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E-mail
18612919058@163.com
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Phone
18612919058
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Address
No. 86 Wanxing Road, Changyang, Fangshan District, Beijing
Beijing Zongheng Jinding Instrument Equipment Co., Ltd
Precautions for Accurate Testing of Insulated Oil Gas Chromatography
Date: 2025-07-31Read: 2
Sampling and Preservation
Oil samples should be sealed and stored away from light to avoid contamination or oxidation, ensuring sample representativeness.
Instrument calibration and parameter setting
Regularly calibrate the gas chromatograph with standard gases to ensure that the sensitivity of detectors (such as TCD, FID) meets the requirements (such as FID for acetylene detection limit<0.1ppm)When setting parameters, it is necessary to optimize column temperature, carrier gas flow rate, etc. to avoid baseline drift affecting the results.
Selection of degassing method
Prioritize the use of dissolution equilibrium method or vacuum degassing method to avoid gas loss or cross interference caused by different methods.
Temperature control and preheating
The temperature of the chromatographic column should be within the range of room temperature+15 ℃~350 ℃, with a temperature control accuracy of ± 0.1~0.2 ℃. The detector temperature should match the analysis requirementsAfter starting up, fully preheat to ensure that the temperature of each component is uniform and stable.
Safe operation and environment
When using hydrogen, it is necessary to ventilate and check for leaks. The experimental area should be kept away from strong magnetic fields and flammable materialsThe instrument should be placed in an environment with constant temperature (15 ℃ -35 ℃), dust-free, and moderate humidity.
Data analysis and maintenance
Based on historical data of the equipment, comprehensively determine the type of fault (such as methane and ethylene as characteristic gases for overheating faults, and hydrogen and acetylene as characteristic gases for discharge faults)Regularly maintain the chromatography column, clean the instrument, and check the sealing of the gas path
