Main technical features
1. The instrument adopts Chinese large screen LCD liquid crystal Chinese character display technology, which displays intuitively, is easy to operate, and is more suitable for China's national conditions.
2. Self diagnostic function with "0 ℃" protection function. When the temperature display of any channel is always "0 ℃", the heating will automatically stop to prevent the heating element from being damaged due to the constant heating of the chamber And there are Chinese prompts for the cause of the fault and alarm prompts.
3. The touch keyboard facilitates users to set various operational data.
4. Data power-off protection function, the operating data set by the instrument can be saved for a long time after power failure.
5. Microcomputer controlled FID detector with automatic ignition and stopwatch timing function.
6. Equipped with over temperature protection device. It is extremely difficult for the temperature to exceed the set point, and the instrument will stop heating and report the fault on the display.
7. The instrument parameters are intuitively displayed on a large LCD Chinese monitor, and through a user-friendly software interface, it is greatly convenient for users to set parameters including various temperature, range, detector, bridge current, etc; Intuitively operate the switch bridge flow, turn on and off temperature control, turn on and off the lift and various time events functions.
8. The instrument computer is connected to the Internet and can be connected to the instrument through a remote computer to realize remote data collection and management. Improved the degree of freedom of the device and promoted its effective application in the laboratory.
9. The main control circuit adopts advanced microprocessors and large capacity memory, making data storage more reliable. The integrated design of measuring, controlling, and power supply on a single circuit board has improved the anti-interference and reliability of the instrument.
10. The temperature control circuit using a microprocessor achieves a temperature accuracy of 0.1 degrees for the controlled objects in each heating zone.
11. The intelligent dual rear door technology ensures good temperature control accuracy of the instrument column box and can quickly cool down.

12. Eighth order programmed heating is suitable for the analysis of complex samples with wide boiling points.

2. Column temperature box parameters:
Temperature control accuracy: accuracy ± 0.1 ℃ at room temperature between 5 ℃ and 420 ℃.
Column temperature box volume: 280mm × 280mm × 250mm.
Program heating order: eight orders.
Program heating rate: 1 ℃ -50 ℃.
Constant temperature holding time for each stage: 0-300min (1min increments).
Automatic rear door design ensures rapid cooling.
A high-power, low-noise rotating fan ensures temperature uniformity.
3. Stable dual air system:
The carrier gas flow rate adopts a dual stability design of first stabilizing and then stabilizing the flow.
Accurate scale type pneumatic control valve components with high reproducibility and stability.
4. Multiple injection methods are available:
Fill the column head for injection.
Filling column gasification injection.
Capillary diversion/non diversion injection: back pressure valve control technology, linear diversion.
Six way valve gas injection.               
Technical specifications of detector
Hydrogen flame ionization detector (FID)
Detection limit: Mt ≤ 5 × 10-12g/s (n-hexadecane);
Noise: ≤ 2 × 10-14A (0.02mv)
Drift: ≤ 1.5 × 10-13A/30min (0.15mv/0.5h)
● Linear range: ≥ 107
Maximum operating temperature: ≤ 450 ℃
Thermal conductivity detector (TCD)
Sensitivity: S ≥ 5000mV. ml/mg (n-hexadecane)
Noise: ≤ 20 μ V
Baseline drift: ≤ 150 μ v/30min
Electron Capture Detector (ECD)
Detection limit: ≤ 2 × 10-14g/ml
● Linear range: 104
● Radioactive source: 63Ni
Flame photometric detector (FPD)
Detection limit: (P) ≤ 2 × 10-12g/s; (S)≤5×10-12g/s
● Linear range: 105 (P) 103 (S)
Nitrogen phosphorus detector (NPD)
Detection limit: (N) ≤ 5 × 10-12g/s; (S)≤5×10-12g/s

13. Unit based overall structural design, easy to install and maintain.
14. Large volume column box, capable of installing four chromatography columns simultaneously.
15. The instrument design is reasonable and flexible, capable of installing three types of detectors simultaneously, and has independent circuit systems and signal output terminals.
16. Flexible packed column and capillary column system, capable of connecting capillary columns of different diameters.
17. It has gas cutoff protection and Chinese prompt function, which can maximize the protection of TCD tungsten wire and chromatographic column from damage.
18. Equipped with multiple detectors such as FID, TCD, ECD, FPD, etc.
Specification
1. Temperature control indicators:
Column box: accuracy ± 0.1 ℃ (measured at 200 ℃) at room temperature between 5 ℃ and 420 ℃.
Sample injector: Accuracy ± 0.1 ℃ at room temperature between 5 ℃ and 420 ℃ (measured at 200 ℃).
Detector: Accuracy ± 0.1 ℃ at room temperature between 5 ℃ and 420 ℃ (measured at 200 ℃).
Up to six temperature control channels: suitable for multiple temperature control requirements such as installing conversion furnaces.