Leak Detectors - Vacuum-Guide

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SmartTestHelium leak detection – The right test method for every applicationSelection of the appropriate qualityassurance method for products andproduction processes is based upon thenature and size of the item to be tested.In helium leak detection, a distinction ismade between two different test methods –integral and local leak detection.Integral leak detectionfor determining the total leak rateThe item to be tested is placed in a testchamber, filled with helium to test pressureand tested for leaks. The helium, whichcan egress through even the smallest leaks,reaches the SmartTest unit, enabling leakdetection rates of down to 10 -12 mbar l/s*.Measurement of the total leak rate insmaller test itemsClear GO/NO-GO indicationHighest objective measurement accuracyShort cycle timeThe integral leak detection is suitable foreither sniffer leak detection or vacuum leakdetection.Test chamberevacuatedTest gasTest gasSniffer leak detectionOverpressure-resistant test itemUse of a sniffer probeDetection limit < 5 · 10 -8 mbar l/sVacuum leak detectionVacuum-tight test itemTest item filled with heliumDetection limit < 5 · 10 -12 mbar l/s* 1 mbar l/s = 0.1 Pa m 3 /s = 0.987 sccs4
Helium – The ideal test gasOnly a minute percentage of this gasis contained in the atmosphere, enablingeven the smallest leak rates to be identified.Because of their very low atomic mass,helium atoms move through the air athigher speed. This ensures very fastmeasurements.Further advantages at a glance:Utmost sensitivity in identifying eventhe smallest leaksQuantification of the leaksOutstanding reproducibility of themeasurementHelium test gas is non-toxic andnon-flammableShort measurement timesLocal leak detectionfor identifying individual leaksThe local leak detection, too, is also suitablefor either sniffer leak detection or vacuumleak detection. Sniffer leak detection isperformed by filling the item to be testedwith helium and testing with a sniffer probe.In vacuum leak detection, the item to betested is first evacuated and then sprayedwith helium. Local leak detection identifiesleaks of down to 10 -12 mbar l/s* and providesprecise information about the size andlocation of any leaks.Precise localization of the leak sitein large test itemsIndication of the exact magnitude ofthe leakHigh measurement accuracyRepetitive production defects canbe easily identifiedTest gasTest gasSniffer leak detectionOverpressure-resistant test itemUse of a sniffer probeDetection limit < 5 · 10 -8 mbar l/sVacuum leak detectionVacuum-tight test itemSpraying with heliumDetection limit < 5 · 10 -12 mbar l/s* 1 mbar l/s = 0.1 Pa m 3 /s = 0.987 sccs5
Page 1 and 2: SmartTestHelium Leak Detector.The I
Page 3: Modular conceptBypass optionSmartTe
Page 7 and 8: DimensionsSmartTestHLT 550HLT 560HL
Page 9 and 10: HLT 570 HLT 565 with cart HLT 572 w
Page 11 and 12: AccessoriesExternal test leakRemote

Leak Detectors - Vacuum-Guide

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