Sealing tester is also divided into a variety of, first of all, depending on what specimen you want to do the sealing test, usually the sealing tester is divided into positive pressure method sealing tester and negative pressure method sealing tester. If in the case of meeting the demand, the quality of equipment, performance parameters, scope of application, equipment manufacturers, after-sales service, etc., are necessary to consider
Negative pressure sealing tester is through the vacuum chamber vacuum, so that the specimen immersed in water to produce the internal and external pressure difference, observation of the specimen in the escape of the gas situation, in order to determine the sealing performance of the specimen; by vacuum chamber vacuum, so that the specimen to produce the pressure difference between the internal and external, observation of the specimen expansion and the sealing performance of the specimen. By vacuuming the vacuum chamber, the specimen produces internal and external pressure difference, observe the specimen expansion and release the vacuum after the specimen shape back to the situation, so as to determine the sealing performance of the specimen.
Positive pressure sealing tester is a system that adopts the principle of positive pressure testing, controlled by a microcomputer, expansion inhibition, expansion non-inhibition of the dual test method, rupture test, creep test, creep to rupture test a variety of test modes to distinguish the judgment of the sealing performance of the specimen.
What is a seal tester?
Sealing tester is also called air tightness tester, air leakage tester, leakage tester, etc., has been testing the workpiece whether there is leakage for the purpose. But strictly speaking, the real no-leakage workpiece does not exist, as long as the leakage in the allowable range, the workpiece is regarded as a qualified product, so the sealing tester is mainly based on the size of the leakage to determine whether the workpiece is qualified.
With the development of society, more and more products in the factory before the need for sealing test, around the common into the home gas valves, food packaging, waterproof performance of cell phone watches, etc., sealing test is actually very close to our lives is very close.
The development of the sealing test is actually very long, we are familiar with the bicycle tire leakage, the repairman often put the tire full of gas into the water to observe where the bubble, which is the earliest sealing test, commonly known as the blister method. And some products are not easy to put into the water, so the seal tester came into being. The basic principle is the pressure drop method. Previously, most of the direct pressure method, but now mainly take the differential pressure method, according to the workpiece end and the standard end of the pressure difference to determine the size of the leak.
At present, there are many domestic and foreign production seal tester manufacturers, in comparison, the quality of foreign products is slightly higher than domestic products, the disadvantage is that the price is relatively high. Domestic manufacturers are also more, with the continuous growth and experience of manufacturers, their product performance is also improving, generally can meet the requirements of most of the workpiece testing.
Selecting a seal tester generally need to consider the differential pressure range, pressure range, accuracy, stability and so on several indicators, and stability is mainly associated with the product design structure, quality of accessories, software and so on. The main method is more communication.
Technical Parameters of Sealing Tester
Touch Screen Vacuum Seal Tester
Product Model: JHY-MF-300
Product Usage:
Applicable to medicinal glass vials, xylitol vials, plastic solid bottles, blister packages, aluminum-plastic flexible pouches, syringes, pipette tubes, vacuum-packaged bags, canned goods, milk powder bags, aluminum foil bags, Eye drop bottles, medical device packaging, liquid bags, jelly cups, tie caps, cosmetic bottles and bags, daily chemical and other packages negative pressure seal leakage test and microbial invasion test, widely used in pharmaceutical manufacturers, pharmaceutical package manufacturers, drug testing centers, medical device companies, food companies, cosmetic companies, and other industries seal integrity testing.
Test Principle:
To determine the sealing performance of the specimen by vacuuming the vacuum chamber, so that the specimen immersed in water generates internal and external pressure difference, and observes the escape of gas inside the specimen; to determine the sealing performance of the specimen by vacuuming the vacuum chamber, so that the specimen generates internal and external pressure difference, and observes the specimen's expansion and the shape restoration of the specimen after releasing the vacuum. It conforms to GB/T15171 "Test Method for Sealing Performance of Flexible Packaging" and ISO standards.
Product features:
★Touch screen control, so that the operation is more simple, the data results are more intuitive
★Vacuum chamber using highly transparent plexiglass, durable
★Simple and convenient detection
★Automatic constant-pressure make-up, to ensure that the experimental process in the preset vacuum
★Adoption of the vacuum components, stable, durable
★Performance and reliability
The vacuum components. Stable and durable performance
★One-button operation, automatic replacement of the test vacuum, automatic end of the test
The test, automatic blowback unloading
Technical Parameters:
Main chassis dimensions: 400X300X200mm
Vacuum pump power: 250W
Voltage: 50Hz, AC220V
Pumping rate: 1.0%, 1.0%, 1.1%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%. p>
Pumping rate: 90L/min
Effective size of standard vacuum chamber: Φ270X210mm
Volume of standard vacuum chamber: 15L
Vacuum setting range: 0~-90KPa
Measuring time: ≤1800S
Time control precision: 1s
Noise: ≤ 55db
Inflation rate: 2KPa.L/S
Working environment: -20~500?C
Total amount of the whole machine: about 25KG