{"product_id":"90dm4dtnetcrd50000","title":"Vulcain 90DM4DTNETCRD50000 Monitor","description":"\u003cp\u003eThe \u003cstrong\u003eVulcain 90DM4DTNETCRD50000\u003c\/strong\u003e is an industrial-grade \u003cstrong\u003einfrared CO2 gas monitor\u003c\/strong\u003e engineered for high-precision \u003cstrong\u003educt mount CO2 detection\u003c\/strong\u003e in complex commercial HVAC systems and building automation environments. Utilizing professional \u003cstrong\u003edual-wavelength NDIR sensor\u003c\/strong\u003e technology, this unit effectively mitigates drift and compensates for temperature fluctuations to maintain baseline stability over time. Specifically designed for air-handling units, the \u003cstrong\u003e90DM4DT series\u003c\/strong\u003e features an airtight, lightweight ABS enclosure that facilitates accurate carbon dioxide sensing within airflow velocities ranging from 500 to 4,000 ft\/min. This model is configured with a \u003cstrong\u003e0-50,000 ppm (0-5%) detection range\u003c\/strong\u003e and supports \u003cstrong\u003eModbus RTU RS-485\u003c\/strong\u003e networking alongside standard \u003cstrong\u003e4-20 mA output\u003c\/strong\u003e for seamless integration into a \u003cstrong\u003eBMS (Building Management System)\u003c\/strong\u003e. Field-serviceable features include a menu-driven calibration process and an optional backlit display for real-time diagnostics. For optimal airflow sampling, install the unit on a straight duct section at least three feet from any elbows or transitions. Reliable \u003cstrong\u003e24 VDC power supply\u003c\/strong\u003e input ensures consistent performance for critical indoor air quality monitoring and demand-controlled ventilation (DCV) strategies.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits for Contractors\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced NDIR Technology:\u003c\/strong\u003e Employs infrared dual sensing to provide high-accuracy CO2 monitoring with superior long-term stability and minimal maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBMS Integration:\u003c\/strong\u003e Ready for modern building protocols with \u003cstrong\u003eModbus RTU\u003c\/strong\u003e communication and configurable \u003cstrong\u003eanalog 4-20 mA\u003c\/strong\u003e signaling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Duct Sampling:\u003c\/strong\u003e The DT-type housing is engineered specifically for return or supply air ducts, ensuring the sampling tubes capture a representative cross-section of the air stream.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Environmental Tolerance:\u003c\/strong\u003e Designed to operate reliably in temperatures from -10°C to +50°C and humidity levels up to 95% RH.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContractor-Friendly Installation:\u003c\/strong\u003e Lightweight design with a convenient mounting bracket and airtight seals to prevent air bypass in pressurized systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions for 90DM4DT\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the recommended airflow velocity for accurate readings?\u003c\/strong\u003e\u003cbr\u003e\nFor peak performance, this duct-mounted monitor should be installed in locations with an airspeed between 500 and 4,000 feet per minute.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the output signal be scaled in the field?\u003c\/strong\u003e\u003cbr\u003e\nYes, the 4-20 mA and digital outputs are field-configurable via the internal programming menu to align with your specific 50,000 ppm (5%) scaling requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this unit require a specific orientation in the duct?\u003c\/strong\u003e\u003cbr\u003e\nThe insertion tubes must be oriented so that the lateral air holes face directly into the airflow (look for the \"Flow\" indicator on the sampling tube).\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":"Vulcain","offers":[{"title":"Default Title","offer_id":35651581388,"sku":"90DM4DTNETCRD50000","price":264.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/vulcain-90dm4dtnetcrd50000-monitor-10_7aa2536e-1cad-4134-a86f-a5375595d9bb.jpg?v=1496450824","url":"https:\/\/www.gsistore.com\/en-ca\/products\/90dm4dtnetcrd50000","provider":"GSIstore","version":"1.0","type":"link"}