This gas chromatograph combines the best features of various models to offer a highly cost-competitive unit. It incorporates a 5-inch touchscreen, precision flow path control (with stable pressure and flow regulation), digital circuitry, IP communication, bus technology, network transmission, and RS-485 digital data transfer. These features enable online chromatographic analysis and remote control capabilities.
1. Features automatic FID ignition and flame-out monitoring, eliminating the need for manual triggering; ignition frequency is automatically controlled based on temperature, and ignition thresholds are fully customizable.
2. The TCD includes pre-amplification settings (2x, 4x, 6x, and 8x) to ensure high sensitivity, making trace analysis straightforward.
3. Intelligent control of the rear-door automatic cooling system adjusts the opening angle via temperature compensation; this replaces traditional mechanical triggering methods (such as limit switches or optocouplers) with a stable, reliable solution, providing robust performance assurance for users frequently performing temperature-programmed analyses.
4. Supports remote control via a networked chromatography workstation, allowing all instrument parameters to be managed through PC software; the system utilizes digital transmission and bidirectional communication—aligning with international standards—to ensure mature, stable performance while eliminating the need for external data acquisition cards. An analog output port is also included to accommodate existing users who wish to continue using older workstation versions, reflecting a user-friendly design.
5. Features a 5-inch LCD touchscreen, real-time Flash animation display, and dynamic rendering of realistic graphics.
Model | LGC-5000 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 | 5-inch touchscreen display | |
Temperature control precision | ±0.1°C to ±0.2°C | |
Temperature control zones | 5 zones | |
Temperature control range | Ambient +8°C to 450°C (1°C increments) | |
Temperature programming | 17-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 | 4-channel external event control (supports installation of solenoid valves, etc.) | |
Power supply | 220V, 50Hz, 2000W | |
Detector Specifications | ||
Flame Ionization Detector (FID): | Detection limit | Mt ≤ 5 × 10⁻¹¹ 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 | |
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