Smoke and carbon monoxide sensors are becoming more common today. With its help, it is possible to provide continuous monitoring of toxic and dangerous substances that the room can fill in case of fire. By installing such an alarm device, it is possible to exclude the possibility of explosion and flame propagation, as well as toxic gas poisoning in an impressive concentration.
Principle of operation
Carbon monoxide sensors operate by the principle of air movement by natural convection. Air masses travel through sensors that are built into the equipment. When the permissible concentration of toxic substances increases, the carbon monoxide detector detects and gives an audible alarm, then the equipment disconnects from the gas line, the hood, sirens, and warning lights begin to work, and the alarm is transmitted through 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 indicator returns to normal measurement mode. As soon as the cause is eliminated, on their own or with the help of the gas service, it will be necessary to restart the heating and heating equipment.
Varieties of signaling devices
If we consider carbon monoxide sensors, then by their design features they are usually standard. The equipment has a sensing element that can be carried out. The device may be a single component or two component. In the latter case, the design controls the concentration of carbon monoxide and natural gas. In the case of single-component devices, control is carried out for only one element. On sale you can find carbon monoxide sensors that have external gas contamination elements, and there can be one or two measurement channels. A control sensor is connected to each of them, in which a sensitive element is integrated.
What else do you need to know about the main types of gas detectors?
If the device has a remote sensor, this allows the owner to remotely control the gas contamination at a distance of 200 meters. This may include, for example, the basement where the boiler room is installed. Among other things, the owner can visually monitor the situation, in this case, it is best to use a two-channel device brand SG-1.
In some cases, there are several sources of gas congestion or leaks. They can be removed from each other. In this case, you need to install sensors in every 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 body of the detector 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 hardware that comes with the device. The latter is connected to a 220 volt household network, and if you are interested in smooth operation, you can choose a model of the signaling device, in which there is a function for switching to backup power. This may be necessary when disconnecting the mains voltage. The master will have to additionally install a backup source with charging of the IRP-1 brand. You can purchase a device that runs on the battery inside. However, experts consider the use of equipment that operates from a 220 volt network to be a more appropriate solution, because in this case there is no need to monitor the battery's performance, and also periodically replace it.
As for the availability of heating and heating equipment, it is best to choose devices that are equipped with the ability to automatically switch to autonomous power.
Switching abilities
If you decide to purchase a carbon monoxide detector for your home, you should be aware that its switching capabilities are expressed in the load power of existing relays. The more they 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, when it comes to the SGB-1 model, is 500 watts, which allows you to use almost any device that relates to emergency automation. In some cases, it makes sense to choose the most affordable device like SGB-1-2, which controls the leakage of carbon monoxide and methane. It is capable of delivering an exclusively audible signal through an existing call. This suggests that someone must be in the room at all times. When 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 great. In some cases, there is a need to heat the house at a time when the owners stay for the night. Experience with similar appliances that run on solid or liquid fuels is often not enough. It is best to install a sleep-free 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 case 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 condition the signaling device is in at a certain moment.
Ability to connect devices to the alarm
The carbon monoxide sensor must be used in conjunction with a valve that is responsible for shutting off the gas supply at the time the instruments are triggered. To use or not to use such a valve, the owner must decide in advance, even before acquiring the sensor. It should be noted that the most inexpensive models may not have the option that is used to control the valve. The latter must be selected along the DN passage, which is indicated on the valve. In everyday life, you can use valves of the following grades: DN15, 20, 25, 32. The first variety, as a rule, is installed between the inlet to the gas stove, as well as gas pipelines. Shut-off valves designed for domestic use are based on pulse control. Connection should be made directly to the gas sensor. If the pulse valve is in a closed or open state, then it will absolutely not expend energy, since voltage is not supplied to it. After the sensor is triggered, a pulse is supplied from the signaling device to the valve, which opens the valve stem. The latter under the action of the built-in spring moves down, blocking the gas supply. After that, the valve is no longer supplied with voltage. In order to resume the gas supply, it is necessary to open the valve, which is done manually by introducing the rod to its original position. In this case, the latch should work, which should be fixed in the open position.
Varieties of shut-off valves
The smoke and carbon monoxide detector , which is used with shut-off valves, may involve different types of add-ons. If we are talking about a valve, then it can be BUT, which implies a normally open device. Sometimes you can find a normally closed device. In the first case, no voltage is applied to the device, 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 proposed location of this element. In most cases, such systems are recommended to be mounted on horizontal pipelines, as this is required by the design of the device.
In some cases, the approach under consideration is impossible, because the inlet pipeline has a vertical arrangement. In this case, you can choose the electromagnetic gas valve brand KEI-1M. Its main advantage is the ability to install on a vertical and horizontal pipeline. Consumers choose these elements also because of a rather attractive cost.
Sensor for giving
The carbon monoxide sensor for the bath is selected and installed according to the same principle. In addition to this equipment in the house, you can connect the hoods and hoods, which may be located above the hob. The connection scheme of such a device to the sensor will be less expensive. It will be important only to connect to the connection button in parallel the wires that go to the sensor relay contacts.