DFYF-109Z Fully Automatic Open Cup Flash Point Tester (ASTM D92 / GB/T 3536)

DFYF-109Z Fully Automatic Open Cup Flash Point Tester (ASTM D92 / GB/T 3536)

1. Customer Pain Point + Solution

Pain Point:

For quality control in petroleum products, lubricating oils, fuel oils, bitumen, and related materials, flash point and fire point are among the most critical safety indicators — directly impacting transportation, storage, and end-use safety. However, traditional manual flash point testing presents numerous challenges: significant human error — variations in ignition, sweeping, and flash point determination between different operators lead to scattered results; poor repeatability — even the same operator may obtain inconsistent results across different test runs; complicated operation — requiring manual ignition, sweeping, observation, and recording, with high demands on operator experience; uncompensated atmospheric pressure effects — test results obtained at different altitudes and weather conditions cannot be directly compared without manual correction calculations. How can you achieve efficient, standardised, and automated flash point testing without compromising accuracy?

Our Solution:

The DFYF-109Z Fully Automatic Open Cup Flash Point Tester is designed and manufactured in strict accordance with ASTM D92 and GB/T 3536 standards. It features a 7-inch colour touch screen for intuitive operation. The instrument offers two preset test modes (A/B) for flexible selection. With a single press of the start button, the instrument automatically heats and performs sweep ignition. When the flash point is reached, the test arm automatically lowers, detects, and prints results. After test completion, the instrument automatically cools down, ready for the next test. The instrument is equipped with an imported temperature sensor achieving 0.1°C accuracy with repeatability of ≤4°C — far superior to traditional manual methods. A built-in atmospheric pressure sensor automatically corrects for environmental pressure effects — no manual calculation required. The instrument features an integrated gas supply — no need for users to purchase or connect external gas cylinders; it is ready to use out of the box.

Customer Value:

You no longer need to tolerate large human errors, poor repeatability, or complicated operation in traditional flash point testing. The DFYF-109Z provides a one-touch, high-accuracy, high-repeatability fully automatic flash point testing solution — featuring a 7-inch touch screen, automatic arm lowering and sweeping, built-in pressure correction, and integrated gas supply — making your flash point testing more efficient and more reliable.

2. Technical Parameters Table

3. Product Highlights

Compliant with ASTM D92 / GB/T 3536 – Globally Recognised
The DFYF-109Z is designed and manufactured in strict accordance with ASTM D92 (ASTM International standard) and GB/T 3536 (Chinese national standard). The two standards are technically equivalent, both employing the Cleveland Open Cup method for determining flash and fire points of petroleum products. Test results are mutually recognised worldwide, meeting the testing requirements for export and international cooperation.

7-inch Colour Touch Screen – Intuitive Operation with Dual Preset Modes
The instrument is equipped with a 7-inch colour LCD touch screen with a clear and intuitive interface. Two preset test modes (A/B) are available — allowing flexible selection based on different sample characteristics without complex parameter setup. Compared to traditional push-button operation, training costs are significantly reduced, and new operators can become proficient in a short time.

Imported Temperature Sensor – 0.1°C Accuracy, ≤4°C Repeatability
Using an imported high-precision temperature sensor, temperature resolution reaches 0.1°C, ensuring accurate and reliable flash point detection. Repeatability of ≤4°C is far superior to traditional manual methods — meaning test results for the same batch of samples are highly consistent across different times and operators, greatly enhancing the credibility of quality control.

One-Button Start – Fully Automatic Test Workflow
With a single press of the start button, the instrument automatically completes the entire sequence: set expected flash point and related parameters → automatic heating to target temperature → automatic sweep ignition → automatic flash point/fire point detection → automatic result printing → automatic heating stop and fan cooling, ready for the next test. No manual intervention is required throughout the entire process.

Automatic Arm Lowering and Sweeping – Fully Compliant with Standard Requirements
Per ASTM D92/GB/T 3536 requirements, the test arm must automatically lower for sweep ignition near the flash point. The DFYF-109Z achieves fully automatic lowering and sweeping — at the specified temperature point before the set flash point, the test arm automatically lowers and the igniter automatically sweeps across the sample surface. Precise timing and consistent action fully comply with the standard's strict operational requirements, eliminating variation caused by manual operation.

Built-in Atmospheric Pressure Sensor – Automatic Correction, No Manual Calculation
Flash point test results are significantly affected by ambient atmospheric pressure — lower pressures at high altitudes result in lower flash points, while higher pressures at low altitudes yield higher flash points. Traditional methods require operators to manually record barometric pressure and apply correction formulae. The DFYF-109Z features a built-in high-precision atmospheric pressure sensor that continuously monitors ambient pressure and automatically corrects and compensates the result to standard atmospheric pressure. Time-saving, labour-saving, and error-free.

Integrated Gas Supply – Ready to Use, No External Cylinders Required
The instrument features an integrated gas supply — users do not need to purchase or connect external gas cylinders (such as LPG or propane). This is particularly important for overseas customers — eliminating the hassle and safety risks of cylinder procurement, transportation, and storage. The instrument is ready for use upon delivery.

Stainless Steel Test Table – Corrosion-Resistant and Easy to Clean
The test table surface is made of stainless steel — corrosion-resistant and easy to clean, suitable for long-term frequent testing of petroleum products and chemicals, avoiding the corrosion and cleaning difficulties of ordinary materials.

Self-Diagnosis Function – Minimises Downtime
The instrument features a self-diagnosis function that automatically alerts operators to fault types in case of anomalies, enabling quick fault location and resolution, minimising downtime and ensuring laboratory work continuity.

