HYDROGEN LEAK DETECTORS

Brand	Owner (click to sort)	Address	Description
EXTRIMA	INFICON HOLDING AG	Hintergasse 15B Bad Ragaz 7310 Switzerland	Hydrogen leak detectors;
EXTRIMA	Inficon AB	PO Box 76 SE-581 02 Linköping Sweden	Hydrogen leak detectors;
EXTRIMA	Adixen Sensistor AB	PO Box 76 SE-581 02 Linköping Sweden	Hydrogen leak detectors;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

In a hydrogen gas line where the composition of the gas is primarily hydrogen, impurities present in the gas line will typically reduce the speed of sound. Accordingly, an acoustic sensor can be used in such a hydrogen gas line to indicate when impurities have accumulated in the gas line. In particular, the hydrogen gas line may be in a fuel line for an electrochemical fuel cell system. The sensor may comprise transducers, more particularly piezoelectric transducers, as both sound detectors and/or sound generators. Further, the sensor can measure either the speed or frequency of sound to determine the hydrogen concentration. If the fuel is recirculated back to the anode inlet, such a hydrogen sensor in the anode exhaust may be used to determine when it is beneficial to purge the anode exhaust to the external atmosphere.