Helium spectrometry

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PRINCIPE Electrons, give out by the filament, ionize the molecules inside the chamber. Ions produced are launched to the electrode. A magnetic field deviate ions He+ on the measure target to create an electrical current proportional to the number of He+ ions. DIFFERENT METHODS - Global hard vacuum test. - Spraying test. - Sniffing test. - Bombing test.

Pressure variance

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PRINCIPE The piece to test and the reference piece are simultaneously air pressurized. A differential manometer control the pressure variance functions of the time. The sensitivity is function of the volume and is formulated by the following relation : VdP/dt avec dP/dt = 1Pa.s-1.

Bubble test

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PRINCIPE The piece is immersed in the water and air pressurized. The operator observe the air bubbles formation exit from the possible leaks. This techniques, essentially visual, does not reach the industrial quality standard.

Download documentation about leak testing methods (PDF)

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File	Fil size	Lang.	56k	128k	512k/ADSL
ce_fr.pdf	3100ko		7'33"	3'06"	0'46"	Available
ce_gb.pdf	-		-	-	-	Unavailable
ce_de.pdf	2386ko		5'49"	2'23"	0'36	Available

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