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Optical sensor Technology

IR versions: Si photodiode Spectral   response peak @ 920nm
  IR versions: Si photodiode Spectral response peak @ 920nm
  VL versions: Si photodiode Spectral response peak @ 560nm
  UV versions: SiC photodiode Spectral response peak @ 280nm
  UVIR version: Si + SiC photodiode1 Spectral response peak @280nm and 920nm
  1 Si and SiC photodiodes signals can be processed individually or both   combined as per burner opertion

Power supply voltage

24VDC (-25%, +20% = 18 ÷ 29VDC )

Power supply current

150mA typical,

Power consumption

3.6W typical, 4W max

Inrush current

6A peak, 2ms settling time

Flame Relay
  Safe Relay

Contacts: 1 NO, for each relay
  240 VAC / 1.5A   cycles ≥ 100,000
  240 VDC / 100 mA
   30 VDC / 300mA
  Minimum load 10mA, 5VDC

FFRT

Flame Failure Response Time: 0.2s   to 4s

Analog output (4-20mA)

4÷20 mA (R load <= 500Ω)
  Galvanically isolated
  Precision: +/-5% f.s

Digital Inputs, 24 VDC

Nr. 2 digital inputs (opto   coupled), to allow selection of one out of four different sets of parameters;   return signal common to both inputs.
  Nominal voltage 24VDC (5 mA typical)
  Max Voltage 36 VDC
  Off: < 5 VDC
  On: > 18 Vdc

Communication ports

Two, redundant, RS-485 serial   channels configurable in Profibus or Modbus protocols.
  Profibus: max speed 12 Mbit/s
  Modbus: max speed 115.200 bit/s

Local configuration interface

4 push buttons (UP, DOWN , LEFT,   RIGHT)
  3-digits LED display

Air source for lens cleaning

From clean ambient air

Air flow for lens cleaning

LOS (Line Of Sight) versions: 115   l/min (4 SCFM)
  Excessive contaminants might require a flow up to 400 l/min (14 SCFM)
  FOC (Fibre Optic Cable) versions: 400 l/min (14 SCFM)

Minimum cleaning air pressure

LOS (Line Of Sight) versions: 20mm   H2O (1” W.C.) above the max wind box pressure measured at the “Y” connection   inlet.
   FOC (Fiber Optic Cable) versions:   400mm H2O (12” W.C.) above the max wind box pressure measured at the “Y”   connection inlet.

Maximum fibre optic continuous
  operating temperature

482° C (900° F) for VL and IR   fiber optic cables
  350° C (662° F) for UV and dual sensor UVIR fiber optic cable

Housing mounting thread

1” NPT male

Cable entry thread

? “ NPT female (N/A for   connectorized versions)

Electrical connections
  (terminal versions)

Removable terminals with screws
  Allowable cable section:
  AWG24-AWG12, 0.2-2.5mm2 for Relay contacts (J1 connector)
  AWG 28-AWG16, 0,08-1.5mm2 for all other terminals