Gas chromatograph

GC-7860 series network-based gas chromatography is a new digital full control gas chromatography. The instrument

has fully absorbed the advanced technology of foreign similar products and adopted the leading manufacturing
technology to ensure the reliability and trouble-free operation time of the instrument. It can not only maximize the
normal operation time, reduce the number of maintenance, and in the structure of more concise and reasonable,
simple to learn, easy to operate.

GC-7860 gas chromatography gas circuit control has two modes of manual and electronic gas circuit EPC/EFC
control, advanced electronic gas circuit control (EPC/EFC) system, can provide industry users with industry-leading
excellent quality and reliable results. The instrument has a unique network remote transmission and control
function, so that the instrument in unattended, decentralized detection, centralized control into a reality; Data
analysis results can be connected to DCS to complete the statistics, analysis and monitoring of chromatographic
component content and improve the automation of the production process.

All inlet and detector gas paths for the GC-7860 gas chromatography can be controlled by an electronic gas circuit
(EPC/EFC) to provide better retention time and peak area accuracy. Instrument users can set various parameters
such as gas flow rate, shunt ratio, external events, automatic sampler, temperature and detector through the
reverse control software, and save all parameters of the analysis method. The digital circuit keeps Settings
consistent between operators on each run. As a result, users can achieve better retention time reproducibility and
more consistent and reliable results.

GC-7860 series network-based gas chromatography can be configured with 6-bit, 15-bit, and 150-bit liquid
automatic samplers, and each parameter can be controlled by the reverse control software, which will bring better
repeatability and improve work efficiency, while eliminating errors caused by manual samplers.

Features:

• 8-inch touch screen.
• Gas circuit manually and full electronic gas circuit (EPC/EFC) control is optional, networking communication (Ethernet interface IEEE802.3), computer online full control operation.
• Electronic gas circuit (EPC/EFC) control mode

EPC electronic gas circuit control precision is 0.01mL/min or 0.01Kpa, which ensures better retention time reproducibility and more consistent and reliable results
EPC working mode: constant current, constant voltage, shunt mode
Program pressure control: 4 stage
EPC working gases: N2, H2, Air, He, Ar
EPC control range: pressure 0~ 0.6kpa flow 0~100sccm or 0~500sccm
EPC control accuracy: pressure 0.01Kpa; Flow rate of 0.01 sccm

• Support high-speed heating, the maximum rate of 80 ℃ / min; Suitable for rapid analysis
• Could be up to 450 ℃, suitable for high boiling point the analysis of the sample
• Support double oven and double rear door opening mode
• Oven temperature increment 1 ℃, the accuracy of + / – 0.01 ℃, is close to high-grade imported similar products
• External events: 6-way. auxiliary control 2-way.
• Diversified injection system; Packed column injection, capillary S/SL injection, valve injection, automatic liquid injection, automatic headspace injection, splitting injection, thermal desorption injection, purge and capture injection are optional
• Special customized valve system can help users complete complex multidimensional chromatographic analysis tasks. Plus series is a multi-purpose gas chromatography specially designed for multidimensional application analysis and online analysis.
• Rich detector types, up to three detectors can be installed: TCD, HTCD, uTCD, FID, FPD, ECD, NPD, ZD, PDHID, PID, AID
• The program supports multiple flow path sample selection MPV system, with automatic identification valve number, automatic cascade judgment, automatic reset, valve position selection, valve position analysis memory function, up to 32 support sample flow path selection
• Unique network remote transmission and control functions, unattended analysis, decentralized monitoring, centralized control.
• The data can be connected to DCS system to complete the statistics, analysis and monitoring of chromatographic component content and improve the automation level of production process control
• Temperature control index:
• Temperature control circuit number: 8
• Oven temperature index
• Oven temperature range: room temperature of 4 ℃ ~ 450 ℃ (increment 1 ℃)
  Oven temperature control precision, better than ±0.01 ℃
  Oven temperature programming Rising order: 16 order
  Rising rate setting: 0.1 ~ 39 ℃ / min (ordinary type); 0.1~80℃/min (high-speed type)
  Constant temperature time of each order: 0~999min (increment: 0.1min)
  Programmed cooling: 260 ℃ to 50 ℃ only need 6 minutes
• Sample injector, detector, thermal conductivity pool, methane reformer temperature index:
• Range of temperature: Room temperature of 4 ℃ ~ 450 ℃ (increment 1 ℃)
  The accuracy of temperature control: better than±0.01 ℃

  Detector:
  FID
  ◎The collecting pole adopts the original cylindrical structure and quartz nozzle
  ◎Limit of detection:≦3×10¯¹²g/s
  ◎Baseline Noise: 5×10¯¹⁴A
  ◎Baseline Drift: ≦1×10¯¹³A/30min
  ◎Linear: ≧10⁷
  ◎Autoignition
  TCD
  ◎Adopt semi-diffused structure
  ◎Constant current control mode is adopted for power supply
  ◎Sensitivity: S≧3000mv.ml/mg
  HTCD High sensitivity thermal conductivity detector S≧10000mv.ml/mg; Digital amplification 1, 2, 4, 8 times optional
  ◎Baseline Noise: ≦10µv
  ◎Baseline Drift: ≦30µv/30min
  ◎Linear: ≧10⁵
  ◎Carrier gas velocity stability: ≦1%
  ◎Capillary column connecting parts are optional
  ECD
  ◎Limit of detection：≦1×10¯¹⁴g/s
  ◎Linear range: 10⁴
  ◎Source: Ni⁶³
  FPD
  ◎Limit of detection: 5ׯ¹²g/s(S) (S in methyl parathion)
  5×10¯¹³g/s (P) (P in methyl parathion)
  ◎Linear range: 10⁵(P)  10³(S)
  ◎Maximum service temperature: 350℃
  ◎Detection Method: Air-hydrogen flame spectrometry
  ◎Optical detector: Top photomultiplier
  ◎Multiplier voltage: Max–700V
  NPD
  ◎Limit of detection: (N)≦5×10¯¹²g/s
  (P)≦5×10¯¹²g/s