{"product_id":"patterson-kelley-26-0000-0039","title":"Patterson-Kelley 26-0000-0039 Sensor","description":"\u003cp\u003eThe \u003cstrong\u003ePatterson-Kelley 26-0000-0039 Sensor\u003c\/strong\u003e is a precision-engineered \u003cstrong\u003eNTC thermistor\u003c\/strong\u003e designed for high-accuracy thermal monitoring in commercial hydronic systems. This \u003cstrong\u003etemperature thermistor sensor\u003c\/strong\u003e is a critical component for the \u003cstrong\u003eENVI boiler control\u003c\/strong\u003e platform, providing the real-time data necessary for modulation and setpoint management. It is primarily utilized as a \u003cstrong\u003esupply and return sensor\u003c\/strong\u003e for the \u003cstrong\u003eP-K MACH condensing boiler\u003c\/strong\u003e series (specifically models C300 through C1050 and C1500VC200) as well as flue gas monitoring applications. The \u003cstrong\u003e26-0000-0039\u003c\/strong\u003e \u003cstrong\u003ecommercial boiler part\u003c\/strong\u003e features a \u003cstrong\u003enegative temperature coefficient\u003c\/strong\u003e, where resistance decreases as the temperature rises, allowing the controller to detect fluctuations within a fraction of a degree. Built with \u003cstrong\u003eindustrial-grade construction\u003c\/strong\u003e, it maintains signal integrity in high-vibration and high-temperature environments. Ensuring this sensor is calibrated and free of resistance drift is essential for preventing short-cycle issues and ensuring the system maintains peak \u003cstrong\u003ehydronic heating efficiency\u003c\/strong\u003e. For technicians, verifying the resistance curve against the P-K service manual is the standard procedure for diagnosing potential \"Open Sensor\" or \"Shorted Sensor\" error codes on the ENVI display.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Precision:\u003c\/strong\u003e Direct \u003cstrong\u003ereplacement temperature sensor\u003c\/strong\u003e designed specifically for \u003cstrong\u003ePatterson-Kelley MACH\u003c\/strong\u003e and \u003cstrong\u003eMODU-FIRE\u003c\/strong\u003e systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application Range:\u003c\/strong\u003e Compatible for use as a \u003cstrong\u003ewater temperature sensor\u003c\/strong\u003e in supply, return, or flue gas monitoring positions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Modulation:\u003c\/strong\u003e Provides the \u003cstrong\u003eENVI controller\u003c\/strong\u003e with accurate data to optimize fuel-to-air ratios and firing rates.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Durability:\u003c\/strong\u003e Engineered for \u003cstrong\u003eindustrial HVAC temperature monitoring\u003c\/strong\u003e with thermal-shock resistant materials.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Integration:\u003c\/strong\u003e Standardized lead lengths and connector types simplify field \u003cstrong\u003eHVAC sensor replacement\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eWhat error codes indicate a faulty 26-0000-0039 sensor?\u003c\/strong\u003e\u003cbr\u003e\nOn the \u003cstrong\u003eENVI control\u003c\/strong\u003e panel, an open circuit typically displays 14°F or a specific \"Open Sensor\" block, while a shorted sensor often defaults to a value of 244°F. These readings indicate the sensor or its wiring has failed and requires immediate attention to restore boiler operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this sensor compatible with all P-K MACH models?\u003c\/strong\u003e\u003cbr\u003e\nThis \u003cstrong\u003ethermistor sensor\u003c\/strong\u003e is commonly used on the \u003cstrong\u003eMACH C300-C1050\u003c\/strong\u003e for supply, return, and flue gas, and on the \u003cstrong\u003eC1500\u003c\/strong\u003e for return sensing. Always verify the specific terminal location and application in your unit's technical manual.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I test the 26-0000-0039 with a multimeter?\u003c\/strong\u003e\u003cbr\u003e\nYes, by measuring the resistance across the sensor leads and comparing the Ohms to the \u003cstrong\u003eNTC resistance chart\u003c\/strong\u003e provided by Patterson-Kelley for the corresponding ambient or water temperature.\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":"Patterson-Kelley","offers":[{"title":"Default Title","offer_id":43381698494642,"sku":"26-0000-0039","price":70.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_76a0783c-d8ee-4ec0-ac6f-d2b89242e4c0.png?v=1698703531","url":"https:\/\/www.gsistore.com\/products\/patterson-kelley-26-0000-0039","provider":"GSIstore","version":"1.0","type":"link"}