{"product_id":"automation-components-inc-aci-a-1k-3w-ra-18-sensor","title":"Automation Components Inc (ACI) A\/1K-3W-RA-18 Sensor","description":"\u003cp\u003eThe Automation Components Inc (ACI) \u003cstrong\u003eA\/1K-3W-RA-18\u003c\/strong\u003e is a professional-grade \u003cstrong\u003erigid averaging temperature sensor\u003c\/strong\u003e designed for precise climate control in critical \u003cstrong\u003eHVAC and Building Automation Systems (BAS)\u003c\/strong\u003e. This unit features a \u003cstrong\u003e1K Ohm Platinum RTD\u003c\/strong\u003e sensing element with a standard 0.00385 temperature coefficient, ensuring stable resistance-to-temperature linear output. Built with a \u003cstrong\u003ethree-wire configuration\u003c\/strong\u003e, the sensor effectively compensates for lead wire resistance, providing superior accuracy in \u003cstrong\u003elarge-sized ducts\u003c\/strong\u003e and \u003cstrong\u003eAir Handling Units (AHUs)\u003c\/strong\u003e. The 18-inch 304 stainless steel probe utilizes multiple sensing points wired in a series-parallel circuit to deliver a true average temperature reading, mitigating the risk of false cycling caused by stratified air or localized hot spots. The integrated \u003cstrong\u003eplastic box (PB)\u003c\/strong\u003e enclosure includes a mounting flange and a vibration-dampening foam pad, streamlining installation for contractors in high-velocity airflow environments.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits for Contractors\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsures accurate \u003cstrong\u003edischarge air temperature\u003c\/strong\u003e monitoring by averaging readings across the entire probe length.\u003c\/li\u003e\n  \u003cli\u003eCompatible with most major \u003cstrong\u003eDDC controllers\u003c\/strong\u003e requiring a \u003cstrong\u003e1000 Ohm RTD\u003c\/strong\u003e input.\u003c\/li\u003e\n  \u003cli\u003eThe \u003cstrong\u003ethree-wire RTD sensor\u003c\/strong\u003e design eliminates errors associated with long cable runs between the duct and the controller.\u003c\/li\u003e\n  \u003cli\u003eRugged stainless steel construction and \u003cstrong\u003erigid averaging mount\u003c\/strong\u003e design prevent probe sagging or mechanical failure in turbulent air streams.\u003c\/li\u003e\n  \u003cli\u003eOptimized for \u003cstrong\u003ezone control\u003c\/strong\u003e and precise environmental management in commercial facilities.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the A\/1K-3W-RA-18-PB the same as the A\/1K-3W-RA-18?\u003c\/strong\u003e\u003cbr\u003e\nYes, the \"PB\" suffix denotes the standard plastic box enclosure, and both part numbers refer to the same 18-inch rigid averaging sensor assembly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this sensor be used in high-moisture environments?\u003c\/strong\u003e\u003cbr\u003e\nWhile the stainless steel probe is moisture-resistant, the plastic box enclosure is designed for standard duct applications; for NEMA 4X requirements, verify if additional sealing or an alternate enclosure type is needed for your specific site conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow does a three-wire configuration improve performance over two-wire setups?\u003c\/strong\u003e\u003cbr\u003e\nThe third wire allows the controller to measure and cancel out the resistance of the lead wires, which is critical for maintaining the accuracy of a \u003cstrong\u003eplatinum RTD\u003c\/strong\u003e over long distances.\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":"Advanced Control Technologies","offers":[{"title":"Default Title","offer_id":35648969868,"sku":"A\/1K-3W-RA-18-PB","price":158.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/1_e65ab302-9340-410b-aefd-d323e26afa78.jpg?v=1615590668","url":"https:\/\/www.gsistore.com\/en-ca\/products\/automation-components-inc-aci-a-1k-3w-ra-18-sensor","provider":"GSIstore","version":"1.0","type":"link"}