The instrument detection, inspection, certification, and test methods of bulk milk refrigeration tanks are key steps to ensure that their performance meets relevant standards and requirements. The following is a detailed description of these methods:

1. Inspection and inspection methods
Sealing test
Method: Check the sealing of the tank cover, interface, weld, etc. by pressurizing or vacuuming to ensure that there is no gas or liquid leakage.
Instrument: Pressure testing equipment, vacuum pump, etc.
Temperature control performance test
Method: Test whether the refrigeration tank can stably maintain the required low temperature under different external environmental conditions. This includes tests on constant temperature, cooling rate, and thermal insulation performance.
Instrument: Temperature sensor, temperature recorder, thermostat (used to simulate external environmental conditions), etc.
Insulation performance test
Method: Place the refrigeration tank in a high-temperature environment, and calculate the insulation time and heat dissipation rate of the refrigeration tank by measuring the change in temperature inside the tank.
Instrument: High-temperature test chamber, temperature sensor, timer, etc.
Pressure test
Method: Apply a certain pressure to the refrigeration tank to test whether its structure can withstand the pressure within the specified range and evaluate its pressure resistance.
Instruments: pressure testing equipment, pressure sensors, etc.
Welding quality inspection
Methods: Use ultrasonic testing, radiographic testing (X-ray or gamma ray), magnetic particle testing, and penetration testing to check defects inside and on the surface of the weld.
Instruments: ultrasonic detector, X-ray flaw detector, magnetic particle flaw detector, penetration testing agent, etc.
2. Certification and testing process
Preparation phase
Clarify the purpose and standard of testing.
Prepare corresponding testing equipment and tools.
Train and guide testing personnel.
Implementation phase
Test the various properties of the refrigerated tank according to the test methods and standards.
Record the test data, analyze them, and process them.
Record and feedback on the problems found during the test.
Evaluation and certification phase
Evaluate the performance of the refrigerated tank according to the test data and standards.
Write a test report, including the purpose, method, results, and conclusions of the test.
If certification is required, submit the test report to the relevant certification body for review and certification.
3. Precautions
Accuracy and reliability of testing equipment: Ensure that the testing equipment used is calibrated and verified, and has accuracy and reliability.
Professionalism and skills of testers: Testers should have corresponding professional knowledge and skills to correctly operate the test equipment and interpret the test results.
Control of the test environment: During the test process, environmental conditions such as temperature and humidity should be strictly controlled to ensure the accuracy of the test results.
Compliance with test standards: During the test process, relevant standards and requirements should be strictly followed to ensure the compliance and validity of the test results.
In summary, the measuring instrument testing, inspection, certification, and test methods of bulk milk refrigeration tanks cover many aspects, including sealing, temperature control performance, thermal insulation performance, pressure resistance, and welding quality. Through the implementation of these methods, the performance of refrigeration tanks can be comprehensively evaluated to ensure that they meet relevant standards and requirements, providing strong guarantees for the storage and transportation of dairy products.