Wobo Industrial Equipment Co., Ltd.
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Product Overview
The CO₂ Gas Chromatograph is a high-sensitivity, high-selectivity gas analysis instrument, designed for detecting trace CO₂ in nitrogen used for food additives and analyzing ultra-trace impurities in high-purity inert gases. The system is equipped with a Hydrogen Flame Ionization Detector (FID), a conversion furnace (CH₄ converter), and a Zirconia Detector (ZD), paired with two specialized chromatographic columns. This setup enables precise measurement of impurities such as H₂, O₂, CH₄, CO, and CO₂, fully meeting national standards for high-purity nitrogen analysis.
Working Principle
The instrument separates mixed gases using gas chromatography, then sequentially directs the components into dedicated detectors for quantitative analysis.
- FIDprovides highly sensitive measurement of hydrocarbons.
- Conversion furnaceconverts CH₄ for accurate detection.
- Zirconia detectormeasures trace O₂, N₂, and other inert gas impurities.
An integrated system with automatic sampling, ten-way valve control, and a computer workstation allows seamless data acquisition, storage, calculation, and feedback control.
Key Features
- High-precision FID detection: Detection limit Mt ≤ 3×10⁻¹² g/s, baseline noise ≤ 5×10⁻¹⁴ A, baseline drift ≤ 1×10⁻¹³ A/30 min, linearity ≥ 10⁶
- High-sensitivity zirconia detection: Sensitivity 0.1 ppm, baseline noise ≤ 10 μV, baseline drift ≤ 30 μV/30 min, linearity ≥ 10⁶
- High CH₄ conversion rate: ≥ 98% conversion in the CH₄ furnace
- Wide temperature control range: 6 zones, 5 °C above room temperature to 450 °C, 1 °C increments, accuracy ±0.1 °C, supports 32-step programmable ramps, heating rates 0.1–39 °C/min (standard) or 0.1–80 °C/min (fast)
- Versatile injection modes: Packed column, capillary, six-way valve, or automatic headspace sampling
- Automated operation: Manual, automatic, or syringe-triggered injection options
- Multiple detector options: Supports up to three detectors (FID, TCD, ECD, FPD, NPD)
- Networked data management: Ethernet (IEEE802.3) interface for real-time data acquisition, processing, and remote control
Applications
- Food Additives Industry: Trace CO₂ and impurity detection in nitrogen to ensure product quality
- High-Purity Gas Analysis: Ultra-trace impurity analysis in inert gases such as H₂, O₂, CH₄, CO, CO₂
- Research Laboratories: High-precision gas analysis and data collection for scientific research
- Industrial Gas Monitoring: Ensures purity and safety of gases used in industrial processes
- Gas Quality Control: Critical for semiconductor manufacturing, precision electronics, and other applications requiring strict gas purity
| Instrument General Parameters | |
| Parameter | Specification |
| Temperature Control Zones | 6 |
| Temperature Range | 5℃ above room temperature ~ 450℃, increment 1℃, accuracy ±0.1℃ |
| Program Heating Steps | 32 steps |
| Ramp Rate | 0.1~39℃/min (Standard); 0.1~80℃/min (High-speed) |
| External Events | 8 |
| Auxiliary Control Outputs | 4 |
| Injector Types | Packed column, capillary, six-port valve gas injection, automatic headspace injection (optional) |
| Number of Detectors | Up to 3 (FID, TCD, ECD, FPD, NPD optional) |
| Injection Start Mode | Manual, automatic, syringe auto-detection (optional) |
| Communication Interface | Ethernet: IEEE802.3 |
| Flame Ionization Detector (FID) | |
| Parameter | Specification |
| Detection Limit | Mt ≤ 3×10⁻¹² g/s (n-hexadecane/isooctane solution) |
| Baseline Noise | ≤ 5×10⁻¹⁴ A |
| Baseline Drift | ≤ 1×10⁻¹³ A/30 min |
| Linearity Range | ≥ 10⁶ |
| Operating Temperature | ≤ 450℃ |
| Methane Conversion Furnace | |
| Parameter | Specification |
| Conversion Rate | ≥ 98% |
| Zirconia Detector (ZrO₂) | |
| Parameter | Specification |
| Sensitivity | 0.1 ppm |
| Baseline Noise | ≤ 10 μV |
| Baseline Drift | ≤ 30 μV/30 min |
| Linearity Range | ≥ 10⁶ |
