1. Shandong Wanlianda Instrument Co., Ltd. has been focusing on analytical instruments for 30 years and become a leader in the field of domestic analytical instruments. Our high-frequency infrared carbonsulfur analyzer has 5 classical features: integrated design of highfrequency combustion furnace and infrared analyzer; two independent operating systems; reducing filter cleaning frequency significantly by using ultra-porous metal filters; more stable analytical gas flow by using gas mass flow controller; supporting wild measurement range including high-content carbon, low-content carbon, high-content sulfur and lowcontent sulfur.

project 901B 901K 902T 902G 902C 902S 300

Sales targets

Production units with sufficient budgets, scientific research units, universities and other units that have high requirements for analysis results Scientific research units, production units with scientific research needs, units that require comprehensive coverage of the testing range of carbon and sulfur elements Production process control of general manufacturing enterprises Production process control of general production enterprises, units that pay more attention to carbon monoxide Production process control of general manufacturing enterprises, units that have low carbon testing needs but have limited budgets Production process control of general production enterprises, units that have testing needs for high sulfur but have limited budgets Production process control of general manufacturing enterprises Detector 4 sets (high carbon, low carbon, low sulfur, carbon monoxide) 5 sets (high carbon, low carbon, high sulfur, low sulfur, carbon monoxide) 2 sets (high carbon, low sulfur) 3 sets (high carbon, low sulfur, carbon monoxide) 3 sets (high carbon, low carbon, low sulfur) 3 sets (high carbon, high sulfur, low sulfur) 2 sets (high carbon, low sulfur) electron tube ceramics ceramics Glass Glass Glass Glass Glass light source Nichrome wire Nichrome wire Nichrome wire Nichrome wire Nichrome wire Nichrome wire Nichrome wire modulating motor Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Switzerland (30,000 hours without failure) Absorption pool coating material gold plated gold plated gold plated gold plated gold plated gold plated gold plated flow meter digital quality digital quality digital quality digital quality digital quality digital quality digital quality Analysis scope C1:0.001-50% (can be expanded to 100%) C1:0.001-50% (can be expanded to 100%) C:0.0001-20%(can be expanded to 100%) C:0.0001-20%(can be expanded to 100%) C1:0.0001-20%(can be extended to100%) C:0.0001-20%(can be expanded to 100%) C:0.00002-10% C2:0.00001%-0.5% C2:0.00001%-0.5% S:0.00001-5%(expandable) S:0.00001-5%(expandable) C2:0.00001-0.5% S1:0.1-60% (expandable to 100%) S:0.00002-5% S1:0.00001%-5%(Scalable) S1:0.1%-60% (expandable to 100%) S:0.00001-5% (Scalable) S2:0.00001-5% S2:0.00001%-5% Detector sensitivity O.01ppm O.01ppm O.01ppm O.01ppm O.01ppm O.01ppm O.1ppm Accuracy Standard (RSD) C：≤0.4% C：≤0.4% C：≤0.5% C：≤0.5% C：≤0.5% C：≤0.5% C：≤0.6% S：≤1.0% S：≤1.0% S：≤1.5% S：≤1.5% S：≤1.5% S：≤1.5% S：≤1.5% carbon monoxide compensation have have none have none none none Temperature compensation have have have have have have none pressure compensation have have have have have have have flow compensation have have have have have have have Peak width compensation have have have have have have have Automatic dust removal have have have have have have have filter Metal micropores Metal micropores Metal micropores Metal micropores Metal micropores Metal micropores Metal micropores Pneumatic components Japan SMC Japan SMC Japan SMC Japan SMC Japan SMC Japan SMC Japan SMC way of communication serial port serial port serial port serial port serial port serial port serial port Combustion power 2.5KW 2.5KW 2.5KW 2.5KW 2.5KW 2.5KW 2.5KW

Summary of CS-902T High-Frequency Infrared Carbon/Sulfur Analyzer

As the most competitive product from WLD, the CS-902T High-Frequency Infrared Carbon/Sulfur Determinator currently has numerous users domestically. The design principles of the entire system can be succinctly summarized as: high conversion rate, high reliability, strong stability, easy maintenance, and simple operation.

