How does infrared fire sensor work?
Infrared flame sensors are designed to work within the infrared spectral band. When an explosion occurs, certain hot gasses will emit patterns in the infrared region, which can then be analysed using a specialised thermal imaging camera.
How does the Triple IR flame detector work?
The basic principle of operation for a multi spectrum IR detector is; The detector has three sensors, each sensitive to a different frequency of radiation. The IR radiation emitted by a typical hydrocarbon fire is more intense at the wavelength accepted by one sensor than the other two.
What is IR flame sensor?
The IR flame sensor is used to detect the presence of fire or other infrared source (Flame or a light source of a wavelength in the range of 760 nm to 1100 nm can be detected). It can be used in fire fighting robot or heat seeking robot.
How do you detect fire sensors?
When smoke enters the optical chamber into the path of the light beam, some light is scattered by the smoke particles, and some of the scattered light is detected by the sensor. An increased input of light into the sensor sets off the alarm.
Which type of sensor is most suitable for detecting fire?
Photoelectric sensors are the least costly and are employed widely in residential and other fire alarms. They comprise a light source, typically an IR LED and a photodetector, usually a photodiode, together with simple signal processing electronics (Figure 1), housed in a plastic enclosure.
How did you detect fire which sensor is suitable Mcq?
An optical smoke detector is one that detects smoke by using light sensors (infrared LED). When smoke particles pass thru the chamber of the optical detector, it scatters light that triggers the alarm. A red or blue tag is usually used on a fire alarm system that does not meet applicable codes and standards.
Which type of sensor is used in a smoke detector?
Smoke detector types A photoelectric detector senses sudden scattering of light when smoke enters the detector chamber, triggering the alarm. Photoelectric smoke detectors respond an average of 15 to 50 minutes faster to fire in its early, smouldering stage, before it breaks into flame, than ionisation alarms.
Why is running a bad idea when your clothes are on fire?
Assuming that the clothes that are on fire are bring worn by you, and that you are not standing in a puddle of gasoline, what you should do is Stop, Drop, and Roll to extinguish the fire. Running will give more oxygen to the fire and very likely make it more intense and injurious.
What should you not do during a fire?
10 things not to do in a fire
- Don’t install smoke alarm detectors.
- Pop upstairs to retrieve heirlooms, passports and pets.
- Open doors that have smoke billowing from the joints.
- Throw water on a chip pan fire.
- Try and escape using a Lift.
- Jump from an upstairs window.
- Hide in a cupboard or under the bed.
- Smoke cigarettes in bed.
What is the first thing you do when you see a fire?
Remember to GET OUT, STAY OUT and CALL 9-1-1 or your local emergency phone number. Yell “Fire!” several times and go outside right away. If you live in a building with elevators, use the stairs. Leave all your things where they are and save yourself.