INFICON Protec P3000(XL) Helium Leak Detector - Manual (Page 33)

How the Protec P3000 Works
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In cases where the main unit is placed in a difficult or inconvenient to access area
the built-in PRO-Check reference leak can be removed from the main unit for easier
access and connected to the main unit via the Sub-D connector with a commonly
available extension cord. The PRO-Check reference leak can then be placed in an
area where it is convenient for the operator to be reached.
Fig. 2-6 PRO-Check reference leak detached from the main unit for remote use
Fig. 2-7 Connections for remote use
Pos. Description Pos. Description
1 Connector at built-in test leak 2 Connector at Protec P3000 housing
1
2