The smoke and carbon monoxide detector is becoming more and more common today. It can be used to provide continuous monitoring of toxic and hazardous substances that can fill the room in the event of a fire. By installing such a signaling device, it is possible to eliminate the likelihood of an explosion and the spread of flame, as well as poisoning with toxic gas in an impressive concentration.
Working principle
Carbon monoxide detectors operate on the principle of moving air by natural convection. Air masses move through sensitive elements that are built into the equipment. With an increase in the permissible concentration of toxic substances, the carbon monoxide alarm sensor is triggered and gives an audible alarm, then the equipment is disconnected from the gas main, the hood, sirens, warning light displays start working, and the alarm signal is transmitted via communication channels.
Features of work
As soon as the gas supply is stopped, and its concentration drops to normal, the signal will stop and auxiliary devices will be activated. After that, the signaling device returns to the normal measurement mode. As soon as the cause is eliminated, on its own or with the help of a gas service, it will be necessary to restart the heating and heating equipment again.
Varieties of signaling devices
If we consider carbon monoxide sensors, then in terms of their design features, as a rule, they are standard. The equipment has a sensitive element that can be taken out. The device can be one-piece or two-piece. In the latter case, the design controls the concentration of carbon monoxide and natural gas. In the case of single-component devices, control occurs only for one element. On sale you can find carbon monoxide sensors that have remote gas contamination elements, while there may be one measurement channel or two. A control sensor is connected to each of them, in which a sensitive element is built.
What else do you need to know about the main types of gas alarms?
If the device has a remote sensor, then this allows the owner to remotely control the gas content at a distance that is equal to 200 meters. This includes, for example, the basement where the boiler room is installed. Among other things, the ownercan visually control the current situation, in this case it is best to use a two-channel device brand SG-1.
In some cases, there are multiple sources of gas accumulation or leaks. They can be removed from each other. In this case, you need to install sensors in each place. In this case, it is best to use the SGB-1 model. Each device is connected to the actuator as a gas valve. Manufacturers most often make the housing of the signaling device from plastic, which is compact. On sale you can find designs of different colors and shapes, while it is recommended to focus on your own preferences, as well as interior features.
Installation features
The carbon monoxide detector for the home can be installed on the bracket that comes with the device. The latter is connected to a 220 volt household network, and if you are interested in uninterrupted operation, you can choose a signaling device model that has a switch to backup power function. This may be necessary when the mains voltage is turned off. The master will have to additionally install a backup source with recharging brand IRP-1. You can purchase a device that runs on the battery inside. However, experts consider it more expedient to use equipment that operates from a 220-volt network, because in this case there is no need to monitor the battery's performance, as well as periodically replace it.
Regardingthe presence of heating and heating equipment, it is best to choose devices that are equipped with the ability to automatically switch to autonomous power.
Switching capacity
If you decide to purchase a carbon monoxide detector for your home, you should be aware that its switching capacity is expressed in terms of the load power of the available relays. The more of them are installed or the more power they have, the more loads can be connected to them. Here we are talking about signal boards, hoods, etc. The choice can be made independently, which will depend on the goals and the number of additional devices that are connected to the signaling devices. The highest connected load, if we are talking about the SGB-1 model, is 500 watts, which allows you to use almost any device that belongs to emergency automation. In some cases, it makes sense to choose the most affordable device such as SGB-1-2, which controls the leakage of carbon monoxide and methane. It is capable of outputting an exclusively audio signal through an existing bell. This assumes that someone must always be in the room. If the alarm is triggered, you will have to manually turn off the gas supply, turn on the hoods, call the gas service and open the windows.
Need to use
A household carbon monoxide detector is simply necessary when the family has a country cottage or a house,heated by boilers, stoves or fireplaces using liquid or solid fuels. The possibility of carbon monoxide accumulation when using this type of fuel is especially high. In some cases, there is a need to heat the house at a time when the owners stay overnight. Experience with such devices that operate on solid or liquid fuels is often not enough. It is best to install a non-sleeping electronic sensor, which may be the easiest. Here we are talking about the brand SGB-1-4.01.
The device will be sensitive to the accumulation of poisonous gases, and in the event of a similar situation, it will give an alarm. It is also important to note that all devices of the SGB-1 brand have LED sensors on the front panel, which visually allow you to determine what state the signaling device is in at a certain moment.
Possibility of connecting devices to the signaling device
The carbon monoxide detector should be used in conjunction with a valve that is responsible for stopping the gas supply when the devices are triggered. Whether or not to use such a valve, the owner must decide in advance, even before purchasing the sensor. It is worth considering that the most inexpensive models may not have the option that is used to control the valve. The latter must be selected according to the DN passage, which is indicated on the valve. In everyday life, valves of the following brands can be used: DN15, 20, 25, 32. The first variety, as a rule, is installed between the supply to the gas stove, as well as gas pipelines. Shut-off valves designed for domestic use,are used on the basis of impulse control. The connection must be made directly to the gas sensor. If the pulse valve is in the closed or open state, then it will not consume electricity at all, since there is no voltage applied to it. After the sensor is triggered, an impulse is sent from the annunciator to the valve, which opens the valve stem. The latter, under the action of the built-in spring, moves down, shutting off the gas supply. After that, the valve is no longer energized. In order to resume the gas supply, you need to open the valve, which is done manually by introducing the stem to its original position. In this case, the latch should work, which will be fixed in the open position.
Varieties of shut-off valves
A smoke and carbon monoxide detector used with shut-off valves may require different types of accessories. If we are talking about a valve, then it can be NO, which implies a normally open device. Sometimes you can find a normally closed device. In the first case, the device is not energized, and the valve is constantly in the open state, which indicates the free passage of gas. If you decide to purchase carbon monoxide sensors, you can read the principle of operation of this equipment in the article. But the valve for it can be electromagnetic. When choosing it, the consumer should pay attention to the intended location of this element. In most cases, such systems are recommended to be mounted on horizontal pipelines,because the design of the device requires it.
In some cases, the considered approach is impossible, because the supply pipeline has a vertical arrangement. In this case, you can choose the electromagnetic gas valve brand KEI-1M. Its main advantage is the possibility of installation on vertical and horizontal pipelines. Consumers choose these items also because of the rather attractive cost.
Sensor for giving
The carbon monoxide sensor for a bath is selected and installed according to the same principle. In addition to this equipment in the house, you can connect fume hoods and hoods that can be located above the hob. The scheme for connecting such a device to the sensor will be less expensive. It will be important only to connect the wires in parallel to the connection button that go to the contacts of the sensor relay.
