SI45F
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Photon counter
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 |
2,0 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
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 |