1. Large screen LCD Chinese display, real-time display of various temperatures and operating conditions, clear and intuitive content, truly realizing human-machine dialogue;
2. Power on self-test, wide range self diagnostic function, can accurately determine the fault location and alarm;
3. Six independent temperature control channels (vaporization chamber and capillary vaporization chamber can independently control temperature), with eight step programmed temperature rise function;
4. Overtemperature protection function: If any circuit exceeds the set temperature, the instrument will automatically power off and sound an alarm;
5. The unique vertical heating device makes sample vaporization more reliable, minimizes the heat radiation generated by the vaporization chamber, and ensures minimal temperature deviation inside the column box;
6. Intelligent fuzzy control rear door opening system, automatically tracks temperature and dynamically adjusts air door angle, truly achieving near room temperature operation
7. Configure a capillary split/non split injection device with filling column head injection and glass lining injection, equipped with diaphragm cleaning function, and capable of installing gas injectors;
8. High precision dual stable gas path, capable of installing four types of detectors simultaneously;

1Gas chromatograph GC-7900Temperature control index parameters:

1. Temperature control range: room temperature+5 ℃~400 ℃, increment 0.1 ℃
2. Temperature control accuracy: better than ± 0.01 ℃
Program heating: Eight step constant temperature time from 0 to 999min
Increment of 0.1 minutes, temperature increment of 0.1 ℃
Heating rate:
Maximum 40 ℃/min at 200 ℃
Maximum 20 ℃/min at 200 ℃

IIGas chromatograph GC-7900Detector indicator parameters:

Hydrogen Flame Detector (FID):
Sensitivity Mt ≤ 3 × 10-12g/s (n-hexadecane)
Noise ≤ 5 × 10-14A linear range ≥ 106

Thermal conductivity detector (TCD):
Sensitivity S ≥ 5000mv. ml/mg (n-hexadecane)
Increase amplification S ≥ 10000mv. ml/mg (n-hexadecane)
Noise ≤ 20UV linear range ≥ 104

Flame photometric detector (FPD):
Method: S or P filter
Sensitivity: 1 × 10-11g (s)/s (S in thiophene), 1.4 × 10-12g (p)/s (P in methyl parathion)

Electron Capture Detector (ECD):
Sensitivity: Mt ≤ 1 × 10-13g/ml (r-666)
Noise ≤ 15UV
Linear range ≥ 5 × 103
Radiation source Ni63