Field Instruments

General

The Opal multi-criteria, multi-sensor, photo, thermal and infra red (SMART3) detector is the environmentally friendly alternative to the ionisation detector, a technology that is now over sixty years old. The SMART3 offers comparable speed of response to the ionisation technology for a fast flaming fi re and is less susceptible to false alarms. It can be deployed with confidence in locations where the main risk is from fast-developing flaming fires.

SMART3 moves the goal posts in the fight against false alarms in the core detector space by delivering enhanced false alarm immunity. In addition to being an effective alternative to ionisation units, SMART3 offers better performance over the alternative technologies of dual angle or dual wavelength optical detectors and photo-thermal detectors. The integration of continual monitoring for all three major elements of a fi re enables the Opal NFX-SMT3 to respond far more quickly to an actual fi re and has the highest immunity to nuisances. Based upon the sensor signals, the program dynamically changes sensor thresholds, sensor gain, time delays, combination, sampling rates, averaging rates and, if any sensor fails, changing sensitivity of the remaining sensors as well as indicating a fault condition.

The sensing elements of the Opal NFX-SMT3 are panel controllable so the sensitivity thresholds of each element can be changed by the panel offering the ability to customize the device for the changing use of the area it is protecting. The detector has two integral tri-color LEDs that provide 360° local visual indication of the device status. The LEDs are programmable with static or blinking red, amber and green status indications available.

Features:

• Built in short circuit isolation
• New advanced Opal protocol allows mapping of the loop for precise fault location using isolators
• Tri colour LED offering red, green and amber colours
• Rotary decade address switches
• Pure white colour to complement modern buildings
• 100% mechanical and electrical backwards compatibility
• Base designed to ease installation and wiring

Specifications

• Make : Notifier By Honeywell
• Model: NFX-SMT3
• Operating Voltage Range:  15 to 32Vdc
• Remote Output Voltage: 22.5Vdc
• Remote Output Current: 10.8mA @ 24Vdc
• Additional loop resistance  using the B501AP:  typ 20 mohm (max 30 mohm)
• Height: 61mm installed in B501AP base
• Diameter:  102mm installed in B501AP base
• Weight:   99g (inc base)
• Max Wire Gauge for  Terminals:  2.5mm2
• Colour:   White  
• Material:   PC/ABS

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