SI45F

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Photon counter

Photon Counter SI45F

Counter SI45F is used in high-speed fire-extinguishing and alarm systems, as well as in burner flame control devices.


Main characteristics

Working voltage

V

280

Working voltage range

V

250 ÷ 300

Own background

count / s

1,0 max

Sensitivity to flame of stearin candle (at a distance of 1m)

count / s

12 min

Sensitivity to bulbs light (10000 lux)

count / s

3,0 max

Sensitivity to diffused sunlight (50000 lux)

count / s

3,0 max

Sensitivity to light of headlights (5000 lux)

count / s

3,0 max

Sensitivity to light of fluorescent lamps (1000 lux)

count / s

3,0 max

Angle of view from the dome

degrees

90

Reduction of sensitivity within the viewing angle

%

35 max

Life expectancy

hour

10000

Weight

g

40

Overall dimensions

Photon counter

Application conditions

The photon counter is designed for use with the schemes of extinction, satisfying the following requirements:

 

Working voltage V 280
Working voltage range V 250 ÷ 300
The time of the discharge combustion in the counter μs 30 max
Limiting pulse repetition frequency count / s 25
Average current through the counter at a speed of accounts 25 count / s μА 0,1 max
Residual voltage at the counter in the period of extinction V 50 ÷ 120

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