Difference between heat detector and smoke detector
Heat detector vs Smoke detector:
With the evolution of the world, a lot of new equipment has come into use. People develop new concepts and models. The culmination point of developing new concepts and models would be transforming them into real creations. New technical equipment, new electrical equipment and many other types of discoveries are introduced to the world. Heat detector and smoke detector are two such technical equipments that are designed to detect some sort of substance. The difference between them lies in the fact that the substance they detect. However different a hear detector and a smoke detector could be, some people still get confused over distinguishing between them. Hence, this article tries to get to those confused minds by briefly accounting on heat and smoke detectors separately and then by presenting the dissimilarities between the two types of detectors.
What is a heat detector?
First, let us see what a heat detector is. Simply, s heat detector is a fire alarm device. It is designed to respond in a situation where the thermal energy of a fire boosts the temperature of a heat sensitive element. That is to say, when some element or thing which reacts quickly to heat; in other words ‘heat sensitive’, increases its temperature due to the thermal energy of a fire, that is exactly when a heat detector is designed to respond. Since it is an alarm device, when the device detects the described thermal energy of fire, it starts to rings. Further, the rate flow into the element is generally regulated by the conductivity and the thermal mass of the element. The heat detectors can be divided into two based on their operation. One classification would be ‘rate-of-rise’ and the other would be ‘’fixed temperature’. The fixed temperature heat detector is the most common type of heat detector. They operate when the eutectic alloy which is heat sensitive reaches the eutectic point changing state from a solid to a liquid. It is noted that the most common fixed temperature point for electrically connected heat detectors is 136.4°F (58°C). On the other hand, the rate-of-rise heat detector functions on a swift rise in element temperature of 120° to 150°F (67° to 83°C). That is to say, this type of heat detectors operates at a lower temperature fire situation. Finally, heat detectors are used in household environments as well as commercial settings.
What is a smoke detector?
Next, what is a smoke detector then? A smoke detector, unlikely the heat detector which detects the heat, is a device that detects smoke. That is to say, a smoke detector recognizes smoke and indicates fire. Smoke detectors when used in household environments are known as smoke alarms that release an alarm which is both audible and visual from the detector. Yet, smoke detectors which are commercial and industrial issue a signal to a fire alarm system and are powered by a central alarm system. On the other hand, smaller smoke alarms which are utilized in the households are usually powered by a disposable battery. In addition, a good number smoke detectors function either by optical detection or by physical process. Some other smoke detectors use both detection methods. Moreover, smoke detectors are generally three typed based on design: An optical smoke detector, an ionization smoke detector, and an air-sampling smoke detector. To briefly account on these three smoke detector designs, an optical smoke detector is a light sensor and that means it uses a small light such as an incandescent bulb or infrared LED. And an ionization smoke detector is a smoke detector that uses a radioisotope to produce ionization in air. These smoke detectors are more sensitive fire than optical detectors. Finally, it is noted that an air-sampling smoke detector is capable of detecting microscopic particles of smoke.
What is the difference between a heat detector and a smoke detector?
Well, then what is the difference between a heat detector and a smoke detector? There are similarities, of course. The major similarity between the two would be that both are used in either commercial or residential environments to prevent catastrophe from fire. The major difference between a heat detector and a smoke detector would be that the heat detectors sense slight changes in temperature and they go off to indicate potential fire alarm. Smoke detectors on the other hand sense the incidence of smoke in the environment whether it is at commercial premises or at a household. Smoke detectors go off quickly once they sense even a slight occurrence of smoke. Moreover, the technology both these devices use is different. Heat detectors use the electro-pneumatic technology while the smoke detectors utilize ionization and photoelectric technologies. Further, it is acknowledged that heat detectors are most reliable than smoke detectors as the potential of them indicating false alarms of fire is less. In addition, it must be noted that heat detectors do not ring an alarm in the presence of smoke and the smoke detectors do not sound alarm in the event the heat or the temperature level is increased. That means, they are not designed to substitute for each other. To conclude, as the two devices do not substitute for each other, the users tend to employ both devices to indicate presence of smoke and to prevent any mishap of fire.