Knowledge

LEL (Lower Explosive Limit) refers to the Lower Explosive Limit concentration of the gas. A 20%LEL indicates that the concentration of flammable gas in the environment has reached 20% of its lower exp

The fire alarm system comprises triggering devices-such as smoke detectors, heat detectors, flame detectors, and combustible EX gas detector -as well as a fire alarm control panel, which is used to re

To select an appropriate calibration gas cylinder for gas detector, you must determine the type of gas, its concentration, and the cylinder material. 1.Select the cylinder body material based on the c

First, during the coking process, coal is heated to temperatures exceeding 1000℃, triggering reactions that generate toxic gases: carbon monoxide (CO) and hydrogen (H₂). Hydrogen sulfide (H₂S) is form

Regarding fixed hydrogen gas detector of hydrogen inhalation machines used in clinics, priority should be given to fixed-position hydrogen transmitters utilizing catalytic combustion or high-precision

When LPG is in liquid form, its volume is highly compressed. Once it leaks, it will rapidly vaporize into gas that is 250 to 350 times its original volume. This means that even a small amount of liqui

When a car engine is idling or running at low speed, incomplete combustion of gasoline produces exhaust gas containing a certain amount of carbon monoxide (CO). CO is colorless, odorless, and tasteles

For industrial gas-fired burner which using NG (natural gas) and LPG (liquefied petroleum gas), gas leak detection is mandatory. This is not only a legal requirement but also a core measure to prevent

Sulfur dioxide is a toxic gas with a strong pungent smell (similar to burning matches). Inhaling it can severely irritate the respiratory tract, causing coughing, breathing difficulties, chest tightne

With the development of highway and railway transportation networks, the construction of these networks inevitably involves tunnel excavation. Due to the phenomenon of gas poisoning in tunnels, we mus

Hydrogen sulfide is a toxic gas and may be exposed to it in some workplaces. To ensure the health and safety of the staff, it is necessary to formulate corresponding safety standards. Among them, the

Hydrogen sulfide (H2S) is a highly toxic gas that can easily cause poisoning and even threaten life. Therefore, it is particularly important to conduct online monitoring of hydrogen sulfide concentrat