|
The GC-7860 series networked gas chromatograph of the E • Prod scientific instrument series is a new type of digital fully controlled gas chromatograph launched by the company Xin. The instrument fully absorbs the technology of similar products from outside and adopts the technology and process of the industry to ensure the reliability and running time of the instrument. It not only extends normal operating time to a maximum extent and reduces maintenance frequency, but also has a simpler and more reasonable structure that is easy to learn and operate. The GC-7860 Plus gas chromatograph has two modes of gas path control: manual and electronic gas path EPC control. The electronic gas path control (EPC) system can provide industry users with industry-leading quality and reliable results. This instrument has special network remote transmission and control functions, making it a reality for unmanned, decentralized monitoring, and centralized control; The data analysis results can be integrated into DCS to complete the statistics, analysis, and monitoring of chromatographic component content, improving the automation of the process.
The GC-7860 series gas chromatograph is widely used in various analytical fields such as petrochemicals, fine chemicals, biomedicine, environmental protection, food hygiene, high-purity gases, electricity, brewing, scientific research, and education. All injection ports and detector gas paths of this gas chromatograph can be controlled by electronic gas path (EPC), providing better accuracy in retention time and peak area. Instrument users can set various parameters such as gas flow rate, external events, temperature, and detectors through anti control software, and save all parameters of the analysis method. The digital circuit ensures that the set values between different operators are maintained for each operation. Therefore, users can achieve better retention time reproducibility and more reliable results, achieving twice the result with half the effort. The GC-7860 series networked gas chromatograph can be equipped with a 6-position or 12 position liquid automatic sampler, and various parameters can be controlled using reverse control software, which will bring better repeatability and improve work efficiency, while eliminating errors caused by manual injection.
Application scope and detection indicators: Widely used in various analytical fields such as petrochemicals, fine chemicals, biomedicine, environmental protection, food hygiene, high-purity gases, electricity, brewing, scientific research, and education.
Performance characteristics:
1. * 5.7-inch dot matrix Chinese large screen LCD (can be equipped with color touch screen) display, supporting switching between Chinese and English.
2. Optional pneumatic manual and fully electronic pneumatic (EPC) control, networked communication (using Ethernet interface IEEE802.3), and computer online full control operation.
3. Electronic pneumatic EPC control mode
The EPC electronic pneumatic control accuracy is 0.01 mL/min or 0.01 Kpa, ensuring better retention time reproducibility and more reliable results.
EPC working mode: constant current, constant voltage, split current mode
Program pressure control: 4th order
EPC working gases: N2, H2, Air, He, Ar
EPC control range: pressure 0-0.6Kpa, flow rate 0-100sccm or 0-500sccm
EPC control accuracy: pressure 0.01Kpa; Flow rate of 0.01 sccm
4. * Supports high-speed heating, with a high rate of 80 ℃/min; Suitable for quick analysis.
5. The temperature can be raised by 450 ℃, suitable for the analysis of high boiling point samples.
6. * Supports dual column box dual rear door opening mode
7. The temperature increment of the column box is 1 ℃, with an accuracy of ± 0.01 ℃, which is close to high-end imported products of the same type.
8. 6 external events and 2 auxiliary control outputs.
9. Diversified sampling system; Fill column injection, capillary split/non split injection, valve injection, automatic liquid injection, fully automatic air injection, pyrolysis injection, pyrolysis suction injection, and purge and capture injection are optional.
10. Special customized valve systems can be used to assist users in completing complex multidimensional chromatographic analysis tasks.
The Plus model is a multi-purpose gas chromatograph specifically designed for multidimensional application analysis and online analysis.
11. There are various types of detectors that can be installed, including TCD, HTCD, uTCD, FID, FPD, ECD, NPD, ZD, PDDID, PID, and AID.
12. The program supports multi channel sample selection MPV system, with automatic recognition of valve number, automatic cascade judgment, automatic reset, valve position selection, valve position analysis and memory functions, and supports up to 32 channel sample flow path selection.
13. The special network remote transmission and control function can perform unmanned analysis, decentralized monitoring, and centralized control.
14. The data can be connected to the DCS system to complete the statistics, analysis, and monitoring of chromatographic component content, improving the automation level of process control.
