Different ranges of Sirens
1. Used in conjunction with the gas appliance
This is the Sirens with gas appliances such as gas water heaters, cookers, hoods and other connection to use, when there is gas leak, the Sirens action sound and light Sirens, while the output electrical signal. If the exhaust hood, then connected to the exhaust hood power, out of the leakage of gas, such as with the water heater or cooker connection, then by connecting the solenoid valve connected to the solenoid valve to achieve the role of cutting gas. There is also a siren is directly connected with the gas meter, when the Sirens is through the gas meter in the solenoid valve action to achieve the role of cutting off the gas
2. Apartment building centralized control
This is the most typical application of the Sirens in civilian use, as long as the residential building with a building manager can be used in this way. The Sirens is installed in each residential unit, through the output connected to the duty room of the centralized monitoring disk, once a unit gas leak occurs, the Sirens immediately action and output signal.
3. Used alone
This is the easiest way to use the Sirens, when the combustible gas leak reaches a certain concentration, the Sirens sound and light Sirens, this Sirens requires someone to take immediate measures to manually cut off the gas source.
Electric Sirens are usually installed above the ground. If the Sirens is less than 11 meters on the ground, the intensity of the sound in the near range will increase, but the effective range of the sound will be reduced. On the contrary, if the ground is 13 meters above the ground, the effective range of the sound will increase, but the sound may skip the area near the Sirens.
Wind speed and wind direction often affect the spread of the siren sound, so when choosing to install a small or two Sirens system, the prevailing wind direction should be considered as a factor, such as the prevailing wind blowing from the west, then The Sirens can be installed at the far west of the effective distance.
In addition, the supply of electric energy, the convenience of installation and maintenance, the height of the surrounding obstacle and the possibility of preventing the damage must be considered as the installation site!
These variability requires us to be able to test how far the Sirens sound is covered at different heights and locations when installing the Sirens. After the selected Sirens installation site, always ensure that the incoming air is clean.
Now there are a lot of Sirens products on the market, so how to choose the correct and reasonable Sirens has become a very important part.
First, to distinguish between the use of occasions, the Sirens can be divided into industrial use Sirens and home Sirens, if the family or office use, you can choose home Sirens, home Sirens for the gas relative to a single, generally for the detection of natural gas , Liquefied petroleum gas, gas, etc., the price of home Sirens is relatively low, but the safety is no small matter, accidental gas leakage caused by casualties still remind us that we must pay attention to home safety. Detection of industrial gases requires the selection of industrial Sirens. Industrial production gas detector is more types, the basic detection of the environment within the gas components can choose a different gas detector to ensure the safety of industrial production.
Secondly, to find out what gas is detected gas. Classification from the gas category, the Sirens can be divided into Sirens and toxic Sirens. This is the overall classification. After determining the nature of the gas, it is necessary to figure out which gas is different and the gas required for the different gases is different. For example, home gas, we must first clear that the coke oven gas or blast furnace gas. If it is blast furnace gas, need to use carbon monoxide sensor; coke oven gas need to use hydrogen sensor.
Finally, according to their specific needs to choose the form of an Sirens, that is, need a fixed Sirens or the need for portable gas detector.