GC6890 PLUS gas chromatograph

GC6890PLUStypegas chromatograph

GC6890PLUStypegas chromatographIt is a multifunctional laboratory analytical instrument controlled by a computer, with five optional detectors including thermal conductivity, hydrogen flame ionization, electron capture, flame photometry, and nitrogen phosphorus. Can be equipped with packed columns and capillary chromatography columns. The instrument can perform constant temperature and nine step programmed heating operations.

The instrument is designed with a high degree of automation, and adopts automatic flow control technology (AFC) and electronic pressure control technology (EPC). It can set flow, pressure parameters, detection parameters, temperature parameters, and automatically reset detection signals through a keyboard. It has a temperature over temperature alarm function. When the temperature of any circuit exceeds the set temperature by more than 16 degrees and continues to rise, there will be text prompts and sound alarms on the display screen. The instrument has functions such as gas cut-off protection, automatic ignition, and provides four-way time control, which can meet complex analysis applications. The instrument can be equipped with a built-in chromatography workstation and has computer reverse control function. The instrument adopts a large screen color touch screen design, with a friendly interface, easy to operate, and very convenient to use.2、 Working conditions

Normal working conditions of this instrument:

1Environmental temperature: 5-35 ℃;

2Relative humidity: below 85%;

3There is no strong electromagnetic field interference around, no corrosive gases, no strong vibrations, and no significant convection in the air;

4Power supply: 220V ± 22V; 50 ± 1Hz

The distribution power shall not be less than 3KW.

3、 Technical performance:

1Gas path EPC, AFC control

·It has four control modes: constant current, constant voltage, split current, and no split current

·Total flow control range: 0-200ml/min

·Pressure control range 0-500KPa

·Flow control accuracy: ± 0.1ml/min

·Pressure control accuracy: ± 0.1KPa

·All auxiliary gases are controlled by EPC electronic pressure control

·Equipped with atmospheric pressure and environmental temperature compensation functions, changes in environmental conditions do not affect the detection results

·Carrier gas and auxiliary gas can be selected from N₂,H₂,He,ArQi.

2Temperature control

(1) Column temperature:

·Control range: Room temperature+3 ℃ -400 ℃

·Temperature stability: 0.2%

·Temperature gradient: no more than 2% within the effective zone of the column

·The deviation between the set temperature and the actual temperature shall not exceed ± 2%

·Number of promotion orders: 9 orders

·Heating rate: 0.1-40 ℃/min, with intervals of 0.1 ℃/min

·Cooling rate: The column chamber drops from 250 ℃ to 50 ℃ for no more than 8 minutes

·The repeatability of program heating should not exceed 1%

·Initial and final temperature time: 0.1-256 minutes.

(2) Temperature of vaporization chamber and detection chamber

·Temperature control accuracy: ± 0.1 ℃ (room temperature+10 ℃ to within 200 ℃)

± 0.2 ℃ (above 200 ± ℃)

·The deviation between the set temperature and the indicated temperature shall not exceed 1 ℃

·Temperature control range: Room temperature+10 ℃ -400 ℃.

(3) Overtemperature alarm

When the temperature of any circuit exceeds the set temperature by more than 16 degrees and continues to rise, there will be text prompts and sound alarms on the display screen.

{C}3{C}Thermal conductivity pool detector

(1) Sensitivity: not less than 6000mv · ml/mg (benzene/toluene)

(2) Noise: not exceeding 35UV

(3) Drift: not greater than 100UV/30min

(4) Start time: no more than 4 hours.

4Hydrogen flame ionization detector

(1) Detection limit: not greater than 1 × 10^-11G/s (n-hexadecane/isooctane)

(2) Noise: not greater than 4 × 10^-14A

(3) Drift: not greater than 2 × 10^-13A/30min

(4) Start time: no more than 2 hours

5Electronic Capture Detector

(1) Detection limit: not greater than 1 × 10^-13G/ml (γ -666/iso octane)

(2) Noise: not exceeding 40UV

(3) Drift: no more than 100UV/half an hour

(4) Start time: 4 hours

6Flame photometric detector

(1) Detection limit: no more than 5 × 10 for sulfur^-11g（s）/s（噻吩）

Phosphorus not exceeding 1 × 10^-11G (p)/s (ethyl-1605)

（2）Noise: less than 5 × 10^-13A

（3）Drift: less than 1 × 10^-12A/30min

7Nitrogen and phosphorus detector

(1) Detection limit: not exceeding 5 × 10 for nitrogen^-12G (n)/s (azobenzene)

Phosphorus not exceeding 5 × 10^-13G (p)/s (malathion isooctane)

(2) Noise: not greater than 2 × 10^-13A

(3) Drift: not greater than 1 × 10^-12A/30min

8Instrument size and reset

(1) Host size: 500 × 550 × 500 (unit: mm, height × width × depth)

(2) Reset: Approximately 50kg