The DA-600S-Catalytic is a smart gas detector/transmitter designed for detecting combustible gases, particularly hydrocarbons, using a catalytic sensing principle. The sensor operates by generating heat during gas oxidation, where combustible gases react with oxygen, causing a temperature change that is converted into an electrical signal via a Wheatstone bridge circuit. The device features a 2.4-inch TFT LCD display that shows real-time gas concentration and status information, along with RGB LED indicators for visual alerts. It supports auto-sampling using an internal micro-pump, enabling continuous gas detection even in difficult installation environments. Designed for hazardous environments, the detector has an explosion-proof structure and supports multiple communication outputs including 4–20 mA analog, RS485 Modbus, and relay outputs. It measures combustible gases in the range of 0–100% LEL and operates reliably under harsh environmental conditions.
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