Fixed natural gas detection alarm

Combustible gas refers to a gas that can be uniformly mixed with air (or oxygen) within a certain concentration range to form a premixed gas. When it encounters a fire source, it will explode and release a large amount of energy during the combustion process.

Common combustible gases include:

1. Liquefied petroleum gas: It is obtained from the processing of petroleum or the extraction of petroleum and natural gas, and its main components are propane, propylene, butane, and butene. Gaseous liquefied petroleum gas is heavier than air, with a specific gravity of 1.5-2 times that of air.

2. Natural gas: Natural gas is a gaseous hydrocarbon produced by the long-term deposition of ancient biological remains underground, through slow transformation and metamorphic cracking. It is flammable and often accompanies the extraction of crude oil in oil fields. Natural gas is stored in porous rock formations about 3000-4000 meters underground, mainly composed of methane, with small amounts of ethane, butane, pentane, carbon dioxide, carbon monoxide, hydrogen sulfide, etc.

3. Gas: The main component is methane, which is a flammable gas that is colorless, odorless, insoluble in water, has a density lower than air, and is prone to explosion when mixed with oxygen or air at a certain temperature in a certain space.

4. Toluene: Toxicity: It belongs to the low toxicity category and is also flammable. Toluene can be classified into two types: toxic and flammable. (Specific communication with the customer is required to confirm the purpose of the testing)

5. Gas: The main components are carbon monoxide, hydrogen, alkanes, alkenes, aromatics, etc. Gas is toxic because its CO, aromatic hydrocarbons, and other substances can bind with hemoglobin in the human body, causing hypoxia, leading to drowsiness and even death. Even at low concentrations, it can cause dizziness, nausea, and collapse.

6. Biogas: It is a combustible gas produced by the action of biogas bacteria under conditions of air isolation and certain temperature, humidity, pH, etc. Since this gas was first discovered in swamps, it is called biogas. The main components of biogas are methane, with the rest being carbon dioxide, oxygen, nitrogen, and hydrogen sulfide (0-1000500010000ppm). The methane content is about 55% to 70%, and the carbon dioxide content is about 30% to 45%. Biogas is a mixed gas.

7. Hydrogen gas

8. Methane

Fixed natural gas detection alarm product features:

Power supply mode: DC24V;

On site concentration display with sound and light alarm, two-level alarm can be set by oneself;

Adopting imported electrochemical sensors with high sensitivity, good linearity, long lifespan, and stable performance;

Circuit optimization design, equipped with reverse polarity protection and current limiting protection, can effectively prevent unnecessary damage caused by wiring errors;

There are one or two passive relay contacts that output signals to drive external devices such as fans and solenoid valves;

Having explosion-proof rating of Exd II CT6 and protection rating of IP65;

Shell material: die cast aluminum+304 stainless steel (sensor cover);

There are two output signals to choose from: three wire system (4-20) mA and RS485, compatible with various gas detection and alarm controllers, PL PLC, DCS and other control systems to achieve remote monitoring.

Application areas of fixed natural gas detection alarm:

Petrochemical, industrial production, smelting and forging, power, coal mining, tunnel engineering, environmental monitoring, sewage treatment, paint spraying, solid waste treatment

Paper making, biopharmaceuticals, warehousing and logistics, brewing and fermentation, fire protection, gas, waste treatment plants, school laboratories, research centers

Design standards:

GB12358-2006 General Technical Requirements for Workplace Gas Detection and Alarm Devices

GB3836.1-2000 "Electrical equipment for explosive gas atmospheres - Part 1: General requirements"

GB3836.2-2000 "Electrical equipment for explosive gas atmospheres - Part 2: Explosion proof type" d ""

JJG 1077-2012 "Verification Regulations for Ozone Gas Analyzer"