1. Product introduction

In order to control and monitor the indoor air quality of civil construction projects, the state has formulated GB50325-2001 "Indoor Environmental Pollution Control Specifications for Civil Construction Projects", which stipulates the use of gas chromatography to determine the content of benzene and TVOC. TVOC refers to the total amount of volatile organic compounds with a boiling point lower than or equal to 250°C measured in the air under normal pressure conditions. Mainly used in: environmental protection, food fermentation, petroleum processing, organic chemistry, cutting-edge science and other industries analysis and research.

2. Product Features

Main performance features:
1. The large screen displays in both Chinese and English, the screen switching is simple and clear, and the appearance is fashionable and beautiful.
2. Perfect intelligent multi-dimensional chromatographic system, ARM9-32-bit chip and foreign original software, wide heating rate, fast cooling system, high stability temperature control technology.
3. Perfect self-diagnosis function, which can easily check the fault location and fault type.
4. Perfect temperature overheat protection and platinum wire resistance open-circuit and short-circuit alarm functions to ensure that the temperature does not get out of control.
5. Optional built-in AD conversion circuit to directly output digital signals.
6. The reverse control function can be realized, and the setting and analysis control of all parameters can be completed on the PC.
7. Under the condition of dry ice or liquid nitrogen, negative temperature operation can be realized, supporting a wide range of temperature control from -80°C to 450°C.
8. Within 180°C, the oven control accuracy is as high as ±0.01°C.
9. Two packed columns and one capillary column can be installed at the same time, or two sets of capillary columns can be installed at the same time.
10. Double thermal conductivity, double FID, or thermal conductivity and hydrogen flame can be realized at the same time.
11. Three detectors and methane reformers can be installed simultaneously.
12. Optional functions such as manual injection, automatic start of injection device, and automatic ignition.
13. The instrument has the function of automatic power failure protection when gas is cut off.
14. Six-way temperature control, seven-step temperature program, independent temperature control of capillary and packed column vaporization chamber, intelligent double back door.
15. The instrument adopts a 5.7-inch color screen display, which can display two spectral graphs at the same time; it has the function of automatic flow display.
16. External equipment such as headspace sampler, thermal desorption instrument, liquid autosampler, gas autosampler valve can be used.

3. Product parameters

1. Column oven temperature control range: room temperature 5°C-400°C (set in increments of 0.1°C).
2. Temperature accuracy: not more than ±0.1℃.
3. Temperature gradient: ±1°C (100°C-360°C temperature program).
4. Heating rate: 0.1°C-40°C/min (set in increments of 0.1°C).

5. The temperature control range of the injection port and detector: room temperature +10℃-400℃.

6. Voltage 220V±10%, high power 2200W.

4. Detector technical indicators

Hydrogen flame ionization detector (FID)

       ● Detection limit: Mt≤8×10-12g/s (n-hexadecane);
       ● Noise: ≤5×10-14A
       ● Drift: ≤1×10-13A/30min
       ● Linear range: ≥106
       ● High operating temperature : ≤450℃

5. Configuration list