Transformer equipment is the most critical component in substations, with most electrical devices using oil-paper or a combination of oil and cardboard for insulation. When thermal faults, discharge faults, or aging of oil-paper occur inside the equipment, various gases (such as hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, acetylene, etc.) are produced. These gases dissolve in the oil, so testing and analyzing transformer oil based on the determination of its gas components and concentrations is an effective method for power generation and supply companies to judge whether oil-filled electrical equipment operates safely and effectively. It is also a necessary method for manufacturers to inspect their equipment before leaving the factory.

The KGC-1189 Insulating Oil Gas Chromatography Analyzer is suitable for measuring the dissolved gas components in insulating oil within power systems. A single injection can complete the full analysis of seven dissolved gases: H2, CO, CO2, CH4, C2H4, C2H6, C2H2 (hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, acetylene). The minimum detection concentration for acetylene reaches 0.1 ppm.

Mainly Detected Gases: H2, CO, CO2, CH4, C2H4, C2H6, C2H2 as primary fault indicators. It is recommended to also detect O2, N2 as auxiliary indicators (i.e., nine gases in total).

• Utilizing built-in reverse control technology to achieve intuitive display of instrument gas pressures: All gas pressures of the KGC-1189 are digitally displayed via pressure sensors. Through the workstation, direct readings of carrier gas, hydrogen, and air pressures can be obtained, allowing real-time grasp of analysis conditions.

• Implementing reverse control technology for setting and displaying instrument temperatures: All temperature parameters of the KGC-1189 are digitally displayed. Through the workstation, temperatures of components such as the column oven, detector, and converter furnace can be directly read and controlled, making operations simple and clear.

• Employing reverse control technology to achieve one-click startup: Operations like heating and cooling in the KGC-1189 can be realized through touchscreen clicks, completely abandoning the cumbersome operations previously required in laboratory chromatography, essentially achieving one-click startup.

• Computer-controlled ignition and current settings: The KGC-1189 is equipped with an automatic gas flow control device that automatically releases a portion of air when you perform ignition operations on your computer, adjusting the ratio of hydrogen to air to a suitable ignition proportion, and restores this ratio after automatic ignition. Similarly, the thermal conductivity bridge current settings can be completed through the bridge current setting window in the workstation software.

• Digital FID electronic zero adjustment technology enhances the instrument's anti-interference capability: The FID detector signal zero adjustment of the KGC-1189 uses electronic zero adjustment technology, employing high-precision digital circuits for baseline compensation of the FID, achieving electronic regulation of the FID output signal level. Since electronic adjustment can be directly installed on the circuit board's signal channel, it improves electronic noise suppression capabilities without interference signals from mechanical potentiometer connections. This reduces parasitic parameters, thus providing strong anti-interference capability.

• Thermal conductivity tungsten wire breakage gas protection function: The KGC-1189 features intelligent thermal conductivity breakage gas protection. When the carrier gas pressure falls below a safe threshold, the system automatically cuts off the thermal conductivity current to protect the thermal conductivity detector from damage.

Detector Technical Specifications:

• Hydrogen Flame Ionization Detector (FID)
• Detection limit: Mt≤3×10⁻¹²g/s (n-hexadecane-isooctane solution);
• Noise: ≤5×10⁻¹⁴A
• Drift: ≤1×10⁻¹³A/30min
• Linear range: ≥10⁶

Thermal Conductivity Detector (TCD):

• Sensitivity: S≥3500mV•ml/mg (standard), 5000mV•ml/mg (high sensitivity)
• Noise: ≤10μV
• Baseline drift: ≤30μV/30min
• Linear range: ≥10⁴

Temperature Control Specifications:

Other Parameters:

• Dimensions: 570×510×470mm
• Weight: <55kg
• Power Supply: AC220V±10%, 50Hz
• Operating Temperature: 5-35℃
• Relative Humidity: ≤85%
• Power Consumption: ≤2000W