Winter, now is the cold winter. There is nothing better than a nice hot bath. If there is, it should be a delicious meal made by yourself.

Water heaters currently on the market are mainly divided into gas water heaters and electric water heaters. Gas water heaters have the advantages of small size, fast heating, and can be used as they are opened, so they still have a large market share. When it comes to eating, the cooking skills in our country are really countless. They are basically based on open flames. Electric kitchen utensils such as induction cookers cannot make such a variety of delicacies. From this point of view, people's life is still unable to leave the gas. However, although the role of gas is huge, it still cannot cover up its defects, and the dangerous defect is that it is easy to cause an explosion! When the gas in a relatively closed space accounted for a certain air volume ratio, and then meet the fire. It will cause an explosion and fire, which will not only directly cause casualties and property losses, but also cause secondary explosions and fires if not handled properly.

Gas is so dangerous, but we can't do without it, so is there any way to avoid accidents? Can you find problems before explosions and fires and deal with them in time? Yes, the more popular ones are gas alarms and gas detectors. The core device of the alarm and detector is the sensor. Only a good sensor can bring accurate alarm signals to the alarm and detector, and a good alarm detector can be created.

However, there are many kinds of gas sensors, including semiconductor principle, catalytic combustion principle, infrared principle and so on. General civilian gas alarm detectors do not require particularly accurate measurements. Infrared spectroscopy, these high-precision sensors, are expensive and cannot be afforded by ordinary families, so there is no need to consider them. The principle of catalytic combustion has its advantages and disadvantages, and is generally used for large-scale industrial leaks. Suitable for household gas leak detection sensor is the sensor of semiconductor principle. So how to choose the right semiconductor sensor?

First of all, we are concerned about the quality, reliability and so on. Secondly, semiconductor sensor technology originated in Japan, after years of technology precipitation, their semiconductor sensor is still very reliable, all aspects of performance is also outstanding.In addition, when it comes to domestic brands, there is a congenital deficiency, that is, lack of experience, and there is still a certain gap in technology. Our domestic brands are developing very fast, but it does take time to catch up. Another thing is to choose a professional sensor. If all principles are involved, you should pay attention to it. It may be a matter of knowledge but not precision.

There are also many semiconductor sensors on the market and cannot be explained one by one. Let's mainly talk about Figaro sensor TGS2611-E00. Semiconductor sensor technology is derived from Figaro, has a long history, deep accumulation of technology. It can be said that it is the top of the pyramid of semiconductor sensors. They recognize the second estimate that no one dares to recognize the first. It's not just lip service, it depends on the actual performance of the sensor. First of all, from the perspective of response time, after all, no matter how accurate the sensor is, it will not work if the response time is long, otherwise it may explode when you call the police. The standard of the new national standard is to reach T90 within 30 seconds, while the TGS2611-E00 response time (T90) is within 15 seconds, which is far lower than the requirements of the new national standard. However, the new national standard is for the entire product, rather than a single sensor, but as long as the structural design to maintain air circulation, it is certainly to meet the new national standard.

Furthermore, we talk about the problem of anti-interference. Due to the characteristics of semiconductor sensors, semiconductor sensors are responsive to almost all combustible gases. In the kitchen environment, cooking wine is often needed when cooking food, and the alcohol will volatilize, which will interfere with the sensor and cause false alarms. The TGS2611-E00 has a filter layer, which can filter out large molecular gases such as alcohol. This also solves the problem of interference. Referring to the sensitivity curves of TGS2611-E00 to various gases, it can be seen that TGS2611-E00 has almost no sensitivity to alcohol.

Next, let's talk about the long-term stability of the sensor. After all, if the performance is unstable and fluctuates too much, it will cause the sensor to misreport and delay, which will seriously endanger the safety of people's lives and property. The TGS2611-E00 developed and produced by Figaro have been on the market long enough to withstand the test of the market. Long-term stability can refer to the figure below.

The new national standard also has a silicon vapor test, TGS2611-E00 with a filter layer, which can fully meet the requirements of the new national standard. The test standard of the new national standard is that the sensor should be able to work in 10ppm HMDS gas for 40 minutes, and the error in putting it back into the air should be within the allowable range. And TGS2611-E00 stick to it for more than a week is no problem.

Not only are these excellent performances, TGS2611-E00 can meet all the requirements of the new national standard, but they are much better than their competitors in terms of consistency and stability. In terms of life span alone, TGS2611-E00 can be said to be semi-permanent in theory, and it is conservatively estimated that it can work normally for more than ten years, thus avoiding the distress of frequent replacement of alarms.

In recent years, China's household gas alarm market is booming, promoting the rapid development of gas alarm enterprises, IOT enterprises and home security enterprises, but because the development time is still short, the product quality of various manufacturers is uneven, making it difficult for people to choose a good alarm. Therefore, in order to regulate the industry, the State Administration of Market Supervision and Administration and the National Standardization Administration of China issued the new national standard GB 15322.2-2019 for household combustible detectors on October 14, 2019, which will be enforced on November 1, 2020.

Judging from the new national standard for domestic gas detectors, a very important technical index has been added: anti-poisoning performance test and low concentration operation test. Judging from the previous domestic market gas alarms, most of the sensors used do not meet the requirements. The release of the new national standard is undoubtedly the weather vane for the development of gas alarms in the future. How to grasp the next market depends to a large extent on the selection of sensors, and Figaro has deep technical accumulation, the launch of the TGS2611-E00, but also in full compliance with the new national standard, it can be said that the gas alarm is very appropriate.

In the final analysis, people's lives and property must be guaranteed. Gas safety issues must be paid attention to. Interested friends can learn about TGS2611-E00 this sensor. It is definitely a good product. You can pay attention to which alarms are using this sensor. Here are some basic parameters of the TGS2611-E00:

Detection range: 500 ~ 10000ppm Detection object: CH4

Supply voltage: 5.0±0.2V

Heating voltage: 5.0±0.2V

Heating power consumption: about 280mW

Response time:<15s< span = "">

Advantages:

Low power consumption, small size and low cost;

Anti-silicon poisoning, long service life;

In line with ROHS certification, UL certification;

High sensitivity to natural gas, long-term stable performance;

Filtration with organic solvent, good selectivity to CH4;

TGS2611-E00It is developed by Figaro of Japan for gas leakage detection in complex environments such as kitchens. It can not only filter organic solvents such as alcohol, but also propane and butane. It achieves good selectivity to CH4 and conforms to the new national standard acetic acid, ethanol interference test and hexamethyldisiloxane vapor anti-poisoning test.