The smoke and carbon monoxide detector is becoming more common today. With its help, it is possible to ensure continuous monitoring of toxic and hazardous substances that can fill the premises in case of fire. By the method of installing such an alarm, it is possible to exclude the possibility of explosion and flame propagation, as well as poisoning with toxic gas at an impressive concentration.
Principle of operation
The sensors of carbon monoxide function according to the principle of air movement by the method of natural convection. Air masses move through the sensors that are built into the equipment. When the permissible concentration of toxic substances is increased, the carbon monoxide alarm sensor triggers and provides an audible alarm, then the equipment is disconnected from the gas main, exhaust hoods, sirens, signal light panels start to operate, and the alarm signal 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 used. After that, the indicator returns to the normal measurement mode. As soon as the cause is eliminated, on its own or with the help of the gas service, there will be a need to restart the heating and heating equipment again.
Types of alarms
If we consider carbon monoxide sensors , then, as a rule, they are standard in their design features. The equipment has a sensor that can be pulled out. The device can be one-component or two-component. In the latter case, the structure controls the concentration of carbon monoxide and natural gas. In the case of single-component instruments, control is only for one element. For sale, you can find carbon monoxide sensors that have remote gas contamination, with one measurement channel or two. Each of them is connected to a monitoring sensor, in which a sensor element is built.
What else do you need to know about the main types of gas detectors?
If the device has a remote sensor, it allows the owner to remotely monitor the contamination at a distance that is 200 meters. This includes, for example, a basement room where a boiler house is installed. Among other things, the owner can visually monitor the situation, in this case it is best to use a two-channel device SG-1.
In some cases, there are several sources of gas accumulation or leaks. They can be removed from each other. In this case, you need to install sensors in each location. It is best to use the model SGB-1. Each device is connected to the actuator by the type of gas valve. Manufacturers most often make the case of a plastic detector, which is notable for its compactness. 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.
Features of the installation
The carbon monoxide sensor for the house can be mounted on the fastener that is supplied with the device. The latter is connected to the domestic network of 220 volts, and if you are interested in uninterrupted operation, then you can choose the model of the signaling device, in which there is a function of switching to backup power. This may be necessary when the mains voltage is disconnected. The master will have to install an additional source with recharging of the brand ИРП-1. You can buy a device that works from the battery inside. However, experts consider it more expedient to use equipment that operates on a 220-volt network, because in this case there is no need to monitor the battery's performance, and periodically replace it.
With regard to 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.
If you decide to purchase a carbon monoxide sensor for your home, you should be aware that its switching capabilities are expressed in the load capacity of the available relays. The more they are installed or the more power they have, the more loads you can connect to them. Here we are talking about signal boards, hoods, etc. The choice can be made independently, which will depend on the goals set and the number of additional devices that connect to the alarms. As the highest connected load, in the case of the SGB-1 model, there are 500 watts, which allows using almost any device that is related to emergency automatics. 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 producing an exclusively sound signal through an available call. This assumes that someone must be constantly in the room. When the alarm is activated, you 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 sensor is simply necessary when the family has a country cottage or a house heated by boilers, stoves or fireplaces on liquid or solid fuels. The possibility of carbon monoxide accumulation when using this kind of fuel is especially great. In some cases, there is a need to heat the house at a time when the owners stay overnight. The experience of handling such instruments, which operate on solid or liquid fuels, is often not enough. It is best to install an immovable electronic sensor, which can be the easiest. Here we are talking about the brand SGGB-1-4.01.
The device will be sensitive to the accumulation of toxic gases, and in the event of such a situation 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 in what state the signaling device is at a certain moment.
The possibility of connecting devices to the alarm
The CO sensor must be used in conjunction with a valve that is responsible for stopping the gas supply at the time the devices are triggered. Use or not use such a valve, the owner must decide in advance, even before the acquisition of 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 should be selected along the DN passage, which is indicated on the valve. In everyday life, valves of the following grades can be used: DN15, 20, 25, 32. The first version is usually installed between the gas supply to the gas stove, as well as gas pipelines. Shut-off valves intended for use in everyday life are used on the basis of impulse control. The connection should be made directly to the gas sensor. If the impulse valve is in the closed or open state, it will not consume any energy at all, since there is no voltage applied to it. After the sensor triggers, a pulse is sent from the valve to the valve, which opens the valve stem. The latter under the action of the built-in spring moves downward, blocking the supply of gas. After that, the voltage to the valve is no longer applied. In order to resume the gas supply, it is necessary to open the valve, which is done manually by inserting the rod to the starting position. This should trigger the latch, which is to be fixed in the open position.
Varieties of shut-off valves
A smoke and carbon monoxide sensor, which is used with shut-off valves, can assume the use of different types of add-ons. If it is 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, the device is not energized, and the valve is constantly in the open state, indicating free flow of gas. If you decide to purchase carbon monoxide sensors, you can read the operation principle 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, since this requires the design of the device.
In some cases, this approach is impossible, because the supply pipeline has a vertical arrangement. In this case, you can choose an electromagnetic gas valve brand KEI-1M. As its main advantage is the possibility of installation on a vertical and horizontal pipeline. Consumers choose these elements also because of the rather attractive price.
Sensor for summer residence
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 fume hoods and hoods, which can be located above the hob. The scheme of connecting such a device to the sensor will be less expensive. It will only be important to connect the wires in parallel to the connection button, which go to the contacts of the sensor relay.