{"product_id":"liebert-b02-0190s","title":"Liebert B02-0190S Sensing Switch","description":"\u003cp\u003eThe \u003cstrong\u003eLiebert B02-0190S\u003c\/strong\u003e is a high-precision \u003cstrong\u003edifferential pressure switch\u003c\/strong\u003e engineered specifically for technical cooling environments, including data centers and server rooms. As an \u003cstrong\u003eOEM Airflo Sensing Switch\u003c\/strong\u003e, this component is critical for monitoring velocity and static pressure within \u003cstrong\u003eLiebert DS\u003c\/strong\u003e and \u003cstrong\u003eInteleCool 2\u003c\/strong\u003e units. It functions by detecting minimal pressure variations to ensure constant air circulation over sensitive electronic components, triggering an \u003cstrong\u003einternal relay alarm\u003c\/strong\u003e if airflow drops below the calibrated threshold. Designed for industrial-grade reliability, the \u003cstrong\u003eB02-0190S\u003c\/strong\u003e features a compact housing that supports versatile mounting vertical or horizontal to fit tight plenum spaces or internal cabinetry. Integrating this switch into a \u003cstrong\u003eBuilding Management System (BMS)\u003c\/strong\u003e allows for proactive thermal management, preventing high head pressure events and compressor strain. For contractors conducting preventative maintenance or emergency repairs, this \u003cstrong\u003eairflow sensing switch\u003c\/strong\u003e provides the accurate feedback loop necessary to maintain design-specified CFM and site uptime without the risk of nuisance trips associated with lower-quality aftermarket equivalents.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect OEM Replacement:\u003c\/strong\u003e Matches exact factory specifications for \u003cstrong\u003eLiebert HVAC equipment\u003c\/strong\u003e, ensuring seamless mechanical and electrical fit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCritical System Protection:\u003c\/strong\u003e Prevents costly downtime by providing early detection of fan failures, blocked filters, or obstructed ductwork.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBMS Integration:\u003c\/strong\u003e Equipped with reliable \u003cstrong\u003erelay contacts\u003c\/strong\u003e for immediate integration into data center monitoring and remote alarm systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Built to withstand the continuous-duty cycles of high-performance cooling systems in mission-critical facilities.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Accuracy Sensing:\u003c\/strong\u003e Calibrated for precision detection of low-pressure differentials to ensure equipment safety during low-load operations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I troubleshoot a 'No Airflow' alarm when the fans are running?\u003c\/strong\u003e\u003cbr\u003e\nFirst, inspect the sensing tubes for cracks, moisture, or blockages. Use a calibrated \u003cstrong\u003emanometer\u003c\/strong\u003e to verify that the system is generating the required \u003cstrong\u003einches of water column (WC)\u003c\/strong\u003e to satisfy the switch setting. If pressure is adequate but the switch remains open, check for electrical continuity across the terminals.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan the B02-0190S be used in both upflow and downflow configurations?\u003c\/strong\u003e\u003cbr\u003e\nYes, its compact design allows for versatile installation. However, ensure the switch is oriented correctly as per the manufacturer's diagram, as improper mounting can affect the internal diaphragm's sensitivity and the \u003cstrong\u003ehysteresis\u003c\/strong\u003e of the trip point.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat causes these switches to fail prematurely in data centers?\u003c\/strong\u003e\u003cbr\u003e\nThe most common causes are environmental debris entering the sensing lines or moisture accumulation in the housing. Always ensure the \u003cstrong\u003ebarbed fittings\u003c\/strong\u003e are secure and that the tubing remains unobstructed during routine filter changes to maintain \u003cstrong\u003eoptimal cooling capacity\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Liebert","offers":[{"title":"Default Title","offer_id":44970352935090,"sku":"B02-0190S","price":191.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_a5c3d612-e707-4689-ac5e-f57f41d4cc4e.png?v=1747955457","url":"https:\/\/www.gsistore.com\/en-ca\/products\/liebert-b02-0190s","provider":"GSIstore","version":"1.0","type":"link"}