TR-JC2000K High-Frequency Infrared Carbon-Sulfur Analyzer
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Description
Product Introduction:
The JC2000K infrared carbon–sulfur analyzer, when used in conjunction with the HW2000 high-frequency induction combustion furnace, enables rapid and accurate determination of the mass fractions of carbon and sulfur in steel, iron, alloys, foundry core sands, nonferrous metals, cement, ores, coke, catalysts, and other materials. This system incorporates advanced foreign technologies and represents a cutting-edge, integrated product that combines optics, mechanics, electronics, computer science, and analytical techniques. It features a wide measurement range, strong anti‑interference capability, comprehensive functionality, user‑friendly operation, and highly accurate and reliable analytical results.
Infrared detection principle:
Polar molecules such as CO2 and SO2 possess permanent electric dipole moments, giving them vibrational and rotational degrees of freedom. According to quantum mechanics, these give rise to quantized energy levels that can couple with incident infrared radiation at characteristic wavelengths, resulting in absorption. Gas molecules exhibit selective absorption spectra in the infrared region; when infrared light of specific wavelengths passes through CO2 or SO2 gas, strong absorption occurs.
Since the detector converts optical signals into electrical signals, when it operates within its linear range, a specific wavelength is selected and the path length of the absorption cell is fixed. Under these conditions, the concentration of the target gas in the gas mixture can be determined from the measured light intensity—this constitutes the fundamental principle underlying the quantitative measurement of gas concentrations by infrared absorption. The instrument employs the following measurement wavelengths: 4.26 μm for CO₂ and 7.4 μm for SO₂.
The analysis chamber comprises a miniature infrared light source, a reflecting mirror, a modulation motor, an absorption cell, a filter, and a detector. The miniature infrared light source is electrically heated to 800°C to generate infrared radiation, which passes through the absorption cell and is absorbed by CO2 and SO2. The radiation then traverses a narrow-band filter that removes all wavelengths except those corresponding to CO2 and SO2, before impinging on the detector. The detector measures the light intensity, which is proportional to the concentrations of CO2 and SO2. This optical signal is converted into an electrical signal by the detector, undergoes normalization and calibration via a microcomputer, and is subsequently subjected to integral inversion to yield the percentage content of carbon and sulfur. A modulation motor is positioned between the light source and the absorption cell to modulate the optical signal into a 64-Hz alternating radiation. The detector output has a center frequency of 64 Hz.
The thermal‑emission sensor converts the signal into an electrical output, which is then amplified by a preamplifier and a subsequent stage before being fed into a microcomputer via a digital‑to‑analog converter. Within the microcomputer, linearization processing transforms the signal into a numerical value proportional to the concentrations of CO2 and SO2.
Technical Specifications:
1. Basic Parameters: Instrument Performance and Accessories
| Element determination | Simultaneous carbon and sulfur analysis |
| Principle of Analysis | High-Frequency Furnace Combustion—Infrared Absorption Method for Detection |
| Scope of Analysis | Carbon: 0.0001%–6.0000% (expandable up to 99.999%) Sulfur: 0.0001%–0.5000% (can be extended to 99.999%) |
| Sample weight (solid steel standard) | Standard 0.5 g |
| Analysis accuracy | Complies with the GB/T 20123-2006 standard. Complies with ISO 15350:2000 standard |
| Sensitivity (minimum reading) | C/S: 0.1 ppm |
| Analysis time | Adjustable from 20 to 100 seconds (typically 35 seconds) |
| Work cycle | 24-hour continuous operation |
| High-Frequency Induction Heating Furnace | 1. High-frequency furnace output power: 2200 W; frequency: 20 MHz 2. Automatic leak detection, over-time and over-current alarms 3. Current/voltage/power/selection mode for regulating furnace temperature: suitable for samples of different materials. 4. Gas Path: A high-precision flow controller ensures stable gas flow and an imported gas‑path system. |
| Dust filter | 0.4-micron ultrafine-pore metal filter, ensuring complete separation of dust from gas. |
| Burner heating | Increase the sulfur conversion rate to ensure stable sulfur analysis results. |
| Dust removal system | Automatic cleaning: helps minimize the impact of dust on analytical results. Ash removal system: high-pressure ash discharge, thoroughly clears dust from the pipelines. |
