Dual Canopy Mechanic Electrical Engineering Co., Ltd. is one of the leading manufacturers and suppliers of open cup test method test kit in China. Please feel free to wholesale discount products for sale here and get quotation from our factory. Customized orders are welcome.
What problem does this open cup test method test kit solve?
Those in the industry know that a closed-cup test cup is used for light oils, while an open-cup test cup is essential for heavy oils, lubricating oils, and asphalt.
Our Open Flash Point Tester, also known as the "Cleveland Open Cup (COC)," is specifically designed to determine the open flash point and ignition point of high-flash-point, high-viscosity, and non-volatile petroleum products and chemical liquids. It fully complies with core standards such as ASTM D92, GB/T 3536, and ISO 2592.
In short, if your factory needs to test heavy-duty asphalt, base oils, heavy fuel oils, or various high-viscosity mechanical lubricating oils, this is the machine for you.
Where are the main users of this equipment located?
Highway and building materials systems: Testing the flash point of heavy-duty asphalt and modified asphalt (essential indicators for road construction).
Lubricating oil blending plants: Testing the open-cut flash point of base oils, hydraulic oils, and gear oils.
Oil refineries and oil depots: Factory inspection and safety assessment of heavy fuel oils and residual oils.
Special Purpose Vehicle Inspection Institutes and third-party organizations: Serving as arbitration equipment for random sampling inspections of oil quality.
What are the core features?
1. Temperature measurement:
Temperature measurement:
Temperature measurement range: -59.9℃-399.9℃
Temperature control range: room temperature-399.9℃
Repeatability: ≤150℃ 3℃
＞150℃ 5℃
Resolution: 0.1℃
Accuracy: 0.5%
Temperature sensor: platinum resistance (PT100)
Flash sensor: ion detection ring
2. Ambient temperature: 10-40℃
Relative humidity: ﹤85%
Power supply voltage: AC220V±10%
Power: ﹤500W
3. Heating speed: in line with national standards, the United States, the European Union and other standards
4. Standard COC test cup and heating furnace: Brass oil cup machined strictly according to ASTM D92 dimensions, paired with a high-power ring heating furnace.
What benefits does it bring to customers?
Say goodbye to all-night monitoring: Fully automated machines free lab technicians from high-temperature, fume-filled environments, improving laboratory efficiency.
Data passes blind sample testing: Precise temperature control and stable scanning ensure excellent data repeatability, making it reliable for comparison by higher-level units or third-party organizations.
Reduce consumable waste: Precise ignition control reduces gas consumption by more than 30% compared to older models.
What are the precautions for use?
1. A wind shield is essential! Open-cup tests are extremely sensitive to airflow. During testing, the instrument must be surrounded by wind shields on three sides, laboratory doors and windows must be tightly closed, and air conditioning vents must never blow directly onto the instrument; otherwise, the flash point value can drop by more than ten degrees Celsius.
2. Do not overfill the oil sample. When pouring oil, the liquid level must be exactly at the graduation mark inside the oil cup. Pouring too much will cause the oil to overflow upon heating, invalidating the data and potentially causing a fire.
3. Be careful of splashing when testing asphalt. If the asphalt sample contains moisture, heating it above 100 degrees Celsius will produce foam and even splash. Ensure the sample is dry before sampling, or keep personnel away from the instrument during heating.
How should I perform maintenance and upkeep?
Cleaning carbon deposits and oil stains: After testing heavy oil or asphalt, a layer of black ash will remain on the ignition tube and sensor probe. After each use, wipe clean with a cotton swab dipped in solvent while the oil is still warm.
Robotic arm lubrication: Apply a small drop of light lubricating oil (such as sewing machine oil) to the rotating shaft and slide rails of the sweeping arm every one to two months to keep the sweeping motion smooth. Do not apply too much, as it will attract dust.
Cleaning oil cups: When washing brass oil cups, do not scrape with hard objects. Use a soft brush and petroleum ether to clean them, and then dry them thoroughly.
Pre-sales oversight:
Helping you avoid pitfalls in equipment selection. For example, if you're testing diesel fuel, we'll strongly advise against buying an open-cup model and recommend a closed-cup model instead. We will never sell equipment haphazardly just to make a profit.
Installation and training:
We support one-on-one remote video installation guidance; for bulk purchases or key customers, we can arrange for engineers to install, debug, and conduct on-site training.
After-sales guarantee:
One-year warranty on the entire machine, lifetime maintenance. Free replacement of parts for non-human-caused damage within the warranty period;
FAQ
1. Q: Are the measured values for open-cup flash point (COC) and closed-cup flash point (PM/Tag) the same?
A: No. For the same oil, the open-cup flash point is usually 10°C to 30°C higher than the closed-cup flash point. This is because during the heating process in an open-cup cup, some light oil vapors evaporate into the air. The two cannot be used interchangeably; the selection must be strictly based on the method specified in the product standard.
2. Q: How is the frequency of the ignition sweep controlled?
A: Fully automatic models have a built-in standard program. Sweeping usually begins at 28°C before the expected flash point, and then sweeps once every 2°C increase in temperature. The sweeping time and flame size can be fine-tuned via the screen, fully complying with the requirements of ASTM D92 and GB/T 3536.
3. Q: Is calibration required regularly?
A: It is recommended to calibrate regularly. Especially for units with high consistency requirements for test results, regular calibration helps ensure data accuracy and result traceability.
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