15. Temperature control indicators:
a) Number of temperature control channels: 8 channels
b) Column box temperature index:
*Column box temperature range: 4 ℃ to 450 ℃ above room temperature (incremental 1 ℃)
*Column box temperature control accuracy: better than ± 0.01 ℃
Column box program temperature rise: 16 step rise
Cheng speed setting: 0.1-39 ℃/min (ordinary type); 0.1-80 ℃/min (high-speed type)
Constant temperature time for each stage: 0-999min (increments of 0.1min)
Program cooling: It only takes about 6 minutes to cool down from 260 ℃ to 50 ℃
c) Injector, detector, thermal conductivity cell temperature indicators
*Temperature range: 4 ℃ to 450 ℃ at room temperature (increments of 1 ℃)
*Temperature control accuracy: better than ± 0.01 ℃
Detector parameters
Hydrogen flame ionization detector (FID)
The collection electrode adopts a cylindrical structure and a quartz nozzle
◎ Detection limit: ≤ 3 × 10-12g/s (n-hexadecane/isooctane)
◎ Baseline noise: 5 × 10-14A
◎ Baseline drift: ≤ 1 × 10-13A/30min
◎ Linear: ≥ 107
◎ Automatic ignition
Thermal conductivity detector (TCD)
◎ Adopting a semi diffusive structure
◎ The power supply adopts constant current control mode
◎ Sensitivity: S ≥ 3000mv. ml/mg (n-hexadecane/isooctane) HTCD high-sensitivity thermal conductivity detector S ≥ 10000mv. ml/mg (n-hexadecane/isooctane); Digital amplification 2, 4, 6, 8 times optional
◎ Baseline noise: ≤ 10 μ v
◎ Baseline drift: ≤ 30 μ v/30min
◎ Linear: ≥ 105
◎ Stability of carrier gas flow rate: ≤ 1%.
◎ Optional capillary column connection component
Electron Capture Detector (ECD)
Detection limit: ≤ 1 × 10-14g/s
Linear range: 104
Radiation source: Ni63
Flame photometric detector (FPD)
◎ Detection limit: 5 × 10-12g/s (S)
5×10-13g/s（P）
◎ Linear range: 105 (P) 103 (S)
High operating temperature: 350 ℃
◎ Detection method: Air hydrogen flame spectroscopy method
◎ Light detector: terminal photomultiplier tube
◎ Doubling tube voltage: up to 700V
Nitrogen phosphorus detector (NPD)
Detection limit: (N) ≤ 5 × 10-12g/s; (P)≤5×10-12g/s Application case:
1. Gas analysis in power transformer oil (GB/T 17623-1998, DL/T 722-2000, DL/T 703-1999)
2. Gas chromatography method for safety gas analysis underground in coal mines (capable of 24-hour continuous sampling and analysis of 32 points)
3. Air quality (TVOC, benzene, total hydrocarbons, and non methane total hydrocarbons) analysis (in accordance with GB/T 50325-2001, GB/T 18883-2002, GB16927-1996); Workshop exhaust and flue gas analysis, as well as 24-hour uninterrupted online analysis of VOCs, benzene, and non methane total hydrocarbons in flue gas
4. Water quality analysis (in accordance with GB/T 5750-2006)
5. Analysis of various industrial gas types such as natural gas, refinery gas, cracking gas, artificial gas, etc. (simple single valve type, broad-spectrum process dual valve four column economic type, broad-spectrum process three valve four column practical type, broad-spectrum process five valve six column type, three valve four column TCD type, four valve five column dual TCD type, etc.); Compliant with GB/T 13610-2003, UOP539, ASTM1945, ASTM D 1946, and GPA2261; Can be customized according to the specific sample of the user)
6. Gas and biogas analysis (six components of H2, O2, N2, CH4, CO, CO2, with special single valve sequence transformation)
7. Sulfides in natural gas (using a special single valve sequential reverse blowing method to detect H2S, CSO, SO2, and total sulfur)
8. High purity gas analysis, electronic industry gas analysis (small detection concentration can reach 10pppb or more)
9. Analysis of benzene and toluene in gasoline (in accordance with ASTM D3606); SH/T 0713—2002）
10. Analysis of oxygen-containing compounds in gasoline (compliant with AZTM D4815 and SH/T 0633-1998)
11. Analysis of benzene, toluene, and aromatic hydrocarbons in gasoline (in accordance with ASTM D5580-1995, SH/T0693-2000)
12. SOA analysis of hydrocarbon group composition in gasoline and PONA analysis of monomer hydrocarbons in gasoline (detection of saturated hydrocarbons, olefins, aromatics, and benzene content using a specially designed olefin adsorption trap; compliant with SH/T 0741-2004)
13. Simulated Distillation Gas Chromatography (in accordance with SH/T 0558, ASTM D5307, D3710, D6352, D2887)
14. Blood ethanol analysis (in accordance with Gongan standard GA/T105-1995)
15. Cigarette strips VOC (compliant with YC/T 207-2006), drug residue analysis, ethylene oxide in medical devices (compliant with GB/T 16886.7-2001), solvent residue detection in packaging materials
16. Greenhouse gas gas chromatography (CO2, CH4, and N2O, 0.1ppm -100%)
17. Catalytic evaluation, high-pressure and high-temperature online analysis system (customized system chromatography according to requirements)
18. Process gas chromatography (industrial chromatography), sample pretreatment, analysis cabin construction, multi channel sample selection (supporting 32 channel sample selection), etc
|
