LEAK TESTING
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LEAK TESTING Leading solutions for your leak detection and integrity test challenges

LEAK TESTING Leading solutions for your leak detection and integrity test challenges Why leak tests? Leak tests play an important role in our daily safety, environmental protection and the reliability of production processes and products of our daily lives. The application spectrum is diverse. A large part of the applications can be found in the automotive industry. Fuel, brake, cooling and airbag systems are just a few examples for the importance of reliable leak tests. In addition, refrigeration and air conditioning technology as well as packaging integrity in the medical, pharmaceutical...

Pfeiffer Vacuum Pfeiffer Vacuum is one of the world‘s leading suppliers of testing equipment and vacuum technology. In addition to powerful detection systems, our product portfolio also includes vacuum pumps, measuring and analysis equipment, components and vacuum chambers. We benefit from more than 50 years of experience in leak detection. Pfeiffer Vacuum unites the leading pioneers in the field of leak detection. Our French development teams brought the first commercial helium leak detector to market in 1966. Only two years later, Pfeiffer Vacuum introduced the counter-flow principle in...

LEAK DETECTION CHALLENGES From the definition of the requirements to the selection of the correct method to the execution of the test procedure Leakage rate requirements The selection of the optimal leak detection method often begins with the definition of the necessary tightness requirement. This is often stated in the refrigeration and air-conditioning technology in a mass loss per time, for example, „grams per year“ or „ounces per year“. Other industries describe a leak by its diameter in micrometer. Other common units are the SI-unit Pa · m³/s or mbar · l/s. The table opposite gives an...

Leakage rate in mbar ■ l/s6) Leak rate in standard ccm Description Leak diameter, pipe-shaped geometry11 Leak diameter, orificeshaped geometry21 Outflow of 1 cm3 air31 Bubble test Sound or ultrasonic sensor Ultrasonic bubble test Pressure rise Pressure decay Micro-Flow Mass Extraction Optical emission spectroscopy Leak detector, mass spectrometry, sniffing Leak detector, mass spectrometry, vacuum Waterproof Oil-tight any any any any any various various N2, Ar, CO2,H2O Tracer gases 4He, 3He, H2 Tracer gases 4He, 3He, H2 ■51 11 Leak diameters are calculated according to different models....

LEAK TESTING WITH AIR: MICRO-FLOW OR MASS EXTRACTION Fast and reliable leak detection for packages and electronics as well as for industrial and medical applications Micro-Flow – The leading air leak testing technology The Micro-Flow technology measures the volume flow through a leak. If gas leaks out of the part to be tested, the equipment maintains a dynamic pressure balance by replenishing the gas flow. This gas flow is passed through the sensor and measured. The patented geometry of the sensor amplifies the signal and allows the measurement of very low leakage rates up to 5 · 10-4...

Product examples For a more complete overview of our products, visit our website. www.atcinc.net at) Pressure/ vacuum range Air path: Pressure reservoir to test unit Measuring with Micro-Flow sensor: Tracer gas flow (mostly air) Mass Extraction Vacuum reservoir Air path: Test unit to vacuum reservoir Measuring with Mass Extraction sensor Extracted gas (mass) Key advantages/ customer benefits ■ Multi-standard approved test method (such as USP <1207>, pharmaceutical and SAE, automotive) ensures process safety ■ Higher efficiency of the test procedure compared to pressure change methods thanks...

OPTICAL EMISSION SPECTROMETRY Integrity test for highly sensitive drug packaging and advanced sealed components The procedure The AMI by Pfeiffer Vacuum is particularly suitable for pharmaceutical applications with its optical emission spectroscopy. Reliable integrity of primary packaging of pharmaceuticals is of paramount importance to ensure sterility and prevent the ingress of microbiological substances, oxygen or moisture. No specific tracer gas is required for this patented procedure. Instead, the gas mixture present in the cavity of the packaging is used to perform highly sensitive...

Versatile and high performance technology for various applications Specific test chambers are designed according product format. Key advantages/ customer benefits ■ Low detection limit and wide measuring range increase the efficiency compared to conventional methods ■ Safety through user-independent and deterministic test results with high repeatability ■ Easy to use due to automatic calibration based on traceable test leaks and good/bad results ■ High flexibility - Applicable for various types of packaging such as blister packs, pouches, vials, plastic bottles and other components ■ Cost...

LEAK DETECTION WITH TRACER GAS Highest sensitivity for leak detection in high-end applications, for example, in the automotive, medical and semiconductor industry The leak detection with tracer gases – in particular, helium leak detection – is still the commercially used test method with the lowest detection limit on the market. In addition to its high sensitivity, the leak detection with tracer gas offers additional advantages. It is non-destructive, of high repeatability, conforming to a variety of standards and faster than other methods. Additionally, the tracer gas detection can locate...

Product examples For a more complete overview of our products, visit our website www.pfeiffer-vacuum.com Gas flow into the object Integral vacuum test Sniffing test: Integral test at atmospheric pressure Vacuu m te st: Spray test 11 Highly sensitive leak test mode: 2) Gross leak test mode Key advantages/ customer benefits ■ Helium leak detection has the lowest detection limit of all commercial test methods ■ Additional advantages in te rms of test time and accuracy ■ Pfeiffer Vacuum has the most experience in tracer gas leak detection ■ Modern and easy-to-use user interfaces ■ Largest...