Use of Helium Leak Detectors (HLD)

Technologie du vide
MS115 - 14 hours


Realize an effective detection and interpret the results correctly;
Understand the functioning principles of detectors;
Use the detectors in an appropriate and optimal way in order to maximize the lifespan.



Leak detector users



Prior experience on leak detectors or vacuum installations is preferable.



In order to favour the acquisition of practical know-how (precautions and limitations of use, one or two working methods, functioning of equipment) you will be instructed by handling detectors, observing and analysing different situations.
Maximum 6 persons per group.



Please, contact us.



Training Department : +33(0)4 76 84 40 30

Can be also held in your premises for a specific training.
Each session is limited to 6 trainees.



Michel THIAM: PhD in Physics (Strong Experience in Surface Physics and Surface Chemistry under UHV Conditions), from the 40-30 Engineering Department, Certified NDT Leak detection level 2.



1. Theoretical elements
The principle of seal control using tracer gas
Assessment of the size of a leak
Preparation of parts to be checked
Leak detection methods

2. Mass spectrometry helium type detectors
Constitution of a helium detector
Analysis cell

3. The method selected will be specified to trainers and trainees.
Spray method
Sniffing method
Bombing method
Pressurisation method

4. Detailed study of an ASM 122 D and/or ASM 142
General (presentation of the appliance, technical specifications)
Description (vacuum synoptic, control panel, remote control unit, use)

5. Detailed study of an UL 1000 FAB detector
General (presentation of the appliance, technical specifications)
Description (vacuum synoptic, control panel)
Detailed studies can be made on other models of detector. Please contact us for further details.

6. Precautions and limitations of use
Recovery time
Use limit temperatures Accidental air intake
Remark: stability of a calibration leak
Role of the filter
Large volumes (choice of the pumping set, assembly)