GC901
GC901 transformer oil chromatograph is a gas chromatograph for the determination of dissolved gas components in power insulating oil, the instrument adopts a three-detector process, with TCD detector and two FID detectors, a single injection of 7 gas components can complete the full analysis of the content of 7 dissolved gas components in the insulating oil, if necessary, it can also detect the content of O2 and N2. Among them, H2, O2, and N2 were detected by TCD; CO and CO2 are detected by FID1, and hydrocarbon gases (CH4, C2H4, C2H6, C2H2) are detected by FID2, which overcomes the influence of a large amount of CO and CO2 on hydrocarbon gases, especially C2H, shortens the detection time and greatly improves the detection sensitivity.
Features
Three injection options (oscillatory degassing, fast dynamic headspace, 16-position fully automated headspace injection)
Imported VICI columns
Imported AFP high-performance gas chromatography diaphragm valve
Three-detector process technology for all component separation
High-precision FID and TCD detectors (helium ion detectors can be customized)
Resistant to oil contamination for longer service life
Multi-column box separation system
Precisely controlled column box temperature (±0.1°C)
Classic application
This product is designed for the analysis of dissolved gas component content
Technical specifications
Technical Spec: | GC901 | |||||||
Reference standard: GB/T 17623-2017 Gas chromatography determination of dissolved gas component content in insulating oil | ||||||||
Meassurement principle | Gas chromatography | |||||||
Detectors | Thermal conductivity detector and hydrogen flame ionization detector | |||||||
Detect components | H2 | CO | CO2 | CH4 | C2H2 | C2H6 | C2H2 | |
Detect limits μL/L（ppm） | 2 | 2 | 2 | 0.1 | 0.1 | 0.1 | 0.1 | |
Helium purification | H2、O2、N2、CO、CO2 etc，Residual concentration：≤10ppb | |||||||
Injection switching valve | Long-life fast-switching solenoid valve（1million times，10ms） | |||||||
Low leakage rate 10-7 Pa•m3•s-1 | ||||||||
Integrated purge valve design | ||||||||
Calibration certificate (optional) | Calibration report of East China Institute of Metrology | |||||||
Technical performance | ||||||||
Analysis period | ＜7min | |||||||
Large errors | ＜3% | |||||||
Settling time | ＜100min | |||||||
Temperature-controlled parts | Temperature control range | Temperature control accuracy | ||||||
Column box | at room temperature 8℃-400℃ | ±0.1℃ | ||||||
Hydrogen Flame (FID) Detector | at room temperature 8℃-400℃ | ±0.1℃ | ||||||
Thermal conductivity (TCD) detector | at room temperature 8℃-400℃ | ±0.1℃ | ||||||
Ni Catalyst converter | at room temperature 8℃-400℃ | ±0.1℃ | ||||||
Operating temperature | 0 ～ ＋40℃ relative humidity 98% Non-condensing up to 2000 meters above sea level | |||||||
Storage temperature | -20 ~ ＋50℃ | |||||||
Parts | GC901 | HS-16 | ||||||
Size L*W*H | 510*440*310 mm | 310*220*300mm | ||||||
Weight | 30kg | 10kg | ||||||
Power supply | 200V±22V 50Hz | |||||||
Power | 500w | |||||||
More information
Imported VICI capillary columns
Imported 1/16 SS-316L Stainless Steel Capillary Tube (Perfectly Cut, No Burrs)
VCR sealed junction column
316L stainless steel full tube connection
AFP High Performance Gas Chromatography Diaphragm Valve
The only diaphragm valve with a built-in patented purge system
Provide a negative pressure environment
Eliminate the effect of air leakage on the analysis results of the sample
The 12/16 position fully automated headspace sampler (HS-12/HS-16) can be integrated
10ml and 20ml headspace bottles can be used to meet a wide range of analytical requirements.
The starting and ending positions can be set freely to meet the special needs of the site.
Vial oscillation accelerates equilibration time, improves efficiency, and enhances sensitivity and reproducibility;
The 6-position sample heating position can be overlapped for significant analysis time savings.
Automatically detects missed vials to reduce sequence analysis confusion.
TCD 和 FID Detector
Thermal conductivity detectors（TCD） | Hydrogen flame ionization detector（FID） |
It adopts a semi-diffuse structure | Cylindrical collector structure design, quartz nozzle, extremely high response |
Autoignition; Settling time: 10 minutes | |
Sensitivity：≥2500mV·ml／mg | Limit of detection：≤8×10-12g／s |
Baseline noise：≤20μV | Baseline noise：≤2×10-13A |
Baseline drift：≤100μV/30min | Baseline drift：≤2×10-12A/30min |
Linear：≥105 | Linear：≥106 |
Composition analysis of dissolved gases in insulating oil
