IR3 Flame Detector Flameproof Ex d

IR3 Flame Detector Flameproof Ex d

  • Suitable for explosive areas of the zones 1, 21, 2 and 22 (ATEX and IECEx certified)
  • Sensitivity according to EN 54-10Class 1: 0.1m² flames at 25m
  • Low risk of false alarms due to different IR wavelengths and a combination of filters and signal processing techniques
  • Reliable operation, even if the lens is contaminated by a layer of oil, dust, water-vapour, or ice
  • Selectable response time
  • 2-wire or 4-wire configuration via DIP switch settings

Flame detectors are used to detect open flames indoor and outdoor. They respond to the light emitted from flames during combustion. Flame detectors are especially suitable for smokeless liquid and gas fires not visible for the naked eye as well as for fires of materials that contain carbon with strong smoke emission. Typical areas of application are large industrial warehouses, airplane hangars, chemical facilities, oil refineries, machine rooms, ferries and freight ships, power plants, printing plants, wood warehouses, subway tunnels. Flameproof equipment is contained in an enclosure so strong that an internal explosion will neither damage the enclosure nor be transmitted outside of it. The surface remains cool enough not to ignite the explosive mixture.

   
Detector (W x H x D) 146 x 150 x 137mm
Cable gland entries 3 x 20mm
   
Terminal functions  
1 – 2 Supply in connections or 2-Wire connections +IN and -IN
3 – 4 Remote test input connections +R and -R
5 – 6 Alarm Relay RL1 connections
7 – 8 Fault Relay RL2 connections
Operating voltage 14 to 30V DC
Current consumption, 2-Wire configuration  
Standby 4mA
Alarm 20mA
Current consumption, 4-Wire configuration  
Standby 8mA
Alarm 20mA
   
Housing material Copper Free Aluminium Alloy(LM25)
Housing color Red
Weight 2.5kg
Protection category (EN 60529) IP66
   
ATEX Ex II 2GDEx d IIC T4 Gb Ex tb IIIC T135℃ DbIP66A21
IECEx Ex d IIC T4 Gb Ex tb IIIC T135℃ DbIP66A21
   
Permissible operating temperature -10 to +55°C
Permissible storage temperature -20 to +65°C
Relative humidity 95%, no condensation
   
Detection principle Detection of low frequency (1 to 15Hz) flickering infrared radiation
Operating wavelength band 0.75 to 2.7µm
Detection area 90° cone
Sensitivity High (Class 1 ) and Low (Class 3 )
Range Class 1: 0.1m² n-heptane at 25m Class 3: 0.1m² n-heptane at 12m