FIELD: industrial automation. SUBSTANCE: fire alarm using interconnected and forming a closed circuit relay 1, fire alarm sensors 2, adjusting resistor 3 and control resistor 4, whose leads are connected to the power source via resistors 5, 6 of the voltage divider, and control switch 7, as well as alarm element 8 connected to the power source via the make contact of relay 1, is additionally provided with excessive heating alarm element 9, and relay 1 is made polarized with a biased adjustment. EFFECT: enhanced functional reliability. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FIRE SIGNALLING DEVICE | 1991 |
|
RU2024947C1 |
| FIRE ALARM DEVICE | 1991 |
|
RU2039379C1 |
| FIRE WARNING DEVICE ON TRANSPORTATION FACILITY | 1991 |
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RU2020593C1 |
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SU669373A1 |
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|
SU1378862A1 |
