Automatic closed flash point tester

This instrument is a key instrument used to measure the flash point of liquid samples. Flash point refers to the lowest temperature at which a liquid sample can produce a mixture of flammable gas and air at a certain temperature and pressure, and can burn. The flash point tester provides important safety indicators for industrial production and laboratory research by providing accurate flash point values. This instrument complies with the national standard GB/T261 and is suitable for determining the temperature at which the mixture of vapor and air heated by the closed cup method for petroleum products ignites under specified conditions.

1、 The principle of automatic closed flash point tester:

The principle used by a flash point tester is usually the flash point tester method, which mainly includes the following steps:

Heating: Place the test sample into the test cup and heat it until the sample begins to release flammable gases.

Spark ignition: Send a test spark above the surface of the sample to check for flame propagation.

Measurement: By continuously heating and igniting the sample, record the lowest temperature at which flame propagation occurs in the sample, which is the flash point.

2、 The application value of automatic closed flash point tester:

Safety assessment: It can accurately determine the flash point of liquid samples and provide effective safety assessment indicators. Based on the measurement results, it can be determined whether the liquid sample is flammable, and corresponding safety measures can be taken to avoid accidents and fires.

Quality control: In the process of liquid production, it can help determine the combustion performance of the product. By monitoring the flash point of product samples, the quality of the product can be evaluated and potential issues can be identified in a timely manner to ensure that the product meets relevant safety standards.

Experimental research plays an important role in laboratory research. Researchers can use this instrument to determine the flash point of different samples, evaluate their combustion performance, and provide reference and basis for research in related fields.

3、 Characteristics and advantages of measuring instruments

Automated operation: It usually has automatic control and data recording functions, with simple and convenient operation, which improves experimental efficiency and accuracy.

High precision measurement: This instrument uses advanced sensors and measurement technology to provide high-precision flash point values, reducing errors and enhancing the reliability of results.

Safe and reliable: Safety factors are considered in the design, and explosion-proof materials and structures are used to ensure the stability and safety of the instrument.

As a key instrument, this instrument plays an important role in industrial production and experimental research. By accurately measuring the flash point of liquid samples, it can evaluate the combustion performance of liquids, assist in safety assessment and quality control, and provide reference for experimental research. In the future, with the continuous improvement of security awareness and technological requirements, it will be widely applied in various fields and make greater contributions to ensuring security.

The automatic closed flash point tester is a highly intelligent instrument used to automatically and accurately measure the temperature at which petroleum products (such as diesel, lubricating oil, fuel oil, residual oil, etc.) ignite instantly when their steam is mixed with air under closed conditions and encounters an open flame (specified standard flame).

The temperature measured is called the "closed cup flash point", which is the most important indicator for evaluating the fire hazard of oil products in production, storage, transportation, and use.

Why is it so important to determine the closed flash point?

The core basis for fire and explosion hazard classification is flash point, which is the direct basis for international and domestic standards (such as GB 30000, GHS, NFPA) to classify the hazard of flammable liquids (such as flammable liquids, combustible liquids). The lower the flash point, the higher the risk of fire.

The standard for safe storage and transportation of oil products: Determine the storage conditions (such as tank type, temperature control) and transportation requirements (such as labels, transportation methods) of oil products based on their flash point. For example, the national standard for the closed flash point of diesel (such as National VI diesel) requires a minimum of 60 ° C to ensure relative safety at room temperature.

Judging whether the oil contains light components: If the flash point of a heavy oil product (such as lubricating oil) abnormally decreases, it may mean that it has been contaminated by light flammable materials such as gasoline and solvents, which is a serious quality and safety hazard.

Product quality control and specification indicators: They are mandatory quality indicators for the factory inspection and trade handover of the vast majority of petroleum products.

working principle

The instrument strictly follows international standards (such as ASTM D93, ISO 2719) and Chinese national standards (such as GB/T 261). Its workflow simulates the classic Binsky Martin closed cup method, but achieves full automation:

Automatic injection and heating: The instrument accurately measures a specified volume (usually 50-70mL) of the sample and injects it into a standard closed cup. Then heat uniformly at a rate controlled by the program (such as 5-6 ° C/min).

Periodic ignition and steam mixing:

At the preset temperature point (or throughout the entire process), the internal igniter of the instrument will automatically generate a standard sized test flame at standard intervals (such as 1 ° C or 2 ° C), and synchronously operate through an automatic stirring system to ensure uniform mixing of steam and air in the cup.

Automatic detection of flash fire:

This is the core technology. The instrument uses highly sensitive optical sensors (phototubes) to detect whether the flame has ignited the mixture inside the cup.

When a momentary, blue flame spread (i.e. "flash fire") is detected inside the cup, the sensor immediately triggers a signal.

Automatic judgment and recording:

The control system captures the sample temperature at the moment of the flash signal and automatically records the temperature as the measured flash point.

After the test is completed, the instrument will automatically calibrate the measured flash point to the flash point value at standard atmospheric pressure based on atmospheric pressure (usually with a built-in pressure sensor).

Automatic reporting and secure termination: The results are automatically displayed, printed, or transmitted to the computer. After the test is completed, the instrument automatically stops heating and can automatically cool and clean.

Technical Indicators:

1. Power supply: AC220V ± 10% 50Hz

2. Heating power: 400W

3. Environmental temperature: 10-30 ℃

4. Range: Room temperature~350 ℃

5. Resolution: 0.1 ℃

6. Repeatability: ≤ 2 ℃

7. Reproducibility: ≤± 4 ℃

8. Lifting method: automatic tilt

9. Detection method: With full Chinese operation software prompt function, automatically correct atmospheric pressure and calculate correction value; Differential detection, automatic correction of system deviation, equipped with parameter prompts such as experimental date and time

10. Automation level: The opening, ignition, detection, and printing of test data are automatically completed by the microcomputer

11. Ignition method: electronic ignition, gas flame, forced air cooling

12. Dimensions: 400 * 350 * 500 Weight: 20kg