The experimental process of a syringe tightness positive pressure tester usually includes the following steps:
1. Preparation work
Check the equipment: Ensure that the power supply, pressure system, control panel, and other components of the tester are functioning properly without damage or malfunction.
Prepare syringe samples: Select syringe samples according to experimental requirements, ensuring that the syringes are intact, without cracks or damage.
Set pressure value: Set the pressure range for testing according to standard regulations or experimental requirements. In general, the pressure will be set to 1.5 times the rated working pressure of the injector or adjusted according to specific testing requirements.
2. Sample preparation
Install syringe: Install the selected syringe correctly into the clamping device of the tester, ensuring its stability.
Check sealing: Ensure that the sealing components of the syringe (such as rubber plugs, sealing rings, etc.) are intact and undamaged to avoid affecting the test results.
3. Start testing
Apply pressure: Start the tester and gradually apply positive pressure. The tester will automatically monitor pressure changes.
Observing pressure changes: The tester will monitor the changes in pressure over a specified period of time. In an ideal situation, the syringe should be able to maintain stable pressure and should not have significant leaks.
Recording data: The tester will record key data such as applied pressure values and time for subsequent analysis.
4. Test analysis
Judging the tightness: If the pressure continues to decrease or shows abnormal changes after applying pressure, it indicates that the syringe is leaking and the tightness is not qualified.
Leakage detection: Detect the leakage point through the gas sensor or pressure sensor of the tester, and confirm whether the leakage amount exceeds the specified standard.
Confirm the qualification criteria: Compare the relevant standards or specifications to determine whether the sample meets the sealing requirements.
5. End testing and sampling
Stop testing: After completing the test, stop the operation of the tester and remove the sample.
Record and analyze results: Analyze whether the sample meets the sealing requirements based on the recorded data and generate a report. If there are any issues, further inspection or adjustment of the production process is required.
6. Equipment maintenance
Cleaning tester: Clean the sample clamping device, sensors, and other parts of the tester to avoid contamination affecting the next test results.
Regular calibration: Regularly calibrate pressure sensors, gas sensors, etc. to ensure the accuracy of test results.
7. Safety precautions
Personal protection: Operators should wear appropriate protective equipment, such as gloves, goggles, etc., to avoid contact with gases that may be released during the testing process.
Gas leakage emergency: Ensure that the laboratory has good ventilation facilities and the gas leakage alarm system is working properly to ensure the safety of the operating environment.
Through the above operation process, it is possible to ensure the accuracy and standardization of the sealing test process of the syringe, effectively detect whether the sealing performance meets the requirements, and thus ensure product quality and safe use.