What is the prospect of no gas after the sounding of the gas alarm in Guigang Qintang? 2 Product performance requirements The performance of the alarm should meet the requirements of the current standards. Specifically, it includes the following aspects. Sensitivity. It is a key indicator to measure the performance of the alarm. It can usually be set according to the lower limit. The lower limit refers to the small concentration of flammable gas and air mixed. Generally, LEL is used to It indicates that the low limit alarm is usually within 125 of the lower limit, and the high limit alarm is usually within 50 of the lower limit. If there is only one set value, the preset low limit needs to be met. Specific requirements should be met as shown in Table 1. How many people in Guigang Qintang face the various threats caused by gas, there is really no complete solution. According to the introduction, the use of gas alarms is an important means of dealing with gas intangibles. The gas pointed out that the large amount of carbon oxides produced by the emission of gas or exhaust gas is the source of response to gas poisoning. If a gas alarm is used, a timely warning can be obtained. Relevant departments have also concluded through long-term testing that the effectiveness of gas alarms in preventing carbon oxide poisoning has reached more than 95. Gas alarm is a gas detection alarm device. When the gas in the industrial environment, how to install the gas alarm in Guigang Qintang, how to test whether the gas alarm in Guigang Qintang is normal, when the gas alarm detects that the gas concentration reaches the critical point set by the poison alarm, the gas alarm will Send an alarm signal. A full range of new sensor drift automatic compensation functions can be provided to drift according to the sensor's drift to truly prevent false alarms and missed reports During the whole process, the working temperature can be reset automatically at 40 degrees and 80 degrees. No manual reset is required to ensure the time to deal with the hazards of combustible gas and carbon oxides. . Packaging Nanchang uses Pan as the power source of the alarm in your heart. The green light is on, it lights up after power-on, and goes off when the alarm occurs. Installation location of process inspection When the specific gravity of the detected gas is greater than the specific gravity of air, the detector should be installed at a distance of 3060m from the ground. After the gas alarm in Guigang Qintang sounds, how can the airlessness be heard? 8 After installation and debugging, be sure to install a breathable waterproof cover to prevent rainwater from damaging the probe. Reputation guarantee Article 1043 of the Urban Gas Design Code GB500282006 stipulates that an exhaust device and a gas concentration detection alarm should be provided in the residential kitchen. standard requirement
After the gas alarm in Guigang Qintang sounds, what is the prospect of gas-free gas? Oalgas, divided into blast furnace gas converter gas coke oven gas and city gas artificial gas, etc., all contain a certain amount of carbon oxide gas. A gas containing combustible components produced by processing coal. According to the nature and purpose of processing gas, it can be divided into coal gasification, water gas, semi-water gas, and air gas (also referred to as generator gas). The values of these gases are low, so they are collectively referred to as low-calorific gas coal coking method. Coke oven gas is a medium-calorific value gas that can be used as a civil fuel in cities. Carbon oxide and hydrogen in coal gas are important chemical raw materials and can be used to synthesize ammonia and methanol. For this reason, the gas used as chemical raw materials is called synthesis gas, and it can also be made from natural gas light oil and heavy oil. The main components of gas are O hydrogen and hydrocarbon olefin aromatics. The gas content of different cities may vary widely. Gas is toxic because the O aromatics and the like can bind to the hemoglobin in the gas, causing hypoxia, making people unconscious and even dying. At low concentrations, it can also make people dizzy and nauseous. Therefore, special care must be taken when using gas. The gas pipeline cooker and related valves should be frequently used. The valves should be closed tightly after each use to prevent them. Article 1043 of GB500282006 of urban gas design code stipulates that the exhaust gas device and gas concentration detection alarm should be installed in the residential kitchen. 