Carbon Sulfur Analyzer

Carbon Sulfur Analyzer

Test Application
Metal Testing Equipment
Cement Testing
Spectroscopy & Analytical Instruments

Carbon Sulfur Analyzer Available Models:

  • High-Frequency Infrared Carbon Sulfur Analyzer - QT-CSA-3500
  • Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G
Applications

High-Frequency Infrared Carbon Sulfur Analyzer - QT-CSA-3500:

The Carbon Sulfur Analyzer - QT-CSA-3500 utilizes high-frequency heating and infrared detection principles, in conjunction with the latest combustion and full-range detection technology. Widely utilized in the steel, powder metallurgy, non-ferrous, magnetic materials, new energy, third-party testing, research institutes, and other industries, this analyzer can quickly and simultaneously analyze carbon and sulfur in steel and its alloys, non-ferrous metals, powder metallurgy, rare earth, NdFeB, ores, and other materials. The technology can be applied to analyze carbon and sulfur in solid materials.

Stability and high efficiency of high-frequency power ensure the complete combustion of the full sample, along with an excellent shielding effect against high-frequency interference.

Carbon Sulfur Analyzer

 

Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G

The Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G is an advanced infrared carbon and sulfur analyzer with cutting-edge technology. To accommodate the diverse range of samples and analytical methods used by customers, the instrument is equipped with two sets of sample pretreatment units: a high-frequency induction furnace and a tubular resistance furnace. Both the resistance furnace and the high-frequency induction furnace utilize the same infrared detection system for analyzing the content of the output gases. Switching between the two furnaces is a simple process.

The QT-CSA-3500G Dual Combustion Furnace Infrared Carbon Sulfur Analyzer is versatile, allowing for the detection of carbon and sulfur in a wide variety of samples, including steel, cast iron, alloys, metal ore, ceramics, cement, lime, rubber, coal, coke, refractory materials, carbide, graphite, oil, catalysts, soil, and other solid materials.

Carbon Sulfur Analyzer

Instrument Principle:

The Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G operates based on the specific requirements for specimen detection, allowing users to choose either the resistance furnace or an induction furnace as the specimen treatment unit. After purification, the combustion furnace receives imported carrier gas (oxygen), causing the specimen in the high-temperature combustion furnace to oxidize into CO2, CO, and SO2. Following de-dusting and dehydration, the resulting oxidation products are loaded into the sulfur detection cell by the oxygen for sulfur content determination.

Subsequently, the oxygen, along with the gas mixture, enters the heated catalytic furnace, where catalytic oxidation occurs, converting CO into CO2 and SO2 into SO3. After sulfur removal, the gas mixture is sequentially directed to the high-carbon detection cell and low-carbon detection cell by the oxygen for carbon content determination. The remaining gas is then discharged. The analytical results for carbon and sulfur content are displayed in the form of % C and % S on the computer's analysis software and are automatically stored for future retrieval.

The analysis software can generate analysis reports as needed, which can be printed using an external printer. The QT-CSA-3500G Dual Combustion Furnace Infrared Carbon Sulfur Analyzer can swiftly and accurately detect carbon and sulfur content in various materials. It is user-friendly, easy to operate, and convenient for maintenance.

Features/Advantages

Features of The High-Frequency Infrared Carbon Sulfur Analyzer - QT-CSA-3500:

Modular Setup:

  • Infrared Detection Unit: Four independent infrared channels at a maximum; a high sulfur channel can be achieved based on customer requirements. Pyroelectric solid-state infrared detectors are utilized.
  • Motor: Swiss-imported synchronous motor adopted, capable of continuous operation without breakdown.
  • Light Source: Imported infrared source, not easily oxidized; stable optical performance.
  • Temperature Control: The temperature of the IR cell remains stable to ensure measurement accuracy.
  • Copper Oxide Catalysis Furnace (Optional): Converts trace CO into CO2, ensuring complete detection for carbon; converts SO2 to SO3, which is absorbed by cotton to ensure environmental friendliness.

Instrument Self-Check Function:

  • Stable and sensitive flow control: High-precision pressure difference electronic flow control technology is employed.
  • Gas-Saving Mode: The instrument automatically shuts off the oxygen flow at the end of each analysis, promoting efficient gas usage.

