Smoke Detector Singapore
Function of the Smoke Detector?
This is a life-saving equipment one must not omit. In an event of a fire, how would you be alerted if you are sound asleep or the fire occurs in your living room while you are sound asleep in your bedroom? The Smoke Detector is a device that is installed on the ceiling of the most building to detect smoke and produces an alarm to alert you when a fire occurred.
From June 2018 all-new single-storey need to install one device in the living room. Multiple storeys home need one device on each floor. Those with combined living and dining room with more than 70 sqm need at least two. Home-owner may at their own discretion install additional smoke detectors but should not install in the kitchens and toilets where the smoke and steam from cooking or bathing could cause false alarms.
In a fire episode, there are commonly a bigger number of setbacks who experience the ill effects of smoke inhalation than from burns. On the off chance that you are in a smoke-logged room
- Cover your nose and mouth with a wet material and abstain from breathing in through the mouth
- Get down, keep near the ground and creep towards the purpose of escape under the smoke
Types of Smoke Detector
The smoke detector will identify most of the flames more quickly than the heat detector. There are three types of smoke detector innovation: Ionization, Photoelectric and combination of Ionization/Photoelectric.
The Ionization-type of smoke detector has a small amount of radioactive material between two electrically charged plates. These ionizes the air and results in the current to flow between the plates. When the smoke enters the chamber, it upsets the flow of ions which in turn causes a reduction in the flow of current and activating the alarm.
Double sensor smoke detector utilizes both Ionization and Photoelectric smoke discovery innovation. It is the best choice to utilize. The photoelectric smoke detector utilizes the rule of reflected or scattered light to sense the nearness of visual smoke.
How to test the smoke detector?
Press and hold the test catch on the smoke detector. It takes a couple of moments to start, yet a boisterous, ear-puncturing siren ought to exude from the smoke indicator when the catch is squeezed. In the event that the sound is frail or non-existent, the batteries are feeble and require substitution.
Most detectors introduced today have a life expectancy of around 8-10 years. After this time, the whole unit ought to be supplanted. It is a smart thought to compose the date of procurement with a marker within your alert so you will know when to supplant the batteries.
Take care of your smoke detector according to the manufacturer’s instructions.
Specifications of Smoke Detector:
Wireless Smoke Detector (Alarm)
A wireless smoke detector (alarm) is a self-contained electronic device that has a means of detecting smoke (the smoke sensor) and a means of giving an audible alarm (the alarm or sounder or buzzer). This type of smoke alarm is battery operated and can install easily. The wireless smoke alarm is suitable for installation in the HDB units and private residential estates. By sensing smoke in the early stages of a fire and sounding a loud warning alarm, a smoke alarm gives an early warning of fire and buys you those precious few minutes for you and your family to get out of the house safely.
• Computer-designed non-directional smoke chamber
• 360° view of detector status LED
• Low profile, 2″ high (with base)
• 2 or 4 wire base compatibility, relay bases available
• Highly stable operation, RF/Transient protection
• Low standby current, 59μA at 24VDC
• One built-in power/sensitivity supervision/alarm LED
• Automatic Sensitivity window verification function. Inspection, Testing and Maintenance
• Magnetic Test Feature
Photoelectric Smoke Detector
The Photoelectric Smoke Detector is high quality and reliable. It can be used in all areas where Photoelectric Smoke Detectors are required. The computer-designed smoke chamber makes it well suited for detecting smouldering fires as well as fast-flaming fires.
- New Chamber design to reduce unwanted alarms
- Flat response smoke chamber
- Small mesh size prevents ingress of insects
- Fully compatible with existing conventional panels
- Twin alarm LEDs on the head for 360o viewing
Beam Smoke Detector
The Beam Smoke Detector utilises a near infra-red beam to detect the presence of smoke which is pulsed to reduce the overall current consumption and improve the noise rejection characteristics. This beam type is suitable for hearing-impaired people.
- 5-100m range
- Powered directly from the zone
- Fully line continuity options
- Latching or Non-Latching fault option
- Automatic contamination compensation
- Automatic signal strength adjustment
- Approved by LPCB (The Loss Prevention Certification Board)
Ionisation Smoke Detector
It has a responsive and highly stable operation that give it an extremely wide range of uses. It can be used in areas where early warning of trouble from super-heating or flaming combustibles is expected.
- Enhanced performance – Incorporate a single radioactive source and dual chambers for stable operation even under extreme environmental conditions (include atmospheric changes)
- Modern low profile design
- Twin LED indicator lamp
- Low current consumption
- Improved noise immunity
- Custom designed steel mesh
To reset a hardwired unit with a battery backup, perform the following steps:
1 Turn off the power to the smoke alarm
2 Remove the smoke alarm from the mounting bracket and disconnect the power
3 Insert the battery into the battery compartment
4 Press and hold the test button
Many homes are installed with battery-operated smoke detectors. This means that it is critical to test your smoke detector monthly to ensure it still functions properly. Never remove the batteries in an attempt to terminate the alarm for your convenience. It is too easy to forget to replace them, thus causing a deadly situation in your home.
Good News for Hearing-impaired
Some recent developments have resulted in the smoke detector even more effective, for example, it uses a strobe light alarm to alert hearing-impaired people of danger. The remote strobe light can be mounted in a bedroom even though the detector may be located in another room or hallway, giving the same effect of early warning available to hearing people when an alarm sounds from outside the bedroom.
Limitations of Smoke Detector
The basic function of the smoke detector to scan the surrounding air for changes in temperature and smoke to determine if there is fire. The smoke from cigarette and cooking can cause the smoke detector to generate the alarm, regardless the battery operated or hard-wired type of detector. Under this situation, a false alarm occurred. The next time the bell rings, occupants may take it to be the false alarm when a real situation of fire does happen. Fatal home fires can arise from the wrong signal as perceived by occupants, absent or non-working of the detector. Though the detector is life-saving equipment, it also has some limitations.
Contrary to hard-wired Smoke Detector, the dead battery of the battery operated Smoke Detector saves no lives. Regular testing and monitoring of the battery to ensure efficient function of the detector.
The two types of smoke detector, namely ionization and photoelectric, have their advantages and disadvantages. Ionization Detector is more responsive to high flames fires. Due to the limitation in technology, the Photoelectric Detector is efficient in sending an alert when sensing smoke from slow-burning smouldering fires.
Smoke detectors installed too close to bathrooms or kitchen trigger false alarms when steam interrupts the light beams or electrical currents inside smoke detectors.
High dust areas such as workshops, wooden furniture manufacturing factory can trip the sensors inside smoke detectors, resulting in false alarms.
The kitchen is more prone to fire. By installing smoke detectors near stoves, toasters or toaster ovens can cause false alarms. Heat detectors, which sound alarms based on sharp temperature change, are worthy substitutes in such areas.
How to stop the Smoke Detector from Beeping incessantly?
Change the battery as it is weakening. If you change the battery and still hear chirping, make sure you installed the battery correctly.
If the smoke alarm still beeps after you change the battery, hold down the test button to reset the alarm and clear the battery failure from its memory.
Use a vacuum attachment or a can of compressed air to blow away any dust or dead insects from the fire alarm sensor. Vacuuming twice a year clears away spiderweb or dust that can cause smoke alarm chirping.
Adjust the temperature of your home if your smoke detector is chirping at regular intervals, but only at certain times. Your smoke detector may chirp if it thinks your house is too hot or too cold.
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