The Rosemount 975UR UV/IR Flame Detector senses radiant energy in the short wave section of both the ultraviolet and infrared portions of the electromagnetic spectrum and can detect hydrocarbon-based fuel and gas fires. The signals from both sensors are analyzed for frequency, intensity and duration. Simultaneous detection of radiant energy in both the UV and IR sensors triggers an alarm signal. The UV sensor incorporates a special logic circuit that helps prevent false alarms caused by solar radiation.
Communication Protocol: Optional HART™ communications on the 0-20 mA analog current (FSK) - used for maintenance, configuration changes and asset management, available in mA source output wiring options. RS-485 Modbus compatible communication link that can be used in computer controlled installations
Ambient Temperature: Operating: -76 °F to +185 °F (-60 °C to +85 °C)Storage: -76 °F to +185 °F (-60 °C to +85 °C)
Enclosure Rating: Stainless Steel 316L with electro polish finishHeavy duty copper free aluminum (less than 1%), polyurethane painted
Mounting: Stainless Steel 316L with electro polish finish
Dimensions: Detector 4"x 4.6"x 6.18"(101.6 x 117 x 157 mm)
Weight: Detector (stainless steel 316L) 6.3 lb (2.9 kg)Detector (aluminum) 2.8 lb (1.3 kg)Tilt mount 2.5 lb (1.1 kg)
Certifications/Approvals: ATEX and IECEx:Ex II 2 G DEx db eb op is IIC T4 GbEx tb op is IIIC T110 °C Db(Ta -50°C to +85°C) IP66/68FM/FMCClass I, Division 1, Groups B, C, and D, T4AClass II, III, Division 1, Groups E, F, and G, T4AClass I, Division 2, Groups A, B, C, and D, T4Ta = -50°C to +85°CType 6P, IP66/68 2 m for 45 minutesCSA/US:Class I, Division 1, Groups B, C, and D, T4Class II, III, Division 1, Groups E, F, and G, T4Class I, Division 2, Groups A, B, C, and D, T4Ta = -50 °C to +85 °CType 6P; IP 66/68 2 m for 45 minutesTR CU (EAC):1 Ex db eb op is IIC T4 Gb XEx tb op is IIIC T110°C Db X(–55°C Ta +85°C)Performance:EN 54-10 (VdS)FM 3260Reliability:Designed to meet IEC 61508 - SIL 3 (TÜV)Marine:MED "Wheelmark" (DNV)
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