Automatic Low-Temperature Concentration Device, JX-5N (CAT#: STEM-AIAE-0538-ZJF)

The JX-5N Thermal Desorption Analyzer is an automatic low-temperature concentration device that utilizes semiconductor cooling, with the cold trap temperature capable of reaching as low as -40°C (depending on ambient temperature). The injection valve system (sulfinert treated) is motor-driven. It features three functions: sampling, analysis, and cold trap tube activation. The enrichment, injection, and other processes are fully automated. It can be used in conjunction with domestic and imported gas chromatographs and is suitable for applications in environmental monitoring and other fields.

Injection Valve Heating Range: 50℃-240℃, Temperature Control Accuracy 1℃
Sample Transfer Tube Heating Range: 50℃-240℃, Temperature Control Accuracy 1℃
Desorption Temperature Range: -35℃-450℃
Flash Heating Rate: >70℃/s
Enrichment Time: 0-60min
Desorption Time: 0-10min
Simulated Sampling Flow Rate: 16-160ml/min
Power: 500W

Utilizes semiconductor refrigeration to save operating costs.
Secondary desorption heating rate >70°C/s, reaching 450°C with peak width <3s.
All gas lines are made of passivated and polished 316 stainless steel, with sealing rings crafted from PTFE material, providing high temperature resistance and no volatile emissions.
Precision high-temperature resistant six-way valves are used in the heating valve box, treated with sulfinert sulfur passivation, with no dead volume, and a maximum operating temperature of 240°C. These valves are motor-driven, eliminating the need for external driving gas and ensuring convenience of use. Integration of the heating valve box and heating gas line design reduces intermediate links, minimizing issues related to low resolution caused by dead volume.
Optimal reducing fittings are designed based on calculations of the diameter of the analytical tube and gas path, treated with sulfinert sulfur passivation, minimizing dead volume at connection points between the cold trap tube and gas path.
Integrates sampling, analysis, and cold trap tube activation into one unit, providing comprehensive and cost-effective functionality.

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