Laboratory gas chromatograph

The LX-3200 series gas chromatograph is a new type of gas chromatograph developed by Langxi Instrument (Shanghai) Co., Ltd. using a new industrial design and mainstream network communication technology. The application of highly integrated industrial grade chips, bus technology, Ethernet technology, microfluidic gas control technology, and data processing software not only optimizes temperature control accuracy and gas control accuracy, but also greatly enhances the stability and reliability of the instrument.

The LX-3200 laboratory chromatograph utilizes network communication technology and is equipped with a high-precision AD conversion circuit, enabling multiple chromatographs to share one computer for data analysis, printing, and storage; And it has achieved remote control of instruments and remote transmission of chromatographic data, facilitating real-time tracking and management of product quality by enterprise managers.

Instrument features:

The instrument adopts the 100M/Gigabit Ethernet communication interface and built-in IP protocol stack, so that the instrument can realize long-distance data transmission through the enterprise internal LAN and Internet; Facilitating laboratory setup, simplifying laboratory configuration, and facilitating data analysis management.

Three independent IP addresses are designed inside the instrument, which can be connected to work computers (laboratory site), branch computers (such as quality inspection department, production department, etc.), and executive computers (such as technical department, etc.), allowing real-time monitoring of instrument operation and analysis of data results when needed.

The dedicated workstation equipped with the instrument can simultaneously support the access of multiple chromatographs, enabling data processing and instrument reverse control, simplifying document management.

The instrument can be connected to the manufacturer through the Internet to realize remote diagnosis, remote update, etc. (to be set by the user).

The instrument is equipped with an 8-inch color LCD touch screen, which is specifically designed for industrial automation applications. It is an intelligent human-machine interface system that integrates a large number of industrial automation processing related software with micro instructions. It has the characteristics of low power consumption, stability, reliability, and easy operation, and can perform 64 level brightness adjustment.

The instrument adopts a multi processor parallel working mode, making it more stable and reliable; Multiple high-performance detectors can be optionally installed, including PDDID, FID, TCD, ZrD, ECD, FPD, PED, PID, NPD, etc. Multiple detectors can be installed simultaneously to meet the analysis needs of complex samples.

The instrument adopts a modular structural design, which makes maintenance simple and convenient in the later stage.

A brand new microcomputer temperature control system with high temperature control accuracy, reliability, and anti-interference performance; Equipped with eight independent temperature control outputs, it can achieve twenty step programmed heating, and has an automatic rear door opening system for column boxes. Its near room temperature control ability is improved, and the heating/cooling speed is faster.

The electronic flow control unit (EFC) and electronic pressure control unit (EPC) of the instrument configuration have achieved digital control of the gas path, greatly improving the stability of the instrument and the importance of analysis results.

The chromatograph is equipped with a low-noise, high-resolution 24 bit AD circuit and has the functions of baseline storage and baseline subtraction.

The standard workstation is suitable for operating systems such as WinXP, Win2000, Win7, Win8, Win10, etc.

3、 Technical indicators

1. Temperature control indicators

Temperature controlled area: 8 channels

Temperature control range: 4 ℃ to 450 ℃ above room temperature, increment: 1 ℃, accuracy: ± 0.1 ℃

Program heating order: 20 orders

Cheng Sheng rate: 0.1-60 ℃/min

Program boost: 8th order

2. EPC controller

The electronic pressure control unit (EPC) of the instrument configuration realizes digital control of the gas path, greatly improving the stability of the instrument and the reproducibility of the analysis results; The EPC control system is a gas micro flow control system designed and manufactured using high-precision proportional valves, pressure sensors, and flow sensors. Compared with traditional mechanical valve control methods, it greatly improves the accuracy of gas pressure and flow control, enhances the automation level of instruments, eliminates the shortcomings of traditional mechanical valves that cannot compensate for temperature, and thus improves the overall performance of instruments.

(1) EPC Technical Parameters

★ Optional carrier gas and tail blowing gas types: He, H2, N2, and Ar;

★ Pressure units: kPa, psi, bar;

★ Pressure control range: 0-600kPa;

★ Control accuracy: 0.01kPa;

★ Program boost repeatability: ≤ 0.1%;

★ Flow control range: 0-600mL/min;

★ Flow control accuracy: 0.01mL/min;

★ Traffic stability: ≤ 0.1%;

★ Program boost/current order: 8 orders;

★ Flow sensor: accuracy ≤ ± 3%, depending on the type of carrier gas used;

★ Detector module: accuracy ≤ ± 7%, depending on the type of auxiliary gas;

When setting the capillary column flow rate, it is necessary to accurately set the chromatographic column parameter information.

(2) Gas EPC mode parameters (optional)

EPC and EFC working modes: 2 types, constant current mode and constant voltage mode

EPC and EFC working gases: 5 types, nitrogen, hydrogen, air, helium, argon

EPC, EFC lift: 4th order

EPC and EFC control range: pressure 0-0.6MPa; Flow rate of 0-100 sccm or 0-500 sccm (air);

EPC and EFC control accuracy: pressure of 0.01kPa; Flow rate of 0.01 sccm;

(3) Parameters of pneumatic sensor

pressure sensor

Accuracy:<± 2% of full scale

Reproducibility:<± 0.05 kPa

Temperature coefficient:<± 0.01 kPa/℃

Range: 0-0.6MPa

flow sensor

Accuracy:<± 5% of full scale

Reproducibility:<± 0.5% (full scale)

Range: 0-500sccm

3. Other parameters

LX-3200 series laboratory gas chromatograph

Dimensions: 635 × 510 × 480mm (W × D × H)

Weight:<45kg

Power supply: 220V ± 22V, 50Hz

Power: ≤ 2kW