Flammable Gas Explosion Limit (LEL) Analyzer

The HFID-3000 Combustible Gas Explosion Limit (LEL) analyzer uses flame ionization detector (FID) technology, with high sensitivity, good stability, and multiple optional measurement ranges. It can measure trace amounts of hydrocarbons in high-purity gases to LEL level hydrocarbon content in various gases, suitable for real-time analysis of total hydrocarbon concentration and lower explosive limit (LEL) of various organic gases. It is widely used for monitoring LEL explosion limit at RTO inlet, monitoring removal efficiency of VOC removal devices, and monitoring THC concentration.

Product Features

HFID-3000 has applications in industries such as pharmaceuticals, chemicals, tobacco, and food packagingsignificantThe advantage.

Fast response time: T90<2S, total response time<5S

Built in high-temperature pump, suitable for low-pressure sampling conditions

The system is heated throughout the entire process to avoid condensation and adsorption of organic matter in the sample gas

High measurement accuracy, better than 1% F.S

Can simultaneously output THC concentration and explosion limit LEL value

Built in EPC flow control for stability

The response factors for various types of hydrocarbons are close to 1, with stable measurement and high accuracy

Application scenarios

Measurement of total carbon and hydrogen in industrial process gases

Monitoring of gas concentration at the inlet and outlet of exhaust gas treatment devices (RTO/RCO/incinerators, etc.)

Real time monitoring of total hydrocarbons in emissions purification and chemical cleaning factories

Monitoring of Total Carbon and Hydrogen Content in Liquid Oxygen of Air Separation Unit

Real time monitoring of organic matter concentration at the discharge outlet of catalytic, biological, and activated carbon treatment devices

Real time monitoring of total hydrocarbons in clean gas converted from crude coal gas

Real time monitoring of total hydrocarbons (or other organic compounds) in workshops, factory areas, factory boundaries, and ambient air

Monitoring and early warning of organic matter leakage in the production process

Real time monitoring of total hydrocarbons in emissions purification and chemical cleaning factories

Monitoring of Total Carbon and Hydrogen Content in Liquid Oxygen of Air Separation Unit

Monitoring and warning of the lower explosive limit of solvent saturated air

Analysis principle

Analysis principle of hydrogen flame ionization detector (FID):

The principle of hydrogen flame ionization detector (FID) analysis is to use the flame generated by the combustion of hydrogen and air as energy. When organic compounds enter the flame generated by the combustion of hydrogen and oxygen, they undergo chemical ionization at high temperatures, thereby generating ions. To detect flame ions, dual electrodes are used to provide intrinsic differences. After the flame ions are collected, a current is generated, which is amplified by a high impedance amplifier and analyzed to obtain the total concentration of hydrocarbons. In order to avoid condensation of organic solvents in the analysis system, the detector adopts heating and thermal control, and the incoming hydrogen and air are pressure monitored to stabilize the internal temperature and pressure, ensuring the accuracy and reliability of the control system.

Product Parameters