Product Introduction:

Instrument Introduction

The gas chromatography method is used to determine the component content of dissolved gases in insulating oil. It is an effective means for power generation and supply enterprises to determine whether there are latent overheating, discharge and other faults in oil filled electrical 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.

The GC-7900 power transformer oil specific chromatograph adopts the three detector process recommended by the national standard, and can complete the analysis of dissolved gases (including H) in insulation oil with one injection₂、CH₄、C₂H₄、C₂H₆、C₂H₂、CO和CO₂）Complete analysis of content.

The process design of the GC-7900 transformer oil chromatographic analysis system fully complies with the relevant chromatographic process design provisions in the Chinese power industry standards DL/T 703-1999 "Gas Chromatography Determination of Gas Content in Insulation Oil" and GB/T7252-2001 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil". The instrument is equipped with a highly sensitive thermal conductivity detector, hydrogen flame ionization detector, and nickel catalyst converter, which can detect seven gas components dissolved in transformer oil: H₂、CH₄、C₂H₄、C₂H₆、C₂H₂、CO和CO₂All tests have been conducted, and its performance fully meets the requirements of the corresponding national standards for gas chromatographs.

Instrument Features

Powerful data transmission function

The instrument adopts Internet communication technology, and can easily form a local area network to realize remote data transmission, remote control, and remote diagnosis. The program can be automatically upgraded.

Large screen LCD with switching display between Chinese and English

Fully computerized button operation, 5.7-inch large screen, 13 line LCD display in both Chinese and English (switchable), human-machine dialogue mode, easy to operate.

Thermal conductivity pool detector gas cut-off protection

In the event of gas interruption or leakage in the carrier gas of the chromatograph, the system will automatically cut off the bridge flow of TCD to protect the thermal sensing element of the thermal conductivity cell detector.

Precise temperature control system

The new integrated digital circuit has high control accuracy, stable and reliable performance, ensuring that the temperature control accuracy of the instrument can reach 0.1 ℃.

self-diagnostic function

It has powerful and comprehensive startup self diagnostic function, intuitive display of fault information, power-off storage protection function, keyboard locking function, and anti power interference function.

Anti pollution chromatographic column

The use of transformer oil specific anti pollution composite chromatography column technology greatly improves the service life of the chromatography column.

easy to operate

The instrument undergoes strict aging testing before leaving the factory, and all parameters have been set. Users only need to perform simple startup operations.

Instrument configuration

GC-7900 gas chromatograph +Special workstation for power system +Specialized oscillator +Nitrogen, air, and hydrogen gas sources +Standard gas

Specialized oscillator

Typical spectrogram