JunqiinstrumentGC-9890A gas chromatograph parameters

* Main features
1The host comes with a two-way valve control system, which facilitates online automatic sampling.
2The inter column compensation circuit provides electronic compensation for baseline drift during program temperature rise operation, reducing the impact of the second Root pillar、The complexity brought by detectors and auxiliary flow systems.
3The signals from the detector, heater values, furnace temperature, flow sensor readings, or stored column compensation baseline signals can all be assigned to a simulated output channel.
4. Self testing and fault diagnosis, experimental data stored for power-off protection,Stopwatch and running timerKeyboard lock function.

5Can be connected to a reverse control workstation to achieve real-time control, and can store 100 sets of experimental conditions and spectra.

6. It can be installed with the American HP-5890 gas chromatograph micro thermal conductivity detector to achieve complete docking.
7. Can installTwo flow sensing channels，Two single column compensation channels.

Heating furnace system
temperature range：Environmental temperature+5 ℃～400 ℃ three-stage program heating, heating rate 0～50℃/min； increase

Measure at 0.1 ℃/min. The temperature control accuracy is ± 0.05 ℃, and the furnace temperature can be recalibrated by the user and the temperature can be set arbitrarily.

The intelligent rear door opening system has stepless variable air flow in and out, which shortens the stable balance time of the system after heating/cooling.The time taken for the column box to drop from 300 ℃ to 50 ℃6min.

Sample injection system

1Filler column sampler: suitable for various caliber filler columns and large-diameter capillary columns

2Capillary sampler: optional shunt/non shunt system controlled by programming valve

3Optional options include our company's headspace sampler and thermal analyzer.

Detector system
1. HydrogenFlame ionization detector（FID）：

Easy to disassemble and install, convenient for cleaning or replacing nozzles, easy to operate；The input signal can be logarithmically amplified to reducefinishInterference, high sensitivityGood linearity and wide range.
Sensitivity:type aMt≤5×10-11G/s (n-hexadecane)
baseline noise：≤ 6×10-12A/H
Linear range: ≥105
Stable time:<0.5h

2. Thermal conductivity detector (TCD):

Sensitivity:type a ：≥4000mv • ml/mg (n-hexadecane)

Baseline noise: ≤ 30 μ v (with a carrier gas of 99.999 helium)
Stability time: Type A<1.5H gas cut-off protection

Updated on September 2, 2020 at 10:22:38