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24
2023
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05
How the detection alarm works
Source:
Umara Technology
The working principle of the detection alarm:
The smoke moves upwards and reaches the bottom of the ceiling. Smoke detectors detect fires through smoke. Smoke detectors know when you don't see a flame or smell smoke. It works non-stop, 24 hours a day, 365 days a year, without interruption. When calling the police, it makes a screeching and piercing sound until the smoke clears. Ionic sensors work by measuring the balance of positive and negative charges in the air. Inside the sensor, there is a small patch of radioactive material that generates a tiny electrical current in the air flowing in the sensing chamber. On the circuit board, there is a computer chip that monitors this current. When the smoke particles enter the sensing chamber, they disturb the balance of positive and negative charges there, and at the same time change the current. As the smoke gradually increases, the imbalance between positive and negative charges will increase. When this balance reaches a certain limit, the horn will sound.
Key words:
Straight wire drawing machine/water tank wire drawing machine/inverted wire drawing machine/annealing furnace/winding unit/rewinding machine
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