portable gas chromatograph

1portable gas chromatographIntroduction:

GC-8890 Transformer Oil Chromatography Instrument is a high-performance chromatograph that is networked, fully reverse controlled, and has automatic control of gas path pressure and flow rate. By using a ten way valve to automatically cut and blow back, all nine gas components dissolved in transformer oil, including hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, and acetylene, can be measured in one injection.

IIportable gas chromatographMain performance characteristics:

1. The 10/100M adaptive Internet communication technology can be used to form a LAN and realize long-distance data transmission.

2. Reliable anti control technology, all instrument parameters can be remotely set through a computer and subjected to general image processing.

3. Digitally control all parameters of the gas path (flow and pressure), with three working modes: constant current, constant pressure, and split current.

4. Various parameter settings and operations of the instrument can be set using a beautiful and elegant touch screen or computer.

5. High performance detectors and methane converters with detection capabilities that meet the requirements of the Ministry of Electric Power for measuring gas content in transformer oil.

6. Adopting a new type of column packing and a dual column temperature process, the detection time of C2H2 is advanced, the sensitivity is high, and the analysis cycle is shortened.

7. It has automatic ignition and automatic detection and extinguishing functions.

3、 Characteristics of dedicated chromatography workstations for power systems:

1. The power system dedicated workstation adopts a 24 bit high-precision USB interface data acquisition card for data acquisition, with an input range of -2v~+2v and a resolution of+1 μ V.

2. The interference peak start function can automatically start the workstation and chromatograph based on injection interference.

3. Device management function: Briefly and intuitively set up user device management cards, and store analysis results according to different device classifications, making data management clear at a glance.

4. Flexible printing function: Provides result reports in both fixed format and custom template formats.

5. Automatic fault diagnosis: automatic over limit prompt after analysis, providing three ratio diagnosis that meets national standards, TD diagram, component concentration diagram, David triangle and other multiple fault diagnosis methods.

6. Easy qualitative analysis: The peak identification table can be automatically or manually edited. Automatically calculate correction factors and perform multiple average corrections.

7. Data visualization: Based on the historical records already stored, visually display the concentration trend chart of each component in the historical data of a certain device.

8. The powerful spectral processing function can achieve baseline leveling and spectral grafting of spectra.

4、 Technical indicators:

1. Comprehensive parameters

Dimensions: 565 × 505 × 500 [mm]; (Length x Height x Width)

Packaging box size: 730 × 650 × 610 [mm]; (Length x Height x Width)

Instrument weight: 65Kg

2. Temperature control

Number of temperature control channels: 6 channels

Column box temperature system:

Room temperature: Add 5 ℃ to 400 ℃; (set in increments of 0.11 ℃), accuracy: not greater than ± 0.1 ℃

Program temperature rise program order: 20 orders

Heating rate: 0-40 ℃/min (set in increments of 0.1 ℃); 0-80 ℃/min (set in increments of 0.1 ℃)

Cooling rate: The time for the temperature of the column box to drop from 200 ℃ to 100 ℃ shall not exceed 3 minutes

3. Gas path control: mechanical valve control

4. Start injection mode: manual or automatic selection

5. Communication method: Ethernet IEEE802.3

6. Temperature control of thermal conductivity detector:

Room temperature plus 20 ℃ to 399 ℃ (index parameters)

Temperature control accuracy: not greater than ± 0.1 ℃

7. Detector indicators:

FID detector

Detection limit: ≤ 1 × 10-12g/s [n-C16]

Noise: ≤ 3 × 10-14A

Drift: ≤ 5 × 10-13A/30min

Dynamic linear range: ≥ 107

TCD detector

Sensitivity: S ≥ 3000mv. ml/mg (n-hexadecane/isooctane; Can be enlarged by 2, 4, 8, 16 times)

Baseline noise: ≤ 20UV

Baseline drift: ≤ 50UV/30min

Linear: ≥ 105

Environmental temperature: (5-35) ℃

Relative humidity: not exceeding 85%

Supply voltage: 220 ± 10%

Power supply frequency: 50 ± 0.5Hz

Maximum power consumption: 2500W

8. Minimum detectable concentration (V/V; ppm) ul/l