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NR7500 Series Gas Chromatography Analyzer

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NR7500 Series Gas Chromatography Analyzer

Transformer oil gas chromatography analyzer is suitable for the determination of the content of dissolved gas components in the insulating oil of the power system. It can complete the full analysis of the content of the 7 gas components dissolved in the insulating oil with one sample injection, and its minimum detection concentration of acetylene is up to 0.1ppm. The instrument is equipped with a large-screen LCD liquid crystal display interface, menu-style Chinese operation, intuitive display and convenient operation. The instrument adopts a dual-column parallel shunt system, equipped with a thermal conductivity detector, a dual hydrogen flame detector and a methane converter, and can complete the full analysis of H2, O2, CO2, CH4, C2H2, C2H4, and C2H6 in one injection.
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Product Description

  Transformer oil gas chromatography analyzer is suitable for the determination of the content of dissolved gas components in the insulating oil of the power system. It can complete the full analysis of the content of the 7 gas components dissolved in the insulating oil with one sample injection, and its minimum detection concentration of acetylene is up to 0.1ppm. The instrument is equipped with a large-screen LCD liquid crystal display interface, menu-style Chinese operation, intuitive display and convenient operation. The instrument adopts a dual-column parallel shunt system, equipped with a thermal conductivity detector, a dual hydrogen flame detector and a methane converter, and can complete the full analysis of H2, O2, CO2, CH4, C2H2, C2H4, and C2H6 in one injection.

Main Feature

  ◆ Use 320 x 240 dot matrix 5.7 inches large LCD Chinese display, real-time display of temperature and operating conditions of various channels, clear and intuitive content;

  ◆ Power-on self-test, wide-range self-diagnosis function, can accurately determine the fault location and alarm;

  ◆ Six-channel independent temperature control (the vaporization chamber and capillary vaporization chamber can independently control the temperature), eight-step temperature program function;

  ◆ Over-temperature protection function: If any channel exceeds the set temperature, the instrument will automatically power off and alarm;

  ◆ The unique vertical heating device makes the sample vaporization more reliable, minimizes the heat radiation generated by the vaporization chamber, and ensures that the temperature deviation in the oven is extremely small;

  ◆ High-precision dual-stable gas circuit, four detectors can be installed at the same time.

Technical Parameters

  ◆ Temperature control index

  Temperature control range: room temperature 5℃~400℃ increment 0.1℃

  Temperature control accuracy: better than ±0.01℃

  Program heating: constant temperature time between steps 0~999min increment 0.1min temperature increment 0.1℃

  Heating rate: max. 40°C/min at 200°C and max. 20°C/min at 200°C

  ◆ The main technical indicators of the detector

  Hydrogen flame ionization detector (FID)

  1) Cylindrical collector structure design, quartz nozzle, extremely high response

  2) Detection limit: ≤8×10g/s (n-hexadecane/iso-octane)

  3) Baseline noise: ≤2×10A

  ◆ Thermal conductivity detector (TCD)

  1) Adopt a semi-diffusion structure

  2) The power supply adopts constant current control method

  3) Sensitivity: ≥8000mV•ml/mg (n-hexadecane/iso-octane)

  4) Baseline noise: ≤20μV

Keyword:
Test part of cable and arrester
Comprehensive test part
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