The host is connected to a vacuum attenuation chamber, and the sample is placed in this testing chamber for vacuum pumping. There is a pressure difference between the inside and outside of the sample, and gas enters the vacuum attenuation chamber and the host through a leakage hole. The host uses pressure sensors and differential pressure sensors to monitor the vacuum degree changes in the testing chamber, and determines whether the sample is qualified based on the vacuum degree changes. Non destructive testing of injection bottles, penicillin bottles, and ampoules can be achieved.

Testing method for vacuum attenuation sealing instrument:

Single sensor testing technology: A single sensor generally refers to the use of a pressure sensor, which is connected to the testing chamber and determines the test results based on the pressure changes of the sensor. This technology has low detection accuracy and can generally detect 5ccm (about 25 μ m leakage). The detection accuracy depends on the precision of the pressure sensor.

Dual sensor testing technology: generally refers to the use of pressure sensors and differential pressure sensors in combination, using dual chamber comparative testing, and judging the test results by monitoring the pressure changes of the differential pressure sensor. This technology has high detection accuracy and can distinguish leaks below 3 μ m.

Multi sensor testing technology: By adding force sensors or other types of sensors on the basis of dual sensor technology, the testing accuracy and precision can be improved through multi-sensor comparison, and the leakage aperture can be calculated.