Gas chromatography analyzer

Main performance characteristics:

1. Using a 320 x 240 dot matrix 5.7-inch large LCD Chinese display, real-time display of various temperatures and operating conditions, perfectly achieving online monitoring;

2. Power on self-test, six independent temperature control (independent temperature control for vaporization chamber and capillary vaporization chamber), and fifth order programmed heating function;

3. Wide range self diagnosis function, when the instrument malfunctions, it will automatically display the fault phenomenon, fault code, fault cause in Chinese, assist in quickly finding and solving the fault, and ensure that the laboratory is in good working condition;

4. Over temperature expansion function: If any circuit exceeds the set temperature, the instrument will automatically shut down and alarm;

5. The carrier gas cut-off and leakage protection function automatically cuts off the power supply and stops heating when the carrier gas pressure is insufficient, effectively protecting the chromatographic column and thermal conductivity detector from damage;

6. The intelligent fuzzy control rear door opening system automatically tracks temperature and dynamically adjusts the angle of the air door, achieving precise temperature control even near room temperature;

7. Advanced gas path process can achieve simultaneous use of hydrogen flame detector, thermal conductivity detector, and conversion furnace;

8. High performance detectors and methane conversion furnaces, with detection capabilities that fully meet the requirements of the Ministry of Electric Power for the determination of gas component content in transformer oil;

9. Adopting a secondary diversion column system, the analysis speed is fast and the reproducibility is good;

10. The instrument has undergone sufficient aging testing before leaving the factory, and all parameters have been set. Users only need to perform a simple on/off operation, making it extremely convenient to operate and use.

Temperature control indicators:

1. Temperature control range: room temperature+5 ℃~400 ℃ with an increment of 0.1 ℃

2. Temperature control accuracy: better than ± 1 ℃

3. Analysis cycle:<15 minutes

4. Program heating: fifth order

5. Carrier gas: high-purity nitrogen (purity ≥ 99.999%)

6. FID detection line mt ≤ 1 × 10-11g/s (benzene) noise ≤ 0.03mv

TCD sensitivity S ≥ 10000mv.ml/mg (benzene) noise ≤ 0.03mv

To ensure the safe operation of transformers, there are many different detection methods both domestically and internationally. Among them, gas chromatography is used to detect the content of various dissolved gases in insulation oil, in order to determine the type and severity of internal faults in oil filled electrical equipment. Insulating oil can decompose into hydrogen, carbon monoxide, carbon dioxide, and various small molecule hydrocarbon gases under the action of heat and electricity. The type and severity of internal faults in oil filled equipment are closely related to the composition and gas production rate of these gases< According to the Guidelines for Dissolved Gas and Determination in Variable Pressure Gasoline, if the content of each gas component in the chromatographic analysis of oil shows an increasing trend or exceeds the attention value, the gas production rate should be closely observed to preliminarily determine whether there is overheating or discharge fault. At present, transformer oil dedicated chromatograph has become an essential detection equipment for fault tracking of oil filling equipment in the power system and ensuring the safe operation of the power grid.

Advanced chromatography column installation mode: Using three chromatography columns and three detectors (FID I.TCD. Methane Conversion Furnace FIDII) process, it can measure the complete analysis of eight gas components in transformer oil, including hydrogen, oxygen, methane, ethylene, ethane, acetylene, carbon monoxide, and carbon dioxide, with one injection, which is convenient and fast.