4. Application Scenarios

Scenario 1: Lubricant Manufacturer – Batch Quality Control
A major lubricant producer in East China uses the DFYF-109Z for open cup flash point testing on every finished product batch. Operators simply set the expected flash point value and press start — the instrument automatically completes heating, sweeping, detection, and result printing. The built-in pressure sensor automatically corrects for environmental pressure effects, ensuring test data obtained in different seasons and weather conditions are directly comparable. The A/B modes on the 7-inch touch screen allow operators to quickly switch between different viscosity grades, significantly improving quality inspection efficiency.

Scenario 2: Third-Party Testing Laboratory – High-Volume Commissioned Testing
A national-level oil testing centre in North China receives large numbers of fuel oil, solvent oil, and bitumen samples for flash point testing each month. The DFYF-109Z's fully automatic process — automatic heating, detection, printing, and cooling — significantly increases daily throughput. The integrated gas supply eliminates the inconvenience of frequent cylinder replacement, while the self-diagnosis function ensures long-term stable operation. The imported temperature sensor's 0.1°C accuracy and ≤4°C repeatability guarantee authoritative and reliable data for every test report.

Scenario 3: Fuel Oil Trader – Import/Export Commodity Inspection
A company engaged in fuel oil import/export trade uses the DFYF-109Z for flash point inspection on every batch of imported and exported fuel oil. Strict adherence to ASTM D92 ensures test results are consistent with overseas clients and inspection bodies. Fully automatic operation enables non-specialists to become proficient quickly. The built-in pressure correction ensures test result comparability across different countries and regions. The stainless steel test table remains clean and corrosion-free even after frequent testing of fuel oil samples.

Scenario 4: Petrochemical Research Institute – New Product Development
A petrochemical research institute uses the DFYF-109Z to evaluate the flash point characteristics of new lubricants and specialty oils. The 0.1°C accuracy temperature sensor enables precise determination of flash point differences between formulations, providing accurate data for formulation optimisation and Safety Data Sheet (SDS) preparation. The parameter customisation capability of the 7-inch touch screen allows researchers to flexibly adjust test conditions to meet the specific requirements of different R&D projects.

5. Company Strength – Dalian Analytical Instrument Factory

We don't just sell instruments. We provide complete testing solutions with 48-hour technical support response and lifetime remote assistance.

6. Certification & Compliance

Standard Compliance: Fully conforms to ASTM D92 and GB/T 3536 standards

CE Marking: Available upon request (certificate number can be provided)

Calibration Certificate: Each unit comes with a factory calibration report traceable to national standards, verified using certified flash point reference materials

7. FAQ – Frequently Asked Questions

Q1: What is the relationship between ASTM D92 and GB/T 3536?
A: ASTM D92 is the international standard for open cup flash point testing established by ASTM International. GB/T 3536 is the Chinese national standard "Determination of Flash and Fire Points of Petroleum Products – Cleveland Open Cup Method" — the two are technically equivalent. The DFYF-109Z fully complies with both standards, making test results mutually recognised worldwide.

Q2: What is the difference between open cup and closed cup flash point?
A: Open cup flash point testing (where the sample cup is open to the atmosphere) is suitable for relatively high-boiling petroleum products such as lubricating oils, fuel oils, and bitumen. Closed cup flash point testing (where the sample cup is sealed) is suitable for low-boiling, volatile petroleum products such as gasoline and solvent oils. The two methods use different standards and test procedures and cannot be substituted for each other.

Q3: Why is a built-in atmospheric pressure sensor necessary?
A: Flash point varies with ambient atmospheric pressure — lower pressure results in lower flash point. Standards require that test results be corrected to standard atmospheric pressure (101.3kPa). The built-in atmospheric pressure sensor continuously monitors and automatically applies the correction — eliminating manual recording and calculation, preventing human error, and ensuring test result comparability across different regions and seasons.

Q4: What is the difference between the A and B test modes?
A: The A and B modes correspond to different standards or different sample type requirements (such as heating rate, sweeping frequency, termination conditions, etc.). Users can flexibly select the appropriate mode based on sample characteristics and test standards without resetting parameters each time, simplifying the operation process.

Q5: What does "integrated gas supply" mean?
A: The DFYF-109Z features a built-in gas supply system — users do not need to purchase or connect external gas cylinders (such as LPG or propane). The instrument is ready to use upon delivery, eliminating the hassle of cylinder procurement, transportation, storage, and replacement, while also removing the safety risks associated with high-pressure cylinders.

Q6: How is the instrument prepared for the next test after completion?
A: After flash point/fire point detection, the instrument automatically stops heating and activates the fan for forced cooling. Once cooled to a safe temperature, the next test can be performed. The fully automatic cooling process requires no manual intervention, significantly reducing waiting time between batch tests.

Q7: What is your delivery time?
A: Standard delivery is 20–25 working days after order confirmation. For urgent needs, please contact us to check current stock.

Q8: What is your warranty policy?
A: 12 months from the date of shipment, excluding consumables (ignition wires, etc.). Lifetime technical support is included.

8. Test Method Overview – Building Trust Through Transparency

Per ASTM D92 / GB/T 3536, here is exactly how the DFYF-109Z performs the open cup flash point test:

The entire process — from heating to data output — is fully automated. The built-in atmospheric pressure sensor automatically corrects results to standard atmospheric pressure — no manual intervention required.

Summary for Decision Makers

Contact Us

Dalian Analytical Instrument Factory
Carlos Zhang (Overseas Sales Manager)

�� Tel / WhatsApp / WeChat: +86 18740265556
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�� Address: 1-1, No.107 Guangxian Road, High-Tech Zone, Dalian, Liaoning, China (Zip code: 116023)

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