D284 Ultraviolet flame detector, 24V

D284 Ultraviolet flame detector, 24V

  • Highly reliable, long-lasting ultraviolet (UV) receptor tube
  • Low power consumption
  • Can be mixed with other detector types on the control panel's initiation detection circuit (IDC)
  • Easily maintained; can be cleaned without disassembly

The D284's response depends on both the size of the fire and the distance from the fire to the detector; therefore the effective coverage area varies. Very small fires must have a duration of at least 7 sec if within 12 ft (3.7 m) of the detector and a duration of 30 sec if within 12 ft to 25 ft (3.7 m to 7.6 m) of the detector.

 
Relative Humidity: up to 95%, non-condensing at +104°F (+40°C)
Temperature (operating): +14°F to +122°F (-10°C to +50°C)
   
Color: Ivory
Dimensions (diameter x H) 4 in. x 2 in. (10.2 cm x 5.1 cm)
Material: ACS plastic (acrylonitrile-chlorinated PE-styrene)
   
Contact Rating: 260 mA at 24 VDC
   
Current  
Alarm: 0.25 mA at 24 VDC
Standby: 0.2 mA at 24 VDC
Voltage (operating)  
Nominal: 24 VDC
Range: 17.6 VDC to 27.7 VDC
   
Detection Angle: 120° conical
UV Sensitivity: 185 nm to 300 nm