The Cleveland open-cup asphalt flash point analyzer is used to determine the flash point and ignition point of asphalt and petroleum products, and to evaluate the safety performance of materials during heating, storage, and construction. It is widely used in road engineering, petrochemical, and quality testing laboratories, and is an important instrument for testing the safety of asphalt materials.

Cleveland Open Cup Flash Point Tester

Model:TD611-1

I. Product Introduction:

This instrument is designed and manufactured according to the national standard GB/T 3536-2000 "Determination of Flash Point and Fire Point of Petroleum Products (Cleveland Open Cup Method)" and is also applicable to the latest highway industry standard JTG 3410—2025, specifically T0611—2000 "Asphalt Flash Point and Fire Point Test".

The instrument design references international standards ASTM D92, AASHTO T48, ISO 2592, and IP 36, meeting internationally accepted testing method requirements. It can be used in laboratories to determine the flash point and fire point of petroleum products and asphalt materials, meeting the testing needs of multiple domestic and international standards, and is suitable for export and international market applications.

II. Applications and Scope of Application:

This instrument is suitable for determining the flash point and ignition point of viscous petroleum asphalt, coal tar pitch, and liquid petroleum asphalt materials with a flash point above 79℃ using the Cleveland open cup (COC) method. The test results can be used to evaluate the construction safety and performance of asphalt materials.

III. Technical Parameters:

1. Power Supply: AC 220V±10%, 50Hz.

2. Heating Device: Quartz tube electric furnace heating, flameless, explosion-proof, power 0~400W continuously adjustable.

3. Sweeping Device: Equipped with automatic sweeping function.

4. Thermometer: Range -6~500℃, scale division 2℃, conforming to GB/T514.

5. Ignition Device: Ignition source is coal gas or other domestic combustible gas; nozzle diameter is 0.6~0.8 mm.

6. Environmental Requirements: Ambient temperature -10℃~50℃, relative humidity ≤85%.

7. Power Consumption: Not exceeding 650W.

8. Sample Cup Specifications: Cleveland open cup, made of brass or copper alloy, inner diameter 63.5mm±0.5mm, depth 33.6mm±0.5mm, with a ring-shaped marking line engraved on the inner wall at a distance of 9.4mm±4mm from the top of the cup.

IV. Installation and Use:

1. Open the packaging box and inspect the instrument's exterior and related accessories according to the instrument set and technical documents. If there is no damage or missing parts, install it as shown in the structural diagram.

2. Check that the power supply grounding is good.

3. Turn on the power switch; the indicator light will illuminate. Then you can begin the test.

4. Clean the sample cup with solvent, dry it, and place it on the stand.

5. Install the thermometer vertically into the sample cup, with the mercury bulb approximately 6.5 mm from the bottom of the cup. Position the thermometer 16 mm from the edge of the cup on the side opposite the igniter.

6. After preparing the sample, pour it into the sample cup up to the marked line, ensuring no other parts of the sample cup are contaminated with asphalt. (Note: The sample heating temperature must not exceed 55°C below the flash point.)

7. The entire apparatus should be placed in a dimly lit indoor location with minimal air circulation, and protected on three sides by a windproof screen.

8. Connect the igniter to the combustible gas pressure vessel (such as liquefied propane or natural gas) using a flexible hose. Turn the igniter to one side and test ignition, adjusting the flame to a standard spherical shape or a small spherical test flame with a diameter of 4 mm ± 0.8 mm.