The online methane+benzene VOC integrated detection gas chromatograph is equipped with a chromatographic gas path control module, a program heating column box, a modular constant temperature column box, a constant temperature valve box, two FID detectors, and an industrial control computer. The internal structure of the instrument is divided into a chromatography section and a circuit control section. The double-layer partition design in the middle separates the circuit and gas circuit parts, avoiding the electromagnetic influence of the circuit on the detector. Keep the parts that are easily affected by temperature away from the heat source. Good internal heat dissipation environment.

Product Features

1. Adopting a chromatographic gas path process of pre column separation, center cutting, and back blowing, in compliance with the standard HJ/604-2017, direct injection is used to measure methane and non methane total hydrocarbons;

2. By using pre column separation technology and backflushing the pre column after injection, it can prevent interference of high molecular hydrocarbons on subsequent sample analysis. To achieve the goal of rapid analysis. The sample is kept at 180 ℃ and peaks within 30 seconds without any residue

3. The instrument has a power on self-test function, gas cut-off protection function, automatic restart function upon power failure, and a comprehensive fault self-test alarm function, which can intelligently prompt fault codes based on the fault symptoms. Ensure system security and stability;

4. Optimization design of FID detector for non methane total hydrocarbons. Has high noise to performance ratio, automatic ignition and automatic ignition function, amplifier adopts wide range output, linear range 10-;

5. The membrane type control valve used can achieve high repeatability and stability for carrier gas, air, and hydrogen gas; Optional electronic pneumatic control EPC for intelligent pressure and temperature correction. Further improve repeatability.

technical indicators

Range: Methane（0.1~10000）ppmNon methane total hydrocarbons(0.05~10000）ppm(Optional)

Detector: Hydrogen flame ionization detector(FID)

Detection limit: ≤0.1ppm(Methane),0.05ppm(Non-Methane Total Hydrocarbons (NMTHC))

Repeatability;RSD≤2%Analysis cycle: Single channel ≤40S

Power supply:<300W,220VAC/50Hz

Working environment: Temperature:(-10~50）℃, humidity(10%~100%)

Gas source requirements: Carrier gas: high-purity nitrogen or zero grade air(299.999%）；

Combustion gas: high-purity hydrogen gas (≥99.999%）； Auxiliary gas: zero grade air(hydrocarbons<20ppb)

Sample flow rate:10-500ml/min

Data storage format: The data is stored on the hard drive of the industrial control computer, and will not be lost when powered off, making it easy to trace the data.

Size:6U19’’Standard chassis