{"product_id":"780248-honeywell-analytics-gas-sensor-ammonia-nh3-detection-module","title":"780248 Honeywell Analytics Gas Sensor – Ammonia NH3 Detection Module","description":"\u003ch3\u003eTechnical Overview: 780248 Infrared Ammonia Gas Sensor\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e780248\u003c\/strong\u003e by \u003cstrong\u003eHoneywell Analytics\u003c\/strong\u003e is a high-precision infrared non-dispersive gas sensor specifically engineered for ammonia (NH3) detection. This unit integrates advanced sensing technology with a flexible sampling architecture, providing reliable gas concentration monitoring across a range of 9-100 ppm.\u003c\/p\u003e\n\n\u003ch3\u003eOperational Specifications\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 780248\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSensing Technology:\u003c\/strong\u003e Single-pass, infrared non-dispersive\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGas Detected:\u003c\/strong\u003e Ammonia (NH3)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 24 VDC (-15% to 10%) @ 208 mA\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 3 alarm relays (1A @ 30 VDC \/ 0.5A @ 125 VAC) \u0026amp; 4-20 mA @ 250 Ω\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e Modbus\/TCP\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eResponse Time:\u003c\/strong\u003e 2 to 30 seconds (variable by sample tube length)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnclosure Rating:\u003c\/strong\u003e NEMA 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGlobal PLC Spare HUB's Technical Insight\u003c\/h3\u003e\n\u003cp\u003eAt \u003cstrong\u003eGlobal PLC Spare HUB\u003c\/strong\u003e, we recognize the \u003cstrong\u003e780248\u003c\/strong\u003e for its superior linearity (±2%) and repeatability in challenging industrial environments. Its reliance on infrared technology—rather than traditional electrochemical sensors—significantly reduces cross-sensitivity issues. For ammonia-heavy applications, the inclusion of local peak-level tracking and Modbus integration makes this an essential diagnostic tool for preventive maintenance and site safety compliance.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Scenarios \u0026amp; Diagnostic Capability\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCold Storage \u0026amp; Refrigeration:\u003c\/strong\u003e Monitoring ammonia leaks in large-scale cooling plants.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eChemical Processing:\u003c\/strong\u003e Real-time detection in ammonia synthesis and storage areas.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHVAC Systems:\u003c\/strong\u003e Ensuring air quality in industrial ventilation circuits.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDiagnostic Features:\u003c\/strong\u003e The 4-digit display allows for instant on-site verification of current vs. peak gas levels, while the three programmable alarm levels facilitate robust interlock integration with emergency ventilation systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLogistics \u0026amp; Service Excellence\u003c\/h3\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExpress Global Shipping:\u003c\/strong\u003e Reliable, fast transit via \u003cstrong\u003eFedEx, UPS, and DHL\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuality Commitment:\u003c\/strong\u003e Every unit is backed by our \u003cstrong\u003e12-month operational warranty\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation Versatility:\u003c\/strong\u003e Ships with a 10-foot sampling tube (expandable to 100 ft) for remote monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProfessional FAQ \u0026amp; Selection Guide\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the infrared non-dispersive sensing technology in this model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Unlike electrochemical sensors that degrade over time when exposed to high ammonia concentrations, this infrared sensor provides long-term stability and faster response times, making it ideal for environments where high background gas levels are common.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does the sampling tube length affect the response time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The response time scales linearly with the length of the sampling tube. While you can extend the tubing up to 100 ft (30 m), keeping it closer to the 10 ft factory default is recommended for applications requiring an emergency shutdown response under 5 seconds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I integrate this sensor directly into my existing PLC network?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The 780248 includes a Modbus\/TCP communication protocol, allowing it to act as a slave device on your facility's Ethernet network for centralized monitoring and data logging.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How should I calibrate the 780248 for high-precision requirements?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We recommend using certified ammonia calibration gas kits annually. Because this sensor measures non-dispersive infrared light, ensure the internal optical cell is kept free of dust and moisture, as contaminants can cause signal drift over time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What does the NEMA 1 rating imply for my installation environment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The NEMA 1 rating indicates the unit is designed for indoor, general-purpose use. If your installation area has high dust or direct water spray, ensure the unit is mounted within a secondary protective cabinet while maintaining airflow for the sampling intake.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45219290677430,"sku":"780248","price":103.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/780248.jpg?v=1782378657","url":"https:\/\/www.plcsparehub.com\/products\/780248-honeywell-analytics-gas-sensor-ammonia-nh3-detection-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}