company news about How to Clean and Maintain the Automatic Vapor Pressure Test Machine

How to Clean and Maintain the Automatic Vapor Pressure Test Machine

The automatic saturated vapor pressure tester is a crucial equipment used in the fields of petrochemicals, fuel testing, and scientific research for measuring the vapor pressure of products such as gasoline and volatile crude oil. Its reliable operation directly affects the accuracy of the test data, so regular cleaning and maintenance are of vital importance. This article will introduce the basic steps for cleaning and maintenance, helping users ensure the long-term stable operation of the instrument and meet the requirements of national standards such as GB/T 8017 and ASTM D323.

I.  Cleaning steps: Ensure test accuracy and environmental safety

The instrument should be cleaned regularly to eliminate the interference of contaminants on the test results and to extend its service life. Before cleaning, please make sure to disconnect the power supply to ensure safety.

1. Water bath cleaning:

The instrument adopts an electro-hydraulic separation design. The water bath structure is clearly visible and easy to clean. It is recommended to empty the water in the water bath after each use, then gently wipe the inner wall with a soft cloth or soft brush to remove scale or impurities. When refilling the water, use distilled water or deionized water to reduce mineral deposits, which helps maintain the temperature control accuracy of the 37.8℃ water bath and ensure test consistency.

2. Cleaning of the test projectile:

The instrument can accommodate 3 test projectiles at the same time. These projectiles are prone to come into contact with the residual samples during the rocking back-and-forth movement. After each test, the projectiles should be removed promptly, and the interior should be cleaned with a mild solvent (such as petroleum ). Then, wipe it dry with a clean cloth. Be careful not to use corrosive cleaners to prevent damage to the projectile structure and affect the accuracy of the pressure range. 

3. External and display screen cleaning:

Use a dry soft cloth to wipe the instrument's casing and LCD screen. Avoid allowing water to seep into the internal circuitry to protect the full Chinese interface and printing function. Do not press the screen during cleaning to prevent damage.

4. Printer Maintenance:

If the instrument is equipped with a printer, regularly clean the paper scraps and dust to ensure the print head is clean, so as to guarantee that the test results are printed clearly.

II. Maintenance Key Points: Ensuring Long-Term Stability and Compliance

The maintenance work focuses on preventive inspections to ensure that the instrument operates normally within an ambient temperature range of 5℃ to 40℃ and a relative humidity of no more than 85%, in accordance with industry standards.

1. Temperature calibration:

The water bath temperature is the key factor affecting the quality accuracy. It is recommended to compare the water bath temperature with a standard thermometer every month. If the deviation exceeds ±0.1℃, calibration according to the manual is required. Stable heating technology helps reduce temperature fluctuations, but regular checks can prevent potential errors.

2. Pressure sensor inspection:

The pressure sensor is responsible for monitoring the pressure changes within the test range. The connection of the sensor is checked once every quarter to ensure its firmness, and the accuracy of the readings is verified using a standard pressure source. If any abnormalities are found, contact a professional immediately for adjustment to ensure that the test results comply with national standards.

3. Lubrication of moving parts:

The rocking-back-and-forth motion of the projectile is a key part of the test. Every six months, a small amount of lubricating oil is added to the movement track and hinge parts to reduce wear and noise, ensuring the smoothness of the test process.

4. Electrical safety inspection:

It is recommended to inspect the power cord and internal circuits once a year to ensure there is no aging or short-circuit risk. This not only enhances safety but also prevents test interruptions caused by power issues.

5. Recording and Verification:

After maintenance, the date and content should be recorded, and a blank test should be run to verify the instrument's condition. This helps to track performance trends and ensures its continued applicability in industries such as petroleum product testing.

III. Summary: Standardized operations enhance the value of the instruments

Proper cleaning and maintenance not only can ensure the quality accuracy and test range reliability of the automatic saturated vapor pressure tester, but also can extend its service life and support users to meet the strict requirements of national standards such as GB/T 8017. In the industries of petrochemicals, fuel research and quality monitoring, such instruments are important tools for obtaining reliable data. Daily maintenance of these instruments should be given high priority.