The insulation oil chromatograph, also known as the transformer oil analyzer, is a gas chromatograph developed according to national standards. Using gas chromatography analysis, the content of dissolved gases in transformer insulation oil can be analyzed, mainly including hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide, carbon dioxide, etc. The total sum of four gases, methane, ethane, ethylene, and acetylene, is called total hydrocarbons. Analyzing the content of these gases can determine whether the internal state of the transformer is normal
Operation method of insulating oil chromatograph:
Introduction to Instruments, Equipment, and Materials:
One of the following instruments can be used to extract dissolved gases from oil
Constant temperature timed oscillator: reciprocating oscillation frequency 275 times/min ± 5 times/min, amplitude 35mm ± 3mm, temperature control accuracy ± 0.3 ℃, timing accuracy ± 2min
Automatic full degassing device for variable diameter piston pump: The residual pressure of the system vacuum degree is not higher than 13.3Pa, and the maximum vacuum degree of the rotary vane vacuum pump used is 0.067 Pa
Gas chromatograph for dissolved gases in insulating oil:
Instrument configuration:

5.4 Glass Syringe

100mL, 5mL, 1mL medical or glass syringes Good air tightness, flexible core plug without jamming, scale calibrated by weight method The mechanical oscillation method uses a 100mL syringe, and the 40.0mL mark should be calibrated. The airtightness test can be performed by taking an oil sample with detectable hydrogen content using a glass syringe, storing it for at least two weeks, and analyzing the hydrogen content in the sample at the beginning and end of storage to test the airtightness of the syringe Qualified syringes are allowed to lose less than 2.5% hydrogen per week
5.5 Stainless steel injection needle
Dental No.5 needle or suitable medical needle
5.6 Double headed needle (mechanical oscillation method)
5.7 Rubber cap for syringes
Good elasticity, not breathable
5.8 Standard Mixed Gas
It should be prepared by units authorized by the national metrology department, with component concentration content, inspection certificate and valid use period The commonly used concentration is converted into the concentration of gas components based on the attention value for transformer fault diagnosis
5.9 Other gases (compressed gas cylinders or gas generators)
Nitrogen (or argon), with a purity of not less than 99.99%
Hydrogen: purity not less than 99.99% Air: Pure and oil-free

Insulation oil chromatography instruments in Jiangsu region: Nanjing, Wuxi, Xuzhou, Changzhou, Suzhou, Nantong, Lianyungang, Huai'an, Yancheng, Yangzhou, Zhenjiang, Taizhou Sales: