Online gas chromatograph for methane/non methane total hydrocarbons

A. Instrument principle

The instrument adopts a dedicated chromatographic column combination, central cutting and blowback technology, and hydrogen flame ionization detector (FID) technology for the detection of total hydrocarbons and methane. After the sample is collected in the quantitative loop, the injection valve is switched, and the sample is separately separated in the chromatographic column under the drive of the carrier gas. The total hydrocarbons are obtained by entering the FID detector, while the other sample gas is separated from the PQ chromatographic column and enters the 5A chromatographic column. After switching the valve position, the hydrocarbons are blown back, and methane is detected by the FID detector.

B. Instrument features

Adopting center cutting and reverse blowing technology;

Using a dedicated chromatographic column combination, peaks emerge within 30 seconds with no residue and high sensitivity;

The instrument has power on self-test function, power-off protection function, automatic restart function and alarm function to ensure system safety and stability;

The FID detector has automatic ignition function and wide range output, with a linear range of 10-7;

Using automatic electronic flow control technology (EPC) to control carrier gas, air, and hydrogen, with high precision (0.01psi), good repeatability and reproducibility;

The core components are all made of international brands, with high reliability and long service life;

monitoring parameters

Methane, non methane total hydrocarbons, and total hydrocarbons

Technical Specifications

Scope of application

Online monitoring of ambient air

Discharge outlets for scientific research petrochemical, spraying, printing, etc

Online monitoring at the factory boundary