The determination of dissolved gas content in insulating oil by gas chromatography is an effective means for power generation and supply enterprises to determine whether there are latent overheating, discharge and other faults in oil filled power equipment during operation, in order to ensure the safe and effective operation of the power grid. It is also a necessary means for oil filled electrical equipment manufacturers to conduct factory inspections of their equipment.
GC-9560Transformer oil spectrophotometerIt is a new type of digital fully controlled chromatograph launched by Shanghai Huaai Chromatography Analysis Technology Co., Ltd. The instrument adopts a large screen LCD Chinese LCD display, computer reverse control technology, and a dedicated chromatographic workstation that integrates data acquisition, data management, and instrument control functions. It is the first gas chromatograph in China to implement computer reverse control technology.
Adopting a three detector process with single injection and dual column parallel connection, equipped with TCD detector and two FID detectors, where H₂And O₂Through TCD detection; Hydrocarbon gases (methane, ethylene, ethane, acetylene) pass through FID₁testing, CO、CO₂Through FID₂Tested and overcame a large amount of CO, CO₂The impact on hydrocarbon gases, especially acetylene, has a detection limit of up to 0.05 ppm for acetylene.
Execution standards:
GB/T 17623-1998 "Determination of dissolved gas components in insulating oil by gas chromatography"
GB/T 7252-2001 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"
DL/T 722-2000 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil"
flow chart:

GC-9560Transformer oil spectrophotometerPerformance indicators:

(1) Small detection measurement: When the injection volume is 1mL, the small detection concentration in the oil is:

(2) Qualitative repeatability: Deviation ≤ 1%

(3) Quantitative repeatability: Deviation ≤ 3%

GC-9560The main technical features are:

1. Realize real-time computer control and data processing:

(1) By connecting the built-in digital interface of the instrument, the GC-9560 data acquisition and control software in the computer can display the chromatogram in real time and read the current status and parameter settings of the instrument;

(2) Through a user-friendly software interface, it is convenient for users to set parameters including temperature, range, detector, bridge current, etc; Intuitive operation includes functions such as FID automatic ignition, switching bridge current, opening and closing temperature control, and various time events;

(3) The instrument can be extended with a 10/100M Ethernet interface and can be connected to the instrument through a remote computer to achieve remote data acquisition and management. Improved the degree of freedom of the device and promoted its effective application in the laboratory.

2. High precision, stable and reliable temperature control system:

(1) The main control circuit adopts advanced microprocessors, large capacity FLASH and EEPROM memory to make data storage more reliable; The integrated design of measuring, controlling, and power supply on one circuit board improves the anti-interference and reliability of the instrument;

(2) Using a temperature control circuit with a microprocessor, the temperature accuracy of the controlled objects in each heating zone reaches 0.1 degrees;
(3) The column box has dual over temperature protection devices. If any temperature exceeds the set limit, the instrument will stop heating and report the faulty area on the display;

(4) The intelligent dual rear door technology ensures good temperature control accuracy and rapid cooling of the instrument even when the column box temperature is close to room temperature;

3. A concise and clear human-machine dialogue interface, easy to operate, easy to learn and use

(1) The instrument adopts large screen LCD Chinese character display technology, which is intuitive, easy to operate, and more suitable for China's national conditions;

(2) Self diagnostic function, able to display the location of the fault;

(3) Touch sensitive keyboard facilitates users to set various operation 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) Equipped with a stopwatch function;

(6) Storage function for ten analysis parameters, suitable for multi sample analysis scenarios.

GC-9560Main technical indicators:

1. Hydrogen flame ionization detector (FID):

(1) Cylindrical collection electrode structure design, quartz nozzle, extremely responsive

(2) Detection limit: ≤ 8 × 10^-12G/s (n-hexadecane/isooctane)

(3) Baseline noise: ≤ 2 × 10^-13A

(4) Baseline drift: ≤ 2 × 10^-12A/30min

(5) Linear: ≥ 10⁶

(6) Automatic ignition

(7) Stable time: Ten minutes

2. Thermal conductivity detector (TCD):

(1) Adopting a semi diffusive structure

(2) The power supply adopts constant current control mode

(3) Sensitivity: ≥ 2500mV · ml/mg (n-hexadecane/isooctane).

(4) Baseline noise: ≤ 20 μ V.

(5) Baseline drift: ≤ 100 μ V/30min.

(6) Linear ≥ 10⁴

3. Large screen LCD display:

(1) Clearly display the set values, measured values, and protection values of each temperature channel

(2) Real time display of instrument status

(3) Touch sensitive keyboard, menu based operation

(4) Can be ignited through the keyboard and connected to the bridge current

(5) Storage function for ten analytical parameters

3. Temperature control indicators:

(1) Column box: 8 ℃~399 ℃ at room temperature with an accuracy of ± 0.1 ℃

(2) Sample injector: 8 ℃~399 ℃ at room temperature with an accuracy of ± 0.1 ℃

(3) Detector: Accuracy ± 0.1 ℃ at room temperature ranging from 8 ℃ to 399 ℃

(4) Converter: 8 ℃~399 ℃ at room temperature with an accuracy of ± 0.1 ℃

4. Other parameters:

(1) Dimensions: Width 655mm x Height 50mm x Depth 480mm

(2) Weight:~48kg

(3) Power supply: 220V ± 22V, 50Hz, power ≥ 2kW

A fully functional dedicated chromatography workstation

GC-9560V4.0The specialized chromatography workstation for power systems is a generation of chromatography workstations developed based on the Windows XP system. It is a professionally designed practical data processing system with powerful functions. Its fault diagnosis complies with national standards, and data acquisition uses a 24 bit high-precision USB interface data acquisition card with an input range of -2v~2v and a resolution of 1 μ V. The main performance is as follows:

1. Easy to operate：Chinese WIN9X, XP operating platform, fully Chinese window interface, real-time operation prompts and online help, convenient for users to learn and use.

2. Open data management: Save complete device information and analysis result data information. Easy to add, modify, delete, and retrieve at will. The retrieved analysis result data can be output to a Word template for printing, making it convenient for users to create various summary reports. Open data format, suitable for multi-user data sharing, facilitating access by other database management software and meeting the retrieval needs of management departments.
3. Flexible peak recognition and processing capabilities: Chromatographic peaks can be identified, deleted, and baseline cut adjusted by setting parameters and time programs or manually modifying methods. Ensure the accuracy of the analysis results.

4. Device management function: A simple and intuitive way to set up user device management cards, analyze results and save them according to different device categories, making data management clear!

5. Flexible printing function: Provides result reports in both fixed format and custom template formats.

6. Automatic fault diagnosis: automatic over limit prompt after analysis, providing three ratio diagnosis that meets national standards, TD diagram, component concentration diagram, David triangle and other multiple fault diagnosis methods.

7. Easy qualitative analysis: The peak identification table can be automatically or manually edited. Automatically calculate correction factors and perform multiple average corrections.

8. Data visualization: Based on the historical records already stored, visually display the concentration trend chart of each component in the historical data of a certain device.