Notifier Opal Heat Detectors, NFXI-TDIFF, NFXI-TFIX58, NFXI-TFIX78
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Detailed Description of Notifier Opal Heat Detectors NFXI-TDIFF, NFXI-TFIX58, NFXI-TFIX78
Opal NFXI-TFIX58 & NFXI-TFIX78 are temperature analog addressable sensors that utilize low temperature and microprocessor technology for fast response and linear temperature sensing. Their linear response allows these sensors to be used for temperature signaling in the range of 58°C (Class A1S) to 78°C (Class BS). The NFXI-TDIFF Opal uses the same thermistor and microprocessor technology to give an alarm when the temperature rise exceeds 10°C/min (typical) or if the temperature exceeds the 58°C threshold (Class A1R response). Notifi er's Opal protocol allows it to be software defined as 58°C, units of 78°C, or 58°C at the rate of increase of the device. For backward compatibility and continued approval, the three separate versions continue to be available as separate part numbers. The sensing elements of all three thermal sensors are controlled via the Opal Protocol so that the sensitivity threshold of each element can be changed to customize the device for the changing usage of the area it is protecting. . The detectors have built-in short-circuit isolation and two built-in tri-color LEDs provide a 360° local visual indication of device status. Programmed LEDs with red, amber and green static or flashing status indications are available.
Mechanical Specifications Notifier Opal Heat Detectors NFXI-TDIFF, NFXI-TFIX58, NFXI-TFIX78
• Height: 61mm installed in base B501AP
• Diameter: 102mm installed in base B501AP
• Weight: 88g (excluding base)
• Maximum wire gauge for terminals: 2.5mm2
• Color: White
• Material: PC / ABS
Electrical Specifications Notifier Opal Heat Detectors NFXI-TDIFF, NFXI-TFIX58, NFXI-TFIX78
• Operating voltage range: 15 to 28.5Vdc
• Max. Standby: 200μA @ 24Vdc (no communication) / 300μA @ 24Vdc (LED blinks, every 5 seconds)
• Max. Continuous current: 1A (close the switch)
• Isolation current: 15mA @ 24Vdc
• Red LED current: 3.5mA @ 24VdcGreen: 7.0mA @ 24VdcYellow: 10.5mA @ 24Vdc
• Remote output voltage: 22.5Vdc
• Remote output current: 10.8mA @ 24Vdc
• Additional loop resistance: typ 80mohm @ 24V (max 170mohm @ 15V)
Notifier Opal Thermal Detectors Environmental Specifications NFXI-TDIFF, NFXI-TFIX58, NFXI-TFIX78
• Temperature range: -30°C to +70°C
• Humidity: Relative humidity 10 to 93% (non-condensing)
• IP Rating: IP20 when installed in B501APIP23 base when installed in WB-1AP base
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