2.1 High Conversion Rate

A high conversion rate means that during sample combustion, the system employs a method of "initially high oxygen flow followed by controlled oxygen" to ensure a high conversion rate of carbon/sulfur. The advantages are as follows:

• A high carbon conversion rate enables more accurate analytical results. However, during intense combustion, some carbon binds with oxygen to form carbon monoxide.
• A high sulfur conversion rate ensures the accuracy of sulfur analysis results, placing it in a leading position in the international market.
• High combustion efficiency reduces the impact of environmental temperature and barometric pressure variations on the conversion rate of analytical samples, thereby significantly enhancing the long-term stability of the system.

2.2 Strong Stability

Based on fundamental theories, factors that may affect the accuracy of analytical results include: sample uniformity and contamination, tungsten particle size, oxygen particle size and crucible impurities, sample combustion conversion rate (high or low), percentage of carbon not combusted or converted to carbon monoxide, percentage of sulfur converted to sulfur dioxide, gas flow stability, whether the gas path is blocked or leaking, infrared detection system stability, ambient temperature influence, infrared detection system's background carbon dioxide interference, and signal distortion caused by infrared system signal saturation.

The CS-900 Series High-Frequency Infrared Determinators incorporate the following design considerations to address these interference factors:

2.2.1.1 Temperature Compensation

The system utilizes temperature compensation design to mitigate issues where ambient temperature interferes with the stability of the infrared signal.

Why the system adopts temperature compensation:

• Ambient temperature changes are inevitable, regardless of how well-insulated the indoor environment is. The system must use temperature compensation to eliminate the influence of ambient temperature determined by the inherent properties of infrared components.
• Considering the low reliability of thermostat devices domestically, the system adopts a design with temperature compensation. Although the results are not better than those of thermostat devices, working reliability is significantly improved. If the system were to use thermostat devices like LECO, users would frequently need to repair them.

Compensation Design:

• The system uses a temperature sensor to detect the internal current temperature in real-time. Each instrument undergoes high/low temperature testing before leaving the factory, obtaining specific parameters for analytical results affected by temperature, which are then integrated into the analytical algorithms.

Advantages:

• The instrument can operate not only in comfortable environments like laboratories but also in relatively harsh conditions.
• Adaptability to harsh environments is greatly enhanced.
• Users only need to calibrate with standard steel once when turning on the instrument and do not need to use standard steel again within the same day.

2.2.1.2 Gas Flow Compensation

According to analytical theories, the stability of analytical results heavily relies on gas flow stability. Our design uses a Digital Mass Flow Controller, which collects instantaneous gas flow signals (unachievable with a Variable Flow Meter), allowing us to use instantaneous gas flow in software programming. Advantages include:

• Minimizing interference in analytical results caused by small gas flow fluctuations during high oxygen consumption.
• Gas flow compensation can immediately trigger an alarm and assess gas flow stability when issues like unstable or clogged gas flow occur.

2.2.1.3 Peak Width Compensation

Analytical theories indicate that infrared detection systems exhibit saturation, meaning that the relationship between gas concentration and voltage values is non-linear. For the same sample, during actual analysis, slower processes yield lower curve peaks, while faster processes yield higher peaks. Instead of performing a simplified area integration, peak width compensation is introduced at this time. The advantages are:

• Effectively improves system repeatability.
• Peak width compensation significantly enhances the linearity of the system and widens its operational range.

2.2.1.4 Background Interference-Purging

Variations in atmospheric carbon dioxide concentration greatly influence the stability of analytical results. The CS-900 Series High-Frequency Infrared Carbon/Sulfur Determinators adopt a sealing concept. After users turn on the instrument, the system automatically seals the carbon detection system and purges residual atmospheric gases, ensuring that analytical results within the same day are not affected by ambient carbon dioxide concentration variations.

Advantages:

• Carbon analysis results are unaffected by variations in ambient carbon dioxide concentration.
• Highly improves the repeatability and reproducibility of each analytical result.
• Greatly enhances adaptability to harsh environments.

2.2.1.5 Digital Mass Flow Controller

It is the only domestic instrument that adopts a Digital Mass Flow Controller. The advantages are:

• Good long-term stability eliminates the influence of factors like temperature and pressure on the stability of the Variable Flow Meter.
• Main imported instruments, such as LECO, HORIBA, and ELTRA, all use Digital Mass Flow Controllers.
• As an official product, the Digital Mass Flow Controller was first adopted by the North China Research Institute of Electro-optics to replace the primary Flow Meter, improving the pass rate of infrared lens coating from 20% to 99%.

