DESCRIPTION
This gas chromatograph combines the best features of various models to offer a highly competitive, cost-effective unit; it features a 7-inch touchscreen, a flow path with precise voltage and current regulation, and analog circuitry.
This gas chromatograph combines the best features of various models to offer a highly competitive, cost-effective unit; it features a 7-inch touchscreen, a flow path with precise voltage and current regulation, and analog circuitry.
1. Features a microcontroller-based control circuit that is precise, reliable, and utilizes mature electronic control technology to meet standard analytical requirements.
2. Equipped with an FID or TCD detector and a standard carrier gas pressure protection device.
3. Utilizes intelligent control for automatic rear-door cooling, adjusting the opening angle via temperature compensation; this eliminates the issues associated with traditional mechanical triggering methods (such as limit switches or optocouplers), ensuring stability and reliability—a robust solution for customers frequently performing temperature-programmed analyses.
4. Includes a Chinese-language dual-channel chromatography workstation with mature, stable technology and an external data acquisition card; the system features a user-friendly, intuitive design and an analog output port for ease of use.
5. Features a 7-inch touchscreen LCD display, real-time Flash animation, and dynamic rendering of realistic graphics.
6. Features a high-precision diaphragm-type pressure-regulating valve assembly that is shock- and drop-resistant, highly stable, and ensures consistent output flow; the corrosion-resistant fluororubber gasket offers exceptional durability.
Model | LGC-7000 Series | |
Pressure protection | The carrier gas system features pressure protection; if the gas pressure drops below 0.1 MPa, the instrument automatically cuts off power to safeguard the chromatography column. The FID features automatic ignition, eliminating the need for manual lighting. | |
Display | 7-inch touchscreen display | |
Temperature control precision | ±0.1°C to ±0.2°C | |
Temperature control zones | 6 zones | |
Temperature control range | Ambient +8°C to 450°C (1°C increments) | |
Temperature programming | 33-stage temperature programming; heating rate 0.1–40°C/min (0.1°C increments); initial and final hold times: 0–6000 min (1 min increments) | |
Temperature limit | Maximum protection limit of 450°C | |
External events | 8-channel external event control (supports installation of solenoid valves, etc.) | |
Power supply | 220V, 50Hz, 2000W | |
Detector Specifications | ||
Flame Ionization Detector (FID): | Detection limit | Mt ≤ 8 × 10⁻¹2 g/s (n-hexadecane in isooctane solution) |
Noise | ≤ 5 × 10⁻¹⁴ A | |
Drift | ≤ 1 × 10⁻¹³ A/30 min | |
Linear range | ≥ 10⁶ | |
Ignition method | Automatic ignition | |
Thermal Conductivity Detector (TCD) | Sensitivity | S ≥ 2800 mV·mL/mg (standard) |
Noise | ≤ 0.02 mV | |
Baseline drift | ≤ 0.03 mV/30 min | |
Linear range | ≥ 10⁴ | |
Flame Photometric Detector (FPD) | Detection limit | (S) ≤ 5 × 10⁻¹¹ g/s, (P) ≤ 1 × 10⁻¹² g/s |
Noise | ≤ 0.03 mV | |
Baseline drift | ≤ 0.2 mV/30 min | |
Linear range | ≥ 10³ (S), 10² (P) | |
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