2 Stable gas alarms should choose the products of companies with a good market, and conduct research in the first place, because the alarm products on the market are mixed, and users will not know that this product is a long-term product. In the absence of gas, the performance and quality are not visible, so long-term stability is required. Today, natural gas is widely used. While improving the quality of life, it also brings safety issues. Once natural gas is used, it will not only waste resources, but also cause poisoning and other adverse consequences. Therefore, it is very important to ensure the safety of gas consumption, and it must be paid attention to by relevant personnel. The emergence and use of gas alarms solves this problem well. Whether the gas alarm can achieve the desired effect depends on the selection, installation and commissioning. Guigang Qintang 2. The second step. Report to the gas management department immediately. The staff should deal with it. three. After being handled by personnel, the alarm should be ventilated. Project Scope 3 Gas Alarm Selection In the process of selecting a specific gas alarm, you should start from multiple angles and aspects, including the comprehensive qualification of the enterprise. The performance of different alarms and the after-sale quality and economic cost of the product, including the following requirements1 Enterprise qualification requirements For a good company, the fire department has carried out type approval for it, and issued the corresponding and mark. All products that are not approved or have no logo are unusable. 32 code R artificial gas Y liquefied petroleum gas T natural gas K output switch. The new product Baoshan alarm sound is also among the best in the industry, reaching more than 95DB. 1The installation location of the alarm is within 15 meters from the gas source radius, and the well-ventilated place is lighter than air in natural gas city gas carbon oxide fumes. If detecting these gases, it is recommended to install it at a distance of about 03 meters from the ceiling. In terms of the stability of the gas-free prospect after the sounding of the gas alarm in Guigang Qintang, most of the alarms are installed in places with harsh environmental conditions, such as boiler rooms and rooms, or directly installed outdoors. The degree of such locations will change frequently. Performance has a definite impact. Therefore, when selecting an alarm, it should also fully consider its stability, and implement real-time monitoring if conditions permit. Integrity and Mutual Benefit Whether it is natural gas liquefied petroleum gas or coal-based gas, after various reasons, when the indoor gas concentration exceeds the lower limit, the static electricity of the lighter electrical switch in the event of a fire occurs. Why do gas-poisoned cities ’artificial coal gas have different components, but they all contain more carbon oxides, for example, Harbin Gas contains carbon oxides, gas contains carbon oxides, 1 Qingdao gas contains carbon oxides, and Qinhuangdao gas contains carbon oxides up to 30. As we all know, carbon oxide is a highly toxic gas. Healthy people will produce it in air containing carbon oxide 1 in 10 minutes and die in half an hour. Therefore, when coal is used to make gas, there are both dangers and the danger of direct poisoning by carbon oxide poisoning. In addition, the gas alarm in Qintang, Guigang is very old. When using a gas water heater or coal stove and poor ventilation, carbon dioxide poisoning and exhaust poisoning will also occur. What is the lower limit is the low concentration of fire in the air, the alarm concentration is set below 14 lower limit. For example, the lower limit of the main component of natural gas for natural gas is 50.50 million ppm C (the main component of liquefied gas). The lower limit of 2020 is the main component of hydrogen (the main component of coal gas). The lower limit of 40 (40000 ppm) is the reason for any household. No matter how you pay attention, there may be 10,000. Among them, the misfire caused by ignition or the blowout of the main valve in the middle of the wind blowout are not strictly controlled, which accounted for many reasons. Why the alarm can know the core of the gas alarm is a gas sensor, commonly known as electronic nose. This is a unique resistance. When the gas is smelled, the sensor resistance changes with the gas concentration. When the gas reaches a certain concentration and the resistance reaches a certain level, the sensor can issue an audible and visual alarm. What light alarm gas makes the indoor concentration reach the alarm concentration, the red indicator light of the alarm is on, the buzzer emits a clear alarm sound, so it is called sound and light alarm. Why does the gas alarm have a sensor whose validity period is not high enough? Generally, the performance will decrease in 12 years, so the safety type of the alarm is lost. The other electronic components in the alarm, such as transformer capacitors and transistors, have limited lifetimes, so even advanced ones also have a validity period of many years. To ensure safety, new alarms must be replaced after the year expires. The principle of gas alarm is a very important gas safety device. It is the back-end protection for the safe use of city gas. Gas alarm gas sensor detects low-concentration flammable gas in the surrounding environment. The sampling circuit transmits the detection signal to the device or circuit by analog or digital quantity. When the concentration of the flammable gas exceeds the value set in the device or circuit, the device executes Or the execution circuit sends out an alarm signal or closes the gas valve. Combustible gas alarms. Combustible gas sensors are mainly oxide semiconductor catalytic hotline gas sensors, and a small number of other types, such as chemical battery sensors. These sensors are the adsorption of flammable gas in the surrounding environment, which produces a chemical or electrochemical reaction on the sensor surface, causing changes in the sensor's electrophysical properties. Online consultation