2.3 High Reliability

In response to the current state of the domestic industry, our power devices are designed with a "big horse pulls small bicycle" approach. Specifically, the system utilizes components whose rated power is several times larger than the actual required power during operation. This ensures high operational reliability and reduces the failure rate of the system, thereby significantly minimizing losses caused by system failures.

2.3.1 Infrared Detecting System

Our company has been granted independent intellectual property rights for the CS-900 Series Infrared Carbon/Sulfur Determinator, which features the following:

• Signal Amplification: The system uses specific thick-film circuits to amplify signals, ensuring good long-term stability and largely eliminating the influence of ambient temperature and pressure.
• Temperature Compensation: Considering that the infrared detecting system can be inevitably influenced by temperature, the system includes temperature monitoring and applies temperature compensation to analytical results.
• Swiss Modulating Motor: Known for its strong stability, this motor enables the Mean Time Between Failures (MTBF) of the instrument to reach 30,000 hours.
• Light Source Efficiency: To counteract inevitable light attenuation, a special coating is added to the outside of light sources, significantly improving their efficiency, reducing their working temperature to 500ºC, prolonging their lifespan, and ensuring strong system stability.
• Durable Components: Buttons, cylinders, and solenoid valves all have a longevity of over 100,000 operations.

2.3.2 High-Frequency Induction Components

Component Name Requirements Rated Values SCR Withstand voltage: 220V
Current: 15A Withstand voltage: 600V
Current: 50A High-voltage Silicon Stacks Withstand voltage: 4000V
Current: 600mA Withstand voltage: 15,000V
Current: 2A High-voltage Capacitors Withstand voltage: 4000V Withstand voltage: 15,000V

2.3.3 Gas Route System

• Unique Gas Route Reverse-Purge Design: Advantages include cleaning the filter every two years, cleaning the furnace part after analyzing 1,000 samples, significantly reducing the workload for operators and the cost of instrument maintenance, and automatic dust collection.
• Metal Nut Connectors: Ensure the tightness of the gas system, provide easy operation, and have minimal leakage.
• Metal Interface and Chamber Structure: The interior is gilded, providing good long-term stability, excellent gas adsorption, and resistance to corrosion.
• Japan SMC Valves: Support good long-term stability.

2.4 Easy Maintenance & Plain Operation

• Cold Pressing with Equal Torque: Applies cold pressing with equal torque to connectors, effectively preventing cold soldering issues.
• Anti-Error Plug Design: Features an anti-error design for plugs, preventing components from burning out due to user errors during maintenance or incorrect plug placement.
• Interchangeable Preamps: Allows for quick failure checks as the same type of preamp can be interchanged.
• Three Key Analysis: Simplifies operation with a "three keys analyze" function that automatically moves the crucible pedestal up and down, reducing user workload.
• Automatic Balance Recognition: The system can automatically recognize main balances from domestic markets, including Sartorius, Mettler, Ohaus, and Shanghai balances.
• Weight Storage Function: Enables users to continue weighing samples during analysis, improving operator efficiency. The system can store up to 10 data points.
• Channel Naming: Allows users to easily select different analytical methods for various samples by changing channel names.
• Separate Analytical Parameters for 40 Channels: Supports 40 channels with completely separate analytical parameters, accommodating different sample characteristics.
• Timely Software Updates: The instrument provides timely software upgrades, which are free of charge.
• Exploration of Special Sample Curves: The 40 channels with separate analytical parameters allow users to explore analytical characteristic curves for special samples.
• One Key Recovery Function: Enables the system to return to its original state under specific conditions.
• User Management Function: Provides different competencies for users at various levels.
• Record Diary: Logs main daily affairs, aiding in error tracking and daily management.
• Alarm Function: Provides timely alarms when specific conditions arise within the system.
• Powerful Database: Allows users to conveniently check previous analytical results and detailed analytical processes for the most recent 500 samples.

Comprehensive Introduction for CS-902T

The CS-902T High-frequency Infrared Carbon/Sulfur Determinator is an advanced analytical instrument designed through an integrated infrastructure that combines a high-frequency combustion part with an infrared analysis part. This combination offers several outstanding characteristics, making the CS-902T highly efficient and reliable for a variety of applications.