User-Friendly Analysis Environment:

English operating software compatible with the Windows 10/11 system for easy user access and free updates.

Flexible Quality Input Modes:

  • Automatic reading
  • Manual reading
  • Manual input
  • Automatic crucible tare

Automatic Range Switching: Automatically switches between high and low ranges for carbon and sulfur.

Flux Blank Deduct: Automatically deducts flux blank value.

Abundant Information Display:

  • Release curve comparison and storage
  • Data result statistics
  • Quick data query
  • Maintenance reminders
  • Monitoring of important instrument parameters

Additional Checks:

  1. Solenoid Valve Check:

    • Display and independent operation of each solenoid valve.

  2. Signal Acquisition Check:

    • Monitoring of all system acquisition signals.

  3. High-Frequency Status Check:

    • High-frequency countdown preheating.

  4. Baseline Check:

    • Real-time monitoring of each channel baseline.

  5. Automatic Zero Check:

    • Automatic zeroing of the baseline can be achieved through software control.

Features of The Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G:

  • Germany-produced solid-state infrared detector components
  • Flexible control of heating power
  • Support for full manual mode
  • Advanced infrared thermostatic technology
  • Advanced flow control technology
  • Unique computer software
  • First-class linear treatment effect
  • High testing precision
  • Highly reliable circuit components; rich self-diagnostic functions
  • Multiple circuit protections against meltdown
  • Full close-down gas channel with zero dead volume

The application of infrared absorption following high-frequency combustion or tube furnace combustion enables quick analysis of the carbon and sulfur content in solid inorganics.

Software Functions:

  1. Detection of the movement of solenoid valves on gas channels
  2. Detection and adjustment of infrared signals
  3. Fast display of analytical results and analytic curves
  4. Automatic storage of analytical results
  5. Drawing and storage of dynamic release curves
  6. Specimen weight value entry: the software can automatically read the weight values of specimens
  7. Channel Switch: automatic switch among high-carbon channel, low-carbon channel, and sulfur channel

Data Processing:

  1. Stored data can be referenced in multiple ways, such as by date or specimen ID
  2. Screening of data
  3. The statistical treatment of data (mean, standard deviation, relative deviation)
  4. Signal comparison to the release curves of the analytical results

Flow Control:

The analyzer adopts high-precision electronic flow control technology with the Anti-Overshoot System for precise analysis gas flow control.

Catalytic Oxidation in the Copper Furnace:

  1. Prior to entering the Carbon detection cell, the analysis gas undergoes catalytic oxidation in the copper furnace to convert CO in the analysis gas to CO2, ensuring the detection of all CO and CO2 generated in the combustion process.
  2. Converts analyzed SO2 into SO3 and then absorbs SO3 to prevent air pollution.

Dust Filtration:

A specialized dust filter made of powder metallurgy materials is utilized, and automatically cleaned twice during each analysis.

Dual Combustion Furnace Infrared Carbon Sulfur Analyzer Self-checking Function:

  1. Automatically monitors and alarms the overall oxygen pressure at the entrance furnace, the analysis pressure at the rear of the furnace, and the dynamic pressure.
  2. Automatically monitors and alarms the on/off status of the high-frequency furnace.
  3. Automatically monitors and alarms the resetting of the cleaning device within the high-frequency furnace.
  4. The software provides a step-by-step self-checking function, including the monitoring and adjustment of infrared signals and the examination of valve movement on gas channels.
  5. The instrument can be checked part by part with the assistance of the software.

Weighting:

The electronic balance is connected to the computer for accurate specimen weighing. The weight data is automatically sent to the analysis software, and if necessary, the sample weight can be entered manually.

Time for Analysis:

  • High-frequency induction furnace: Typical analysis time is 40-60 seconds.
  • Tubular resistance furnace: Typical analysis time is 150-300 seconds.

Crucible:

  • A high-frequency induction furnace uses a ceramic crucible with a diameter of 25mm and a height of 27mm.
  • A tubular resistance furnace uses a porcelain combustion boat with a length of 87mm, width of 12mm, and height of 10mm.

