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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

¾ “ 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