Alcatel ASM 121H

The ASM 121H is a small durable multi purpose helium leak detector that is designed for portable use. The unit is ideal for user who needs an easily movable unit and for use with a sniffer attachment.

Services Offered:

  • Basic Repair Service (cleaning, filaments, oil change, valves and gaskets)



The Alcatel ASM 121H is designed to be a durable bench top helium leak detector than can be easily moved into place. Ideal as a low cost maintenance unit or for field service work.


  • Detects leaks as small as 1.0 x 10-10 mbar l/s
  • Internal roughing pump
  • Durable metal design
  • Small and portable


  • Small batch product testing
  • Vacuum Furnaces
  • Storage Tanks
  • Hose systems
  • Valves


  • External test leak
  • Sniffer Probe


Alcatel ASM 121H Manual