Efficient Low-Level Sulfur Analysis
– Trace Precision, Steady Performance
In industries such as petrochemicals, power generation, coal processing, and research laboratories, trace-level sulfur analysis is essential for evaluating product corrosivity, catalyst poisoning risks, and environmental compliance. The DFYF-200 Microcoulomb Titrator is specifically designed for low-concentration sulfur determination, offering excellent sensitivity, stable temperature control, and intelligent operation – making it an ideal choice for trace analysis applications.
1. Wide Measuring Range with Ultra-Low Detection Limit
The DFYF-200 supports sulfur determination from 0.1 mg/L to 10,000 mg/L, with a detection limit as low as 0.1 mg/L (for sulfur). This wide range meets the needs of both ultra-trace and routine sulfur analysis, making it particularly suitable for low-sulfur samples such as light oils, LPG, and aromatics.
2. Precise Temperature Control for Complete Pyrolysis
With an adjustable temperature range from ambient to 1100°C and a control accuracy of ±1°C, the DFYF-200 ensures complete oxidation and conversion of samples in the pyrolysis tube. This stability directly improves the accuracy and repeatability of test results.
3. Strict Reproducibility Error Control
Taking sulfur analysis as an example, the DFYF-200 delivers excellent reproducibility across different concentration ranges:
When X < 0.5 mg/L, error ≤ 30%
When 0.5 mg/L < X ≤ 1.0 mg/L, error ≤ ±0.1 mg/L
When 1.0 mg/L < X ≤ 10 mg/L, Cv ≤ 8%
When X > 10 mg/L, Cv ≤ 3%
This level of precision fully complies with the reproducibility requirements of multiple international and domestic standards for microcoulomb titrators.
4. Multi-Standard Compliance – One Instrument, Multiple Applications
The DFYF-200 is designed in strict accordance with the following industry standards:
SH/T0253 (Determination of sulfur content in light petroleum products)
GB/T 11061.4 (Determination of sulfur compounds in natural gas)
SH/T0222 (Determination of total sulfur in liquefied petroleum gas)
GB/T 3208 (Determination of total sulfur in benzene products)
SH/T1147 (Determination of sulfur content in industrial aromatic hydrocarbons)
This multi-standard compatibility makes the DFYF-200 ideal for inspection agencies, petrochemical enterprises, and third-party laboratories requiring sulfur analysis across various sample matrices.
5. Intelligent Operation and User-Friendly Design
5.1 Computer-Controlled Full-Process Monitoring
The instrument software provides real-time display of titration status, parameters, and curves, with automatic result calculation and printing – reducing human error and improving workflow efficiency.
5.2 Air-Cooled Pyrolysis System with Auto Fan Control
The pyrolysis system uses air cooling, with the fan starting and stopping automatically based on temperature. This hands-free operation protects high-temperature components and extends equipment service life.
5.3 Easy Installation and Simple Operation
The DFYF-200 is designed with user experience in mind – easy to install, reliable, and stable. Even first-time operators can quickly become proficient.
6. Typical Applications
Petroleum refining: Trace sulfur determination in gasoline, diesel, kerosene, naphtha, and other light oils
Natural gas and LPG: Total sulfur content analysis
Chemical raw materials: Benzene, toluene, xylene, and other aromatics
Power industry: Corrosive sulfur detection in transformer oils and turbine oils
Research and education: Sulfur analysis method development in universities and research institutes
7. Key Advantages at a Glance
Feature | Conventional Coulometric Titrators | DFYF-200 Microcoulomb Titrator |
Detection limit | Typically 0.5 mg/L | 0.1 mg/L |
Cooling method | Natural cooling or manual control | Air cooling + auto fan control |
Operation | Keypad + manual recording | Full-screen PC monitoring + auto print |
Standard compliance | Single standard | Covers 5 industry standards |
Reproducibility (high concentration) | Approx. Cv ≤ 5% | Cv ≤ 3% (for X > 10 mg/L) |
8. Service and Support
We provide full technical support – from installation and commissioning to operator training and after-sales maintenance. The DFYF-200 is built on proven microcoulomb titration principles combined with digital control technology, delivering stable performance you can rely on for trace sulfur analysis.
About Us
With nearly 40 years of specialized experience, Dalian Analysis Instrument Factory is a leading manufacturer of petroleum product testing instruments. We are ISO 9001 (2000) certified, ensuring reliable quality assurance in design, production, and after-sales service.
Our product line covers more than 100 varieties, including analyzers for gasoline, kerosene, diesel, lubricating oils, greases, and general laboratory equipment. By combining deep industry knowledge with continuous innovation, we provide high-performance analytical solutions to customers worldwide.
Contact Us
For standard models or customized solutions – we are here to help you improve your sulfur analysis and product quality control.
Sales Email: [lovecarlos2000@gmail.com]
24-Hour Hotline: +86 15941156556
