Chromatographic Analysis System Power Transformer 
 Determination by gas chromatography gas dissolved in insulating oil component content, is made in the operation of power supply enterprises to determine whether there is oil-filled electrical equipment latent heat, spark failure to protect the power grid to run an effective means of safe and effective. Also the oil-filled electrical equipment manufacturers test their equipment for the factory means necessary. 
 GC-9310SD chromatographic analysis of transformer oil system uses an injection, double column in parallel, a shunt flow of the three detectors, equipped with TCD detector and two FID detectors, of which H2 and O2 detection by TCD; hydrocarbon gases (methane, ethylene, ethane, acetylene) detection by FID1, CO, CO2 detection by FID2 to overcome a lot of CO, CO2 on the impact of hydrocarbon gases, in particular the impact of acetylene. 
 1, the minimum detectable amount of: an injection, when the injection volume was 1mL minimum detectable concentration: 
 Dissolved gas analysis (uL / L) 
 H2 CO CO2 CH4 C2H4 C2H6 C2H2 
 2 2 2 0.1 0.1 0.1 0.1 

 (1) qualitative Repeatability: ≤ 1% deviation 
 (2) quantitative repeatability: ≤ 3% deviation 
 2, thermal conductivity detector (TCD) 
 Semi-proliferation structure ◎ 
 ◎ power constant current control mode 
 ◎ Sensitivity: S ≥ 3000mv.ml/mg (hexadecane / iso Fortunately, alkyl) 
 ◎ baseline noise: ≤ 20μv 
 ◎ baseline drift: ≤ 50μv/30min 
 ◎ Linear: ≥ 105 
 ◎ carrier gas flow rate stability: ≤ 1%. 
 3, the flame ionization detector (FID) 
 ◎ collector with cylindrical structure, the quartz nozzle 
 ◎ detection limit: ≤ 8 × 10-12g / s (n-hexadecane / iso Fortunately, alkyl) 
 ◎ baseline noise: 5 × 10-14A 
 ◎ baseline drift: ≤ 2 × 10-13A/30min 
 ◎ Linear: ≥ 107 
 ◎ automatic ignition 
 ◎ 10min settling time 

 Main technical characteristics: 
 1. High accuracy, stable and reliable temperature control system: 
 ◎ instrument control circuit uses feature advanced microprocessors, large-scale integrated circuits, advanced chip packaging, the circuit structure of a close and stable; large capacity FLASH and EEPROM memory used, so that the preservation of more reliable data. At the same time the integration of the main control circuit board design to improve the instrument's noise immunity and reliability. 
 ◎ microprocessor-controlled temperature control circuit, Rd precision control system, in which the oven temperature to achieve five-stage process to ensure that the customers wide boiling range analysis of complex samples; each charged with the heating zone temperature control accuracy advantages to ± 0.1 ℃ (200 ℃ when the test). 
 ◎ oven with dual over-temperature protection; any one of the heating zone temperature exceeds the set limit, the instrument will automatically shut down protection and fault location can be displayed directly to facilitate your maintenance and repair. 
 After the door ◎ intelligent technology to ensure the instrument oven temperature close to room temperature, also have a good working temperature control accuracy and fast cooling. 
 2. Human design, Chinese menu, popular easy to learn, more suitable for China: 
 ◎ instrument used blue backlit display (LCD) liquid crystal display, Chinese menu, display and intuitive to learn, easy to operate. 
 ◎ Self-diagnosis, fault alarm, the LCD screen can be displayed directly on the fault position. 
 ◎ touch keypad for easy operation of the apparatus of the data set. 
 ◎ instrument with power protection function, the parameters set by the long-term preservation, after a power outage. 
 ◎ have a stopwatch function. 
 ◎ host comes with three-way valve control system to facilitate the implementation and completion of the injection line to switch the automatic cleaning of all kinds. 
 3. Double precision pneumatic control and stability systems. 
 ◎ carrier gas after the gas regulator using the first stable steady flow of gas system of double 
 ◎ flow control valve knob with digital, visual and reliability. 
