Product Overview
The GCS-70 Industrial Online Analyzer is a state-of-the-art process gas chromatography system designed in strict accordance with national environmental regulations and industry detection standards.
Featuring a PXK series positive pressure explosion-proof analytical shelter (compliant with GB3836.17), this system is specifically built for flammable and explosive environments such as petroleum, petrochemical, natural gas, and air separation industries. Leveraging extensive field experience, we offer highly customized, safe, and durable solutions tailored to your specific process monitoring needs.
Working Principle
Depending on site conditions, the GCS-70 can utilize either extractive sampling or direct positive pressure injection. The sample gas is drawn through PTFE heated sample lines, where it undergoes initial pretreatment (moisture removal and dust filtration) before entering the online GC.
The gas is quantified via a highly inert sample loop, then switched into the chromatographic column for separation. The separated components sequentially enter detectors such as the Flame Ionization Detector (FID) or Thermal Conductivity Detector (TCD). A built-in processor calculates the results, which are displayed on the central control unit and simultaneously transmitted to the remote control room.
Core Advantages & Features
1. Advanced Process GC Detection
Utilizes industrial gas chromatography methods compliant with international standards. It offers a short analysis cycle, high measurement accuracy, and fully continuous automatic monitoring capabilities. Detectors can be customized to include FID, TCD, or FPD based on specific application requirements.
2. Heated Sample Lines & Pretreatment
Sample lines are fully trace-heated and temperature-controlled to prevent condensation loss in high-temperature, high-humidity gas applications. A high-precision pretreatment unit removes dust and moisture while regulating pressure and flow, protecting the analyzer and ensuring accurate data.
3. Explosion-Proof Safety Shelter
The analyzer is housed in a certified positive pressure explosion-proof shelter, ensuring safe operation in Zone 1 and Zone 2 hazardous areas.
4. Unattended Operation
Engineered for long-term stable operation, the system allows for unattended, continuous monitoring, significantly reducing maintenance workload and operational costs.
Technical Specifications
| Parameter | Specification |
| Protection Rating | IP65 |
| Explosion-Proof Mark | Ex d e mb [ia] IIB T4 Gb |
| Working Pressure (Shelter) | 50 ~ 100 Pa |
| Internal Net Volume | 13 m³ |
| Input Gas Source | 0.4 ~ 0.8 MPa (Compressed air or instrument air) |
| Input Gas Flow Rate | 5 m³/min |
| Minimum Purge Time | 30 min |
| Filtration Precision | < 5 μm |
| Output Signal | 4 ~ 20 mA |
| Communication Protocol | RS232 or RS485 (Protocol: Modbus RTU) |
Typical Applications & Analytes
The GCS-70 is highly versatile and capable of analyzing complex industrial gas matrices. Typical applications include:
- Coke Oven Gas Analysis: Precise measurement of H2, CH4, CO, CO2, CnHm, O2, and N2.
- Blast Furnace Gas Analysis: Continuous monitoring of blast furnace byproduct gases.
- Light Hydrocarbon Analysis: Detailed speciation of C1-C5+ hydrocarbons.
- Petrochemical & Refinery Gas: Real-time monitoring of process streams, natural gas quality, and trace sulfur compounds (with FPD).
- Air Separation Units (ASU): Purity verification of O2, N2, and Ar streams.
