Precautions when buying a household gas alarm
Posted on

Gas leakage is a very important gas safety device. It is the last protection for the safe use of city gas. Gas leakage detects low-concentration flammable gas in the surrounding environment through a gas sensor, and transmits the detection signal to the controller or control circuit with an analog or digital quantity through a sampling circuit. When the concentration of the flammable gas exceeds that set in the controller or control circuit When the value is reached, the controller sends an alarm signal or closes the gas valve through the actuator or the execution circuit. Combustible gas sensors Combustible gas sensors are mainly oxide semiconductor, catalytic combustion, and re-line gas sensors, as well as a small number of other types, such as chemical battery sensors. These sensors all absorb the flammable gas in the surrounding environment and produce a chemical or electrochemical reaction on the sensor surface, which causes the change of the electrophysical properties of the sensor.
Functionally, gas leaks can be divided into leaks with only a leak alarm function and detections that can indicate the detected gas concentration and have an alarm function; from the place of use, they can be divided into civilian gas leaks and commercial use. Civil use is usually independent gas used in residences, with simpler functions; commercial use mainly uses gas transportation, storage places, factories and public places that use gas and may have gas leakage. The city gas regulations stipulate that gas should be installed in basements, semi-basements, gas-used rooms in closed spaces above ground, pipeline wells in buildings, and closed meter rooms. Building and gas related codes and regulations also recommend the use of domestic gas leaks.
The use of gas leaks greatly reduces the probability of major accidents due to gas leaks in places where gas equipment is used.
The most critical performance of a gas leak is that it requires both high sensitivity to the detected gas and high stability and anti-interference. Because the sensors used have a tendency to "drift" to varying degrees. Therefore, it is very difficult to make high-performance and high-quality gas leakage. Pay attention to the following points when choosing to buy a gas leak:
1. According to the type of gas used, gas leakage is generally not universal. Natural gas is used for natural gas, artificial gas is used for artificial gas, and liquefied petroleum gas is used for liquefied petroleum gas or general-purpose combustible fuel gas calibrated with liquefied petroleum gas. Gas detection (note: the composition of gas in different regions is different, you should use the gas that is calibrated and tested with the local gas composition).
2. When purchasing gas leaks, you should choose products from reputable companies in the market. Do a good research before buying, because on the one hand the products on the market are mixed, and users will not know the product well; Products have no performance and quality in the absence of gas leakage, so their long-term stability requirements are very high. However, the current gas leakage product standards are still insufficient in assessing their long-term stable performance. Therefore, manufacturers' research on products And quality control is very important for the performance quality of the product. You can also learn about the use of the product from users who have been using it for a long time and the test results of the gas in use issued by the product testing unit for reference.
3. Pay attention to the long-term stability and service life of the gas leak, especially the sensor has a life span. When buying, you should know from the seller and the manufacturer. At the same time, due to the importance of gas leaks in public places for safety, the recently released Shanghai Gas Management Regulations stipulate that commercial gas leaks should be commissioned by a professional testing structure to perform regular inspections to ensure their normal use.

SONDEX Heat Exchanger Gaskets

Founded in Denmark in 1984 and now part of the Danfoss Group, Sondex is a global company specializing in the production of high-performance plate heat exchangers that can withstand a wide range of pressures and temperatures according to the specific needs of its customers. Saunders has its own hydraulic equipment and gasket production facilities, and all molds are designed and manufactured by itself to ensure product quality.

Founded in Denmark in 1984, Sondex A/S is dedicated to providing customers with tailor-made plate heat exchanger solutions. Over the next few years, the company grew rapidly and became a global enterprise.

Main products of SONDEX include ordinary gasket type, semi-welded type, fully welded type, wide spacing free flow type, brazed type and food special type of various types of plate heat exchangers, as well as applied to the Marine industry.

As the world's leading plate heat exchanger plate manufacturer and seller, Baode has a wide variety of domestic plate heat exchanger plates, more models! It can provide all common types of plate heat exchanger plates from well-known brands at home and abroad (including: AlfaLaval /GEA, TRANTER, SONDEX/HISAKA/APV/Thermowave /Schmidt/FUNKE/VICARB/LHE, etc.).

Sondex Heat Exchanger Gasekts,Rubber Gasket For Oil Cooler, SONDEX Rubber Gasket

Jiangsu Baode Heat-Exchanger Equipment Co.,LTD , https://www.baodehex.com