Exhibitor Products

02 Mar 2026

INFICON's LDS3000 leak detector ensures liquid tightness in data centre cooling

INFICON Stand: J110
Quick disconnect couplings (QDC) have become indispensable in liquid-cooled data centres, especially in direct-to-chip liquid cooling. Placed between the rack manifold and the servers, and sometimes also between the cold plate and internal piping, they significantly simplify handling. The two-part QDC, consisting of a plug and socket, makes it easier to connect the coolant fluid lines – without tools. Likewise, the lines can be easily and safely disconnected again if necessary, for example when replacing individual cold plates or servers – without the risk of fluid leakage. 

This type of dry-break design for QDCs is now standard in data centres. QDCs also reduce downtime, as they eliminate the need to drain the liquid propylene glycol from the refrigerant circuit during maintenance operations. However, all these advantages only apply under one condition: every single QDC – including plug, socket, seals and valve mechanism – must be absolutely leak-proof. 

Our compact leak detector LDS3000 for vacuum leak testing systems enables leak testing of liquid cooling components such as QDCs. The LDS3000 can be used for both end-of-line testing and testing in earlier production phases. The device works according to the helium vacuum method. It detects helium tracer gas escaping from leaks in the test object into a vacuum test chamber. The smallest detectable leak rate is in the range of E-12 mbar∙l/s. With such small leak sizes, not only the liquid tightness but also the gas tightness of a component is guaranteed. The LDS3000 is characterised by its particularly high sensitivity and reliability. It also enables a very high throughput at the leak testing stations in the production line – testing is carried out synchronously with production.

Only such careful leak testing on the production line can ensure that the handling advantages offered by quick disconnect couplings in liquid cooling systems do not ultimately come at the price of an increased risk of potentially catastrophic fluid leaks in the data centre. 

At our stand J110, we will be happy to advise visitors to Data Centre World on all questions relating to the leak tightness requirements of their cooling systems – from liquid to immersion cooling – and explain how this leak tightness can be ensured with reliable, test gas-based testing methods. 

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