Language
Search
The DFYF-158 is designed and manufactured in strict compliance with SH/T0175 and ASTM D2274 test methods. It is used to determine the oxidation stability of distillate fuels such as diesel, kerosene, and jet fuel under accelerated conditions.
Technical Specifications
Parameter | Value |
Power Supply | AC 220V ±10%, 50Hz |
Input Power | 3600W |
Temperature Control Range | Ambient ~ 99.9°C |
Temperature Control Accuracy | ±0.1°C |
Timer Range | 0 ~ 99.99 hours |
Certifications – The instrument is produced in an ISO9001:2000 certified facility, ensuring consistent quality and reliability for global customers.
All-in-one design – Integrates water bath, oxygen flow control, temperature regulation, and condensate water circulation in a single unit.
User-friendly oxygen flow adjustment – Flow meter assembly allows intuitive, precise control of oxygen flow to meet test requirements.
Stable temperature uniformity – Digital display controller combined with motor-driven stirring ensures accurate and even bath temperature.
Corrosion-resistant construction – Stainless steel inner bath and powder-coated outer shell resist rust and chemical damage.
Easy mobility – The unit is movable, making it convenient to position in different lab setups.
Modern appearance – Clean, professional design that fits any laboratory environment.
Feature | DFYF-158 | Typical Alternatives |
Flow control | Direct reading flow meter, easy to adjust | Complex or non-intuitive controls |
Temperature accuracy | ±0.1°C, digital PID control | Often ±0.2°C or worse |
Build quality | Stainless steel + anti-spray coating | Many use painted steel that corrodes |
Compliance | SH/T0175 & ASTM D2274 | May only meet one standard |
Mobility | Yes, with wheels | Often fixed or heavy to move |
Key competitive advantages – Longer service life, lower maintenance, and faster out-of-box calibration compared to European or American brands at a more accessible price point.
Dalian Analytical Instruments Factory has nearly 40 years of experience in petroleum product testing equipment. We are one of China’s leading manufacturers, offering over 100 types of instruments for gasoline, diesel, lubricating oil, and more.
Strong technical force – Our engineers have decades of hands-on expertise in high-temperature, low-temperature, and constant-temperature instruments.
Trusted by global customers – Our products are exported to Russia, Indonesia, the UAE, Iran, Thailand, Malaysia, and South America.
Customer-first approach – We provide custom solutions, not just standard products.
The DFYF-158 is essential for:
Refineries – Monitoring oxidation stability of diesel and jet fuel during production.
Third-party testing labs – Certifying fuel quality for import/export and regulatory compliance.
Fuel storage facilities – Evaluating fuel stability before long-term storage.
Oil blending plants – Checking the stability of blended distillate fuels.
Transportation companies – In-house quality control for bulk fuel purchases.
Real-world case – A South American oil company used our instrument to replace a failed European unit and reduced downtime from 4 months to 3 weeks (see our customer success story).
Precise temperature control – The system uses a digital temperature controller that switches the heating tube on/off, combined with motor stirring to maintain ±0.1°C accuracy across the bath.
Stable oxygen flow – The flow meter assembly provides stable, adjustable oxygen flow that meets ASTM D2274 requirements without frequent recalibration.
Condensate circulation – Built-in water circulation prevents condensation buildup, ensuring consistent test conditions.
Long-term reliability – Components are selected for industrial-grade durability, with an average MTBF (mean time between failures) exceeding 5 years in field use.
Every DFYF-158 undergoes a strict quality process:
Incoming material inspection – All stainless steel, electrical parts, and sensors are checked against specifications.
In-process quality checks – Assembly steps are monitored; welding, wiring, and sealing are verified.
Burn-in test – Each unit runs for 72 hours continuously to screen for early failures.
Calibration – Temperature and flow are calibrated against NIST-traceable standards.
Final functional test – A full oxidation stability test is performed using reference fuel oil before packing.
We maintain detailed records for every instrument shipped, ensuring full traceability.
Environmental commitment – Our manufacturing process minimizes waste. The instrument’s energy-efficient design reduces power consumption during long-duration tests (up to 16 hours per run).
Sustainable packaging – We use recyclable materials for export shipping.
Community support – We provide free technical training to local vocational schools in Dalian’s high-tech zone.
We believe that reliable, long-lasting instruments also reduce electronic waste – because a product that lasts 10 years is better for the planet than one replaced every 3 years.
Pre-sales support
Professional consultation to confirm test methods (ASTM, ISO, SH/T) and instrument configuration.
Customization options – We can adapt the operation interface, power requirements (110V/60Hz available), and language support (English, Spanish, Russian, etc.).
Sample testing – We can test your fuel samples in our lab and send you the results before purchase.
After-sales service
Warranty – 12 months standard, with extended warranty options.
Remote support – Video installation guidance, troubleshooting, and calibration assistance via WhatsApp, WeChat, or email.
Spare parts availability – We stock critical components for 10+ years after production.
Training – Free operation manuals and video tutorials in multiple languages.
Our service response time is within 24 hours, and we have local distributors in several countries to provide on-site support when needed.
If you need a distillate fuel oil oxidation stability tester that is accurate, durable, and backed by four decades of expertise, the DFYF-158 is the right choice. It is not a copy of other brands – it is an original design refined through years of customer feedback and continuous improvement.
Contact us today for a quote or to arrange a sample test.
About us
Dalian Analytical Instrument Factory is a professional factory producing analytical instruments for petroleum products. With nearly 40 years of rich production experience, it has various complete sets of production equipment, testing equipment and strong technical force. It provides more than 100 varieties and specifications of various petroleum analysis instruments and general-purpose instruments for the majority of users.
Dalian Analytical Instrument Factory passed the IS09001 (2000) quality management system certification in 2002. It has reliable quality assurance in the design, production and service of high-temperature and low-temperature instruments for petroleum (such as gasoline, kerosene, diesel oil, lubricating oil, etc.) and general constant temperature instruments for laboratories.
