• overview

ATDS-8024The series single channel fully automatic secondary thermal desorption instrument is a fully automatic thermal desorption instrument with electronic cold trap and secondary adsorption desorption function. It solves the problems of peak shape difference and low desorption rate in primary desorption by focusing on the secondary cold trap and rapid heating through direct resistance heating.

• performance index

1. Temperature control range for desorption (adsorption tube): room temperature to 420 ℃
2. Six way valve injection system temperature and control range: room temperature~220 ℃
3. Sample transmission pipeline temperature and control range: room temperature~220 ℃
4. Secondary desorption (focusing tube) temperature control range: room temperature~450 ℃, heating rate>3000 ℃/min
5. Cold trap (electronic semiconductor refrigeration) temperature control range: -40 ℃ to room temperature, no need for liquid nitrogen refrigeration
6. Temperature control accuracy:<± 1 ℃
7. Temperature control gradient:<± 1 ℃
8. Gas path pressure resistance:>0.4MPa
9. Sample grade: 12/24/36/50
10. Backflow rate: 0-100ml/min (continuously adjustable)
11. Simulated sampling flow rate: 100ml/min
12. Sample desorption, blowing, injection, and blowback time:

Sample desorption time: 0s to 1000min

Sample blowing time: 0s to 1000min

Sample injection time: 0s to 1000min

Backblowing time of pipeline: 0s to 1000min

13. Timing range: 1s-1000min
14. Timing error:<0.1%
15. Analysis accuracy: RSD<2.5% (related to GC performance and operating techniques)
16. Adsorption tube specifications: diameter: Φ 6mm/Φ 6.35mm, length: 89mm
17. Synchronous signal output: 2 switch signals, with a linkage switch time of 1-2 seconds
18. Power supply: AC220V 50Hz
19. Power: 800W (peak)
20. Instrument size: 700 × 350 × 540mm3
21. Instrument weight: approximately 38kg

• MAIN FUNCTION AND FEATURES

1. The fully automated system is safe and reliable, and does not require personnel to be on duty
2. Modular design of software and hardware, compact structure
3. Strong universal performance: can be used in combination with almost all brands of gas chromatographs (GC) and gas chromatography-mass spectrometry (GC-MS)
4. Simple human-computer interaction, easy operation, high degree of automation (software automatically completes the desorption and injection analysis process of all adsorption tubes), good sample repeatability
5. Equipped with industrial grade touch LCD screen, the interface information is rich and complete, the operation is simple, the method parameter is set, the working status and running time are displayed in real time, and the temperature and operation commands are tracked throughout the process
6. Adsorption tube, injection valve, transfer tube, and focusing tube (cooling, heating) can all be individually controlled for temperature. There are 10 methods for editing, storing, and calling at any time, and one click automatic completion of sample analysis
7. Simple sample processing: The sample tube is detachable, making it easy to carry and collect samples in the field
8. The cold trap adopts semiconductor cooling and air cooling, with a minimum cooling temperature of -40 ℃ (at room temperature of 20 ℃)
9. The six way valve and transmission pipeline link have no transmission cold points, and can be temperature controlled and heated to reduce sample loss and ensure sample integrity. It comes with standard sample preparation function
10. Provide a synchronization interface, which can synchronously start gas chromatography, mass spectrometry, and chromatographic data processing workstations while injecting samples. The device can also be started using external event programs. The six way valve injection method effectively reduces dead volume and ensures injection accuracy
11. The sample pipeline adopts silane inert treatment stainless steel pipe to reduce residual pollution
12. Equipped with leak detection and fault alarm functions
13. The outstanding cooling temperature and heating rate ensure accurate chromatographic peak shapes