INFICON T-Guard Leak Detection Sensor - Manual (Page 61)

Operation
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Measurement settings
→ Set time → Purge time
This item is only available in Accumulation mode.
Enter here, how long the purge will take after the accumulation measurement The
automatic purging can be switched automatically in this screen. Only then, it is
possible to start purging by a command.
Possible values: 1 s to 50 s.
Default setting: 4 s.
Measurement settings
→ Accumulation vol. → Test Volume
This item is only available in Accumulation mode.
T-Guard™ Leak Detection Sensor can measure the accumulation volume in
Accumulation mode when the test leak rate is applied during setting up.
Measurement Settings
→ Accumulation Volume → Volume
This item is only available in Accumulation mode.
Enter the net chamber volume (chamber volume minus test sample volume) here.
Possible values: 0.01 l to 10000 l.
Default setting: 1 l.
Measurement settings
→ Pressure unit
Choose your favourite pressure unit.
Possible values: atm, Torr, PSI, Pa, mbar.
Default setting: mbar.
Main menu
→ Settings →
Interfaces
→ Control location
Select how the T-Guard™ Leak Detection Sensor shall be controlled.
Possible values: PLC, RS232, all, local and PLC, local and RS232, local.
Default setting: All.
"Local" (control unit) means that neither the PLC nor the RS232 may start or stop a
device.
"RS232" means that neither the control unit nor the PLC may start or stop a device.
"PLC" means that neither the control unit nor the RS232 may start or stop a device.
The operating unit is always allowed to be configured.
Use the Menu PIN to avoid it.
(Access control
→ Edit Menu PIN)
RS232 is always allowed to read values.
The PLC outputs are always active.
Interfaces
→ RS232 Protocol → ASCII
The ASCII protocol can be used to communicate with the T-Guard™ Leak Detection
Sensor by typing commands in a terminal program like Microsoft Hyperterm and
getting a human readable answer.
This record is pre-set as standard.