INFICON Helium Leak Detector Modul1000 - Manual (Page 92)

9-4
Technical Data
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ZERO
Edge-controlled input
Change from LOW to HIGH: Activate ZERO.
Change from HIGH to LOW: Deactivate ZERO
START/STOP
Edge-controlled input
Change from LOW to HIGH: activate START
Change from HIGH to LOW: activate STOP
START
Edge-controlled input
Change from LOW to HIGH: carry out START
STOP
Edge-controlled input
Change from LOW to HIGH: activate STOP
If this input is HIGH for a longer period than it is set in "Ventilation Delay", ventilate
additionally.
VENT
Edge-controlled input
Change from LOW to HIGH: Flooding
GAS BALLAST
Edge-controlled input
Change from LOW to HIGH: Activate Gas Ballast/Purge.
Change from HIGH to LOW: Deactivate Gas Ballast/Purge.
CLEAR
Edge-controlled input
Change from LOW to HIGH: Acknowledge error message or abortion of a calibration.
CAL
Edge-controlled input
Change from LOW to HIGH:
In case the device is in Standby mode: Start internal automatic calibration. In case
the machine is in Measurement mode: Start manual calibration. (Precondition: exter-
nal test leak has to be open and leak rate signal is constant)
Change from HIGH to LOW:
External calibration: approve that external test leak is closed and leak rate signal is
stable.