GC-4095(A) Portable Gas Analyzer for Coal Mines

Product Introduction

The GC-4095(A) portable gas analyzer for coal mines is a mine-use portable gas chromatograph that can be operated directly in the on-site disaster-relief environment underground. It features high sensitivity and high accuracy in the analysis of common gases, enabling rapid and precise measurement of gas parameters in underground disaster scenarios, as well as analysis and identification of explosive hazards, thereby providing valuable decision-support information for mine rescue command personnel.

Product Features

● Supports both automatic and manual sampling, equipped with a built-in computer-based analysis and processing system that enables real-time data analysis and immediate result generation, providing a scientific basis for rescue operations.

●The gas composition is analyzed as comprising oxygen, nitrogen, methane, ethylene, ethane, acetylene, carbon monoxide, carbon dioxide, and other components;

● Employs a high-precision gas thermal conductivity sensor based on silicon microtechnology, featuring low power consumption, a wide temperature range, high sensitivity, a low detection limit, and high measurement accuracy.

● Lightweight at only about 6 kg, compact in size, and featuring a novel design; equipped with a built-in carrier gas cylinder and a rechargeable lithium battery, making it ideal for emergency monitoring and on-site analysis. It can be carried with one hand, replacing gas analysis laboratory vehicles and other similar equipment.

● Built-in explosion-proof battery that provides over 72 hours of operation without any external power source;

● Short analysis cycle: the entire analysis takes no more than 13 minutes;

● Convenient to use: only one carrier gas is required; no fuel gas or oxidizer gas is needed.

● Non-destructive testing, enabling secondary analysis and detection of the gas under test;

●The instrument’s storage capacity can hold 2,000 test results and 56 sets of raw test data, which can be backed up to a computer via the workstation. The raw data can be reanalyzed on the workstation, while the result data is saved as text files, facilitating data extraction for report generation or statistical reporting.

●When used in conjunction with a coal-mine gas analysis data-processing system (which features a built-in explosion-triangle analysis module), the instrument’s data can be transmitted directly to the workstation, enabling more convenient data processing and analysis.

Technical Specifications

1. Host

1.1 The chromatograph is equipped with a ten-port valve injection system, with an optical coupler installed on the valve to ensure exceptional retention-time accuracy and more precise data.

1.2 Weight: ~6 kg

1.3 External dimensions: Length 310 × Width 160 × Height 250 (mm)

1.4 Power Supply: 12.6V, 1.8A rechargeable battery

1.5 Battery operating time: more than 8 hours

1.6-inch large-screen touch LCD display

1.7 The LCD screen can display battery level, analysis time, power-on switch, mode-switch button, page-turn button, signal level, chromatogram of the component being measured, and component concentration graph.

1.8 The peak height or area data and concentration values for each component can be read out by connecting via the USB output cable to a data workstation.

1.9 dual-channel design, O ₂ N ₂ CH ₄  CO is on channel A, CO ₂   C ₂ H ₄ C ₂ H ₆ C ₂ H ₂ Located on Channel B

1.10 Detection Limits: The detection concentration for C2H4 shall be no less than 50 µL/L, and the detection concentrations for CO, C2H2, and C2H6 shall each be no less than 100 µL/L.

1.11 Quantitative repeatability: ≤3%

1.12 Chromatographic analysis confirms that the product meets O _2. N _2. CH _4. CO, CO _2. C ₂ H _4. C ₂ H _6. C ₂ H ₂   Eight-component assay parameters, along with a screenshot of the workstation software that displays these eight components.

2. EW-GC-95 Coal Mine Gas Analysis Data Processing System

2.1 All-Chinese Windows XP, Windows 7, and Windows 10 operating system platforms

2.2 Chromatographic methods for quantitative analysis, including the external standard method, internal standard method, and normalization method, are employed.

2.3 Sampling sensitivity: 0.1 μV/s;

2.4 Measurement range: -1 V to 1 V;

2.5 Number of detectable peaks: 2,000;

2.6 Chromatogram storage capacity: 20 times/hour;

2.7 Measurement accuracy (linearity): ±0.2%

2.8 Repeatability: ±0.1 (peak area); ±0.2 (peak height)

2.9 Software Containing the Explosion Triangle