Inficon Pernicka 700H CHLD, Translation Of The Original Operating Instructions

Page: 52 / 100

6 | Operation INFICON
52 / 100 Pernicka-700H-CHLD-Operating-instructions-jin76aen1-04-(1911)
Parameter Description
T2 (purge delay) Time in [s]. Waiting time between purging and evacuation
of the valve block.
T3 (Evacuate Cyc) Time in [s]. During this time, the purge gases are pumped
out of the test chamber, from the volume between the 2
sealing rings of the test chamber and from the valve block,
and removed from the system.
V2 cycles Number of cycles according to recipe used. With 500 ms
in the recipe the cycle takes about 1 second. During this
time, helium is pumped from all surfaces as well as from
the volume between the 2 sealing rings on the test
chamber and removed from the system. At the end of this
time, only helium is present in the system, which originates
mainly from the test object.
T6 (vent) Time in [s]. During this time, the test chamber and the
volume between the 2 sealing rings on the test chamber
are purged with purge gas at the end of the measurement
procedure.
Gross Leak threshold Setpoint for the upper limit for the gross leak test. Below
this setpoint, the test objects to be measured do not have
any gross leaks. This value must be greater than any
measured value of test objects without gross leaks. See
also "Set the setpoint for gross leak test [
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SEM Target Parameters related to the SEM amplifier of the CHLD-
Sensor.
► Do not change the default setting.
SEM Target /- Parameters related to the SEM amplifier of the CHLD-
Sensor.
► Do not change the default setting.
If you have created a new method, a recipe is automatically assigned to this method.
You have the option of assigning a different recipe to your chosen method (see Select
existing recipe [
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52]") or a new recipe (see Create new recipe [
}
53]").
6.3.3 Select existing recipe
With a recipe you define which masses (= gases) with which measurement settings
are used for measuring.
1 Measure > Recipe > Load & Run.