Combustion Furnace:

  • High-frequency induction furnace: 18MHz, Max 2.7KVA.
  • Tubular resistance furnace: Maximum temperature of 1550℃; Max 4.4KW.
  • The resistance furnace utilizes carborundum heating elements, with the power of heating controlled to extend the elements' life. The furnace's case temperature reaches the operating temperature in approximately 20 minutes.

Pre-treatment of the Crucible:

The ceramic crucible used in the high-frequency induction furnace can undergo pretreatment in the tubular resistance furnace. This dual-use of the tubular resistance furnace enhances work efficiency and analysis reliability.

 

Theory/Method

High-Frequency Infrared Carbon Sulfur Analyzer - QT-CSA-3500:

Reasonable Parameter Settings:

  • Flexible adjustment of analytical parameters based on specific samples.
  • Calibration Methods and Parameters: Establishment and separate storage of calibration methods and parameters for different types of samples. The system allows for an unlimited number of analytical methods.

Powerful Data Management:

  • Database storage for flexible query and statistics.
  • Printing columns can be flexibly set according to user needs.
  • Current analysis data can be exported to Excel from the analysis interface.
  • Data transmission function for seamless integration with LIMS through the network.
Carbon Sulfur Analyzer 

 

Automatic Cleaning of High-Frequency Furnace:

  • The QT-CSA-3500 employs an imported dedicated metal dust filtering device that can be dismantled and cleaned without any tools, offering a simple and quick operation.
  • The combustion chamber is automatically cleaned twice, and dust is automatically removed after each analysis. The dust filter is automatically blown back to prevent the accumulation of dust and enhance the adsorption effect.
Carbon Sulfur Analyzer 

 

Infrared Detection Unit:

  • The QT-CSA-3500's infrared pool detection unit employs non-dispersive, highly sensitive pyroelectric solid-state infrared detectors. The computer automatically calibrates the zero point of the infrared cell.
  • As a standard configuration, the QT-CSA-3500 comes with three independent infrared channels and can be expanded to four according to users' needs to achieve full-range detection.
Carbon Sulfur Analyzer

 

Automatic Switching Between High and Low Ranges:

  • The CS3500 features advanced electronic flow control, utilizing high-precision electronic flow control technology. This technology provides fast feedback response and stable flow control, ensuring the precision of the instrument's analytical data.
Carbon Sulfur Analyzer

 

Carbon Sulfur Analyzer - QT-CSA-3500 Working principle:

Carbon Sulfur Analyzer

 

Formation of the Dual Combustion Furnace Infrared Carbon Sulfur Analyzer - QT-CSA-3500G:

Structure of the Analyzer: The analyzer features a modular structure, including the electronic scale, computer, printer, high-frequency induction combustion host, tubular resistance furnace host, vacuum cleaner, and other modules.

Infrared Detection System:

  1. To meet user needs, the Dual Combustion Furnace Infrared Carbon Sulfur Analyzer with standard configuration is equipped with three separate infrared absorption cells (i.e., three physical channels: two carbon channels and one sulfur channel). Alternatively, as per user requirements, the QT-CSA-3500G series of analyzers can be equipped with four independent infrared absorption cells (i.e., four physical channels: two carbon channels and two sulfur channels).
  2. Detector: The pyroelectric solid-state infrared detector produced in Germany is applied.
  3. Dynamo: The synchronous dynamo produced in Switzerland is applied.
  4. Light Source: The stable anti-oxidation infrared light source produced in the US is applied.
  5. Constant Temperature: The entire chamber is thermostatically controlled to ensure a constant analysis temperature for the accuracy of detection.
  6. Shielding Gas: Oxygen is used for the protection and purification of the infrared light source and the detector by isolating them from the ambient atmosphere, thereby enhancing the stability of analysis and the accuracy of detection.