Guigang Qintang gas alarm sounds after the gas-free alarm sounds. Infrared gas detectors have a relay, two are responsible for alarm, and one is responsible for fault self-test. Without relays. This alarm can be adjusted by jumper to the following working status. The contact status can be normally open or normally closed, and the relay can be adjusted to be continuously energized or continuously de-energized. In addition, the siren can be adjusted to mute state. The alarm point can be adjusted by menu. The self-test siren can also be tuned to a mute menu and respond to the following situations: Zero-point drift below the measurement range: microprocessor error, infrared light source error, signal parameter error, or any other condition that prevents normal calibration. The relay contact setting current is 5 amps at 250 volts AC and 5 amps at 30 volts DC. Potential development In the hybrid networking mode, the alarm automatically cuts off the solenoid valve at the same time as the alarm, and the community access control system or other fire alarm system sends the signal to the community monitoring center. The community SMS platform can send the user's home gas alarm information to Users on. Some products are equipped with a host, which can send text messages or call reminders to users. Product line 54 is energized to indicate that the test alarm is placed 300mm away from the ground. Under the condition of 3001x illumination, it is 3m away from the energized indication lamp. Visual inspection indicates that the lamp should be clear. When the gas alarm alarms and uses the automatic cut-off device, the following actions should be taken immediately. Do not turn on the lights or turn on any electrical switches. Open the windows immediately for ventilation. Look for the cause of the gas, and eliminate it. Make sure the gas does not continue. Be careful not to touch the power supply of the household gas alarm at will to prevent the gas alarm from working properly. Attentions for the installation of household gas alarms When installing the gas alarms, do not face the oily vapors of the stove in a well-ventilated place, do not block them with curtains or cabinets, and do not install in places where the water vapor is large. Type household gas alarm uses high-speed PU processor, which can quickly and accurately process system tasks to ensure system reliability. The type of household gas alarm is a small intelligent alarm that can detect gas concentration and can also perform gas analysis concentration alarm and start. Signal output from external equipment. The main gases are liquefied gas, city gas, and natural gas. The service life cycle is 4 years. Household gas alarms use high-quality gas sensors. Microprocessors combined with precision temperature sensors can intelligently compensate for the drift of gas-sensitive components. It has a wide range of environmental adaptability and stable work without commissioning. Simple installation and convenient wiring. Household gas alarms are widely used in household hotels, apartments, and other places where natural gas is present for safety monitoring. Features of household gas alarms. Combustible gas detectors use high-speed PU processors to process system tasks quickly and accurately. Ensure the reliability of the system The home alarm uses Japanese basic sensors, detection, strong reliability, fast warm-up, fast response time. The home alarm can achieve the function of valve and exhaust at the same time. The good technology of the home alarm circuit board is the patch. The technology improves the reliability of the product. The alarm sound is 75 decibels, and the service life cycle of the sensor of the home alarm that detects the difference between the alarm sound and the fault sound is 4 years. The sensor life expires prompt function, and users are more at ease. Which one is good 2 According to the specific environment, design a flammable gas alarm system design plan, you need to consider the coverage of the gas pipeline to choose the proportion of flammable gas and air at the installation point, choose the specific area of the environment to be tested at the installation location, and decide to use flammable gas detection. Number of alarms and selection of gas alarm host. The type 22 gas sensor alarm can be divided into direct and catalytic. The principle is that when the gas-sensitive material is normally energized, the combustible gas will oxidize or catalyze. The heat generated will increase the temperature of the heating wire, and then change the resistance value. The measurement of resistance and its change determines the concentration of the gas. The alarm can only detect flammable gas, but cannot detect non-flammable gas. This alarm is stable at ambient temperature, and can detect most of the flammable gases at the lower limit. It can be used in many areas. In addition to good areas, it can also be used in the kitchen and bathroom of ordinary households.