Touch screen gas chromatograph

The GC7900 touch screen gas chromatograph is a high-performance model launched by Shanghai Yichun based on its strengths. It features a 5-inch touch screen display and high-precision voltage and current control flow path.

　　GC7900 touch screengas chromatograph

　　Main characteristics of the instrument

1. Implement FID automatic ignition and shutdown monitoring, without the need for manual triggering, and automatically control the ignition frequency based on temperature.

TCD is equipped with 2x, 4x, 6x, and 8x circuit amplifiers for high sensitivity, making trace analysis easy to solve.

3. The intelligent control of automatic cooling for the rear door adjusts the required switch angle through temperature compensation, solving the mechanical triggering mode represented by travel switches and optocoupler switches. It is stable and reliable, providing strong stability guarantee for customers who often need to do programmed heating.

4. Network cable interface chromatography software, all instrument parameters can be controlled through computer software, in line with international standards, mature and stable technology, eliminating the need for external acquisition cards, concise and clear, while also leaving analog output ports, convenient for old users to continue using the old version of the simulation workstation, user-friendly design, convenient and practical.

5. IP communication bus technology, network 485 digital transmission, realizes online analysis of chromatographic instruments.

6. Carrier gas pressure protection function: When the gas pressure drops to 0.1MPa, the instrument automatically cuts off the power supply to effectively protect the chromatographic column.

7. FID has automatic ignition function and does not require manual ignition.

　　GC7900 touch screengas chromatograph

　　Host technical parameters

1. Display mode: 5-inch touch screen

2. Temperature control accuracy: ± 0.1 ℃

3. Temperature control area: Six channel temperature control

4. Temperature control range: Room temperature ± 8 ℃ -450 ℃, with increments of 1 ℃

5. Program heating order: 16 orders

6. The heating rate is 0.1-40 ℃/min, with increments of 0.1 ℃,

7. Initial and termination time range: 0-6000min, with increments of 1min.

8. Extreme temperature: maximum protection value of 450 ℃

9. External events: 4-channel external events can be installed with solenoid valves, etc

10. Power supply voltage: 220V ± 10% 50HZ

11. Power: 2000W

　　Technical parameters of detector

Hydrogen flame ionization detector (FID)

Detection limit: Mt ≤ 5 × 10-12g/s (n-hexadecane)

Noise: ≤ 5 × 10-14 A

Drift: ≤ 1 × 10-13A/30min

Linear range: 106

Ignition method: automatic ignition

Thermal conductivity detector (TCD)

Sensitivity: S ≥ 3500mv · ml/mg (conventional)

S ≥ 7000mV · ml/mg (high sensitivity) (n-hexadecane)

Noise: ≤ 0.01mv

Baseline drift: ≤ 0.03mv/30min

Linear range: ≥ 104

Electron Capture Detector (ECD)

Detection limit: ≤ 1 × 10-14g/s

Noise: ≤ 0.03mv

Baseline drift: ≤ 0.2mV/30min

Linear range: 103

Radioactive source: 63Ni

Flame photometric detector (FPD)

Detection limit: (S) ≤ 5 × 10-11g/s; (P)≤1×10-12g/s

Noise: ≤ 0.03mv

Baseline drift: ≤ 0.2mv/30min

Linear range: 104 (S); 103(P)