<p>&#8211; <strong>Maintains measurement integrity<\/strong>: By keeping pressure taps and sensing elements clean, AUTO-purge III ensures that differential pressure readings remain true and representative of actual airflow conditions.<\/p>\n\n\n\n<p>&#8211; <strong>Extends probe lifespan<\/strong>: Proactive cleaning dramatically reduces the frequency of probe removal, recalibration, or replacement, lowering total cost of ownership and minimizing production disruptions.<\/p>\n\n\n\n<p>&#8211; <strong>Enables continuous, unattended operation<\/strong>: Unlike manual cleaning methods that require system downtime and operator intervention, AUTO-purge III operates automatically, allowing measurement systems to run 24\/7 with minimal supervision.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>From Reactive Maintenance to Proactive Protection<\/strong><\/h2>\n\n\n\n<p>The shift from conventional sensors that foul and require frequent cleaning to AUTO-purge III systems that prevent fouling represents a fundamental change in philosophy. Instead of accepting degraded performance as normal and planning for frequent maintenance, facilities adopt a proactive approach where sensor cleanliness is maintained continuously.<\/p>\n\n\n\n<p>This shift has downstream implications:<\/p>\n\n\n\n<p>&#8211; <strong>More confident operational decisions<\/strong>: Operators know that airflow data is reliable, not degraded by fouling artifacts.<\/p>\n\n\n\n<p>&#8211; <strong>Better regulatory documentation<\/strong>: Continuous, clean data streams provide auditable compliance records.<\/p>\n\n\n\n<p>&#8211; <strong>Lower total cost<\/strong>: Despite higher initial investment, fewer maintenance interventions and emergency repairs drive down long-term operating costs.<\/p>\n\n\n\n<p>&#8211; <strong>Higher system availability<\/strong>: Without scheduled probe removal for cleaning, airflow monitoring runs uninterrupted.<\/p>\n\n\n\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-da07685\" data-block-id=\"da07685\"><style>.stk-da07685 .stk-img-figcaption{text-align:center !important;font-style:italic !important;}.stk-da07685 .stk-img-wrapper{width:723px !important;}<\/style><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img decoding=\"async\" class=\"stk-img wp-image-1392\" src=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/flow-station-with-auto-purge-field-image.png\" width=\"721\" height=\"502\" alt=\"Non-uniform airflow profiles in duct cross sections with flow measurement.\" srcset=\"https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/flow-station-with-auto-purge-field-image.png 721w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/flow-station-with-auto-purge-field-image-300x209.png 300w, https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/flow-station-with-auto-purge-field-image-655x456.png 655w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/span><figcaption class=\"stk-img-figcaption\">Field image of a custom Air Monitor flow station equipped with AUTO-purge III system installed in a dusty industrial environment.<\/figcaption><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Bringing Technology and Application Expertise Together<\/strong><\/h2>\n\n\n\n<p>Understanding these challenges is critical. It frames why pitot averaging technology alone\u2014while superior to single-point measurement\u2014is insufficient in dirty environments. The technology must be protected through engineered solutions like AUTO-purge III which address the contaminant challenges of dirty industrial airflows. In Part 3 of this series, we&#8217;ll explore how these two technologies offer a comprehensive solution in harsh industrial environments. We&#8217;ll examine real-world applications, integration with facility control systems, and why this combination delivers unmatched reliability and value.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-3b92fa9\" data-block-id=\"3b92fa9\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-d539e1c\" data-block-id=\"d539e1c\"><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"https:\/\/www.airmonitor.com\/industrial\/product-category\/purge-systems\/\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">View Purge Products<\/span><\/a><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Part 2: Why Dirty Airflows Demand Special Measurement Solutions In Part 1, we explored how pitot averaging technology delivers superior accuracy by capturing true airflow velocity across entire duct cross-sections. But in real-world industrial environments\u2014cement kilns, baghouse inlets, coal mills, and material handling systems\u2014airflows don&#8217;t flow through clean ducts. They carry dust, moisture, sticky residue, [&hellip;]<\/p>\n","protected":false},"author":249,"featured_media":126,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","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":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-1389","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-industrial-blog-topics","8":"entry"},"acf":[],"featured_image_urls_v2":{"full":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",1440,1440,false],"thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-150x150.png",150,150,true],"medium":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-300x300.png",300,300,true],"medium_large":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-768x768.png",768,768,true],"large":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-1024x1024.png",1024,1024,true],"1536x1536":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",1440,1440,false],"2048x2048":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",1440,1440,false],"sidebar-featured":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-75x75.png",75,75,true],"product-application-square":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-300x300.png",300,300,true],"gb-block-post-grid-landscape":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",400,400,false],"gb-block-post-grid-square":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",600,600,false],"woocommerce_thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-500x500.png",500,500,true],"woocommerce_single":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-655x655.png",655,655,true],"woocommerce_gallery_thumbnail":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station-180x180.png",180,180,true],"gform-image-choice-sm":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",300,300,false],"gform-image-choice-md":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",400,400,false],"gform-image-choice-lg":["https:\/\/www.airmonitor.com\/industrial\/wp-content\/uploads\/sites\/3\/combustion-airflow-measurement-station.png",600,600,false]},"post_excerpt_stackable_v2":"<p>Part 2: Why Dirty Airflows Demand Special Measurement Solutions In Part 1, we explored how pitot averaging technology delivers superior accuracy by capturing true airflow velocity across entire duct cross-sections. But in real-world industrial environments\u2014cement kilns, baghouse inlets, coal mills, and material handling systems\u2014airflows don&#8217;t flow through clean ducts. They carry dust, moisture, sticky residue, corrosive gases, and abrasive particles that rapidly degrade conventional measurement equipment. This is where the challenge deepens: How do you maintain accurate, reliable airflow measurement when the environment itself is clogging or fouling the sensors? The Unique Challenges of Particulate-Laden Airflows Facilities monitoring cement kiln&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.airmonitor.com\/industrial\/blog\/category\/industrial-blog-topics\/\" rel=\"category tag\">Applications<\/a>","author_info_v2":{"name":"Ria Edens","url":"https:\/\/www.airmonitor.com\/industrial\/blog\/author\/redens\/"},"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>Pitot Averaging Flow Stations with AUTO-Purge III (Part 2) - Industrial | Air Monitor<\/title>\n<meta name=\"description\" content=\"Pitot averaging with AUTO-purge III delivers superior airflow measurement accuracy for dirty airflow systems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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