 ◎ column pressure gauges are shown in 
 1. Standard oven temperature indicators: 
 ◎ oven temperature range: room temperature on a 15 ° C ~ 399 ° C (increments of 1 ° C) 
 ◎ oven temperature control accuracy: better than ± 0.1 ° C (200 ° C when measured) 
 ◎ oven temperature program: fifth-order process l 
 ◎ rate setting process liters: 0.1 ° C ~ 40 ° C / min (increments of 1 ° C), 200 ° C when measured 
 ◎ The order holding time: 0 ~ 655min (incremental 1min) 
 2. Injector, detector, thermal conductivity cell temperature index 
 ◎ 1) Temperature range: room temperature on a 15 ° C ~ 399 ° C (increments of 1 ° C) 
 ◎ 2) Temperature accuracy: better than ± 0.1 ° C (200 ° C when measured) 
 3. Thermal conductivity detector (TCD) 
 Semi-proliferation structure ◎ 
 ◎ power constant current control mode 
 ◎ Sensitivity: S ≥ 3000mv.ml/mg (hexadecane / iso Fortunately, alkyl) 
 ◎ baseline noise: ≤ 20μv 
 ◎ baseline drift: ≤ 50μv/30min 
 ◎ Linear: ≥ 105 
 ◎ carrier gas flow rate stability: ≤ 1%. 
 4. Flame ionization detector (FID) 
 ◎ collector with cylindrical structure, the quartz nozzle 
 ◎ detection limit: ≤ 8 × 10-12g / s (n-hexadecane / iso Fortunately, alkyl) 
 ◎ baseline noise: 5 × 10-14A 
 ◎ baseline drift: ≤ 2 × 10-13A/30min 
 ◎ Linear: ≥ 107 
 ◎ automatic ignition 
 Equipment requirements 
 ◎ Power supply voltage: 220V ~ ± 22V 50Hz ± 0.5Hz 
 ◎ rated power: <1800W 
 ◎ Ambient temperature: +5 ° C ~ +35 ° C 
 ◎ Relative humidity: ≤ 85% 
 ◎ equipment shall not be placed where there is corrosive gas and affect the normal operation of the electric or magnetic fields exist, the instrument should be placed in a solid bench, without vibration. Less than 2m away from the hydrogen gas bottle may not have electric and fire. 
 Featured dedicated workstation 
 CDMC-21A2 dedicated chromatography workstation power system is based on windows XP system, latest generation of chromatography workstation development, is the professional design with the power of practical data processing system, its failure to determine compliance with the latest national standards, data collection using 24-bit precision USB interface data acquisition card, enter the range of up-2v ~ +2 v, resolution +1 μV. The main performance is as follows: 
 First, the hardware performance: 
 (1) High: USB interface, 24-bit precision A / D data acquisition card, resolution ± 1uv 
 (2) input channel level range: external data acquisition box, input channel 2. -1v to +1 v (Extensible ± 2V) 
 (3) The integral sensitivity: 1μv · sec (ie the area in the single digits) 
 (4) Dynamic range: 106 (1μv as the smallest unit) 
 (5) Linearity: <± 0.1% 
 (6) reproducibility: 0.06% 
 Second, the software performance: 
 (1) easy operation: Chinese WIN9X, XP operating platform, the entire Chinese window interface and real-time operating tips and online help, user learning to use. 
 (2) open data management: save full information and analysis related equipment data. Easy to add, modify, delete, free access to, retrieval. The analysis of retrieved data can be exported to Word templates to print, user do all kinds of summary reports. Open data format for multi-user data sharing, facilitate access to other database management software, and management search needs. (3) flexible peak identification and processing power: You can set the parameters and time to manually fix the way procedures or identification of peaks, delete, and adjust the baseline cut. To ensure the accuracy of analytical results. 
 (4) equipment management function: Introduction and intuitive device management to set the user's card, the results stored according to different categories of equipment, so that the management of data at a glance! 
 (5) Flexible printing functions: to provide a fixed format and the results of the custom report template format. 
 (6) Automatic fault diagnosis: analysis of the end of excessive prompted automatically to provide consistent national standard three ratio diagnostics, TD icon, the concentration of component icons, David triangles and other troubleshooting methods. 
 (7) Easy characterization: the peak can be identified automatically or manually edit the table. Automatically calculate the correction factor can be adjusted several times the average. 
 (8) Data icon: According to historical records have been put in storage, visual displays of historical data in a device the concentration of each component in the trend.