INFICON Sensistor ILS500 Leak Detection System - Manual (Page 57)

Recipes 57
ninb63e1-f (1410)
9.6 Optimizing the Tracer Gas Filling
Regulation of the tracer gas pressure can either be controlled by:
• the ILS500
• an external pressure regulator
9.6.1 External Pressure Regulation
External regulation is recommended mainly for very small objects (<50 cc).
Tracer gas pressure is controlled by external regulator. ILS500 opens a path between
the gas feed line and the test object. The pressure will equate and the tested object will
attain the pressure delivered by the external regulator. ILS500 checks that the fill
pressure is above Fill Setpoint before proceeding to the next test step.
9.6.2 Internal Pressure Regulation
Tracer gas pressure is controlled by the ILS500. Internally regulated filling is generally
faster than externally regulated. The reason for this is that the feeding pressure can be
set higher than Fill Setpoint which results in a higher fill flow.
Notice The ILS500 is set to regulate internally as default.
Notice External Pressure Regulation does not support recipes with different test
pressure (i.e. Fill Setpoints).