Key Features:

Wide Analysis Scope: The CS-902T can analyze both carbon and sulfur across broad ranges.

Carbon (C):

• Detection range: 0.0001 to 20% (extendable to 100%).
• Relative Standard Deviation (RSD): 0.5%.
• Sensitivity: 0.1 ppm.
• Compliance: Meets GB/T 20123-2006 standards for carbon analysis.

Sulfur (S):

• Detection range: 0.00001 to 5% (extendable).
• Relative Standard Deviation (RSD): 1.5%.
• Sensitivity: 0.1 ppm.
• Compliance: Meets GB/T 20123-2006 standards for sulfur analysis.

Versatile Analysis Samples: The CS-902T is capable of analyzing various types of samples including:

• Steel
• Ferroalloy
• Nonferrous metals
• Ores
• Rare earth elements, etc.

Dual Detecting Systems: The instrument features two distinct detecting systems:

• High Carbon Detecting System: Specifically designed to handle high concentrations of carbon.
• Low Sulfur Detecting System: Tailored for accurate detection of low sulfur levels.

Technical Specifications:

• Integration Infrastructure: Combines high-frequency combustion with infrared analysis for comprehensive material characterization.
• High Precision: Ensures accurate and reproducible results with minimal standard deviations.
• Extended Range Capabilities: Both carbon and sulfur detection ranges can be extended to accommodate a wider variety of samples and analytical requirements.

In summary, the CS-902T High-frequency Infrared Carbon/Sulfur Determinator stands out due to its wide analysis scope, high precision, and versatility in handling different sample types. Its dual detecting systems further enhance its capability to deliver accurate results, making it an essential tool for laboratories and industries requiring reliable carbon and sulfur analysis.

Main Features

1. Hardware Features:

• Separate Infrastructure: Includes a high-frequency combustion device and infrared detecting systems.
• Hewlett-Packard Desktop Computer: Equipped with a liquid crystal display and inkjet printer.
• Standard Metal Connectors: Ensure the tightness of the gas system; Japan SMC valves support continuous analysis of more than 100,000 samples.
• Unique Gas Route Reverse-Purge Design: Enables continuous analysis of more than 1,000 samples without cleaning the furnace part.
• High Precision Digital Mass Controller: Eliminates the influence of outside factors such as temperature and pressure. Its accuracy and stability surpass those of the Variable Flow Meter.
• Infrared Detection Device: Characterized by an integrated design of optoelectronics, exquisite and durable structure, with reliability and stability meeting J standard levels.
• Swiss Modulating Motor: Can operate continuously for 30,000 hours without error.
• Ultra-micropore Stainless Steel Metal Dust Filter: Durable and anti-corrosive, requiring no cleaning.

2. Software Features:

• Curve Storage: The system can store 20 carbon curves and 20 sulfur curves. It also supports user-defined analytical curves.
• Compensation Algorithms: Deploying temperature, gas flow, and peak width compensation algorithms to enhance analytical result accuracy.

3. Additional Features:

• High Precision Electronic Balance: Accurate to one-thousandth; automatically recognizes Sartorius, Shanghai balance, Mettler, and Ohaus balances.
• Analytical Results Transmission: Can be transmitted to a printer for printing or to other computers via serial ports or through LAN (UDP/IP protocol).
• Large Screen Display: Analysis results can be transmitted to a large screen for on-site display.

Commitment for Quality and After-sale Services

WLD commits to the following:

Training: Two operators per user will receive training to ensure the normal use of the instrument after purchase.

Professional Installation and Debugging: Professional technical personnel will install and debug every instrument sold, ensuring timely service.

Quality Assurance: Every instrument produced is rigorously debugged and tested. If an instrument fails despite normal usage, free repair or replacement of any part(s) will be provided. (This obligation does not cover labor for installing replacement parts, nor does it apply to failures due to accidents, abuse, neglect, or misuse contrary to WLD instructions. Normal pricing applies if the instrument is damaged.)

Rapid Response: Rapid response for instrument repair inquiries will be provided within 30 minutes. Technical personnel will reach customer locations within 48 hours.

Continuous Quality Improvement: WLD is committed to continually enhancing instrument quality. Users will receive free and timely software updates when upgrades are available. Expendable items and other related items will be available at preferential prices.