Typical Data (tube furnace):

Name of the Specimen and Content of Carbon and Sulfur: C61.46; S4.34
Specimen ID

Carbon Mass Fraction

 Sulfur Mass Fraction
1

61.486

 4.410
2

61.286

 4.385
3

61.506

 4.435
4

61.518

 4.293
5

61.471

 4.354

 

Software Interface:

Carbon Sulfur Analyzer

Main analysis window

 

Carbon Sulfur Analyzer

Method window

Technical Specifications

Carbon Sulfur Analyzer QT-CSA-3500 and QT-CSA-3500G Technical Specifications:

Model

QT-CSA-3500

QT-CSA-3500G

Analysis Range

High-frequency induction furnace (500mg sample):

  • LC: 1ppm~0.1%
  • HC: 0.1%~5%
  • LS: 1ppm~0.3%
  • HS (150mg sample): 0.3%~30%

Note: Changing the sample size can extend the analysis range up to 100% 

 

High sulfur absorption pools channel can be customized according to customer needs

High Frequency Induction Furnace(500mg Sample):

  • LC: 1ppm - 0.1%
  • HC: 0.1%～5%
  • LS: 1ppm - 0.3%
  • HS (150mg Sample): 0.3%～30%

 

Tubular Resistance Furnace(500mg Sample):

  • C: 0.01% ~20%
  • S: 0.005% ~20%

 

Note: The measurement range can be changed by changing the measurement quantity.

 

The number of detection cells and sizes can be determined in accordance with the content of carbon and sulfur in specimens of users

Analysis Accuracy

High-frequency induction furnace:

  • LC: 1ppm or RSD ≤ 1%
  • HC: RSD ≤ 0.5%
  • LS: 1.5ppm or RSD ≤ 1.5% 
  • HS: RSD ≤ 1.5%

    High-Frequency Induction Furnace:

    • LC: 1ppm or RSD≤1%
    • HC: RSD≤0.5%
    • LS: 1.5ppm or RSD≤1.5%
    • HS: RSD≤1.5%

    Tubular Resistance Furnace:

    • LC: RSD≤1%
    • HC: RSD≤0.5%
    • LS: RSD≤1.5%
    • HS: RSD≤1.5%

    Sensitivity

    0.01ppm

    Analysis Time

    40 ~ 60 seconds

    High-Frequency Induction Furnace:

    • 40-60 seconds

    Tubular Resistance Furnace:

    • 150-300 seconds

    Sample Quality

    Recommended sample weight:

    • 0.1g to 0.5g, can be adjusted based on carbon and sulfur content

    High-Frequency Induction Furnace:

    • 0.1g-0.5g

    Tubular Resistance Furnace:

    • 300mg/coal(typical value)

    Combustion Furnace

    High-frequency induction furnace:

    • 18MHz, 2.7KVA

    High-Frequency Induction Furnace:

    • 18MHz 2.7KVA

    Tubular Resistance Furnace:

    • Max.20A,Max.1550℃, the temperature can be adjusted continuously

    Dust cleaning

    The dust in the combustion tube of the high frequency induction furnace is wiped off automatically
    Detector

    Solid-state pyroelectric detector

    Carrier Gas

    Oxygen purity:

    ≥ 99.5%; 0.2-0.4Mpa

     

    		 Oxygen 99.5%, 3L/min

    Power Gas

    Nitrogen (industrial grade)

    		 Nitrogen or Compressed Air

    Power Supply

    Power Supply of the Analyzer:

    • 220VAC±10% 50±1Hz 16A

    Power Supply of the Analyzer:

    • 220VAC ±10%,50±1Hz,16A

    Power Supply of the Resistance Furnace:

    • 220VAC ±10%, 50±1Hz, 20A

    Weight

    Approximately 100kg

    High-Frequency Induction Furnace:

    • 100kg

    Tubular Resistance Furnace:

    • 30kg

    Dimensions (width × depth × height)

    55 × 76 × 77 (cm)

    The Analyzer:

    • 55 x 77 x 76 (cm)

    Resistance Furnace:

    • 33× 52 × 60 (cm)

    Resolution of the Electronic Balance:

    • 0.1mg
    Chemical Reagent  

    Magnesium perchlorate,CO2 absorbent
    Contact_Us
    Please Contact Us for pricing, check availability, or ask for additional information about our Carbon Sulfur Analyzer

    Contact Us

    1-877-884-8378