The AGC gas chromatograph achieves high-purity gas trace analysis mainly relying on its advanced technology design and precise detection system.
In terms of detectors, the AGC gas chromatograph is equipped with a helium discharge ionization detector (DID), which works based on the ionization effect generated by helium discharge and can quickly and sensitively detect various gases. When the sample gas enters the detector, it will be ionized under high voltage, producing positive and negative ions. These ions move towards the collection electrode under the action of an electric field and collide with electrons to generate a current signal. By measuring the intensity of the current signal, quantitative analysis of the sample gas concentration can be achieved. This detector has a low detection limit and can detect gas concentrations at ppb or even ppt levels. It has a wide range of detection capabilities for various gases, including non-polar, polar, and halogen containing gases. It has a fast response time, good stability, and can maintain high detection performance even after long-term use. It can meet the strict requirements for sensitivity and stability in high-purity gas trace analysis.
In the temperature control system, the AGC gas chromatograph adopts high-precision PID temperature control technology and high-sensitivity temperature sensors, with a temperature control accuracy of ± 0.1 ℃. The combination of precise gas path pressure control and temperature control ensures the qualitative and quantitative capabilities, which helps to improve the accuracy of analysis results.
In addition, the AGC gas chromatograph also has a multi column box independent temperature control function, and each chromatographic column can achieve independent temperature control, which can be flexibly adjusted according to different analysis needs to achieve more accurate separation and analysis. At the same time, it can configure different detectors according to different needs, such as DID, ADD, FID, TCD, FPD, etc., to adapt to trace analysis tasks of various high-purity gases.