portable gas chromatograph tcd ecd npd fid detector gas chromatograph

Product description

GC-7820A gas chromatograph is a new generation product, color LCD Chinese and English display, touch screen button, full digital parameter operation, pneumatic circuit parameter automatic control (EPC) and other technologies, with high integration, simple operation, high degree of automation, Good reliability, adapt to long-term operation, etc., its cost performance ranks among the best in its class. Can be widely used in petroleum, chemical, environmental, food safety, disease control and education and scientific research, etc., can analyze the constant, trace and trace of organic matter, inorganic matter and gas.

Main technical features

►Using imported industrial color touch LCD screen design, the display information is more complete, the interface operation is more reasonable, with two sets of Chinese and English operating systems.

►The maximum temperature control temperature of each heating zone of the instrument is 450°C.

►Using Internet communication technology to form a local area network to realize long-distance transmission, remote control and remote diagnosis, and the program can be automatically upgraded.

►With powerful and self-diagnosis function, visual display fault information, power-off storage protection function, keyboard lock function, auto-ignition function and anti-power mutation interference function.

►Equipped with automatic control valve for automatic sequence operation (four-way valve, six-way valve, ten-way valve and liquid injection valve are optional).

►Can be equipped with a variety of injection methods, such as high-efficiency liquid autosampler, headspace sampler, etc., to achieve unattended automatic injection analysis, improve analysis efficiency and reduce labor intensity.

► The detector and its control components use the modular combination design and the plug-and-play extended control mode system to automatically identify, configure, display, and run the installed control components.

► Configurable detectors: with FID, TCD, ECD, FPD and NPD detectors.

Main Specifications

Working conditions

►Power: 220V, 50Hz

► Ambient temperature: 15 ° C ~ 35 ° C

► Ambient humidity: 5% to 95%

2. Oven

►Heart size: 28×30×17cm

► Operating temperature range: above room temperature to 450 ° C

►Temperature setting accuracy: 0.01°C

►Programming speed: 120°C/min

►Maximum method running time: 999.99min

►Programming order: 8 steps (expandable 20 steps)

3, the inlet

► Operating temperature range: above room temperature to 400 ° C

►Inlet port includes electronic flow control module split/splitless capillary column inlet with high precision electronic pressure/flow control

►Head pressure setting range: 1-100psi

►Stand head pressure control setting accuracy: 0.01psi

►Total flow setting range: 0 - 1000ml/min (helium); 0 - 200ml/min (nitrogen)

► Flow setting accuracy: 0.1ml/min; Split ratio: 1:1000

4, detector

►All detectors include electronic flow control module, and later expansion can install any three detectors at the same time

► A variety of detectors can be configured to meet different analytical needs: hydrogen flame ionization detectors, thermal conductivity detectors, electron capture detectors, flame photometric detectors, nitrogen and phosphorus detectors.

Hydrogen flame ionization detector (FID)

►Signal amplifier board is specially treated to be stable in harsh environments

►Automatic ignition, hydrogen leak protection

►Using unique amplifier technology enables high gain amplification of weak signals and automatic reduction of gain for strong signals to avoid saturation.

►Use temperature 450 °C

►Minimum detection limit: <5 picograms carbon/second (n-hexadecane)

►Dynamic linear range: 107 (±10%)

►Data acquisition frequency: 100hz

Thermal Conductivity Detector (TCD)

► Fit packed column and capillary column

► Fast settling time, small dead volume and short balance time

►High precision electronic flow/pressure control, suitable for packed columns and capillary columns, temperature 400°C

►Dynamic linear range: 105 (±10%)

►Minimum detection limit: <800pg propane/ml (helium)

►Data acquisition frequency: 100hz

Electronic capture detector (ECD)

►Ingenious design, stable and efficient

►Safer and higher sensitivity, only 8mCi ultra-low radiation but high response

►Anodic purge is effective to avoid cross-contamination between samples, high repeatability

►Line source capacity: 370MBq (including exemption certificate)

► Temperature range: 400 ° C

►Minimum detection limit: 8fg/s (γ-BHC)

►Dynamic range: 105

Flame Photometric Detector (FPD)

►Unique local cooling technology to increase the maximum operating temperature

►No cold spots for organophosphorus pesticides

►The internal pipeline is fully inertized to ensure zero adsorption of the sample.

►Minimum detection limit: P: 0.11pg/s (110fgP/s) (tributyl phosphate), S: 5pg/s (dodecanethiol)

►Dynamic range: P: 104 S: 103

Nitrogen and Phosphorus Detector (NPD)

►The output signal can be amplified to reduce interference, high sensitivity, good linearity and range .

►Detection limit: phosphorus measurement Mt ≤ 5 × 10-13g / s (malathion) nitrogen measurement Mt ≤ 1 × 10-12g / s (azobenzene)

►Dynamic range: P: 104 S: 103

Chromatography workstation

► Four-channel synchronous or asynchronous operation

►Sampling frequency: 20 times/second, adjustable program variable

►The workstation supports the MODBUS/TCP protocol, which can easily access the DCS and complete the DCS processing of the analysis results.

►Using 10/100M adaptive Ethernet communication technology; high communication speed, support for long-distance data transmission and control.

►Using the unique high-fidelity digital filtering algorithm, it has strong anti-noise ability and can detect weak peaks in the same level as the baseline noise.

►Multi-thread technology is used to realize signal acquisition, data processing and user management.

Very user-friendly software operating system

►With simple interface and powerful data processing, it realizes the rigorous and efficient automation of GC's complete analysis and management work;

►Equipped with NETChrom® workstation, it can support multiple chromatographs (253) to work simultaneously, realize data processing and counter-control, and achieve the leading level in the industry.

►With complete audit trail, user rights management, electronic signature and other functions, the analysis data and documents are in line with GMP management requirements;

►Modbus/TCP server built into the NETChrom® workstation for easy access to DCS (Distributed Control System)