| Detection system | 1. Circuit Design: The entire system adopts a modular architecture with a dual-CPU master–slave configuration. The slave controller utilizes the Atmega162 microcontroller, and the electronic circuitry is highly integrated, ensuring stable and reliable performance. 2. Sampling: Utilizes the high-speed 24-bit ADS1224 sampling chip, delivering high sampling accuracy. 3. Communication: The master and slave controllers use USB 2.0 interfaces, significantly increasing communication speed. 4. Connectivity: The infrared detection module is connected to the high-frequency furnace via Agilent 1521/2521 high-speed optical fiber, coupled with a multi-stage concealed isolation circuit that completely eliminates high-frequency interference. 5. Power Supply: Industrial-grade integrated linear module power supply, providing stable output with no failures. 6. Light Source: A specially designed, next-generation platinum infrared light source that delivers sustained heat and boasts high spectral efficiency. 7. Analytical Cell: Gold-plated carbon–sulfur analytical cell and high-precision pyroelectric infrared detector; 8. Motor: Stepper motor, with excellent thermal stability and a continuous service life of 100,000 hours. |
2. Analysis Software
| Operating software | Compiled using Deliph software, with a fully Chinese-language operating interface for Windows XP. |
| Analysis Channel | Provides channel management functionality, allowing carbon–sulfur channels to be added, deleted, and edited independently, with no limit on the number of channels. |
| Analysis Function | The analytical process employs dynamic data integration and 20 samples per second, thereby enhancing both the sensitivity and accuracy of the analysis. Provides sample management functionality, allowing users to edit sample names and identifiers, as well as add or delete sample names. The software provides a multi-user management system, allowing administrators to configure distinct user permissions. |
| Display function | One curve frame each for carbon and sulfur, dynamically displaying real-time data during the analysis process as well as the carbon and sulfur release curves. |
| Data processing functionality | The analysis results are stored in an ACCESS database, which can retain all data and curves for each carbon–sulfur analysis. Analysis results can be queried at will, with the ability to filter by time, operator, sample name, identifier, and other criteria. It offers multiple functions, including curve/data storage, blank subtraction, parameter setting, channel selection, statistical analysis, result correction, and curve comparison. The software enables the generation of carbon–sulfur calibration curves and their subsequent curve fitting. |
| Printing function | The printing modes are versatile, offering two options—laboratory and testing station—and allowing users to customize the print layout. |
| Self-diagnosis function | The system diagnostic function enables software‑based testing of the burner head and gas chamber for leaks. |
Part II: Supply List
1. One JC2000K infrared carbon-sulfur analyzer
| Serial number | Component | Quantity |
| 1 | Infrared Carbon-Sulfur Analyzer | 1 |
| 2 | High-Frequency Induction Combustion Furnace | 1 |
| 3 | One-millionth‑gram electronic balance | 1 |
| 4 | Lenovo Commercial Desktop (21.5-inch LCD) | 1 |
| 5 | HP LaserJet printer (A4 paper) | 1 |
II. Spare Parts List for the Infrared Carbon-Sulfur Analyzer
| Name | Specification | Unit | Quantity | Remarks |
| Pressure-reducing valve | only | 1 | Includes a custom-made connector | |
| Tungsten flux | Ultra-low carbon sulfur | kilogram | 1 | |
| Pure iron flux | Ultra-low carbon sulfur | bottle | 2 | |
| Quartz tube | only | 2 | ||
| Dust removal pipe | only | 2 | ||
| Copper crucible holder | only | 1 | ||
| Porcelain crucible holder | only | 2 | ||
| Porcelain crucible | 1,000 pieces/carton | box | 1 | |
| Stainless steel wire brush | only | 3 | ||
| Wire brush | only | 1 | ||
| Tweezers | to put | 1 | ||
| Sample spoon | Large, medium, small | set | 1 | Made of stainless steel |
| Flux spoon | to put | 1 | ||
| Tool | set | 1 | ||
| PVC pipe | 4mm×6mm | rice | 10 | |
| Silicone ring | Red | only | 1 | |
| O-ring | 13mm×1.9mm | only | 4 | |
| O-ring | 37mm×3.1mm | only | 4 | |
| Printing paper | This | 1 | ||
| Vacuum grease | bottle | 1 | ||
| Fuse | 4A, 20A | only | 4 each | |
| Multi-socket outlet | 10A | only | 1 | |
| High-efficiency color-changing desiccant | 125 g/bottle | bottle | 1 | |
| High-efficiency CO 2 Absorbent | 125 g/bottle | bottle | 1 | |
| Ash discharge pipe | Silicone | root | 1 |
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